JP3508645B2 - Device having a camera unit and a display unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus having a camera unit and a display unit, each of which has a camera unit on a housing surface and a display unit for receiving and displaying image data picked up by the camera unit.

[0002]

2. Description of the Related Art In recent years, liquid crystal televisions have become widespread in place of CRTs (Cathode Ray Tubes) and are widely used in the fields of vehicle mounting and sports watching.

In particular, recently, a high-definition liquid crystal television, which is so small that it fits in a chest pocket of a shirt, has been developed, and it has become possible to carry the television at any time when commuting or on a business trip. There is.

[0004]

However, in such a conventional liquid crystal television, the liquid crystal television is configured to receive television radio waves and display only the received image data on the liquid crystal display device. The only images that could be viewed by were the received images of the television broadcast.

On the other hand, although there are many opportunities to use a telephone while out of the office, naturally only a voice can be transmitted by the telephone.

As described above, it is unreasonable that only voice can be transmitted when using a telephone while carrying a liquid crystal television capable of viewing images.

The present invention has been made in view of such a background, and provides an apparatus having a camera section and a display section, which has a function of transmitting and receiving predetermined image data and audio data using a communication line. The purpose is to provide.

[0008]

The means of the present invention are as follows.

According to a first aspect of the invention, a camera section and a display section are provided.
The camera unit has a
For devices that mutually send and receive intermittent still images that are imaged
Connection means for connecting to the communication line, and the camera.
Image data captured by the communication line and the connection hand.
Communication to the other device via
Intermittent still images taken by the camera unit during communication
During the communication, the transmitting means for transmitting the
When the switch means is operated,
Still image recording means for recording image data to be transmitted
And the other device via the communication line and the connecting means.
By receiving the image data sent from
A still image captured by the camera unit of the partner device during communication
Receiving means for receiving images intermittently and received image data
Data by displaying the data intermittently by the receiving means.
Liquid crystal display means for sequentially displaying still images received by
It is characterized by including. The invention according to claim 2 is
It has a camera unit and a display unit, and while communicating with a partner device,
Intermittent still images captured by the camera are sent to each other.
Connection to connect to the communication line in the receiving device
Means for communicating image data captured by the camera unit.
Transmission to the partner device via a line and the connection means.
With, the image is captured by the camera unit during the communication.
Transmission means for transmitting intermittent still images, communication line and
The image sent from the partner device via the connection means.
By receiving the image data, the other party
Intermittently receives still images captured by the camera section of the device.
You can display the received image data
By the, the stationary received intermittently by the receiving means
Liquid crystal display means for sequentially displaying images and a first switch hand
A second switch means, and the first switch during the communication.
When the switch means is operated, before the operation
A receiver for recording image data to be displayed by the liquid crystal display means.
A still image recording means, and the second switch during the communication.
When the means is operated, the image to be sent at the time of the operation
Transmission still image recording means for recording image data,
Is characterized by.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to FIGS.

1 to 11 are views showing an embodiment of an image receiver according to the present invention.

First, the structure will be described. FIG. 1 is a perspective view of the receiver of the present invention seen from the front side, and FIG. 2 is a perspective view of the receiver of the present invention seen from the rear side. In the explanation below,
A case where an analog telephone general subscriber line is used as a communication line will be described as an example.

In FIG. 1, the receiver 1 is roughly composed of an apparatus main body 2 and a power source section 3.

The device body 2 has a length of 65 mm, a width of 60 mm,
It is composed of a case made of reinforced plastic having a thickness of 24 mm, and a camera section 4, a liquid crystal display section 5 and a microphone section 6 are provided on the front side of the apparatus main body 2 as shown in FIG.
Are integrally provided, and a speaker unit 7 is integrally provided on the back surface of the apparatus body 2 as shown in FIG.

The power supply unit 3 is attached to the lower portion of the apparatus main body 2 to supply a predetermined power supply current to the apparatus main body 2, and more specifically, a dedicated nicad (Ni-Cd).
It is composed of a battery pack containing a storage battery.
In the present embodiment, as the power supply unit 3 attached to the lower portion of the apparatus main body 2, a battery pack incorporating a dedicated NiCd storage battery is described as an example. A dry battery pack that contains five alkaline dry batteries, an AC adapter that converts a commercial AC power supply (AC power supply) into a direct current (DC) voltage of a predetermined voltage value, and uses it.
A car adapter or the like that uses a DC battery from a cigarette lighter portion of a car may be used.

As shown in FIGS. 1 and 2, the camera unit 4 is a small CCD formed at the center of the upper end of the apparatus main body 2.
(Charge Coupled Device) camera, which is rotatably attached to the apparatus body 2 by a rotation shaft (not shown). Specifically, the camera unit 4 of the present embodiment is arranged in the front-back direction from the same surface direction as the display surface of the liquid crystal display unit 3 which is the front surface of the apparatus body 2 to the same surface direction as the speaker unit 7 which is the back surface of the apparatus body 2. It is supported so that it can be rotated approximately 180 degrees in any direction, and the subject imaging area can be changed without changing the orientation of the apparatus main body 2.

The liquid crystal display unit 5 is a TFT type active matrix type liquid crystal display device having a screen size of 1.4 inches, and has three primary colors of R (Red) and G (Green).
n), and a high resolution color liquid crystal display panel of 220 × 279 = 61380 pixels in which pixels corresponding to B (Blue) are arranged in a delta shape.

The microphone section 6 is composed of, for example, an electret condenser type microphone, and as shown in FIG. 1, receives voice data from a microphone hole 6a formed at a lower end position on the front surface of the apparatus main body 2. In this embodiment, an electret condenser type microphone is described as an example of the microphone unit 6, but the microphone unit 6 is not limited to this. For example, a dynamic microphone may be used as the microphone unit 6. It doesn't matter.

The speaker section 7 is composed of, for example, a dynamic cone speaker, and outputs audio data from a speaker hole 7a formed on the back surface of the apparatus body 2 as shown in FIG. In the present embodiment, the speaker unit 7 is described by taking a dynamic cone speaker as an example, but the present invention is not limited to this, and the speaker unit 7 is not limited thereto.
The speaker used in the above may be, for example, a capacitor-type or flat-type all-drive speaker or a dome speaker.

Further, the device body 2 includes a power switch 21, a power indicator 22, a tuning button 23, a volume dial 24, and an earphone terminal 2.
5, video on / off switch 26, video switch 2
7. Various operation switches such as the image capture switch 28 are provided.

The power switch 21 is a switch for selecting whether or not the power supply voltage supplied from the power supply unit 3 is supplied to the image receiving apparatus 1, and the power indicator 2
2 is composed of an LED (Light Emitting Diode),
The light is turned on when the power switch 21 is turned on.

