KR100231820B1 - Video presenter having recall function - Google Patents

Abstract

Disclosed is a real image device having a recall function. The present invention provides an optical means for controlling incident light, a charge coupling device for outputting an image signal by receiving light incident from the optical means, a sampling unit for sampling an image signal from the charge coupling device, and the sampling unit. The present invention relates to a real image device including an analog / digital converter for converting an analog signal sampled from a digital signal into a digital signal, and a digital signal processor for outputting an image. The signal for a video is provided between the analog / digital converter and the digital signal processor. The passage and the still image signal passage is characterized in that formed separately. By employing the present invention, the still image can be recalled even while watching the video, and there is an effect of switching back to the video.

Description

Real-world imaging device with recall

The present invention relates to a real image device having a recall function, and more particularly, to a real image device having a recall function in which a still image made by a picture is made by viewing a moving image by viewing a still image on a real image device. It is about.

The real picture apparatus having a recall function may be applied to a video presenter.

1 is a block diagram of a physical imaging apparatus according to the prior art. Referring to FIG. 1, the light coupled through the lens 1 is converted into an image signal by a charge coupled device (CCD) 3. The video signal is sampled by the sampling section 5, but the signals up to this point are analog signals. Thus, the analog-to-digital converter (ADC) 7 converts the sampled analog signal into a digital signal. The converted digital signal is stored in the frame memory unit 9 or immediately passed through the frame memory unit 9 to the digital signal processor (DSP) 11 so that a video can be viewed, and an image is output. .

However, the conventional real image device has a problem in that only one cut can be made still and a signal can be processed using one frame memory so that a moving picture and a still picture cannot be viewed at the same time.

The present invention has been made to solve the above problems, and an object thereof is to provide a real image apparatus having a recall function of calling a still image made by viewing a moving image by making a still image on a real image apparatus.

1 is a block diagram of a physical imaging apparatus according to the prior art.

2 is a block diagram of an actual imaging apparatus having a recall function according to the present invention.

3 is a block diagram of another real imaging apparatus having a recall function according to the present invention.

4 is a block diagram of another real imaging apparatus having a recall function according to the present invention.

FIG. 5 is a detailed block diagram of the frame memory unit and the multiplexing unit of FIG. 3.

6 is a flowchart for controlling a memory unit of FIG. 5.

* Explanation of symbols for main parts of the drawings

21 lens 23 charge coupled device

25: sampling unit 27: analog / digital conversion unit

29: frame memory section 31: digital signal processing section

33: passage for video 35: passage for still image

37: multiplexing unit 39: memory

41: Horizontal address counter 43: Vertical address counter

45: read / write control unit 47: AND gate

In order to achieve the above object, a real imaging device having a recall function according to the present invention, the optical means for controlling the incident light, the charge coupling element for receiving the light incident from the optical means and outputs an image signal, A physical imaging apparatus comprising a sampling unit for sampling an image signal from a charge coupling device, an analog / digital conversion unit for converting the analog signal sampled by the sampling unit into a digital signal, and a digital signal processing unit for outputting an image,

The video signal path and the still image signal path are separated and formed between the analog / digital converter and the digital signal processor.

In the present invention, it is preferable that a frame memory section for storing digital data converted from an analog signal to a digital signal is provided in the still image signal path.

When storing two or more still images, there may be a plurality of the frame memory units.

The apparatus may further include a multiplexing unit configured to convert a signal flow between the two signal paths and the digital signal processing unit according to whether to view a video or a still image.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the real image device having a recall (recall) according to the present invention will be described as follows. 2 is a block diagram of one real image device having a recall function according to the present invention, FIG. 3 is a block diagram of another real image device having a recall function according to the present invention, and FIG. 4 is a recall diagram according to the present invention. Another real picture device with features is a block diagram.

The real imaging device according to the present invention includes a lens 21, a charge coupling element 23 for receiving light from the lens and converting the light into an electrical signal, a sampling unit 25 for sampling the signal, and the sampled signal. A converter 27 for converting the digital signal into a digital signal, a frame memory unit 29 for storing the digital signal, and a digital signal processing unit 31 for outputting the digital signal as an image.

On the other hand, the digital signal processor 31 outputs an image via the frame memory unit 29 as a still image, and the digital signal processor 31 is directly input to the digital signal processor 31 and output as an image.

The operation of the real imaging apparatus according to the present invention is as follows. Referring to FIG. 2, the lens 21 controls the incident light, the charge coupling element 23 receives the light incident from the lens 21, and outputs an image signal. The video signal from the charge coupling device 23 is sampled, and the analog / digital converter 27 converts the analog signal sampled from the sampling unit 25 into a digital signal, and the video path 33 and the still image path 35 are respectively connected to the analog / digital conversion unit 27 to recall a still image while watching a video, and the still image passage 35 stores a frame memory unit for storing analog / digital converted digital data. A 29 is provided, and the digital signal processing unit 31 processes the digital signal output through the moving image passage 33 or the still image passage 35 and outputs an image.

