JP2002314912A - Broadcast recording playback device and broadcast recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcast recording playback device and a broadcast recording method for reproducing the stored content in a way that the user listens CM as the audience at least one time. SOLUTION: A CM identifier is recognized at a CM identifier acquiring unit 6, so the image signal of the CM and the image signal of the main body of program are discriminated and stored individually in a recording medium 3. At the playback, a playback permission determination unit 8 confirms the playback of the CM. When the playback of the main body of program is confirmed as permitted, the image signal of the main body of program is read out the recording medium 3 and reproduced on a display unit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of encoding and distributing video or audio content distributed through broadcasting or the Internet, and more particularly to a method of encoding content including a commercial message. Regarding the delivery method.

[0002]

2. Description of the Related Art A program transmitted from a broadcasting station includes not only the main part but also a commercial message (hereinafter, referred to as a CM) of a sponsor of the program. In order for the commercials used for this product promotion to be broadcast, the sponsor must
It is necessary to make a contract by paying a predetermined fee to the broadcasting station. Since the CM of the sponsor who has contracted is included in the program in this manner, the receiving terminal device can view the CM such as the advertisement of the product handled by the sponsor between the programs to be reproduced.

In recent years, since a broadcast signal transmitted from a broadcast station has been digitized, a broadcast recording / reproducing device functioning as a receiving terminal device has been required to transfer each program obtained from the received broadcast signal to a hard disk or the like. Recording can be performed using a randomly accessible recording medium. Therefore, in such a broadcast recording / reproducing apparatus, the recorded program can be reproduced simultaneously with the recording of the program without reproducing the program recorded like a video tape after it is completely recorded. Therefore, VTR (Video Tape Recorder), such as pausing a broadcast program
It is possible to realize a function that cannot be realized by the broadcast recording / reproducing apparatus as described above.

[0004]

However, in such a broadcast recording / playback apparatus, when a recorded program is played back, the CM portion may be fast-forwarded or skipped (hereinafter, referred to as special playback) to prevent the CM portion from being viewed. There is. Furthermore,
Recently, a broadcast recording / reproducing apparatus capable of skipping a CM portion during recording of a program has been realized. As described above, if the CM portion is not actually viewed by the viewer, the sponsor pays for the CM broadcast,
The value of M will decrease, and it will be a loss for the sponsor. Also, there is a problem that the viewer is troublesome because it is necessary to preview the CM every time the recorded program is reproduced, and the CM is viewed once.

[0005] In view of such a problem, the present invention provides a broadcast recording / reproducing apparatus and a broadcast recording method for reproducing recorded content so that a viewer can preview a CM at least once. The purpose is to:

[0006]

According to one aspect of the present invention, there is provided a broadcast recording / reproducing apparatus, comprising: a tuner for receiving a broadcast signal; and a video of a program obtained from the broadcast signal received by the tuner. In a broadcast recording / reproducing apparatus having a randomly accessible recording medium for recording a signal, a CM identifier acquiring section for recognizing a CM identifier for identifying a commercial message included in a program, and a CM identifier acquiring section for confirming the CM identifier. A recording control unit that discriminates the video signal of the commercial message and the video signal of the main program in accordance with the presence or absence of the CM identifier, and records the video signal on the recording medium, and the video signal recorded on the recording medium. When the program is reproduced, the reproduction of the main part of the program is prohibited until all of the commercial messages are reproduced. And it features.

In such a broadcast recording / reproducing apparatus, when recording a video signal of a program on a recording medium, the video signal of each commercial message is recorded together with a CM reproduction flag indicating whether or not the commercial message has been reproduced and displayed. Is done. Further, the video signal of the main program is recorded together with a reproduction prohibition flag for indicating permission of reproduction when all commercial messages are reproduced and displayed and the CM reproduction flag is set. At this time, the video signal of the main program and the video signal of the commercial message are physically separated and recorded on the recording medium, so that fragmentation of the recording medium can be prevented.

[0008] In such a broadcast recording / reproducing apparatus, as described in claim 2, there is provided a reproduction control section for controlling reading of a video signal stored in the recording medium, and the video recorded on the recording medium is provided. When a program based on a signal is reproduced, the reproduction control unit may prohibit reading of the video signal of the main program from the recording medium until all of the commercial messages are reproduced.

At this time, all the commercial messages are reproduced and displayed, the CM reproduction flag is set, the reproduction prohibition flag is cleared, and when the permission of reproduction is confirmed, the reproduction control unit records the commercial message on the recording medium. After the image signal of the main program is read, it is decoded by the decoder and reproduced and displayed on the display unit.

[0010] According to a third aspect of the present invention, the video signal of the main program is encrypted and recorded on the recording medium, and the decoder decodes the video signal read from the recording medium. When a program based on the video signal recorded on the recording medium is reproduced, the video signal of the main program is not decrypted until all the commercial messages are reproduced, and the video signal is decrypted by the decoder. May be prohibited.

At this time, all the commercial messages are reproduced and displayed, the CM reproduction flag is set, the reproduction prohibition flag is cleared, and if the permission of reproduction is confirmed, the image of the main program read by the recording medium is read. After the signal is decrypted, it is decrypted by the decoder and reproduced and displayed on the display unit.