The tuning button 23 is for instructing up or down of the tuning frequency, and the volume dial 24 is for adjusting the earphone volume. The earphone terminal 25 is a terminal for connecting an earphone that also serves as a wire antenna, and also has a function as an antenna terminal.

The video on / off switch 26 is a toggle switch for instructing the liquid crystal display unit 5 whether or not to display an LCD screen, and the video changeover switch 27 is a liquid crystal display unit 5.
The image capture switch 28 is a toggle switch for switching and displaying a transmission screen or a reception screen as a video to be displayed on the LCD. The image capture switch 28 stores the image displayed on the liquid crystal display unit 5 as image data in a predetermined memory. It is a switch to instruct.

FIG. 3 is a diagram for explaining the connection relationship of the receiver 1 of FIG.

In FIG. 3, the receiver 1 of the present embodiment is provided with an input / output terminal T1 on the side surface of the apparatus main body 2, and a modular jack type outlet connected to this input / output terminal T1 and a general analog telephone subscriber line. 101 is connected by a modular cable 102.

FIG. 4 is a block diagram showing a schematic configuration of the receiver 1 shown in FIG. In FIG. 4, the receiver 1 is
Device body 2, power supply unit 3, camera unit 4, liquid crystal display unit 5, microphone unit 6, speaker unit 7, TV tuner unit 8, modulation /
The demodulation circuit 9, the image processing circuit 10, the audio processing circuit 11, the control circuit 12, and the key input circuit 13 are provided, and the modulation / demodulation circuit 9, the image processing circuit 10, and the audio processing circuit 1 are included.
1, the control circuit 12, and the key input circuit 13 are connected to the bus B, respectively.

As described above, the power supply unit 3 is composed of a battery pack containing a NiCd (Ni-Cd) storage battery, and when the power switch 21 is turned on, a predetermined power supply voltage is applied to each unit in the apparatus body 2. To supply.

The camera section 4 is composed of a lens 31 and a CCD 32.

The lens 31 is provided on the apparatus main body 2,
An optical lens made of glass or plastic,
The CCD 32 generates an electric signal based on the intensity of the light imaged by the lens 31, and outputs this electric signal (analog signal) to the image processing circuit 10.

The liquid crystal display unit 5 is a DD (Display Driver).
33, and an LCD (Liquid Crystal Display) 34.

The DD 33 drives the LCD 34 in order to display an image on the LCD 34 based on the video signal input from the image processing circuit 10. Specifically, the input video signal is 220 × 279. The pixel converts it into an analog video signal (analog RGB signal) of a predetermined bit and outputs it to the LCD 34.

The LCD 34 is composed of a color liquid crystal display device having a liquid crystal panel 69 which will be described later, and the LCD 34 in this embodiment has a small flat fluorescent tube 75 which will be described later as its backlight (backside illumination). It is used.

The microphone section 6 outputs the voice data taken in through the microphone hole 6a to the voice processing circuit 11 as voice data to be transmitted.

The speaker section 7 outputs the audio data output from the audio processing circuit 11 to the outside through the speaker hole 7a as the audio data to be received.

The TV tuner section 8 includes a tuner 35, A
It is composed of DC 36.

The tuner 35 selectively receives a predetermined television signal and outputs a video signal to the image processing circuit 10 via the ADC 36.

The ADC 36 converts a video signal, which is an analog signal input from the tuner 35, into a digital signal.

The modulation / demodulation circuit 9 has a buffer memory 37.
And modem (MODEM, MOdulation and DEModulation) 38
And an NCU (Network Control Unit) 39. Incidentally, T1 is an input / output terminal for the above-mentioned communication line (in this case, a general subscriber line for analog telephone).

The buffer memory 37 temporarily stores and holds the image data and audio data demodulated by the modem 38, and temporarily stores and holds the image data and audio data to be modulated multiplexed by the CPU 50. The image data and audio data stored in the buffer memory 37 are based on a control command from the CPU 50 on the bus B at the time of demodulation and the modem 38 at the time of modulation.
Is output to.

The modem 38 and the NCU 39 send serial digital signals output from a computer or terminal device,
A function as a "modulator" that converts and transmits to a transmission signal (analog signal) that can be transmitted on a communication line,
Conversely, it has a function as a "demodulator" that converts a transmission signal (analog signal) sent via a communication line back into a digital signal that can be decoded by a computer or a terminal device. The NCU 39 makes it possible to use an analog telephone general subscriber line as a communication line to be used.

Further, the modems 38 and N in this embodiment are
The CU 39 is capable of signal transmission at 14400 bps, which is the maximum data transmission rate that can be used on an analog telephone general subscriber line, and by incorporating a video code and an audio code into one frame which is a processing unit, image data and audio are transmitted. Data is simultaneously transmitted in both directions, and image data for one screen is transmitted as an intermittent image at a rate of one frame every three seconds.

FIG. 5 is a diagram showing the structure of one frame of the multiplexed code.

The multiplex code which constitutes one frame is composed of a video header and a video code of about 256 bytes (about 204 bytes).
It is composed of video data of 8 bits) and audio data of about 256 bytes (about 2048 bits) including an audio header and an audio code. The video code and the audio code include an error correction code, and the video code Since the video header and the audio header are respectively added before and the audio code, the total transmission data amount of the image data included in the actual video code and the audio data included in the audio code is 9600b.
ps, which uses 4800 bps for image data and 4800 bps for audio data.

Specifically, the data length of one frame is about 256 bytes for video data and about 256 bytes for audio data, which is a total of about 512 bytes (about 4098 bits).
At a transmission rate of 14400 bps, the data transmission time for one frame is approximately 280 ms (approximately 14
0 ms, about 140 ms for voice data).

That is, about 3.57 frames of data are transmitted per second, and the video data transmitted per second is about 7300 bits (256 × 8 × 3.57 = 7).
311). Therefore, in the present embodiment, about 2500 bit data obtained by subtracting the actual image data (4800 bps) from the about 7300 bit data transmitted per second, information about the screen size, the command regarding the image data transmission, and the error correction code are added. Etc. are included.

Incidentally, the image data handled in this embodiment is color image data of 4096 colors (12 bits) with 110 × 160 pixels on one screen, and the image data amount for one screen is 110 × 279 × 12 = 211200. It is a bit (about 25.8 kilobytes). The data is collectively compressed to about 68/1000 by image compression processing and 144
The image data is 00 bits, and the 14400 bits are transmitted by 4800 bits per second, that is, an intermittent still image is transmitted at a rate of 1 frame in 3 seconds (= 14400/4800).

