JPH10290441A - Music program distributing method and receiving/ reproducing device for digital multichannel broadcast system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable reservation recording of a desired music for the unit of one piece of music by distribution a data stream containing a program list and a broadcast alarm signal wile multiplexing it on program data, and sending the ID of a certain music and a start signal as an alarm signal before broadcasting that music. SOLUTION: A data stream 100 is composed of a program list 101 and an alarm signal 102, which is inserted into this data stream 100 at any suitable time point, and distributed being multiplexed on program data 200. The program list 101 is the list of the music scheduled to be broadcaster in music programs during a prescribed period including other channels as well. The broadcast alarm signal 102 is sent out before the broadcast of the music part 202 in the program data 200 synchronously with its broadcasting timing. This broadcast alarm signal 102 contains an ID 103 of the music to be broadcaster later, broadcasting time 104 of this music, and start signal 105 to be sent out just before broadcasting the music.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital multi-channel broadcasting system, and more particularly, to a method of distributing a music program in a digital multi-channel broadcasting system and a receiving and reproducing apparatus for receiving and reproducing the music program. It is about.

[0002]

2. Description of the Related Art Digital multi-channel broadcasting is capable of broadcasting 4 to 8 channels in one carrier frequency band by multiplexing and transmitting program data obtained by compressing and encoding video signals and audio signals such as TV programs. It is. Currently, a CS digital multi-channel broadcasting system using a communication satellite (hereinafter, CS) as a relay station is in operation. In this system, the program data is compressed by the data compression technology based on the MPEG2 standard into video broadcasting of 50 channels or more in one CS.
Audio broadcasting of 00 channels or more can be distributed.

In order to confirm the broadcast schedule of a large number of programs, the CS digital multi-channel broadcasting system has an electronic program guide (hereinafter, EPG) display function. This is because program guide information describing the broadcast time and contents of a program broadcast on each channel is multiplexed with program data and transmitted, and the program guide information is obtained from multiplexed data received by a receiving / reproducing apparatus dedicated to digital multi-channel broadcasting. Extract information. Then, when the user operates the reception / playback apparatus, a program guide in a predetermined format is output to the display. Further, a channel dedicated to a program guide is also provided, and when this channel is selected, a list of programs broadcast on all the channels during a predetermined period is displayed. In addition, link information to each channel is described in the EPG of this channel, and the user can input the channel number of the program while displaying the EPG or move the cursor displayed on the screen to the program column. When a desired program is selected, the channel is switched to the selected channel.

[0004] In a receiving / reproducing apparatus which supports reservation viewing and recording, when a program to be broadcast is selected by EPG,
The receiving / reproducing device operates according to the broadcast time of the program. That is, the channel of the selected program is automatically selected, and a predetermined decompression / decoding process is performed to reproduce / output an analog video signal or audio signal. When recording a program, the video signal and the audio signal are recorded on an externally connected video tape recorder or the like. In the case of audio data, an expanded digital signal can be directly input by connecting a digital recording device such as a mini-disc (hereinafter, MD) recorder. Then, through a D / D conversion process adapted to the format of the recording device, the digital signal is recorded as it is on a predetermined storage medium.

[0005] Furthermore, pay-per-view (hereinafter referred to as PP), in which a program to be viewed is charged in program units or time units.
V) In the case of broadcasting, viewing is possible in conjunction with the charging system of the CS digital multi-channel broadcasting system.
In this method, a viewing log is written on an IC card set in an IC card interface unit of a receiving and reproducing apparatus, and the log is transmitted to a broadcasting company such as a broadcasting station via a telephone line at an appropriate communication opportunity. The broadcaster collects a viewing fee based on the viewing log by a predetermined method such as a credit card approval.

[0006]

The EPG function is an indispensable function for selecting a desired program from a huge number of programs broadcast on many channels. However, unlike the broadcasting of continuous contents in one program such as a movie, a music program broadcasts a plurality of music pieces in one program. Furthermore, a narration such as a disc jockey (hereinafter, DJ) is often inserted between music pieces. If the viewer wants to record the desired song, this DJ
There is a demand that I want to cut the voice of. If you do air check in real time, if you record by timer reservation, this unnecessary part will be recorded together.

