JP2001266482A - Device and method for recording and reproducing information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that the system of free of change broadcasting can not be maintained since viewer does not watch a CM part when the CM part of video data recorded on a disk recording medium is skipped. SOLUTION: This device is provided with a CM judging part 102, a disk recording part 102 for adding and recording CM identification information showing the CM part and a reproducing and erasing control part 105 for recording whether the CM part is rightly reproduced at the time of reproducing or not and disabling the erasure of a recorded program at the time of erasure when the CM part is not rightly reproduced. Thus, when the viewer skips the CM part during program reproducing, the program can not be erased from the disk recording part, namely, the viewer can view the CM part even later without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to an information recording / reproducing apparatus and a method for recording / reproducing program information comprising at least one of digital video and digital audio on a disk recording medium which can be accessed randomly, and a CM included in the program information. An information recording / reproducing apparatus, which detects a part and allows a viewer to view the CM part without fail.
And an information recording / reproducing method.

[0002]

2. Description of the Related Art Conventionally, as a method for preventing a commercial (CM) skip or the like, Japanese Patent Application Laid-Open No. H11-187310 has been proposed.
There is known a method of making it impossible to detect the CM position, such as that described in Japanese Patent Application Laid-Open Publication No. H11-209,036. Hereinafter, the configuration and operation of this conventional technique will be described with reference to FIG. According to this conventional technology, in a terrestrial television broadcasting station composed of a main station and a branch station, when a broadcast program is reorganized at a branch station and sent to a viewer, information on an in-point and an out-point of a replacement part of program material is transmitted. By deleting the included cue information and sending it out, it is possible to prevent the viewer from performing commercial skipping by referring to the cue information.

[0003] In other words, the cue information detection circuit 2003 converts the digital broadcast stream transmitted from the head office to the branch office from the C station.
Detecting the queue information indicating the position of the M portion, the system controller 2004 sends a queue information deletion signal to the queue information deletion block 2005 based on the cue signal, and sends a CM insertion control signal to the CM insertion device 2001. send. CM insertion device 2
001 selects and switches between the program transmitted from the main station and the CM from the CM server 2002 in response to the CM insertion control signal, and the queue information deletion block 2005
Send to The queue information deletion block 2005 deletes the queue information from the CM insertion device 2001 and sends it.

[0004] Thus, in the video recording / reproducing apparatus of the viewer, it is possible to prevent the commercial skip function of skipping the commercial part and recording using the cue information as a clue.

[0005]

However, even if the recording can be performed without skipping the commercial part by the method described above, the viewer tries to save the reproduction time by fast-forwarding the commercial part during reproduction. On a tape medium typified by a VCR, which is widely used as a recording medium of a video recording / reproducing apparatus used at home, a CM portion is seen even in fast forward reproduction.

On the other hand, recently, instead of a tape medium,
There is a demand for disk media such as magnetic disks and magneto-optical disks that can be randomly accessed.However, in a disk storage medium having random access, not only ultra-high-speed fast-forward but also a skip operation can be performed. If the CM portion of the recorded video data is skipped, the viewer will no longer see the CM portion.

[0007] By the way, free television broadcasting is operated by providing a commercial for advertising a predetermined product to a viewer and receiving compensation from a provider of the product to be advertised. Therefore, when video data is recorded on a disk medium, there is a problem that the advertisement of the product intended by the CM cannot be reliably performed, and the system of free broadcasting itself cannot be maintained. Also, since the cue signal may be inserted even when the program is switched, there is a possibility that the detection of the CM portion may be erroneously performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and accurately detects a CM portion of video data recorded on a randomly accessible disk recording medium, and always provides a viewer with a CM. It is an object of the present invention to provide an information recording / reproducing apparatus and an information recording / reproducing method capable of allowing a part to be viewed.

[0009]

In order to solve the above-mentioned problems, the invention according to the first aspect of the present invention provides a method of recording media information including at least one of digital video and digital audio on a randomly accessible recording medium. In an information recording / reproducing apparatus for recording / reproducing, CM detecting means for detecting a commercial (hereinafter referred to as CM) portion in media information to be recorded, and CM identification indicating that the detected CM portion is a CM portion. Recording means for adding information and recording media information including the CM portion on a recording medium;
Reproducing means for reproducing a recording medium on which the media information is recorded, and a CM for recording whether or not a CM portion in the media information has been correctly reproduced at the time of reproducing the media information
Reproduction / recording means; erasing means for erasing the media information recorded on the recording medium; and when erasing the media information recorded on the recording medium, if the CM section is not correctly reproduced, the CM section is deleted. And erasing control means for preventing erasing of the media information.