Therefore, the data actually transmitted in one second is obtained by dividing 211200 bits by 3.
This is 0400-bit (about 8.6 kilobytes) image data, and this 70400-bit image data is about 68/1.
The video code is compressed to 000 to include 4800-bit image data.

In this case, as the image data to be transmitted, not only the image data for one screen is collectively compressed and the compressed image data is transmitted, but also the original image data is preliminarily based on the transmission time. It may be divided and the compression processing may be performed on the divided image data units.

On the other hand, the voice data is 12 bits / 8 kHz.
Treated as digital data sampled by z, this 12 × 8000 = 96000 bit voice data is
It is compressed to about 50/1000 to obtain a voice code including 4800-bit voice data.

The image processing circuit 10 includes a buffer memory 4
0, image compression / expansion circuit 41, ADC (Analog to Digi
tal Converter: A / D converter) 42, video memory (VRAM) 43, 44, DAC (Digital to Analo)
g Converter: D / A converter) 45. Note that T2 is an image input terminal.

The buffer memory 40 is for temporarily storing the compressed image data compressed by the image compression / expansion circuit 41. The image data stored in the buffer memory 40 in a compressed state is stored in the CPU 50. Are sequentially read out based on the control command. By the way, by ensuring a sufficient storage capacity of the buffer memory 40,
A plurality of image data captured from the camera unit 4 can be stored in a compressed state, and by utilizing this, the receiver 1
Can also be used as an electronic still camera.

The image compression / expansion circuit 41 uses, for example, JPEG (Joint Photographic) according to a predetermined encoding method of the image data stored in the video memory 43, that is, the type of image to be handled (still image in this case). (Coding)
Experts Group) performs compression processing (encoding) by DCT (Discrete Cosine Transform), quantization, and Huffman encoding for each 8 × 8 pixel block, and is also received via a communication line. , Expands (decodes) the received compressed image data demodulated by the modulation / demodulation circuit 9, and outputs the expanded image data to the video memory 44 for storage. In this case, the communication line Through 110 × 160
Image data sent as a color video signal of a maximum of 4096 colors (12 bits) in pixels includes a luminance signal corresponding to 220 × 279 pixels (hereinafter referred to as Y signal) and a color signal corresponding to 4096 colors (hereinafter referred to as C signal) ) And a YC signal processing function, and the above 110 × 16
12-bit data with 0 pixels is converted into 12-bit digital image data with 220 × 279 pixels. The data compression rate in the image compression processing is about 7/100 (about 68/100) from the relationship with the image quality after decompression.
0).

The ADC 42 converts an image signal (analog signal) input from the camera section 4 into a signal (digital signal) that can be processed in the image processing circuit 10 and outputs the signal to the video memory 43.

The video memories 43 and 44 are VRAM (Vi
deo RAM) and the video memory 43 is AD
Image data (digital data) output from C42
The video memory 44 is a semiconductor image memory for storing image data (digital data) compressed / expanded by the image compression / expansion circuit 41.

The DAC 45 converts the image signal (digital signal) of the image data stored in the video memory 44 into a signal (analog signal) that can be displayed by the liquid crystal display unit 5, and outputs the signal. In this embodiment, since the analog data driver is used as the data driver of the LCD 34 described above, a DAC (D / A converter) is required. However, when a digital data driver is used as the data driver. The DAC 45 becomes unnecessary.

The audio processing circuit 11 is composed of an ADC 46, an audio compression / expansion circuit 47, a buffer memory 48, and a DAC 49.

The ADC 46 converts a voice signal (analog signal) input from the microphone unit 6 via the NCU 39 of the modulation / demodulation circuit 9 into a signal (digital signal) that can be processed in the voice processing circuit 11, and compresses the voice. The data is output to the expansion circuit 47.

The audio compression / expansion circuit 47 converts the digital audio data input from the ADC 46 into, for example, CEL.
The P (Code Excited Linear Predivion) algorithm is used to analyze the input data for a fixed time, to synthesize the waveform based on the analyzed parameters, and to calculate the error between the input waveform and the synthesized waveform. The input data from B is compressed (encoded), the compressed audio data is output to the buffer memory 48, and the received compressed audio data demodulated by the modulation / demodulation circuit 9 is expanded (decoded). Processing) and outputs the decompressed audio data to the DAC 49. The data compression rate in the audio compression process is about 5/100 (about 50/1000) because of the relationship with the audio quality after decompression.

The buffer memory 48 temporarily stores the compressed audio data compressed by the audio compression / expansion circuit 47 and the compressed audio data to be expanded by the audio compression / expansion circuit 47. The voice data stored in the memory 48 in a compressed state is C
It is sequentially read based on a control command from the PU 50.

The control circuit 12 is a CPU (Central Process).
sing unit) 50 and RAM (Rand-om Access Memory)
51 and a ROM (Read Only Memory) 52.

The CPU 50 outputs various control signals for controlling each unit in the receiver 1 to each circuit via the bus B, and executes a communication control program according to the type of communication line to be connected. Further, the CPU 50 receives the image data and the audio data multiplexed and transmitted from the image transmission device (videophone device) of the other party, demodulated by the modulation / demodulation circuit 9, and input and demodulated. The image data and the audio data are separated, the compressed image data is output to the image compression / expansion circuit 41 in the image processing circuit 10 via the bus B, and the compressed audio data is output to the audio processing circuit via the bus B. It is output to the voice compression / decompression circuit 47 in the No. 11.

Further, the CPU 50 outputs the compressed image data output from the image compression / expansion circuit 41 to the bus B via the buffer memory 40 and the audio compression / expansion circuit 47 to the bus B via the buffer memory 48. The compressed audio data is multiplexed and combined, and is output to the modulation / demodulation circuit 9 via the bus B as image data and audio data.

The RAM 51 is a semiconductor memory that stores program data used in the program processing executed by the CPU 50, compressed image data, audio data, and the like.

The ROM 52 is a semiconductor memory that stores programs and data used in the receiver 1.

The key input circuit 13 operates to turn on the above-mentioned image.
It is composed of various operation key switches such as an off switch 26, a video changeover switch 27, and an image capture switch 28. When the key switch is pressed, the CPU 50 executes a process corresponding to the key switch.

The bus B is a common signal path for connecting the modulation / demodulation circuit 9, the image processing circuit 10, the audio processing circuit 11, the control circuit 12, and the various key switches (26, 27, 28), respectively. An address bus to direct,
It is composed of a data bus for transferring data.

In the above structure, the liquid crystal display device is generally very thin and easy to be made small and lightweight as compared with an image display means such as a CRT, and the active matrix type LCD is simple. Matrix type LCD
Compared with, it is possible to control fine halftones, secure a high contrast ratio, and have a high response speed. Therefore, it is an effective device in the field where high-quality and multi-tone color display is required. Yes, especially,
An active matrix type LCD using a TFT which is a three-terminal element can obtain a high image quality comparable to that of a CRT.