[0007] Since EPG can be reserved on a program basis,
If you want to record only the songs you want, you have to do more cumbersome editing such as dubbing after recording the entire program. Furthermore, when a plurality of desired songs are broadcast in separate programs, extremely complicated work is required. Also, when the broadcast music program is a PPV program, a viewing fee is imposed on a program-by-program basis only by recording only the desired music. Therefore, the economic burden on the viewer is increased. Of course, it is sufficient to describe the music to be broadcast in the music program and the scheduled broadcast time in the EPG, and to make the PPV in music units. However, it is hard to say that a desired song is always broadcast at a scheduled time in a live broadcast or the like. Also,
It is naturally conceivable that the broadcast schedule will be changed.

Accordingly, the present invention provides a digital multi-channel broadcasting system, in which a large number of music pieces broadcasted by a plurality of music programs can be flexibly adapted to live broadcast or a change in a broadcast schedule, and a desired music piece can be selected in units of one music piece. To provide a program distribution method and a receiving / playback apparatus for the program which can be reserved and recorded by the program.

[0009]

A distribution method of a music program in a digital multi-channel broadcasting system has the following requirements (a) to (c). (A) A data stream including a program list and a broadcast notification signal is multiplexed with program data obtained by compressing and encoding an audio signal broadcasted on the same channel and distributed.

(B) The program list describes the song ID, title, scheduled broadcast time, and the like of the song scheduled to be broadcast in the music program scheduled to be broadcast on the channel during a predetermined period.

(C) While the music program is being broadcast on the channel, the ID of the music is transmitted as the broadcast notification signal before the broadcasting of the music starts, and the start signal is transmitted immediately before the broadcasting of the music starts. It is transmitted as the notification signal. More preferably, the program list describes, for a music program scheduled to be broadcast on a channel different from the channel, a song ID, a title, a scheduled broadcast time, a broadcast channel, and the like of a song to be broadcast.

[0012] A receiving and reproducing apparatus for receiving and reproducing program data distributed by the method described above extracts means for extracting the program list from a received signal and displaying the list on a display as a list in a predetermined format; Means for selecting the desired music from the list and making a reservation, and detecting the reserved music ID from the received signal, extracting the data of the reserved music from the program data according to the start signal. And a means for reading the recorded music data from the storage unit.

When the reserved music is broadcast a plurality of times during the predetermined period, the reception / playback apparatus stores the music data of the reserved music in the storage unit in accordance with a time at which the music is broadcast earliest. It is desirable to have means for recording. Further, it may include means for displaying the classification information included in the music list in the list, and means for allowing the user to search and freely select music distributed using the classification information as a key. .

[0014] Further, when recording of the music data of the reserved music in the storage unit is completed, means for notifying a user that the music data can be read from the storage unit may be provided. Good. The receiving and reproducing device,
The music data may be recorded or read out in conjunction with a charging system of a digital multi-channel broadcasting system.

A means for extracting additional information such as a title and a singer's name of the reserved music from the program list; a means for recording the additional information together with the music data of the music in the storage unit; Means for reading out the additional information from the storage unit and displaying the contents in characters, the contents of the recorded music can be seen at a glance.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A CS digital multi-channel broadcasting system will be described as an embodiment of a digital multi-channel broadcasting system including a music program distribution method and a receiving / reproducing apparatus according to the present invention. FIG. 1 is a basic configuration diagram of the broadcasting station, which comprises a broadcasting station 1, a CS 10, and a receiving / reproducing apparatus 20. The broadcasting station 1 and the receiving / reproducing apparatus 20 are connected by a telephone line 40 in a timely manner. These basic configurations are exactly the same as conventional CS digital multi-channel broadcasting.