According to a fourth aspect of the present invention, there is provided a broadcast recording / reproducing apparatus having a tuner for receiving a broadcast signal, and a randomly accessible recording medium for recording a video signal of a program obtained from the broadcast signal received by the tuner. In the recording / reproducing apparatus, a CM identifier acquiring unit for recognizing a CM identifier for identifying a commercial message included in a program, and a plurality of the commercial messages are provided according to the presence or absence of the CM identifier confirmed by the CM identifier acquiring unit. A recording control unit that distinguishes between the video signal and the video signal of the main part of the program and records the same on the recording medium, and divides and records the main part of the program in a plurality of areas in correspondence with each of the commercial messages. When a program based on a video signal recorded on the recording medium is reproduced, the reproduced commercial message Characterized in that the area corresponding to the di main program reproduction is permitted.

In such a broadcast recording / reproducing apparatus, when recording a video signal of a program on a recording medium, each commercial message indicates whether or not the program has been reproduced and displayed, and the main program in an area corresponding to each commercial message is displayed. The video signal of each commercial message is recorded together with a CM reproduction flag for permitting reproduction of the commercial message. Also, the video signal of the main program is recorded for each area divided corresponding to each commercial message. At this time,
The video signal of the main program and the video signal of the commercial message are physically separated and recorded on the recording medium, whereby fragmentation of the recording medium can be prevented.

According to a fifth aspect of the present invention, there is provided such a broadcast recording / reproducing apparatus, further comprising a reproduction control section for controlling reading of a video signal stored in the recording medium, wherein the video recorded on the recording medium is provided. When a program based on a signal is reproduced, the reproduction control unit may permit reading of the video signal of the main program from the recording medium in an area corresponding to the reproduced commercial message.

At this time, when the commercial message is reproduced and displayed and the CM reproduction flag is set, the image signal of the main part of the program designated by the set CM reproduction flag is read from the recording medium by the reproduction control unit. After being output, it is decoded by the decoder and reproduced and displayed on the display unit.

According to a sixth aspect of the present invention, there is provided a decoder for encrypting the video signal of the main program, recording the encrypted video signal on the recording medium, and decoding the video signal read from the recording medium. When a program based on the video signal recorded on the recording medium is reproduced, the video signal of the main program in an area corresponding to the reproduced commercial message is decrypted, and the Decryption may be permitted.

At this time, when the commercial message is reproduced and displayed and the CM reproduction flag is set, the image signal of the main program of the portion designated by the set CM reproduction flag is read out from the recording medium, and then the encrypted signal is read. The decoder is decoded, decoded by the decoder, and reproduced and displayed on the display unit.

[0018] As described in claim 7, for each of the above-mentioned broadcast recording / reproducing apparatuses, the remaining number or the remaining reproduction time of the commercial message is presented, and the remaining commercial to be viewed is presented to the user. The number of messages may be recognized.

According to the present invention, the reproduction of the commercial message is started by inputting a reproduction start request for each of one or a plurality of commercial messages. However, it is possible to always watch commercial messages.

According to a ninth aspect of the present invention, for each of one or more commercial messages, an input is made to confirm that the commercial message has been viewed within a specified time from the reproduction end time. If not, the reproduction of the commercial message is invalidated, and further,
The user can be made to always watch commercial messages.

According to a tenth aspect of the present invention, when the commercial message recorded on the recording medium is reproduced once, the reproduction of only the main program without the reproduction of the commercial message is permitted from the second time. It does not matter. At this time, by enabling the once reproduced commercial message to be deleted, the recording medium can be effectively used.

A broadcast recording / reproducing method according to claim 11 is
In a broadcast recording / reproducing method of recording a video signal of a program obtained from a broadcast signal received on a randomly accessible recording medium and reading and reproducing a video signal recorded on the recording medium, the video signal is recorded. At this time, a CM identifier for identifying a commercial message included in the program is confirmed, and depending on the presence or absence of the CM identifier confirmed by the CM identifier acquisition unit, the video signal of the commercial message and the video signal of the main program are compared. When the program recorded on the recording medium and the video signal recorded on the recording medium is reproduced, the reproduction of the main program is prohibited until all the commercial messages are reproduced.

In such a broadcast signal recording / reproducing method, as described in claim 12, when reproducing a program based on a video signal recorded on the recording medium, the program is executed until all of the commercial messages are reproduced. Reading of the video signal of the main program from the recording medium may be prohibited. Further, as described in claim 13, when the video signal of the main part of the program is encrypted and recorded on the recording medium, and when the program based on the video signal recorded on the recording medium is reproduced, all of the commercial messages are reproduced. Until the reproduction of the program, the decryption of the video signal may be prohibited without decrypting the video signal of the main program.

A broadcast recording / reproducing method according to a fourteenth aspect records a video signal of a program obtained from a broadcast signal received on a randomly accessible recording medium and a video signal recorded on the recording medium. In the broadcast recording / reproducing method of reading and reproducing a video signal, when recording the video signal, a CM identifier for identifying a commercial message included in the program is confirmed, and the presence / absence of the CM identifier confirmed by the CM identifier acquisition unit is determined. According to the above, while distinguishing the video signal of the plurality of commercial messages and the video signal of the main part of the program, the main part of the program is divided into a plurality of regions corresponding to each of the commercial messages, and the plurality of commercials A video signal of a message and a video signal of a main program are recorded on the recording medium, and the video signal recorded on the recording medium is recorded. When playing a program with, and permits the reproduction of the main program areas corresponding to the commercial message reproduced.

In this broadcast recording / reproducing method, as described in claim 15, when a program based on a video signal recorded on the recording medium is reproduced, the main program in an area corresponding to the reproduced commercial message is reproduced. The video signal may be read from the recording medium and reproduced. Further, as described in claim 16, the video signal of the main part of the program is encrypted and recorded on the recording medium, and the reproduced commercial is reproduced when reproducing a program based on the video signal recorded on the recording medium. The video signal of the main program in the area corresponding to the message may be decrypted, and the video signal may be decrypted and reproduced.