In this embodiment, in order to further utilize the excellent advantages of this liquid crystal display device, as described below,
We are also working to reduce the size of the backlight.

FIG. 6 is an exploded perspective view of the LCD 34.

In FIG. 6, the LCD 34 comprises a front shield case 61, a liquid crystal display unit 62, and a rear shield case 63.

As shown in FIG. 6, the front shield case 61 has a screen display opening 64 formed therein, and insulating tapes 65 and 66 are adhered to the back surface of the front shield case 61.

The liquid crystal display unit 62 includes a scan driver circuit 67, a data driver circuit 68, and a liquid crystal panel 69.
And formed by TAB (Tape Automated Bonding). Reference numeral 70 denotes a flexible substrate on which signal lines for outputting necessary signals to the scan driver circuit 67 and the data driver circuit 68 are wired.

The scan driver circuit 67 drives a scan bus (not shown) in the liquid crystal panel 69, controls ON / OFF of TFTs for one line in the scanning direction, and supplies a voltage of a data bus (not shown). The voltage is applied to the liquid crystal cell for a required period at a predetermined timing.

The data driver circuit 68 drives the data bus of the liquid crystal panel 69 based on the input of image data.

The liquid crystal panel 69 is a TFT type liquid crystal display panel which is one of the active matrix systems, and is, for example, 22 output from the image compression / expansion circuit 41 and D / A converted by the DAC 45 via the video memory 44.
An analog video signal of 0x279 pixels and a predetermined number of bits is D
D33 outputs an analog RGB signal of 220 × 279 pixels with a predetermined number of bits, and displays an image on the display surface of the LCD 34 of 220 × 279 pixels.

As shown in FIG. 6, the back shield case 63 has a backlight opening 71 formed therein, and is fixed to the liquid crystal display unit 62 by double-sided tapes 72, 73 and 74.

FIG. 7 is an exploded perspective view of the flat fluorescent tube 75.

The flat type fluorescent tube 75, as shown in FIG.
A hollow cathode structure in which argon (Ar) gas and mercury (Hg) are enclosed in a container composed of a front glass panel 76, a rear glass panel 77, and a frame glass 78, and which has a U-shaped or V-shaped cross section (not shown). A pair of discharge electrodes on the left and right are arranged opposite to each other, and a phosphor is applied to the inner surfaces of the front glass panel 76 and the rear glass panel 77 by screen printing. Then, lead pieces 79 and 80 extending downward corresponding to the left and right discharge electrodes are provided. In addition, 81 is an exhaust pipe and 82 is a fluorescent screen.

The flat fluorescent tube 75 is the same as the LCD 34.
Is laminated on the back surface of the
Light is evenly applied to the backlight opening 71 from the entire surface of 2.

A transparent thin resin sheet 83 is attached to the front glass panel 76 with double-sided tapes 84 and 85 with a slight gap kept between the transparent resin sheet 83 and the fluorescent surface 82. The resin sheet 83 is formed by blending polyethylene terephthalate (PET) with an ultraviolet blocking agent, and is formed of a material having excellent heat resistance and an ultraviolet blocking function. In this case, the ultraviolet blocking agent may be applied instead of being compounded.

A shield case 86 is provided on the back surface of the flat fluorescent tube 75.
Is to block the electromagnetic waves generated from the flat fluorescent tube 75 and prevent adverse effects on peripheral circuits. 8
7 is a spacer, 88 is a substrate, 89 is a lead wire, and 90 is a connector.

The shield case 86 and the back glass panel 77 are fixed to each other with double-sided tapes 91 and 92, and as shown in FIG. 7, a flat fluorescent tube 75 to which an insulating tape 93 is attached is attached.

A board 88 is disposed below the shield case 86 via a spacer 87, and lead pieces 79 and 80 and a lead wire 89 are soldered to the board 88 to connect the board 88 and the lead wire 89. And the lead wire 89 is connected to the connector 90.

That is, the spacer 87 is sandwiched between the shield case 86 and the substrate 88 and serves as a receiver when the substrate 88 is adhered and attached by the double-sided tape 94 and when the flat fluorescent tube 75 emits light. Light leakage is prevented, and an absolute distance between the shield case 86 and the substrate 88 with respect to high voltage is secured.

As described above, the liquid crystal display unit 62
Flat fluorescent tube 7 in a state of being extremely close to the back side position of
A configuration in which 5 are arranged is adopted. That is, the shield case 86 of the flat fluorescent tube 75 is closely attached to the rear surface position of the rear shield case 63 of the liquid crystal display unit 62.

Here, since a high voltage is required to cause the flat fluorescent tube 75 to emit light, the flat fluorescent tube 7 is required.
The lead pieces 79 and 80 of No. 5 and the substrate 88 connecting them are in the high voltage region. Then, when the lead pieces 79, 80 and the substrate 88 of the flat fluorescent tube 75 and the rear surface shield case 63 of the liquid crystal display unit 62 come close to each other, a discharge occurs due to a high potential difference, a current flows, and the inside of the liquid crystal display unit 62 is destroyed. there is a possibility.

Therefore, the resin sheet 83 covering the fluorescent surface 82 and the lead pieces 79 and 80 is provided on the front surface of the flat fluorescent tube 75.
Since the lead pieces 79, 80 are touched by the hand, the lead pieces 79, 80 and the substrate 88 and the liquid crystal display unit 62 are provided.
The rear shield case 63 can be insulated so as not to cause air discharge (leakage).

Further, since the flat fluorescent tube 75 emits ultraviolet rays, if it is used as a backlight as it is, the liquid crystal is deteriorated by the ultraviolet rays. However, since the resin sheet 83 contains an ultraviolet blocking agent, the liquid crystal is protected. can do.

Further, in the flat fluorescent tube 75, the stability of light emission increases as the fluorescent tube surface has a more uniform temperature distribution due to its electrical characteristics. Therefore, the resin sheet 83 having excellent heat resistance is used. By sticking the resin sheet 83 and the fluorescent screen 82 with a slight gap therebetween, a small space is set between the resin sheet 83 and the fluorescent screen 82, and the heat is dissipated from the fluorescent tube to use the air. It has a heat retention function to warm the layers.

Furthermore, when the fluorescent surface 82 of the flat fluorescent tube 75 is scratched at the time of assembly at the factory, diffuse reflection occurs due to the scratch, and the scratch appears as a shadow on the liquid crystal screen. 83 prevents damage in the process.

Next, the operation of this embodiment will be described.