As another embodiment of the present invention, the configuration of the real imaging apparatus illustrated in FIG. 3 is the same as the real imaging apparatus illustrated in FIG. 2. The only difference is that the device for selecting the moving picture and the still picture has been converted from a simple switch to a multiplexing part.

The operation is as follows. The lens 21 controls the incident light, the charge coupling element 23 receives the light incident from the lens 21 and outputs an image signal, and the sampling unit 25 is connected to the charge coupling element 23. The sampled video signal is sampled, and the analog / digital converter 27 converts the analog signal sampled by the sampling unit 25 into a digital signal, and the video channel 33 and the still image channel 35 are the analog / digital signals. It is connected to each of the digital conversion unit 27 can recall a still image while watching a video, and the still image passage 35 is provided with a frame memory unit 29 for storing analog / digital converted digital data. The multiplexer 37 changes the signal flow according to whether to watch a video or a still image, and the digital signal processor 31 receives the digital signal from the multiplexer 37 to receive a digital signal. And Li, and outputs the image.

As another embodiment of the present invention, the configuration of the real imaging apparatus illustrated in FIG. 4 is the same as the configuration illustrated in FIG. 3. The difference is that the number of frame memories for storing still picture signals is increased. The plurality of frame memories have an advantage of storing two or more cut still images.

Operation of the real imaging apparatus illustrated in FIG. 4 is as follows. The lens 21 controls the incident light, the charge coupling element 23 receives the light incident from the lens 21 and outputs an image signal, and the sampling unit 25 is connected to the charge coupling element 23. The sampled video signal is sampled, and the analog / digital converter 27 converts the analog signal sampled by the sampling unit 25 into a digital signal, and the video channel 33 and the still image channel 35 are the analog / digital signals. Each frame is connected to the digital conversion unit 27 to recall a still image while watching a video, and the still image passage 35 is provided with a plurality of frame memory units 29 for storing analog / digital converted digital data. The multiplexing unit 37 changes the signal flow according to whether to watch a video or a still image, and the digital signal processing unit 31 receives the digital signal from the multiplexing unit 37. Processing a call and outputs the image.

FIG. 5 is a detailed block diagram of the frame memory unit and the multiplexing unit of FIG. 3. Referring to FIG. 5, the frame memory unit 29 includes a horizontal address counter 41 for controlling the position of the horizontal pixel, a vertical address counter 43 for controlling the position of the vertical scanning line, and a memory 39 of 1024 X 768 pixel. And a read / write control section 45 composed of two AND gates 47.

Freeze and recall operations must be synchronized with the field signal. If not, image breakage occurs when the still image is converted to a moving image or the moving image is converted into a still image.

The operations of recalls 1 and 2 are shown in Table 1.

Recall 1 Recall 2 Operating status L L unused L H Still image → Movie H L Video → Still image H H unused

Table 1

Recalls 1 and 2 are controlled by a microcomputer (not shown), and (L, L) and (H, H) are not used, and when (L, H), the data in the video passage 33 in the multiplexer 37 is Is inputted to the digital signal processor 31 to output a moving image, and in the case of (H, L), data in the still image passage 35 is input to the digital signal processor 31 to output a still image.

FIG. 6 is a flowchart for controlling a memory unit of FIG. 5. Referring to FIG. 6, step 1 for checking whether a freeze button is pressed, step 1 for returning to step 1 if the freeze button is not pressed, and outputting a freeze control signal if pressed, and checking whether the recall button is pressed Step 3, if the recall button is not pressed, check if the freeze button is depressed, and if it is pressed, return to step 2; if it is not pressed, return to step 3; if it is pressed, recall 1 and 2 The control of the memory unit is performed by step 5 which returns control to step 3.

The real image device having a recall function according to the present invention separates the video signal path and the still image signal path, and the video signal is directly input from the signal converter to the digital signal processor to output the image, and the still image signal is the signal converter. A frame memory unit is provided between the digital signal processor and a digital signal processor. The signal passed through the frame memory unit is inputted to the digital signal processor to output an image. Thus, still images can be recalled while watching a video, and there is an effect of switching back to the video.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

Claims (3)

An optical means for controlling the incident light, a charge coupling element for receiving the light incident from the optical means and outputting an image signal, a sampling unit for sampling the image signal from the charge coupling element, and a sampling unit An actual imaging apparatus having an analog / digital converter for converting an analog signal into a digital signal and a digital signal processor for outputting an image, And a video signal path and a still image signal path are separated between the analog / digital converter and the digital signal processor. The method of claim 1, And at least one frame memory unit configured to store analog / digital converted digital data in the still image signal path. The method of claim 1, And a multiplexing unit for converting a signal flow between the two signal paths and the digital signal processing unit according to whether to view a video or a still image.