In each of the above broadcast recording and reproducing methods,
As described in claim 17, the number of remaining commercial messages or the remaining reproduction time may be presented.

Further, as described in claim 18, the reproduction of the commercial message may be started by inputting a reproduction start request for each of one or more commercial messages. As described in claim 19, for each of one or more of the commercial messages, when no input for confirming that the commercial message has been viewed is made within a specified time from the reproduction end time, The reproduction of the commercial message may be invalidated.

According to a twentieth aspect, when the commercial message recorded on the recording medium is reproduced once, the reproduction of only the main program without the reproduction of the commercial message is permitted from the second time. No problem.

[0029]

Embodiments of the present invention will be described below.

<Configuration of Broadcast Recording / Reproducing Apparatus> First, a configuration of a broadcast recording / reproducing apparatus common to the following first and second embodiments will be described with reference to the drawings. FIG. 1 is a block diagram showing the internal configuration of the broadcast recording / playback apparatus of the present invention. Although a broadcast signal originally includes a video signal, an audio signal, and a data signal, FIG. 1 is a block diagram showing a flow of a video signal among broadcast signals for simplification of description.

The broadcast recording / reproducing apparatus shown in FIG. 1 records an antenna 1 for receiving a digital broadcast, a tuner 2 for selecting a digital broadcast received by the antenna 1, and a video signal in the digital broadcast selected by the tuner 2. A randomly accessible recording medium 3, a decoder 4 for decoding the video signal read from the recording medium 3, and a display such as a display for reproducing the video of the program based on the video signal decoded by the decoder 4. A part 5.

The broadcast recording / reproducing apparatus shown in FIG. 1 includes a CM identifier acquiring unit 6 for confirming a CM identifier for identifying a CM part from a digital broadcast selected by the tuner 2;
Recording control unit 7 that controls writing of video signals to recording medium 3 according to the CM identifier confirmed by M identifier acquisition unit 6
And a reproduction permission determining unit 8 for confirming whether reproduction of the video signal of the main part of the video signal recorded on the recording medium 3 is permitted, and controlling reading of the video signal recorded on the recording medium 3. A reproduction control unit 9, a control unit 10 for controlling the tuner 2, the recording control unit 7, and the reproduction control unit 9, and an input unit 11 operated by a user to input various operations
And

As described above, when the broadcast recording / reproducing apparatus is configured, the input unit 11 is operated to input the channel of the program that the user wants to record, and the tuner 2 is controlled by the control unit 2, TS (Tran
The channel selection operation is performed by a frequency channel including (sport stream). Then, the TS of the program desired by the user is separated from the broadcast signal obtained by tuning. Further, a video signal and the like are separated from the TS and sent to the recording medium 3. Then, in accordance with an instruction from the recording control unit 7 controlled to perform an operation by the control unit 10, the tuner 2
Are stored in the recording medium 3.

When the user operates the input unit 11 to input a program to be reproduced by the user, the control unit 2 controls the reproduction control unit 4 to control a plurality of video signals recorded on the recording medium 3. Thus, the video signal of the program desired by the user is read out and sent to the decoder 4. In the decoder 4, for example, an MPEG (Moving Picture Expert Group)
p) Decoding is performed according to a method or the like. Then, when the decoded video signal is provided to the display unit 5, a video corresponding to the decoded video signal is displayed on the display unit 5.

The recording and reproduction of the video signal are performed as described above. The detailed operation will be described for each of the following embodiments. When the currently broadcast program is viewed, the video of the currently broadcast program is reproduced on the display unit 5 by performing the above-described recording operation and reproduction operation simultaneously.

<First Embodiment> A first embodiment of the present invention will be described with reference to FIG. FIG. 2 is a diagram illustrating a relationship between respective video signals recorded on a recording medium in the present embodiment.

1. Recording Operation First, a recording operation of the broadcast recording / reproducing apparatus of the present embodiment will be described. When the input unit 11 is operated to instruct the control unit 10 to record a program desired by the user, the control unit 10
Controls the tuner 2 so as to acquire the TS of the channel of the program desired by the user. At this time, the recording control unit 7 is controlled by the control unit 10 so as to control writing of the video signal to the recording medium 3 according to the CM identifier confirmed by the CM identifier acquisition unit 6.

When a video signal is supplied from the tuner 2 to the CM identifier acquisition unit 6, the header of the supplied video signal includes
It is checked whether a CM identifier exists. And C
When the M identifier acquisition unit 6 confirms the CM identifier, the video signal transmitted from the tuner 2 is determined to be a CM video signal, and the video signal is stored in the CM recording area 31 in the recording medium 3. The recording control unit 7 controls writing of the recording medium 3. When the CM identifier is not confirmed by the CM identifier acquisition unit 6, the video signal transmitted from the tuner 2 is determined to be the video signal of the main program, and the video signal is stored in the main program recording area 32 in the recording medium 3. As described above, the writing of the recording medium 3 is controlled by the recording control unit 7.

Now, it is assumed that the control unit 10 is instructed through the input unit 11 to record a program broadcast between times t1a to t6 as shown in FIG. In FIG. 3, CM1 is set between times t1a and t2a, and CM is set between times t2a and t2b.
2 at time t3a-t3b, CM3 at time t4a-t
4b, CM5 is broadcast from time t5a to t5b, and CM5 is broadcast from time t1b to t2a, t2b to t3a,
It is assumed that the main program is broadcast during each of t3b to t4a, t4b to t5a, and t5b to t6.

