JPH09121197A - Broadcast signal recording system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcast signal recording system suitable for air check or the like. SOLUTION: The system is provided with a registration means (F102 by which a specific character string is registered as a keyword, and a control means (F106, F107, F110) discriminating (F105, F109) the presence of a character string corresponding to the keyword registered with respect to character data obtained by a character decode means and applying an operation control signal to a recording means depending on the result of discrimination. That is, the recording operation desired by the user is naturally executed by controlling the start/stop or the like of the recording in response to the multiplexed character data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast signal suitable as a device for receiving a broadcast signal in which character data is multiplexed and recording the broadcast signal or the like, such as FM multiplex broadcasting or teletext of television. It concerns a recording system.

[0002]

2. Description of the Related Art In FM multiplex broadcasting generally known as "visible radio", character data is multiplexed with an audio signal for broadcasting. The character data multiplexed and broadcast is extracted by a character decoder in a radio receiver and displayed as characters on a small display unit provided in the radio receiver, for example.

As the character data, for example, a character program composed of a plurality of pages is repeatedly broadcast,
For example, in the case of a weather forecast text program, text data as shown in FIG. 5 is broadcast. 5 (a) and 5 (b) exemplify two pages as a weather forecast text program.
The maximum amount of text data for a page is 1 except for the title (for example, "Miel Radio Tenkiyohou").
It consists of 5 characters x 2 lines. And this 15 characters x 2
As the character data of the line, for example, as shown in FIG.
Tokyo> (Tonight) Barely Cloudy ”will be broadcast. Then, the characters are displayed on the display unit in such a form as shown in FIG. Further, FIGS. 6A and 6B show an example of two pages of traffic information as a character program.

In addition, character data for guiding the content of radio broadcasting is also transmitted. For example, during broadcasting of a music program, the character data multiplexed while each song is playing is an artist name or song name as shown in FIGS. 7A and 7B, and by displaying these, It is possible to present the song name, etc.

[0005]

By the way, so-called air-check recording, in which a user records an FM broadcast or the like on a tape or a disk by using a tape recorder or a disk recorder, is widely used. For example, when a favorite song or a song by a favorite artist is broadcast,
Air check recordings will be made, and tapes and discs will be made that collect your favorite songs. However, normally, the contents to be broadcast are only confirmed in newspapers or specialized magazines, and the program contents are not so detailed. For this reason, there is a problem that it is difficult to perform air check recording or the like because the time when the favorite song is broadcast is unknown.

Further, in a recording device using a mini disk which is a kind of magneto-optical disk, not only voice but also character information such as a title corresponding to each track (song) can be recorded. ing. Therefore, for example, when using a mini disk recorder for air check,
Enter the song name and artist name corresponding to the recorded song,
The operation of recording is performed. In particular, in the case of air check recording arbitrarily performed by the user, it is preferable to perform character recording so that the music title or the like will not be lost when it is reproduced later. However, such a character input operation is very troublesome, and there is a problem that it is difficult to effectively use the function.

[0007]

SUMMARY OF THE INVENTION In view of such circumstances, an object of the present invention is to provide a broadcast signal recording system suitable for recording a broadcast signal such as an air check.

Therefore, the registration means capable of registering a specific character string as a keyword and the presence / absence of a character string corresponding to the registered keyword in the character data obtained by the character decoding means are discriminated. A control unit is provided that can supply an operation control signal to the recording unit according to the determination result. That is, by controlling the start, stop, etc. of the recording operation according to the multiplexed character data, the recording operation desired by the user can be automatically executed.

If a character string corresponding to the registered keyword is present in the character data obtained by the character decoding means, the character string or all or part of the extracted character data including the character string is extracted. Is provided to the recording means and recorded on the recording medium. As a result, not only audio / video, etc., but also the required character data can be automatically recorded.