First, the operation of the control circuit 12 shown in FIG. 4 will be described with reference to the flow charts of FIGS. 8 and 9. The program corresponding to the processing operation of the CPU 50 in the control circuit 12 is the ROM in the control circuit 12 as well.
It is stored in 52.

The receiver 1 in the present embodiment receives a predetermined television broadcast and displays the received image on the liquid crystal display unit 5 in the first operation mode, and the image data and the image data via the predetermined communication line. Each operation mode including a second operation mode for transmitting and receiving audio data is provided.

When the receiver 1 is in the power-off state or in the power-on state and in the first operation mode, the input / output terminal T1 of the receiver 1 and the modular jack type outlet 10
It is not connected to 1 and is used as a normal receiver.

When the receiver 1 is in the power-on state and in the second operation mode, the audio signal is taken into the receiver 1 from the microphone unit 6 and the A46 is supplied by the ADC 46 via the NCU 39.
After the D / D conversion, the audio compression / expansion circuit 47 compresses the data by a predetermined compression process and outputs the compressed data to the buffer memory 48. Then, based on the control signal from the CPU 50, the compressed audio data in the buffer memory 48 is output to the bus B, the audio signal output to the bus B is combined with the image signal by the CPU 50, and the modem 38 and the NCU 39 are connected.
And is output to the analog telephone general subscriber line from the input / output terminal T1.

On the other hand, the input signal input from the analog telephone general subscriber line via the input / output terminal T1 is the modem 3
After being demodulated by 8 and NCU 39, it is A / D converted by a DSP (Digital Signal Processor) in the modem 38 and output to the buffer memory 37. And CPU
Based on the control signal from 50, the image signal and the audio signal in the buffer memory 37 are output to the bus B, and the image signal and the audio signal output to the bus B are separated by the CPU 50 into the image signal and the audio signal. . Then, the audio signal is expanded by the audio compression / expansion circuit 47, and the DAC 49
Is D / A converted by and output to the speaker unit 7 via the NCU 39.

FIG. 8 is a flow chart for explaining the processing operation of the CPU 50.

First, after turning on the power of the receiver 1, the control circuit 1
Initialization such as initialization in 2 and clearing of each memory is performed (step S1), and the key switches 26 and 2 are set.
A key scan is performed to check whether there is an input from 7, 28, ... (Step S2).
Here, if there is a key input, necessary processing described later is executed according to the key operation.

Next, the reception flag is once turned off (= "0").
The line voltage level of the NCU 39 is monitored (step S3), and in this state, the ringer tone is detected to check whether there is a call from the communication partner (step S4).

If it is determined that the ringer tone period is in effect, the reception flag is turned on (= "1") (step S5), the line voltage level of the NCU 39 is monitored again, and the telephone call is now in progress. It is determined whether or not (step S6).

If it is determined that the communication is not in progress, it is determined whether or not the video on / off switch 26 has been pressed (step S7). If not, the process is repeated from step S2. It As a result, the loop A is configured in a state where the video on / off switch 26 is not pressed, not in the call state.

On the other hand, in the processing of step S6,
If it is determined that the call is in progress, then it is checked whether the reception flag is on (step S
8) If the reception flag is off (= “0”), as in the case where the video on / off switch 26 is pressed in the process of step S7, the display screen (L) of the liquid crystal display unit 5 is displayed.
The CD 34) is initialized (step S9).

When the initial setting of the LCD 34 is completed, the image data stored in the video memory 43 is read by the image compression / expansion circuit 41 and is output to the video memory 44 as it is, so that the image is transferred from the video memory 43 to the video memory 44. Data is moved (step S1)
0).

Next, the key switches 26, 27, 28,
A key scan is performed to check whether there is an input from (step S11), and NCU39
By monitoring the line voltage level of (1), it is determined whether or not the call is in progress (step S12), and when the call is not in progress, it is determined whether or not the video on / off switch 26 is pressed (step S13). .

If the video on / off switch 26 is not pressed in the determination process of step S13, the process is repeated from step S10. As a result, the loop B in which the video on / off switch 26 is pressed, not in the call state, is formed. Further, in the determination process of step S13, if the video on / off switch 26 is pressed, the screen displayed on the LCD 34 of the liquid crystal display unit 5 is erased (step S14), and the process of step S2 is performed. Will be executed again.

On the other hand, if it is determined in the determination process of step S12 that a call is in progress, the process proceeds to step S16 described later. That is, when not in a call, by pressing the video on / off switch 26 to turn it on, the video image captured by the camera unit 4 of the portable receiver 1 can be displayed on the LCD 34 of the liquid crystal display unit 5. In this state, by pressing the video on / off switch 26 to turn it off, the LC of the liquid crystal display unit 5 is
The display of D34 can be turned off. On the other hand, in the determination processing of step S6, when it is determined that the call is in progress, subsequently, when the reception flag is off (= "0"),
Similar to the processing in step S9, the display screen (LCD 34) of the liquid crystal display unit 5 is initialized (step S15).

Then, the key switches 26, 27, 28,
A key scan is performed to check whether or not there is an input from ... (Step S16), and it is determined whether or not a call is currently being made (step S17). In the determination process of step S17, if the call is not in progress, the process is repeated from step S14 and step S2 described above. On the other hand, if it is determined in the determination process of step S17 that the communication is currently in progress, it is determined whether or not the video on / off switch 26 has been pressed (step S18).

In the determination processing of step S18,
If it is determined that the video on / off switch 26 is not pressed, the process is repeated from step S16. As a result, the loop C in the call state but not transmitting / receiving the video is configured. On the other hand, the above step S
In the determination processing of 18, the video on / off switch 26
If is pressed, the process proceeds to the process shown in FIG. 9 described later.

FIG. 9 is a flow chart for explaining the processing operation of the CPU 50 following FIG.

When the video on / off switch 26 is pressed in the determination processing of step S18, negotiation processing is performed (step S21), and the screen of the liquid crystal display unit 5 is initialized (step S22).

Next, based on the control signal from the CPU 50, the image processing circuit 10 performs the compression / expansion processing of the image data (step S23), and the audio processing circuit 11 performs the compression / expansion processing of the audio data. (Step S24), data is transmitted / received by the communication process (step S25).

Then, the key switches 26, 27, 28,
A key scan is performed to check whether or not there is an input from ... (Step S26), and it is determined whether or not a call is currently being made (step S27).

If a call is in progress, the above step S2 is performed.
The processing from 3 is executed again. As a result, a loop D in a call state and transmitting / receiving a video is formed. On the other hand, when the telephone call is not in progress, the processing is repeated from the processing of steps S14 and S2 shown in FIG. That is, when a call is in progress, by pressing the video on / off switch 26, video transmission / reception is possible.