When the recording of the program is started at time t1a, first, the video signal of the CM 1 is transmitted from the tuner 2 to the recording medium 3 and the CM identifier acquisition unit 6. Therefore, C
Since the M identifier acquisition unit 6 recognizes the CM identifier c1 of the CM 1, the data recording area 3 of the CM recording area 31
The video signal of CM1 is written to 4a. At this time, corresponding to the data recording area 34a, the CM playback flag 3
3a is provided. Then, time t1b is reached, and CM1
Is completed, the video signal of the main program is transmitted to the recording medium 3 and C
It is sent to the M identifier acquisition unit 6 and the CM identifier is not confirmed.

Thus, the video signal of the main part of the program at the time t1b to t2a is written to the data recording area 36a of the main part recording area 32. Next, at time t2a, the video signal of CM2 is sent to the recording medium 3 and the CM identifier acquisition unit 6, and the CM identifier c2 of CM2 is recognized, and the time t2b
Until the data recording area 34b of the CM recording area 31
The video signal of CM2 is written to the. At this time, corresponding to the data recording area 34b, the CM reproduction flag 33b
Is provided.

When the CM identifier is no longer confirmed, the data recording area 36b, which is an area following the data recording area 36a of the main program recording area 32, stores the time t2b to t3a.
Is written. By performing such an operation until time t6, the CM identifier c3
T3a to t3b and t4a to t4 when?
b, t5a to t5b, the video signals of CM3, CM4, and CM5 are written to the data recording areas 34c, 34d, and 34e of the CM recording area 31, respectively. Note that CM reproduction flags 33c to 33e are provided corresponding to the data recording areas 34c to 34e.

Time t3b during which the CM identifier is not confirmed
The video signals of the main part of the program at t4a, t4b to t5a, and t5b to t6 are written to the data recording areas 36c, 36d, and 36e of the main part recording area 32. still,
The main part recording area 32 corresponds to the data recording area 36 in which the image signal of the main part of the program is recorded.
5 are provided.

As described above, when the video signals of CM1 to CM5 are stored in the CM recording area 31 and the video signal of the main part of the program is stored in the main part recording area 32, respectively, the CM reproduction flag 3
3a to 33e are set to 0, so that the state is not set until each of CM1 to CM5 is reproduced, and the reproduction prohibition flag 35 is set, and the reproduction of the video signal of the main program is prohibited. .

2. Reproducing Operation Next, the reproducing operation of the broadcast recording / reproducing apparatus which performs the recording operation as described above will be described. When the input unit 11 is operated to instruct the control unit 10 to reproduce the program desired by the user, the recording medium 3 of the video signal of the program desired by the user is provided.
The reproduction control unit 9 is controlled by the control unit 10 so as to perform read control from the.

At this time, the reproduction prohibition flag 35 is set, and the reproduction of the main program is prohibited. Therefore, a reproduction permission determining unit that determines whether or not the main program video signal can be read from the recording medium 3 so that reading of the main program video signal stored in the main program recording area 32 from the recording medium 3 is prohibited. 8, the reproduction control unit 9
Is controlled.

Therefore, first, the reproduction control unit 9 controls so that the video signals of a plurality of CMs recorded in the CM recording area 31 where the reproduction is not prohibited are read from the recording medium 3. Then, the read video signal of each CM is decoded by the decoder 4, and the video of each CM is reproduced and displayed on the display unit 5. At this time, for each CM whose playback has ended,
The CM reproduction flag 33 (corresponding to the CM reproduction flags 33a to 33e in FIG. 2) corresponding to the data recording area 34 (corresponding to the data recording areas 34a to 34e in FIG. 2) in which the CM is stored is set to 1. , A set state indicating the end of reproduction.

When all CMs have been reproduced and the CM reproduction flags 33 corresponding to all the CMs are set to 1 and set, the reproduction display flag 35 is cleared and reproduction of the main program is permitted. You. Therefore, the reproduction display flag 35
Has been cleared, the reproduction permission determination unit 8 recognizes that the reproduction control unit 9 performs reading control of the video signal of the main program stored in the data recording area 36 in the main program recording area 32. To instruct. Therefore, the recording medium 3
The video signal of the main part of the program read out is decoded by the decoder 4, and the main part of the program is reproduced and displayed on the display unit 5.

When an instruction to reproduce the program as shown in FIG. 3 recorded on the recording medium 3 is issued, first, the reproduction control unit 9 is controlled by the control unit 10 to read the CM 1 stored in the data recording area 34a. It is instructed to perform video signal read control. Then, the video signal of the CM 1 is read from the recording medium 3, and the CM 1 is reproduced and displayed on the display unit 5. When the reproduction and display are completed, the CM reproduction flag 33a is set to 1 and set.

Next, the reproduction controller 9 sets the data recording area 34
An instruction is given to perform read control of the video signal of CM2 stored in b. CM2 is reproduced and displayed on the display unit 5. When the reproduction and display are completed, the CM reproduction flag 33b is set to 1 and set. Thereafter, the data recording areas 34c-3c
The video signals of CM3 to CM5 stored in 4e are sequentially read out, and when the reproduction and display of CM3 to CM5 are sequentially completed, the CM reproduction flags 33c to 33e are arranged in the order of the completed CMs.
Is set to 1 and set.

In this way, when all the CMs CM1 to CM5 are reproduced and displayed and the CM reproduction flags 33a to 33e are all set, the reproduction prohibition flag 35 is cleared. Therefore, the reproduction permission determining unit 8 confirming the reproduction prohibition flag 35 causes the data recording area 36 of the main recording area 32 to be recorded.
It is determined that the video signal of the main program stored in the program can be read. Then, the reproduction permission determining unit 8 instructs the reproduction control unit 9 to read the video signal of the main program stored in the data recording area 36.