Further, a registration means capable of automatically extracting a character string from the character data obtained by the character decoding means and registering it as a keyword, and a registration for the character data obtained by the character decoding means. There is provided control means for determining whether or not there is a character string corresponding to the selected specific keyword among the selected keywords and supplying an operation control signal to the recording means according to the determination result. By doing so, the keyword registration operation is simplified.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Each example as an embodiment of the present invention will be described below with reference to FIGS. The broadcast data output system of the embodiment is compatible with FM multiplex broadcasting, but here, an example of a system using an FM receiving device and a personal computer will be given. It is assumed that the FM receiving device is integrally provided with a recording device section that uses a mini disk (magneto-optical disk) as a recording medium.

FIG. 1 is a block diagram showing the configuration of a system using an FM receiver and a personal computer.
The FM receiver unit 1 includes, for example, a function part relating to character data in addition to a normal function as an FM radio receiver, and an interface means for the personal computer 2.

In the FM receiver unit 1, the signal received by the antenna 11 is locally generated by the PLL in the front end 12.
The frequency is selected by the control of the unit 13 for the reception of the required broadcasting station. The signal of the frequency (broadcasting station) extracted by the front end 12 is subjected to intermediate frequency processing in the intermediate frequency amplification section 14, and then subjected to detection demodulation processing in the FM detection section 15. At the time of output from the FM detector 15, a signal having a form whose frequency allocation is shown in FIG. 2 is obtained. That is, L and R stereo audio signal components (L + R) (L
-R) and a character data signal component multiplexed with this.

Of these, signal components of 53 KHz or less are extracted as L and R audio signals by the processing of the multiplex section 16. The L and R audio signals are subjected to necessary processing such as volume level and equalizing in the audio processing unit, and are supplied to the speaker unit 19 via the amplifier 18.
It is output as broadcast audio.

Further, L, R from the multiplex section 16
The audio signal is also supplied to a portion as a mini disk recording device section. That is, in the A / D converter 30, it is supplied to the encoder 31 after being converted into a digital data form of 16-bit quantization and 44.1 KHz sampling. The encoder 31 first performs compression processing for compressing the data amount to about 1/5. The compressed digital data is taken into the internal buffer memory and is read every time a predetermined amount of data is accumulated. Then, the data read from the buffer memory is subjected to processing such as CIRC encoding and EFM modulation, and is supplied to the recording unit 32 as recording data.

The recording unit 32 is loaded with a mini disk 90 serving as a recording medium, and is provided with a mini disk rotation drive mechanism, an optical head mechanism, a magnetic head mechanism, a servo mechanism and the like. The record data is recorded on the mini disc 90. Encoder 31
The operation of each mechanism of the recording unit 32 is controlled by a controller 33 formed by a microcomputer.

As shown in the frequency allocation of FIG. 2, character data is LMSK (Le
vel controlled minimum shift keying) is used for modulation, and is first multiplexed in order to extract the multiplexed character data.
From the output of No. 5, the band pass filter 20 extracts the signal component in the band near 76 KHz. Then, the signal component in the band near 76 KHz is sent to the character data decoder 21,
Character data is extracted. The processing here is LMS
The K demodulation process and the error correction process are performed, and the character string in which one character is represented by the JIS 2-byte code is extracted.

The data as the extracted character string is converted by the serial converter 22 into a signal form for serial transmission by RS232C, for example, and transmitted to the personal computer 2. In the personal computer 2, the CPU 41 is capable of performing character string determination on character data supplied by serial communication and required processing associated with the determination based on a program corresponding to character data stored in the ROM 42. There is. This operation will be described later.

Further, the CPU 41 can generate an image signal based on the supplied character data and drive the display driver 44 to display an image corresponding to the input character string data on the display device 3. The RAM 43 is used for registering a character string that is a keyword in the operation of this example. The keyboard 4 is used as a user's input device for the personal computer 2, and as an operation in this example, the user is used for keyword registration and keyword selection.