The compression / expansion processing of image data in step S23, the compression / expansion processing of audio data in step S24, and the data communication processing in step S25 will be described below. It should be noted that the receiver 1 of the present embodiment
In the transmission process and the reception process, the image data process and the audio data process are simultaneously executed in parallel. Therefore, the transmission process and the reception process will be separately described below.

(Transmission Processing) The image data taken by the camera unit 4 is A / D converted by the ADC 42,
Image data corresponding to one screen output from the ADC 42 in response to a trigger signal from the CPU 50 is stored in the video memory 4
Taken in 3. In this case, the image data captured by the camera unit 4 is not only the self-image captured in real time, but also the image data captured in advance and stored in the buffer memory 40 (for example, image data of products, landscapes, etc.). Good.

The image data taken in the video memory 43 is compressed by the image compression / expansion circuit 41,
It is temporarily stored in the buffer memory 40. Then, the image data stored in the buffer memory 40 in a compressed state is sequentially read based on a control signal from the CPU 50.

When it is desired to record a self-portrait (transmission image) displayed on the LCD 34 during a call, the operator depresses the image capturing switch 28,
The image data stored in the buffer memory 40 is the RAM 5
It is stored in 1.

In this case, since the data amount of the compressed image data for one screen is 14400 bits (about 1.76 kilobytes), in order to store the compressed image data for 10 screens, the image data is stored in the RAM 51. Storage area is about 1
8 kilobytes is enough.

On the other hand, the voice data input from the microphone section 6 is sent from the input / output terminal T1 to the ADC4 via the NCU 39.
After A / D conversion by 6, the audio compression / decompression circuit 47
It is compressed by and is temporarily stored in the buffer memory 48. Then, the audio data stored in the buffer memory 48 in a compressed state is sequentially read based on a control signal from the CPU 50.

The CPU 50 sequentially reads the compressed image data and audio data, synthesizes the image data and audio data, and outputs them to the modem 38. The input compressed data is modulated by the modem 38, D / A converted, and then output from the NCU 39 to the analog telephone general subscriber line via the input / output terminal T1.

(Reception Processing) The compressed image data and audio data are input to the modem 38 from the analog telephone general subscriber line via the input / output terminal T1 and NUC31. The compressed data demodulated by the modem 38 is A / D converted by the DSP in the modem 38 and then output to the buffer memory 37.
The demodulated compressed data inside is output to the bus B based on the control signal from the CPU 50, and the CPU transmits the bus B via the bus B.
50 are sequentially transferred.

The CPU 50 separates the combined data into image data and audio data, and temporarily stores the compressed image data in the buffer memory 40 and the compressed audio data in the buffer memory 48.

Next, the image compression / expansion circuit 41 sequentially reads out the compressed image data thus written from the buffer memory 40, decompresses it, and writes it in the video memory 44.

Here, when it is desired to record the partner image (received image) displayed on the LCD 34 during a call, the image data stored in the buffer memory 40 is pressed by the operator pressing the image capture switch 28. Is RA
It is stored in M51.

In this case, as described in the above transmission processing, the data amount of the compressed image data for one screen is about 2.
Since it is 5.8 kilobytes, if the image data storage area of the RAM 51 is 256 kilobytes, about 10
Up to the screen can be stored. That is, for example, the storage area for 10 screens is used for storing image data for transmission.
The screen and the image data for reception can also be divided into seven screens for use.

On the other hand, the voice compression / decompression circuit 47 sequentially reads the written voice compression data from the buffer memory 48, decompresses it, and outputs it to the DAC 49 at a constant rate. Then, the decompressed analog voice data is the NCU.
The sound is output to the speaker unit 7 via 39, and the sound can be heard from the rear surface of the apparatus main body 2.

The above transmission / reception processing is repeatedly executed until the communication line is disconnected.

When the condition of the communication line is deteriorated during communication and the quality of the transmitted image is significantly deteriorated, the television tuner is automatically determined by the CPU 50 based on the transmitted image data. The television image received by the TV receiver may be displayed, and in this case, the basic function of receiving the television broadcast in the receiver can be maintained.

The transmission operation and the reception operation will be described below with reference to FIGS. 10 and 11. 10 and 11, on-hook means a state in which the communication operation preparation state is not entered, off-hook means a state in which the communication operation preparation state is entered, and “during a call” means a response from the other party after dialing. There is, and the conversation is established.

First, the transmission operation will be described with reference to FIG.

FIG. 10 is a transition diagram of communication states during transmission. In the figure, capital letters and steps (S6, S7, S12, S13, S17, S1
8, S27) corresponds to the flowcharts of FIGS. 8 and 9.

In the on-hook state (loop A) after the power is turned on, when the screen display of the LCD 34 in the liquid crystal display unit 5 is turned off, the video on / off switch 26
When is pressed once (see step S7 in FIG. 8 and (a) in FIG. 10), the LCD 34 enters the display state (loop A
→ loop B), the camera input image of the receiver 1 is displayed on the LCD 34 as a monitor. In this state, when the video on / off switch 26 is pressed again (see step S13 in FIG. 8 and (b) in FIG. 10), the LCD display disappears and the original state is restored (loop B → loop A). .

When the receiver is lifted from the on-hook state (loop A) (see (c) in FIG. 10), the state shifts to the off-hook state.

In the off-hook state (loop A), when the image display of the LCD 34 in the liquid crystal display section 5 is turned off, the image on / off switch 26 is pressed once (steps S7 and FIG. 10 in FIG. 8). (D)), LCD3
4 becomes the display state, and the camera input image of the receiver 1 on the self side is displayed on the LCD 34 as a monitor, as in the case of the on-hook state described above. In this state,
When the video on / off switch 26 is pressed (see step S13 in FIG. 8 and (e) in FIG. 10), the LCD monitor display disappears and the original off-hook state is restored (loop B → loop A).

It should be noted that the monitor is displayed on the LCD 34 in the on-hook and off-hook states (see FIG. 1).
0, the on-hook and off-hook triple lines are drawn) and the handset is raised and lowered ((f) in FIG. 10).
), The state of the LCD 34 is changed from on-hook to off-hook, or from off-hook to on-hook.
There is no change in the monitor display of.

Next, regardless of whether the LCD 34 is on the monitor display or off, a dial call is made in an off-hook state and a response is established with the other party (steps S6, S12 and (G) in FIG.
(See (h)), and the state is changed to the talking state, and the LCD 34 becomes the monitor display on its own side (loop C). In this state, when the other party hangs up the telephone (see step S17 in FIG. 8 and (i) in FIG. 10), the state shifts to the off-hook state, and the monitor display on the LCD 34 also disappears (loop C → loop A). In addition, even if the user hangs up the call during a call (step S17 in FIG. 8 and (j) in FIG. 10)
(See), the state shifts to the on-hook state, and the monitor display on the LCD 34 also disappears.