Therefore, first, the video signal recorded in the data recording area 36a is read, and the time t1b to t2a
Is reproduced and displayed on the display unit 5. When the reproduction and display of the main part of the program from time t1b to t2a are completed, the video signal recorded in the data recording area 36b is read out, and the main part of the program from time t2b to t3a is read at time t1b.
Subsequent to the main part of the program from t2a to t2a, it is reproduced and displayed on the display unit 5. After that, the video signals recorded in the data recording areas 36c to 36e are continuously read out, and the time t3b to t4
The main program of a, t4b to t5a and t5b to t6 is continuously reproduced and displayed.

As described above, in the present embodiment, the reproduction and display of the main program can be performed only when all the CMs recorded together with the main program are reproduced and displayed. When the CM reproduction flag 33 for the recorded CM video signal is set, the set CM reproduction flag 33 is set.
Is stored in the CM recording area 31 while being set. Also, with regard to the reproduction prohibition flag 35, when all the CMs are reproduced and displayed and cleared, the CMs are stored in the program recording area 36 as they are cleared.

<Second Embodiment> A second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a diagram illustrating a relationship between respective video signals recorded on a recording medium in the present embodiment. In this embodiment, the same operations as those in the first embodiment will be briefly described, and the details thereof will be omitted.

1. Recording Operation First, a recording operation of the broadcast recording / reproducing apparatus of the present embodiment will be described. When the input unit 11 is operated to instruct the control unit 10 to record a user-desired program, the control unit 10 transmits the TS of the user-desired program similarly to the first embodiment.
Control the tuner 2 so as to obtain
In accordance with the CM identifier confirmed by the M identifier acquisition unit 6, the recording control unit 7 is controlled so as to control writing of the video signal to the recording medium 3.

When the CM identifier is confirmed by the CM identifier acquisition unit 6, the CM recording area 3 in the recording medium 3 is read.
1 stores a video signal.
When the M identifier is not confirmed, the video signal is stored in the main recording area 32a in the recording medium 3. When the video signal is recorded on the recording medium 3 as described above, the main program whose reproduction is permitted is divided for each CM recorded in the CM recording area 31. Then, the video signal representing each part of the main part of the divided program is recorded in the main part recording area 32a with the area divided for each part.

Now, the time t1a to t1 as shown in FIG.
Input section 11 so as to record a program broadcast during
It is assumed that the instruction is given to the control unit 10 through. Time t1
When the recording of the program is started, the video signal of the CM 1 is transmitted from the tuner 2 to the recording medium 3 and the CM identifier acquisition unit 6. Accordingly, since the CM identifier c1 of the CM1 is recognized in the CM identifier acquisition unit 6, the CM
A reproduction flag 33a is provided, and the CM recording area 3
The video signal of CM1 is written to the 1 data recording area 34a. When time t1b comes and CM1 ends, the video signal of the main part of the program is sent to the recording medium 3 and the CM identifier acquisition unit 6, and the CM identifier is not confirmed.

Thus, the video signal of the main program at time t1b to t2a is written to the data recording area 36a of the main program recording area 32a. Next, at time t2a to t2b, C
The video signal of M2 is sent to the recording medium 3 and the CM identifier acquisition unit 6, and the CM identifier c2 of CM2 is recognized, and
A reproduction flag 33b is provided, and a video signal of CM2 is written in the data recording area 34b of the CM recording area 31.

When the CM identifier is no longer confirmed, the data recording area 36b, which is an area following the data recording area 36a of the main program recording area 32a, stores the time t2b to t3.
The video signal of the main program of a is written. Such an operation is performed until time t6, and times t3a to t3b, t4a to t4b, and t5a at which the CM identifiers c3 to c5 are confirmed.
From to t5b, the CM reproduction flags 33c to 33e are provided, and the video signals of the CM3, CM4, and CM5 are written to the data recording areas 34c, 34d, and 34e. In addition, the time t3b when the CM identifier is not confirmed
The video signals of the main program at t4a, t4b to t5a, and t5b to t6 are written to the data recording areas 36c, 36d, and 36e of the main program recording area 32a.

As described above, when the video signals of CM1 to CM5 are stored in the CM recording area 31 and the video signal of the main part of the program is stored in the main part recording area 32a, the CM reproduction flags 33a to 33e are set to 0, It is assumed that CM1 to CM5 are not set until they are reproduced. The CM reproduction flags 33a to 33e determine whether or not the main program can be reproduced by the video signals of the main program stored in the data recording areas 36a to 36e.

[0061] 2. Reproducing Operation Next, the reproducing operation of the broadcast recording / reproducing apparatus that performs the recording operation as described above will be described. When the input unit 11 is operated to instruct the control unit 10 to reproduce the program desired by the user, the recording medium 3 of the video signal of the program desired by the user is provided.
The reproduction control unit 9 is controlled by the control unit 10 so as to perform read control from the.

At this time, the CM reproduction flags 33 for all CMs are 0, not set, and the main program recording area 3
Reproduction of the main program stored in the entire area 2a is prohibited. Therefore, the CM reproduction flag 33 (corresponding to the CM reproduction flags 33a to 33e in FIG. 4) is set so that the reading of the video signal of the main program stored in the entire main program recording area 32a from the recording medium 3 is prohibited. The reproduction control unit 9 is controlled by the reproduction permission determination unit 8 that determines whether the video signal of the main program can be read.