The first operation example for air check recording that can be executed in such a broadcast signal recording system is described below.
The operation example of FIG. 3 will be described with reference to FIG. 3, and the second operation example will be described with reference to FIG. In the first operation example, the user registers, as a keyword, a character string indicating a target of a voice to be recorded, such as a favorite artist name or song name. When music is broadcast, program information such as artist name and song name is sent as character data as shown in FIG. 7, but the personal computer 2 uses the character data and the registered keyword as the recording device unit. Will be controlled.

In the processing of FIG. 3 executed by the CPU 41, steps F101, F102, F103 are processing relating to keyword registration. At the time when keyword registration is not done,
Since a negative result is obtained in step F103, the process of step F104 and the subsequent steps cannot be performed. Therefore, in order to execute the automatic recording operation of this example, the user must first perform keyword registration. When the user operates the keyboard 4 to input a character string, the CPU 41 registers the input character string as a keyword in the RAM 43 (F101, F102).
. For example, an artist name or the like is registered as a keyword.

When at least one keyword is registered, the process proceeds to step F104, and the input of the character string data extracted by the character data decoder 21 is confirmed. If character string data has been input, step F1
At 05, it is confirmed whether or not the registered character string is included in the input character string data. For example, while a song called "Emotions" by Mariah Carey is being broadcast as FM broadcast sound, the text information to be multiplexed is "Miel Radio Bang Mijou <MARIAH CAREY>EMOTIONS".
The character string data "" is repeatedly sent, and this enables the display as shown in FIG. 7A in a receiver with a display function.

At this time, in the CPU 41 of the personal computer 2 of this example, "Miel Radio Bang Mijoho <MARIAH CAREY> EMOTION
Although the character string data "S" is input, the existence of a character string matching the registered keyword is confirmed in this character string.

If there is no character string that matches the keyword, the process directly returns to step F101 and waits for the next character string input in step F104. However, for example, it is assumed that the user wants to perform air check recording of Mariah Carey's song and has registered the character string "MARIAH CAREY" as a keyword. Then, since a character string matching the keyword exists in the input character string data, the process proceeds to step F106.

In step F106, the CPU 41 converts all or part of the input character string data into serial data again, and transmits the serial data to the FM receiver 1. And FM
In the receiving device 1, the character string data is supplied to the controller 33. For example, "MARIAH
The character string “CARE EMOTIONS” is transmitted to the controller 33. Followed by Step F1
In 07, the CPU 41 transmits a control signal for instructing the controller 33 to start the recording operation. In response to this, the controller 33 starts the recording operation by the encoder 31 and the recording unit 32, and the A / D
The broadcast audio signal supplied via the converter 30 will be recorded.

That is, the song Mariah Carey's "Emotions" to be broadcast is recorded on the mini disk 90. Also, in the mini disk system, it is possible to record the character information such as the song name on the recorded track, but the character information sent to the controller 33 in step F106 corresponds to the recorded track. It is treated as input character information, and the mini disc 90
Is recorded in the management information area (user TOC).

After the CPU 41 gives the instruction to start the recording in this way, in steps F108 and F109, each time the character string data extracted by the character data decoder 21 is input, the character string data Check if the keyword that is the basis of the recording start instruction is included. In the case of the above example, it is confirmed whether or not the character string “MARIAH CAREY” is included. The character data, which is program information repeatedly sent while a certain song is broadcast, has the same contents until the end of the song. For example, when Mariah Carey's song "Emotions" began to air until the song ended, "Miel Radio Bang Mijou <MARI
The character data "AH CAREY>EMOTIONS" is repeatedly sent.

Therefore, if the character data is changed and it is confirmed that the extracted character data does not include a character string that serves as a keyword, it can be determined that the song recorded up to that point has been broadcast. Therefore, if it is confirmed in step F109 that the same character string as the keyword has disappeared,
In step F110, a control signal instructing the controller 33 to stop recording is output. In response to this, the controller 33 ends the recording operation by the encoder 31 and the recording unit 32.