When the video on / off switch 26 is pressed during the call (loop C) while the LCD 34 is displaying on its own monitor (see step S18 in FIG. 8 and (k) in FIG. 10), the other party Communication negotiation is started with the side terminal. As a result, when it is determined that the other terminal and the own terminal cannot communicate with each other (see (l) in FIG. 10), the state before the video on / off switch 26 is pressed is returned to the other terminal. When mutual communication is possible with the own terminal, a videophone section is established (see (m) in FIG. 10), and thereafter, mutual communication between image data and audio data is performed.

In this state, no matter how many times the video on / off switch 26 is pressed, it is ignored (see (n) in FIG. 10). In this state (loop D), when the other party hangs up the telephone (see step S27 in FIG. 9 and (o) in FIG. 10), the state shifts to the off-hook state and the monitor display on the LCD 34 also disappears (loop D → Loop A). In addition, even if the receiver puts the handset (step S27 in FIG. 9 and FIG.
(See (p) in the middle), transition to the on-hook state, LCD
The monitor display of 34 also disappears (loop D → loop A).

When the receiver is put on while the monitor display of the LCD 34 is off in the off-hook state, the state shifts to the on-hook state (see (q) in FIG. 10).

Next, the receiving operation will be described with reference to FIG. Note that the description of the items described in the above description of the transmission operation will be omitted.

FIG. 11 is a transition diagram of communication states at the time of reception. Incidentally, the period shown by the zigzag line in FIG. 11 indicates the ringer tone, that is, the time when the bell of the telephone 102 is ringing.

During the ringer tone section (loop A) (see (r) in FIG. 11), when the user lifts the handset to respond (see step S6 in FIG. 8 and (s) in FIG. 11), the call is in progress. However, at this time, unlike the transmission side, the monitor display is not displayed on the LCD 34, and the display is left off (loop A → loop C). However, in the on-hook state (loop A), the video on / off switch 26
When is pressed once (see step S7 in FIG. 8 and (t) in FIG. 11), the LCD 34 enters the monitor display state, and the self side can be monitored (loop A → loop B). At this time, a ringer tone is generated (see (u) in FIG. 11) and responds to this ringer tone (FIG. 8).
In step S12 in the middle and (v) in FIG. 11), the state of talking is entered, and the LCD 34 remains displayed on the monitor. By the way, the video on / off switch 26 is effective even in the on-hook state and in the section of the ringer tone.

As described above, in the present embodiment, the image data and the audio data compressed by the modulation / demodulation circuit 9 are simultaneously transmitted, and the data compression rate (about 7/100) in the image compression / decompression circuit 41 is transmitted. ) And the image data transmission rate (4800 bps) of the modulation / demodulation circuit 9 and the image data for one screen (21200 bits) displayed by the LCD 34 is transmitted in three divisions, and analog telephones are generally used. High-quality images are transmitted on the subscriber line. That is, since the screen size of the LCD 34 is 1.4 inches and one screen has data of 110 × 160 pixels × 12 bits (4096 colors) = 211200 bits, image data is transmitted at a rate of 1 frame in 3 seconds. However, the time for transmitting the image data for one screen is changed as the number of pixels and the number of colors (the number of gradations) of one screen are increased or decreased as the screen size is changed.

Specifically, for example, the mode for transmitting image data in 4096 colors is set to the normal mode, and the same number of pixels (1
When the mode for displaying 65536 colors (16 bits) with 10 × 160 pixels) is set to the high image quality mode, when transmitting image data in the high image quality mode, the image data amount for one screen is 110 × 160 × 16 = It becomes 281600 bits (about 34.4 kilobytes), which is 1 when the data is compressed to about 68/1000 by the image compression process.
It is image data of 9200 bits, and this 19200 bits is divided by the number of bits (4800 bits) that can be transmitted in 1 second (that is, 19200/4800 = 4 seconds).
Intermittent still images are transmitted at a rate of one frame. That is, in this case, the image data of 70400 bits (about 8.6 kilobytes) obtained by dividing 281600 bits by 4 is compressed to about 68/1000, and as shown in FIG. 5, a video including the image data of 4800 bits. It is a code.

As described above, in the present embodiment, it is possible to realize high-quality image transmission while making the most of the original feature of the video telephone device that it is possible to make a telephone call while looking at the face of the other party.

Further, in the conventional apparatus, in order to record the image to be transmitted, another recording apparatus (for example, an audio cassette tape recorder or the like) is required for recording, but in the present embodiment, When it is desired to record an image taken by the camera unit 4 by mounting the RAM 51 having a large capacity, the user can easily save a desired image by pressing the image capture switch 28. In this case, instead of the RAM 51, as shown in FIG. 12, a memory card 94 composed of a non-volatile flash memory or the like may be used, and the image to be transmitted is stored in the memory card 94, and By exchanging 94, a plurality of images can be stored.

In this case, the memory card 94 in which a plurality of image data is stored is mounted on, for example, a video printer 95 as shown in FIG.
The image data stored in 4 can be printed out.

FIG. 13 is an external view showing an example of the video printer 95. In FIG. 13, 96 is a slot for mounting the memory card 94, 97 is a power switch, 98 is various operation switches, and this video printer 95 is
256 bits each for R, G, and B, which are the three primary colors
It is a sublimation type thermal transfer color printer that outputs gradation (16,770,000 colors).

Specifically, first, after mounting the memory card 94 in the slot 96 of the video printer 95, the power switch 97 is turned on and the various operation switches 98 are turned on.
Is operated to select any image data stored in the memory card 94, and the selected image data is
It is printed out on 6-size dedicated paper.

Further, in the conventional videophone device, generally, it is made on the assumption that it is a stationary type, and once it is installed, it cannot be moved to another place and used, so that compressed data is transmitted. In addition, the camera unit which is an image input unit, the CRT which is an image display unit, and the telephone which is an audio input / output unit are integrally configured.
Although it was difficult to reduce the weight, it was difficult to obtain a portable device, and the existing telephone could not be used, but in the present embodiment,
Due to the high image quality of liquid crystal display devices in recent years, by adopting a color TFT type liquid crystal display device instead of a conventional CRT as a display device, it is possible to reduce power consumption and to reduce the size and weight of the device. It is possible. In this case, since a small flat fluorescent tube is used for the backlight used in the liquid crystal display device, LC
The D34 portion can be made even thinner, and the size and weight can be greatly reduced.