Therefore, first, the reproduction control unit 9 controls so that the video signals of a plurality of CMs recorded in the CM recording area 31 where the reproduction is not prohibited are read from the recording medium 3. Then, the read video signal of each CM is decoded by the decoder 4, and the video of each CM is reproduced and displayed on the display unit 5. At this time, the display unit 5 displays the CMs, and also displays the number of remaining CMs to be reproduced, the remaining reproduction time of the CMs, and the reproducible portion of the main program corresponding thereto, as shown in FIG. .

At this time, for each CM whose reproduction has been completed,
The CM reproduction flag 33 corresponding to the data recording area 34 (corresponding to the data recording areas 34a to 34e in FIG. 3) in which the CM is stored is set to 1, and a set state indicating the end of reproduction is set. Then, the set CM playback flag 33 is set.
Is confirmed by the reproduction permission determination unit, the reproduction and display of the main part of the program in the part where the reproduction is prohibited by the CM reproduction flag 33 is permitted. Therefore, each time the CM ends reproduction, the number of remaining CMs and the remaining reproduction time of the CM decrease and the reproducible portion of the main program increases.

When the user operates the input unit 11 to request the reproduction of the main program, the control unit 10
The reproduction control unit 9 is controlled so as to perform reading control of the main part of the program which is a reproducible part. Therefore, the video signal of the main program stored in the main program recording area 32a for the CM reproduction flag 33 confirmed to be set by the reproduction permission determination unit 8 is read. Therefore, the recording medium 3
The video signal of the main part of the program read out is decoded by the decoder 4, and the main part of the program is reproduced and displayed on the display unit 5.

When the program as shown in FIG. 3 recorded on the recording medium 3 is instructed to be reproduced, first, the control unit 10 causes the reproduction control unit 9 to execute the reproduction of the CM 1 stored in the data recording area 34a. It is instructed to perform video signal read control. Then, the video signal of the CM 1 is read from the recording medium 3, and the CM 1 is reproduced and displayed on the display unit 5. When the reproduction and display are completed, the CM reproduction flag 33a is set to 1 and set.

Therefore, according to the CM reproduction flag 33a,
The reproduction permission determining unit 8 confirms that the main part of the program based on the image data stored in the data recording area 36a for which the reproduction is permitted can be reproduced. At this time, when the control section 10 instructs the reproduction of the main program, the image data stored in the data recording area 36a is read out, decoded by the decoder 4, and then reproduced and displayed on the display section 5. . When the reproduction of the main program by the image data stored in the data recording area 36a is completed, the data recording area 36a
Since the reproduction of the main program by the image data stored in b to 36e is not permitted, the reproduction of the main program is ended.

When the CM 1 is displayed after the CM 1 has been reproduced and displayed, the reproduction controller 9 is instructed to control the reading of the CM 2 video signal stored in the data recording area 34b. , CM2 are reproduced and displayed on the display unit 5, and when the reproduction display ends, the CM reproduction flag 33b is set to 1 and set. Therefore, the reproduction permission determining unit 8 confirms that the main program of the program based on the image data stored in the data recording area 36b in which the reproduction is permitted can be reproduced by the CM reproduction flag 33b.

At this time, when the reproduction of the main program is instructed to the control unit 10, first, the image data stored in the data recording area 36 a is read out, decoded by the decoder 4, and then displayed on the display unit 5. Is displayed. When the reproduction of the main program by the image data stored in the data recording area 36a is completed, the image data stored in the data recording area 36b is read out, decoded by the decoder 4, and then displayed. It is reproduced and displayed by the unit 5. When the reproduction of the main program by the image data stored in the data recording area 36b is completed, the reproduction of the main program by the image data stored in the data recording areas 36c to 36e is not permitted. Is terminated.

As described above, when CM1 is reproduced and displayed,
Time t1b permitted by CM playback flag 33a
The main program at t2a is reproduced and displayed on the display unit 5. Also, C
When M1 and CM2 are reproduced and displayed, the CM reproduction flag 33 is displayed.
times t1b to t2a, t permitted by a, 33b
The main program of 2b to t3a is reproduced and displayed on the display unit 5.
When the CMs 1 to 3 are reproduced and displayed, the times t1b to t2 permitted by the CM reproduction flags 33a to 33c.
The main program of a, t2b to t3a, and t3b to t4a is reproduced and displayed on the display unit 5.

When CM1 to CM4 are reproduced and displayed,
Times t1b to t2a, t2b to t3a, t3b to t4a, t permitted by the CM reproduction flags 33a to 33d
The main program of 4b to t5a is reproduced and displayed on the display unit 5.
When CM1 to CM5 are reproduced and displayed, the time t1b to t2 permitted by the CM reproduction flags 33a to 33e.
a, t2b to t3a, t3b to t4a, t4b to t5
a, the main program from t4b to t6 is reproduced and displayed on the display unit 5.

As described above, in this embodiment, the time of the main program that can be reproduced is determined according to the number of reproduced CMs. Then, when the CM reproduction flag 33 for the recorded video signal of the CM is set, the set CM reproduction flag 33 is stored in the CM recording area 31 as it is set. Regarding the area division of the main program that can be reproduced according to each CM,
As in the present embodiment, the main program broadcast between CMs may be used, or the entire main program may be divided again according to the number of CMs.

In the first and second embodiments described above, the input unit 11 is operated so as to reproduce each CM, thereby confirming that each CM has been viewed by the user. can do. That is, in the example of FIG. 3, after the reproduction is started, when the reproduction of the CM 1 is completed,
In order to start the reproduction of CM2, the user operates the input unit 11
Is not operated, the reproduction of CM2 is not started. or,
At this time, each CM may be arbitrarily selected by the user and reproduced.