By the CPU 41 performing the above-described processing, if the user registers, for example, the name of a favorite artist as a keyword, the mini disc 90 is automatically displayed in response to the music of the artist being broadcast. Since it is recorded, the desired air check recording is realized without the need to check the program in a newspaper or the like and without the need to actually perform the recording operation while listening to the broadcast.

Next, the processing of FIG. 4 will be described as a second operation example. In this operation example, the extracted character data is compared with a keyword, and the controller 3 determines whether or not the same character string exists.
Although instructing recording start and recording stop to 3 is the same, it is intended to simplify the user's keyword registration operation. That is, in step F202, each time the character string data extracted by the character data decoder 21 is input,
In step F203, it is confirmed whether or not a character string suitable for the keyword exists, and if it exists, the character string is registered as a keyword in step F204.

The judgment as to whether or not the character string is suitable for the keyword differs depending on the usage pattern. For example, when the purpose is to record music as in this example, the artist name in the program information is extracted. When the character data not including the artist name is received as shown in FIGS. 5 and 6, it is determined that there is no character suitable for the keyword, while the character data as shown in FIG. 7 is extracted. Then, the artist name is extracted from them and the keyword is registered.

When the user wants to perform automatic recording based on the match between the keyword and the character string, the user selects a certain keyword from the registered keywords. That is, many keywords are RA by the processing of steps F202 to F204.
Although registered in M43, the user performs a keyword selection operation at a certain point. For example, the CPU 41 displays a list of registered keywords on the display device 3 and prompts the user to make a selection.

When the user selects a certain keyword by operating the keyboard 4, the subsequent processing proceeds from step F201 to step F205. Then, every time the character string data extracted by the character data decoder 21 is input, it is confirmed whether or not the same character string as the selected keyword exists in the character string, and as in the example of FIG. If it exists, the character string data is transmitted to the controller 33 and the recording start control signal is transmitted (F205, F206, F207, F208).

During recording, in steps F209 and F210, each time the character string data extracted by the character data decoder 21 is input, the selection that has become the reference for the recording start instruction of this time is included in the character string. It is confirmed whether or not the keyword is included, and if it is confirmed that the keyword is not included, it is determined that the broadcast of the song recorded up to that point has ended. Then, in step F211, a control signal instructing the controller 33 to stop recording is output.

By performing such processing, the first
The same effect as in the case of the operation example can be obtained, and the keyword registration operation is simplified, resulting in a system that is easier to use. In addition, keywords such as artist name are preliminarily R
It may be held as OM data.

Although the embodiment has been described above, the present invention can be modified in various ways. First, although the case of the FM broadcast receiving device has been described as an example, the same operation can be performed by a receiving device corresponding to a character broadcast in which character data is also multiplexed and transmitted to a television signal. Furthermore, RDS (Radi which is put to practical use in Europe
o Data System) receiver, etc. Also, the recording device section can be adopted not only as an integrated type / separate type, but also as a recording device compatible with other recording media such as analog tape recorders, digital tape recorders, and magnetic disks. It may be. Further, the system using the personal computer 2 has been described, but the present invention can also be realized as a receiving device in which a microcomputer that executes the above processing is installed.

As the operation, in the above example, both the recording start / stop control signal and the character data are supplied to the recording device section, but an example in which one of them is supplied is also conceivable.
For example, if only broadcast audio is automatically recorded, it is not necessary to supply character data.

A system for recording only character data without considering recording of broadcast sound can be realized in the same manner.
That is, when the character data including the keyword is received and extracted, the character data itself is recorded, and the broadcast sound at that time is not recorded. By doing so, it is possible to realize a usage mode in which information obtained as multiplexed teletext is recorded and the contents are confirmed later.

Further, when considering a character broadcast or communication karaoke to be multiplexed with a television broadcast, it is possible to automatically record a television broadcast program or a karaoke program by the same operation as the above example.