Further, in the conventional videophone device, since the camera section is fixed to the main body of the device, the image pickup range is limited, but the receiver 1 of the present embodiment is shown in FIGS. As shown, a small CCD camera formed in the center of the upper end of the device body 2 is rotatably attached to the device body 2 by a rotation shaft (not shown). It is possible to change the subject imaging area by the camera unit 4 without changing the orientation of the camera, and it is possible to freely photograph (capture an image) according to the operator's preference regardless of the arrangement position of the apparatus body 2.

Further, by providing a composite video input / output terminal, an analog / digital RGB input / output terminal or the like as a video input terminal to the ADC 37 which outputs the input signal from the television tuner section 8 to the buffer memory 40, a video cassette recorder (VCR) is provided. ) Or a video device including a laser disc player (LDP), or a computer or the like. For example, by connecting a video cassette recorder or the like having a video output terminal, a video image is displayed on the liquid crystal display unit 5. It is also possible to do so.

The image data compression method is not limited to the JPEG algorithm in this embodiment, and may be, for example, a block coding method, a predictive coding method, an orthogonal transform coding method, or the like. The data compression method is not limited to the CELP algorithm in this embodiment, but may be, for example, AD-PCM (Adaptive Differenti-
al Palse Code Modulation) method, VSELP (Vector
A Sum Excited Linear P-rediction) method or the like may be used.

Further, in the present embodiment, as the audio output method, the audio output from the speaker unit 7 is described as an example, but the present invention is not limited to this, and for example, the audio output by the speaker unit 7 is abolished. The voice output terminal T3 may be provided in the NCU 39 in FIG. 4 and the voice output terminal T3 may also be used as the earphone terminal 25 so that the voice can be heard by an earphone (not shown). In this case, as compared with the above-described embodiment, the apparatus main body 2 can be downsized by the space for disposing the speaker, and the power consumption of the amplifier and the like for driving the speaker can be suppressed.

[0155]

As described in detail above, according to the present invention,
It is possible to obtain a device having a camera unit and a display unit that is portable and can easily transmit and receive while checking the captured image on the display unit.

[Brief description of drawings]

FIG. 1 is a perspective view of a receiver of the present invention viewed from the front.

FIG. 2 is a perspective view of a receiver of the present invention viewed from the back side.

FIG. 3 is a diagram for explaining a connection relationship of the receiver of FIG.

FIG. 4 is a block diagram showing a schematic configuration of a receiver according to the present embodiment.

FIG. 5 is a diagram showing the structure of one frame of a multiplexed code.

FIG. 6 is an exploded perspective view of an LCD.

FIG. 7 is an exploded perspective view of a flat fluorescent tube.

FIG. 8 is a flowchart showing a control operation of a control unit.

9 is a flowchart showing the control operation of the control unit continued from FIG.

FIG. 10 is a transition diagram of communication states during transmission.

FIG. 11 is a communication state transition diagram at the time of reception.

FIG. 12 is a perspective view of a receiver according to another embodiment.

FIG. 13 is an external view showing an example of a video printer.

[Explanation of symbols]

1 receiver 2 device body 3 power supply 4 camera section 5 LCD display 6 Microphone section 6a microphone hole 7 speaker 7a Speaker hole 8 TV tuner section 9 Modulation / demodulation circuit 10 Image processing circuit 11 Voice processing circuit 21 power switch 22 Power indicator 23 Tuning button 24 volume dial 25 Earphone terminal 26 Video on / off switch 27 Video selector switch 28 Image capture switch 31 lens 32 CCD 33 DD 34 LCD 35 tuner 36 ADC 37 buffer memory 38 modem 39 NCU 40 buffer memory 41 Image compression / expansion circuit 42 ADC 43 video memory 44 video memory 45 DAC 46 ADC 47 Voice compression / expansion circuit 48 buffer memory 49 DAC 50 CPU 51 RAM 52 ROM 61 Front shield case 62 Liquid crystal display unit 63 Rear shield case 64 screen display opening 65 insulating tape 66 insulating tape 67 Scan driver circuit 68 Data driver circuit 69 LCD panel 70 Flexible substrate 71 Backlight opening 72 Double-sided tape 73 double-sided tape 74 double-sided tape 75 Flat type fluorescent tube 76 Front glass panel 77 Rear glass panel 78 frame glass 79,80 Lead piece 81 Exhaust pipe 82 Fluorescent screen 83 Resin sheet 84,85 double-sided tape 86 shield case 87 Spacer 88 substrate 89 lead wire 90 connector 91,92 double-sided tape 93 insulating tape 94 memory card 95 video printer T1 input / output terminal T2 image input terminal T3 audio input / output terminal B bus 101 modular jack type outlet 102 modular cable

Continuation of the front page (56) References JP-A-64-39149 (JP, A) JP-A-5-13181 (JP, A) JP-A-5-13180 (JP, A) JP-A-4-265086 (JP , A) JP-A-4-343579 (JP, A) Actually open 4-15380 (JP, U) Actually open 2-118371 (JP, U) Actually open 3-9589 (JP, U) Actually open 63-178962 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04N 5/225

Claims (2)

(57) [Claims] 1. A camera unit and a display unit for communicating with a partner device.
Intermittent still images taken by the camera unit during communication
An apparatus for transmitting and receiving an image together, and connecting means for connecting to a communication line, wherein the camera unit image data communication line and before the captured by
In particular it is transmitted to the partner device via the serial connection means
Intermittently captured by the camera unit during the communication.
When transmitting means for transmitting a still image , switch means, and operation of the switch means during the communication
In addition, the image data to be transmitted at the time of the operation is recorded.
By receiving the image data transmitted from the partner device via the still image recording means and the communication line and the connecting means , the communication is performed.
Still image captured by the camera unit of the other device
By receiving the image data received by receiving means for receiving the
A device having a camera unit and a display unit, comprising: a liquid crystal display unit that sequentially displays still images that are intermittently received by the unit. 2. A camera unit and a display unit, which communicate with a partner device.
Intermittent still images taken by the camera unit during communication
In a device for transmitting and receiving images to and from each other, a connection means for connecting to a communication line, and image data captured by the camera unit are transmitted to the communication line and the front side.
By transmitting to the partner device via the connection means
Intermittently captured by the camera unit during the communication.
Transmission means for transmitting a still image, and transmission from the partner device via the communication line and the connection means.
By receiving the received image data, the communication
Still image captured by the camera unit of the other device
By receiving the received image data by displaying the received image data.
Sequentially display still images received intermittently by means
Liquid crystal display means, first switch means, second switch means, and operation of the first switch means during the communication
In this case, the display target by the liquid crystal display means at the time of the operation
The received still image recording means for recording image data and the operation of the second switch means during the communication are performed.
In this case, record the image data to be transmitted during the operation.
A still image recording means, and a device having a camera unit and a display unit.
Place