FIG. 2 is a configuration diagram of the data stream 100 and the program data 200 distributed by the music program distribution method according to the embodiment of the present invention. The program data 200 is data obtained by compressing and encoding an audio signal of a music program by the MPEG2 method, and includes data 201 such as a DJ portion and music data 20.
Consists of one. Of course, these data are transmitted serially in time series, and the DJ section and the music section do not exist as individual data like packets. The data stream 100 multiplexed with the program data includes a program list 101 and the data stream 1.
And an annunciation signal 102 inserted at an appropriate point in time 00. The program list 101 is a list of songs scheduled to be broadcast in a music program including other channels during a predetermined period. This list includes the list ID, which is the number of the list itself, and data such as the song name, broadcast channel, and scheduled broadcast time corresponding to the ID of each song scheduled to be broadcast, along with songs such as genres, singers, performers, and conductors. Related incidental information is described. Then, the program list 101 is sequentially rewritten with the latest information, and the list ID is updated each time. The broadcast notification signal 102 is the program data 2
The song is transmitted before the broadcast in synchronization with the broadcast timing of the music portion 202 of 00. The broadcast notification signal 102 includes an ID 103 of a song to be broadcast thereafter, a broadcast time 104 of the song, and a start signal 105 transmitted immediately before the song is broadcast.

A plurality of data multiplexed channels exist in one carrier frequency band. The music programs for a plurality of channels are transmitted through a multiplex processing system similar to the conventional CS digital multi-channel broadcasting. FIG. 3 shows the concept of the multiprocessing system. In this embodiment, the data is multiplexed with audio data such as a program list and a data stream composed of a broadcast notification signal, such as a music program, and transmitted on one channel. Then, a plurality of channels transmitted in the same carrier frequency band are program-multiplexed. Here, scramble data is added as needed. These digital data are QPSK modulated and CS
Sent to Of course, the program data of another channel transmitted at this carrier frequency or another carrier frequency is not limited to audio data, and may include video data and audio data such as TV broadcasts.

FIG. 4 shows a receiving and reproducing apparatus 20 according to the present embodiment.
FIG. An intermediate frequency (IF) signal received / converted by a parabolic antenna or the like is input, and a RAM,
A central control unit 21 including a ROM controls peripheral devices and the like via a bus 22 to input / output data and control the reception / reproduction device 20. Hereinafter, control of the reception / reproduction device 20 by the central control device 21 will be described.

When a user's program selection operation is received from the remote controller 32 or the operation input unit 31, the tuning unit 23 is controlled and
Tune to the IF of the carrier that contains the selected program. Then, the demodulator 24 is controlled to demodulate the program multiplexed data in which a plurality of programs are multiplexed from the IF signal. Control is performed so that the multiplex separation unit 25 separates this program multiplex data as multiplex data for each channel. Also, control is performed so that the demultiplexing unit 25 performs error correction and descrambling as necessary. Then, the separated multiplexed data is input to the MPEG2 decoding unit 26. Here, the decompression / decompression processing of the compression encoded data is performed. The decoded signal is D / A-converted by an audio control unit 27 and a video control unit 28, and is converted into an audio signal or a video signal by an audio amplifier or a TV.
It is input to a receiver or the like.

The receiving / reproducing apparatus 20 according to the present embodiment has a function of reproducing a data stream multiplexed on a music program and reproducing program data based on this processing, in addition to the function of reproducing a normal program. It also has the function of recording and recording. The central control unit 21 extracts the program list in the data stream separated by the multiplex separation unit 25 together with the audio data of the music program. By monitoring the ID of the program list, the latest program list is always fetched and processed. When a list display command is received from the remote controller 32 or the operation input unit 31, the fetched program list is displayed as T
The IDs of the tunes to be broadcast and the names of the tunes that can be heard are displayed in a list on a display such as a V receiver or a display panel installed in the receiving and reproducing apparatus 20.

Further, in this list, genres and singer names in the program list (for performances, performers, conductors, etc.) are displayed as classification information, and the classification information is used as a search key to select music to be broadcast. Can be searched. This search function has a powerful search function such as a logical product search, a logical sum search, or an ambiguous search such as performing a search by inputting vague related matters. Of course, the search key is not limited to the genre and singer name, and various additional information included in the program list can be appropriately set as the search key.

When the user selects a music piece to be reserved, the user operates the remote controller 32 or the like to enter the ID number of the music piece while referring to this list, or moves the cursor displayed on the display to enter a music piece field. And specify it. When all the songs to be reserved have been designated and a reservation decision input has been made, the central control unit 21 creates a schedule that allows earliest listening when the same song is broadcast a plurality of times during a predetermined period. If there is a change in the received program list while waiting for the reservation, the schedule is reconfigured.