[0040]

As described above, in the broadcast signal recording system of the present invention, it is determined whether or not there is a character string corresponding to the keyword registered in the character data obtained by the character decoding means, and the result of the determination is used. Accordingly, since the recording operation of the recording unit is controlled to be executed or stopped, the recording operation such as the air check desired by the user can be automatically executed. As a result, the desired broadcast recording can be realized without the user performing a troublesome operation such as confirming the program or performing a recording operation when a desired song is played while listening to the broadcast all the time.

If a character string corresponding to the registered keyword is present in the character data obtained by the character decoding means, the character string or all or part of the extracted character data including the character string is extracted. Is supplied to the recording means and recorded in the recording medium, it is possible to automatically record the required character data even in the multiplexed character data.

Further, a registration means for automatically extracting a character string from the character data obtained by the character decoding means and registering it as a keyword, and a registration for the character data obtained by the character decoding means. The user is registered by providing a control means capable of supplying an operation control signal to the recording means according to the determination result of the presence / absence of a character string corresponding to the selected specific keyword among the selected keywords. The desired automatic recording operation can be executed only by the selection operation from the keywords, and the operability is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of an example of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of frequency allocation of FM multiplex broadcasting.

FIG. 3 is a flowchart of a process that is a first operation example of the embodiment.

FIG. 4 is a flowchart of a process that is a second operation example of the embodiment.

FIG. 5 is an explanatory diagram of character data in FM multiplex broadcasting.

FIG. 6 is an explanatory diagram of character data in FM multiplex broadcasting.

FIG. 7 is an explanatory diagram of character data in FM multiplex broadcasting.

[Explanation of symbols]

 1 FM Receiver 2 Personal Computer 3 Display Device 4 Keyboard 20 Band Pass Filter 21 Character Data Decoder 22 Serial Converter 31 Encoder 32 Recorder 33 Controller 41 CPU 42 ROM 43 RAM

Claims (4)

[Claims] 1. A receiving unit for receiving a broadcast signal in which character data is multiplexed, a recording unit for recording the broadcast signal received by the receiving unit on a recording medium, and a broadcast received by the receiving unit. Character decoding means capable of extracting character data from a signal, registration means capable of registering a specific character string as a keyword, and registration of the character data obtained by the character decoding means with the registration means And a control means capable of determining the presence or absence of a character string corresponding to the generated keyword and supplying an operation control signal to the recording means according to the determination result. Recording system. 2. The control means instructs the recording means to start recording when it is confirmed that a character string corresponding to the keyword is present in the character data obtained by the character decoding means. Along with supplying
When it is confirmed that the character string corresponding to the keyword does not exist in the character data obtained by the character decoding unit, a control signal for instructing the recording unit to stop recording is supplied. Claim 1
The broadcast signal recording system described in. 3. Receiving means for receiving a broadcast signal in which character data is multiplexed, at least recording means for recording the character data in a recording medium, and character data from the broadcast signal received by the receiving means. Character decoding means that can be extracted, registration means that can register a specific character string as a keyword, and character data obtained by the character decoding means that corresponds to the keyword registered in the registration means. When the string exists, the character string, or all or a part of the extracted character data including the character string is supplied to the recording unit, and a control unit capable of recording the recording medium, A broadcast signal recording system characterized by being configured. 4. A receiving means for receiving a broadcast signal in which character data is multiplexed, a recording means capable of recording the broadcast signal or character data received by the receiving means on a recording medium, and the receiving means. Character decoding means capable of extracting character data from the received broadcast signal, and registration means capable of automatically extracting a character string from the character data obtained by the character decoding means and registering it as a keyword In the character data obtained by the character decoding means, the presence / absence of a character string corresponding to the specific keyword selected from the keywords registered in the registration means is determined, and according to the determination result, A broadcast signal recording system characterized by comprising: a control means capable of supplying an operation control signal to the recording means. Temu.