Further, the input unit 11 may be operated so as to confirm that the user has watched each time the reproduction is completed for each CM. At this time, when the reproduction of each CM ends, if the input unit 11 does not operate so as to confirm that the user has viewed the CM within a specified time, the viewing of the CM whose reproduction has ended is invalidated, and the CM is terminated. The reproduction flag 33 is not set.
By doing so, the user surely views the CM. At this time, the viewing confirmation may not be performed for every CM but may be performed for a plurality of CMs.

When the CM recorded on the recording medium 3 is reproduced for the first time, special reproduction such as skip and fast-forward is prohibited, and after the CM flag 33 is set, special reproduction is enabled. You can do it.

Further, when recording while reproducing, by operating the input unit 11 so as to confirm the viewing of the CM at the time of recording, the CM reproduction flag 33 is set, and the recorded program is reproduced. When reproducing again, it is possible to prevent the user from requesting to view the CM from the first reproduction. At this time, the CM may not be recorded. Thus, when there is no CM record,
The main program is reproduced and displayed without restriction.

In the first and second embodiments, for example, when the main program is encrypted and recorded for the purpose of copyright protection or the like, when the CM is viewed, the encryption is decrypted. , Playback can be allowed. At this time, when the CM is not viewed, the video signal of the main program is read from the recording medium 3 but is not decoded by the decoder 4 because it is encrypted. Therefore, the encryption is decrypted and read out only after the CM is viewed, so that the decoder 4 can decrypt the data and the main program is reproduced and displayed.

After the CM reproduction flag 33 is set, the CM may be deleted from the recording medium 3. At this time, in the first embodiment, the reproduction prohibition flags 35 are cleared by setting the CM reproduction flags 33 of all the CMs recorded on the recording medium 3, so that all the CMs are reproduced after the reproduction. May not be stored in the recording medium 3. In the second embodiment, once the CM playback flag 33 is set, the fact that the image signal of the main program in the area corresponding to the CM reproduction flag 33 can be read may be written in the main program recording area 32. Therefore, based on the information on whether or not the main program can be read, which is written in the main program recording area 32, the reproduction permission determination unit 8 confirms whether or not the main program in each area can be reproduced.

In the first and second embodiments, the area for recording the CM and the main part of the program on the recording medium 3 is set so as to be physically separated from each other. But by managing addresses,
They may be logically separated. Furthermore, the first
In the embodiment, when there is a reproduction display of the CM, the second
By performing the display as shown in FIG.
The user may be made to recognize the number of remaining CMs and the remaining reproduction time of the CMs.

[0080]

According to the present invention, since the main program is reproduced only after the commercial message is reproduced, the commercial message can always be viewed at least once. In addition, for each commercial message, an input for starting reproduction or an input for confirming that the commercial message has been received is performed, so that the commercial message can be more reliably viewed by the user. .

Further, once the commercial message is reproduced, the reproduction of the main program is permitted from the second time onward without reproduction of the commercial message. Therefore, for the user, the reproduction of the main program is not hindered by the commercial message. Playback can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the internal configuration of a broadcast recording / playback apparatus according to the present invention.

FIG. 2 is a diagram illustrating a recording method on a recording medium according to the first embodiment.

FIG. 3 is an example of a program recorded in a broadcast recording / playback apparatus.

FIG. 4 is a diagram illustrating a recording method on a recording medium according to a second embodiment.

FIG. 5 is a diagram showing a display example of the remaining time and the number of remaining CM reproductions.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Tuner 3 Recording medium 4 Decoder 5 Display unit 6 CM identifier acquisition unit 7 Recording control unit 8 Reproduction permission judgment unit 9 Reproduction control unit 10 Control unit 11 Input unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C052 AA01 DD10 5C053 FA23 LA06 5D044 AB05 AB07 BC01 CC05 DE49 DE53 EF05 FG18 GK12 GK17 5D110 AA13 AA27 AA29 CA52 CB07 DA04 DA11 DB03 DE01

Claims (20)