The music piece reserved in this way is reproduced according to a schedule or recorded on an appropriate recording medium. In this embodiment, the MD34 is used as a recording medium for recording the reserved music. Therefore, the MD recorder unit 33 is built in or externally connected to the receiving and reproducing apparatus. Of course, the recording medium is not limited to the MD, but may be any system and form such as an analog cassette tape, digital audio tape, or hard disk. If the music program to be broadcast is accompanied by a video such as a live broadcast, the audio and the video may be recorded on an appropriate recording medium such as a video tape or a DVD-RAM. The central controller 21 controls the tuning unit 23, the demodulation unit 24, and the demultiplexing unit 25 so that the reserved channel is selected at a time slightly before the scheduled broadcast time extracted from the program list. Then, the audio data decoded by the MPEG2 decoding unit 26 is input to the MD recorder unit 33, and the MD recorder unit 33 is set to a recording standby (recording pause) state. The connection between the MPEG2 decoding unit 26 and the MD recorder unit 33 is an optical digital transmission path in consideration of the influence of external noise and the like. Then, transmission of the broadcast notification signal is monitored. When the music ID in the data stream matches the reserved music ID, the broadcast time information in the broadcast notification signal is obtained, and the recording pause state of the MD recorder unit 33 is released in synchronization with the start signal. The MD recorder unit 33 performs predetermined D / D conversion and records digital data conforming to the recording format of the MD on the MD 34. At this time, control signals such as track marks, recording date and time, or supplementary information such as music titles extracted from the program list are transferred to MD3.
4 in a predetermined recording area in a predetermined format. Permission of recording of the supplementary information and the recording date or selection of the supplementary information to be recorded can be appropriately set by the user's operation. Of course, the recorded supplementary information can be displayed later on a display panel or the like and edited. Then, when the acquired broadcast time elapses, the recording is ended in accordance with the end of the broadcast of the music. Here, when there is another reserved music, the recording is put into the reserved recording standby state again.

When the recording of the reserved music is completed, the central control unit 21 displays the music number recorded on the display panel of the main unit 20 of the receiving / reproducing apparatus in order to notify the user of the end. Of course, this notification information is transmitted from an externally connected TV.
It can also be displayed on a receiver or the like.

Further, the listening log of the music that has been listened to or recorded on the MD is written to the IC card 30 as needed.
This log is transmitted to the telephone line via the modem 35 at an appropriate communication opportunity. Upon receiving the transmitted log, the broadcaster calculates a listening fee for each song to be charged, and collects the listening fee according to a predetermined procedure.

In this embodiment, the broadcast time information of the music is inserted into the broadcast notification signal prior to the broadcast of the music, but this information is included in the music list, and this information is included together with the music ID when the reservation of the music is selected. Time information may be acquired.
Also, an end signal synchronized with the broadcast end timing of the music may be transmitted as a broadcast notification signal, and the recording may be terminated upon detection of the end signal.

The start signal may not be transmitted immediately before the broadcast of the music, but may be transmitted a predetermined time before the broadcast of the music.

[0029]

According to the first aspect of the present invention, in a music program in a digital multi-channel broadcasting system, even if sound other than music such as DJ is mixed and broadcast, only the music portion is reliably extracted and reserved and recorded. The present invention can provide a music program distribution method capable of performing the above. Further, it is possible to flexibly cope with a live broadcast or a shift or a change in the broadcast time of a song due to other reasons. Further, according to the second invention, the same effects as those of the first invention can be obtained for programs broadcast on other channels.

According to the third invention, the first or the second
According to the present invention, it is possible to achieve a receiving / reproducing apparatus capable of reliably recording a desired music piece in a reserved manner without performing any complicated operation on a distributed music program. Therefore, even when the user creates an original music collection according to his or her preference, it is possible to automatically edit the music without the need for complicated editing work such as dubbing each music from many CDs. In addition, since it can be recorded as a digital signal, the sound quality is high and there is no deterioration over time. This stimulates the consumer's willingness to purchase the receiving / reproducing device, which in turn contributes to the development of the digital multi-channel broadcasting industry.

According to the fourth aspect, when the same music is broadcasted a plurality of times, it is possible to automatically make a reservation recording at the earliest scheduled broadcast time. Therefore, it is possible to record and listen to the desired music more quickly. According to the fifth aspect, it is possible to search for a distributed program using the classification information in the program list as a key and make a reservation as it is.
Therefore, it is not necessary to check the entire program list.

According to the sixth aspect, it is possible to immediately confirm whether or not the program reserved by the user can be heard. Seventh
According to the invention, a listening fee can be charged to the user for each music piece that has been listened to. For this reason, the user does not need to pay an unnecessary listening fee, and the economic burden is reduced. According to the eighth aspect, the recorded reserved music piece becomes clear at a glance. For this reason, duplicate recording is prevented, and later editing work is facilitated. Furthermore, the operability at the time of music reproduction, such as searching and reproducing a desired music, is also improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a digital multi-channel broadcasting system according to an embodiment of the present invention.

FIG. 2 is a diagram showing music program data distributed in the embodiment and a multiplexed data structure thereof.

FIG. 3 is a system diagram showing a multiplexing method of a program distributed in the embodiment.

FIG. 4 is a configuration diagram of a receiving and reproducing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Broadcasting station 10 Communication satellite 20 Receiving / reproducing device 21 Central control device 26 MPEG2 decoding unit 29 IC card interface unit 30 IC card 33 MD recorder unit 34 MD 40 Telephone line 100 Data stream 101 Program list 102 Broadcast notification signal 200 Program data

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04H 1/08 H04M 11/08 H04M 11/08 H04N 5/44 Z H04N 5/44 5/445 Z 5/445

Claims (8)

[Claims] 1. A method for distributing a music program in a digital multi-channel broadcasting system, comprising the following requirements (1) to (3). (1) A data stream including a program list and a broadcast notification signal is multiplexed with program data obtained by compressing and encoding an audio signal broadcasted on the same channel and distributed. (2) The program list describes a song ID, a title, a scheduled broadcast time, and the like of a song scheduled to be broadcast in a music program scheduled to be broadcast on the channel during a predetermined period. (3) While the music program is being broadcast on the channel, the ID of the music is transmitted as the broadcast notification signal before the broadcasting of the music starts, and the music ID is successively transmitted before the broadcasting of the music starts. A start signal is transmitted as the notification signal. 2. The program list according to claim 1, wherein the music list, the title, the scheduled broadcast time, the broadcast channel, and the like of the musical program to be broadcast are also described in the program list for a musical program scheduled to be broadcast on a channel different from the channel. A music program distribution method characterized by being performed. 3. A receiving and reproducing apparatus for receiving and reproducing program data distributed by the method according to claim 1 or 2, wherein the program list is extracted from a received signal to obtain a list in a predetermined format. Means for displaying the desired music on the display, means for selecting the desired music from the list and making a reservation, and ID of the reserved music from the received signal.
Detecting the data of the reserved music from the program data in accordance with the start signal and recording the data in the storage, and reading the recorded music data from the storage. Receiving and reproducing device. 4. The storage unit according to claim 3, wherein when the reserved music is broadcast a plurality of times during the predetermined period, the music data of the reserved music is stored in the storage unit in accordance with a time at which the music is broadcast earliest. Receiving / reproducing apparatus, characterized in that the apparatus has means for recording the information. 5. The method according to claim 3, wherein the means for displaying the classification information included in the music list in the list, and the user can freely search for music distributed using the classification information as a key. A receiving and reproducing apparatus having means for selecting. 6. The recording apparatus according to claim 3, further comprising means for notifying a user of the completion of recording of the music data of the reserved music in the storage unit. Receiving and reproducing device. 7. The apparatus according to claim 3, further comprising means for recording the music data in the storage unit or reading the music data from the storage unit in conjunction with a charging system of a digital multi-channel broadcasting system. A receiving and reproducing apparatus characterized by the above-mentioned. 8. A means for extracting supplementary information such as a title and a singer's name of the reserved song from the program list according to any one of claims 3 to 7, further comprising: A receiving and reproducing apparatus comprising: means for recording in the storage unit; and means for reading the recorded supplementary information from the storage unit and displaying the contents in characters.