[Claims] 1. A broadcast recording / reproducing apparatus having a tuner for receiving a broadcast signal and a randomly accessible recording medium for recording a video signal of a program obtained from the broadcast signal received by the tuner, wherein the broadcast recording / reproducing apparatus includes a tuner. A CM identifier acquisition unit for recognizing a CM identifier for identifying a commercial message; and a video signal of the commercial message and a video signal of the main program are distinguished according to the presence or absence of the CM identifier confirmed by the CM identifier acquisition unit. Separately, a recording control unit that records on the recording medium, and, when a program based on a video signal recorded on the recording medium is reproduced, the main program is reproduced until all of the commercial messages are reproduced. Broadcast recording / reproducing apparatus, which is prohibited from being performed. 2. A reproduction control unit for controlling reading of a video signal stored in the recording medium, wherein when a program based on the video signal recorded on the recording medium is reproduced, all of the commercial messages are reproduced. 2. The broadcast recording / reproducing apparatus according to claim 1, wherein reading of the video signal of the main program from the recording medium is prohibited by the reproduction control unit until the time comes. 3. A video signal of the main part of the program is encrypted and recorded on the recording medium, and a decoder for decoding a video signal read from the recording medium is recorded on the recording medium. When a program based on the reproduced video signal is reproduced, the video signal of the main program is not decrypted until all the commercial messages are reproduced, and the decryption by the decoder is prohibited. The broadcast recording / reproducing apparatus according to claim 1. 4. A broadcast recording / reproducing apparatus having a tuner for receiving a broadcast signal and a randomly accessible recording medium for recording a video signal of a program obtained from the broadcast signal received by the tuner, wherein the broadcast recording / reproducing apparatus includes the tuner. A CM identifier acquiring unit for recognizing a CM identifier for identifying a commercial message; and a video signal of the plurality of commercial messages and a video signal of a main program according to the presence or absence of the CM identifier confirmed by the CM identifier acquiring unit. And a recording control unit that records the program main part in a plurality of areas in association with each of the commercial messages, and records the program on the recording medium. When a program based on the reproduced video signal is reproduced, the main program in an area corresponding to the reproduced commercial message Broadcast recording and reproduction apparatus, characterized in that the reproduction is permitted. 5. A reproduction control unit for controlling reading of a video signal stored in the recording medium, wherein the reproduction control unit reproduces a program based on the video signal recorded on the recording medium. 5. The broadcast recording / reproducing apparatus according to claim 4, wherein reading of the video signal of the main part of the program in an area corresponding to the commercial message is permitted from the recording medium. 6. A video signal of the main part of the program is encrypted and recorded on the recording medium, and a decoder for decoding a video signal read from the recording medium is recorded on the recording medium. When a program based on the reproduced video signal is reproduced, the encryption of the video signal of the main part of the program in an area corresponding to the reproduced commercial message is decrypted, and decryption by the decoder is permitted. The broadcast recording / reproducing apparatus according to claim 4, wherein 7. The broadcast recording / reproducing apparatus according to claim 1, wherein the number of remaining commercial messages or the remaining reproduction time is presented. 8. A reproduction start request is input for each of one or more commercial messages,
The broadcast recording / reproducing apparatus according to claim 1, wherein reproduction of the commercial message is started. 9. When one or a plurality of the commercial messages are not input for confirming that they have been viewed within a specified time from the reproduction end time, the reproduction of the commercial messages is performed. 9. The broadcast recording / playback apparatus according to claim 1, wherein is invalidated. 10. The method according to claim 1, wherein when the commercial message recorded on the recording medium is reproduced once, reproduction of only the main program is permitted without reproducing the commercial message from a second time. Claim 9
A broadcast recording / reproducing apparatus according to any one of the above. 11. A broadcast recording and reproducing method for recording a video signal of a program obtained from a broadcast signal received on a randomly accessible recording medium and reading and reproducing the video signal recorded on the recording medium, When recording a video signal, a CM identifier for identifying a commercial message included in the program is confirmed, and the video signal of the commercial message and the program are determined according to the presence or absence of the CM identifier confirmed by the CM identifier acquisition unit. When the video signal of the main part is distinguished from the video signal and recorded on the recording medium, and the program based on the video signal recorded on the recording medium is reproduced, the reproduction of the main part of the program is prohibited until all the commercial messages are reproduced. A broadcast recording / reproducing method characterized by the above-mentioned. 12. When reproducing a program based on a video signal recorded on the recording medium, prohibiting reading of the video signal of the main program from the recording medium until all of the commercial messages are reproduced. The broadcast recording / reproducing method according to claim 11, wherein: 13. Encrypting the video signal of the main program and recording the encrypted video signal on the recording medium, and when reproducing a program based on the video signal recorded on the recording medium, the program until the entire commercial message is reproduced. 2. The decryption of said video signal without decrypting the video signal of the main program is prohibited.
2. The broadcast recording and reproducing method according to 1. 14. A broadcast recording / reproducing method for recording a video signal of a program obtained from a broadcast signal received on a randomly accessible recording medium and reading and reproducing the video signal recorded on the recording medium. When recording a video signal, a CM identifier for identifying a commercial message included in a program is confirmed, and a plurality of video signals of the commercial message are determined according to the presence or absence of the CM identifier confirmed by the CM identifier acquisition unit. And the video signal of the main part of the program, and the main part of the program is divided into a plurality of regions in correspondence with each of the commercial messages, and the video signal of the plurality of commercial messages and the video signal of the main part of the program are separated. When the program recorded on the recording medium is reproduced by the video signal recorded on the recording medium, Broadcast recording and reproducing method and permits the reproduction of the main program area corresponding to the Marshall message. 15. When reproducing a program based on a video signal recorded on the recording medium, reproduction is performed by permitting reading of the video signal of the main program from an area corresponding to the reproduced commercial message from the recording medium. The broadcast recording / reproducing method according to claim 14, wherein: 16. The video signal of the main program is encrypted and recorded on the recording medium, and when a program based on the video signal recorded on the recording medium is reproduced, an area corresponding to the reproduced commercial message is reproduced. 15. The broadcast recording / reproducing method according to claim 14, wherein the video signal of the main program is decrypted, and the video signal is decrypted and reproduced. 17. The broadcast recording / reproducing apparatus according to claim 11, wherein the number of remaining commercial messages or the remaining reproduction time is presented. 18. The method according to claim 11, wherein the reproduction of the commercial message is started by inputting a reproduction start request for each of one or a plurality of commercial messages. Broadcast recording and playback method. 19. For each of one or more commercial messages, when no input for confirming that the commercial message has been viewed is made within a specified time from the reproduction end time, reproduction of the commercial message is performed. 19. The broadcast recording / reproducing method according to claim 11, wherein? 20. The reproduction method according to claim 11, wherein when the commercial message recorded on the recording medium is reproduced once, reproduction of only the main program is permitted without reproducing the commercial message from a second time. Item 1
10. The broadcast recording / reproducing method according to any one of 9.