[0010] The invention described in claim 2 of the present invention provides:
In an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, a CM detecting means for detecting a CM portion in the media information to be recorded; Recording means for adding media identification information indicating a CM portion to the CM portion and recording media information including the CM portion on a recording medium, and reproducing means for reproducing the recording medium on which the media information is recorded CM reproduction recording means for recording whether or not a CM portion in the media information has been correctly reproduced when reproducing the media information; erasing means for erasing the media information recorded on the recording medium; At the time of erasing the media information recorded on the medium, if the CM portion is not correctly reproduced, the CM portion And erasing control means for not be erased only, characterized by comprising a.

Further, the invention according to claim 3 of the present invention provides:
In an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, a CM detecting means for detecting a CM portion in the media information to be recorded; Recording means for connecting the main parts in the media information to each other, connecting the CM parts to each other and recording on the recording medium, and continuously reproducing only the main part of the recording medium on which the media information is recorded, and C
A reproducing unit that enables continuous reproduction of only the M portion; a CM reproduction recording unit that records whether or not the CM portion in the media information has been correctly reproduced during reproduction of the media information; Erasing means for erasing the media information; and erasing control means for erasing the media information including the CM portion if the CM portion is not correctly reproduced when erasing the media information recorded on the recording medium. , Is provided.

[0012] The invention described in claim 4 of the present invention provides:
In an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, a CM detecting means for detecting a CM portion in the media information to be recorded; Recording means for connecting and recording the main parts in the media information, and connecting and recording the CM parts together; continuous reproduction of only the main part of the recording medium on which the media information is recorded and reproduction of only the CM parts Reproducing means for enabling continuous reproduction; CM reproducing and recording means for recording whether or not a CM portion in the media information has been correctly reproduced when reproducing the media information; and reproducing the media information recorded on the recording medium. Erasing means for erasing, and when erasing the media information recorded on the recording medium, correct the CM portion. The CM if it is not played
And erasing control means for preventing erasing of only a part.

Further, the invention according to claim 5 of the present invention provides:
In an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible disk recording medium, C for detecting a CM portion in the media information to be recorded
M detecting means, recording means for recording media information to be recorded on the recording medium, reproducing means for reproducing the recording medium on which the media information is recorded, and reproduction at the CM portion when reproducing the media information Reproduction control means for prohibiting skipping.

Further, the invention according to claim 6 of the present invention provides:
6. The information recording / reproducing apparatus according to claim 1, wherein the media information is a digital broadcast signal.
A flag indicating an M portion is added, and
The CM detecting means detects a CM to detect a CM.
Detecting a portion.

The invention according to claim 7 of the present invention provides:
An information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, comprising: the information recording / reproducing apparatus according to claim 1. An apparatus main body and a free broadcast detecting means for detecting whether the media information is a pay broadcast or a free broadcast, and if the broadcast is free broadcast, the information recording / reproducing apparatus main body ensures reproduction of the CM section. It is characterized by.

The invention according to claim 8 of the present invention provides:
In an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, a commercial (hereinafter, referred to as a CM) is selected from media information to be recorded on the recording medium. ) The part is detected and the detected CM
The medium information including the CM part is recorded on a recording medium by adding CM identification information indicating that the part is a CM part to the part, and when the recording medium on which the media information is recorded is reproduced, the CM part Recording whether or not the media information is correctly reproduced, and suppressing the erasure of the media information including the CM portion when the media information recorded on the recording medium is erased if the CM portion is not correctly reproduced. Features.

The invention according to claim 9 of the present invention provides:
In an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, a CM portion is detected and detected from media information to be recorded on the recording medium. When the media information including the CM portion is recorded on a recording medium by adding CM identification information indicating that the CM portion is the CM portion to the recorded CM portion, and the recording medium on which the media information is recorded is reproduced, Recording whether or not the CM portion has been correctly reproduced; and when erasing the media information recorded on the recording medium, if the CM portion has not been correctly reproduced, erasure of the CM portion is suppressed. I do.

According to a tenth aspect of the present invention, there is provided an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible disk recording medium. A CM portion is detected from the media information to be recorded on the medium, and the main parts in the media information to be recorded are connected to each other, and the CM portions are connected to each other and recorded on the recording medium. Continuously reproduces only the main part or only the CM part, records whether or not the CM part was reproduced correctly when reproducing the media information, and correctly reproduces the CM part when erasing the media information recorded on the recording medium. If not, the deletion of the media information including the CM part is suppressed.
It is characterized by the following.

The invention according to claim 11 of the present invention relates to an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible disk recording medium. A CM portion is detected from the media information to be recorded on the medium, and the main parts in the media information to be recorded are connected to each other, and the CM portions are connected to each other and recorded on the recording medium. Continuously reproduces only the main part or only the CM part, records whether or not the CM part was reproduced correctly when reproducing the media information, and correctly reproduces the CM part when erasing the media information recorded on the recording medium. If not, the erasure of only the CM portion is suppressed.

According to a twelfth aspect of the present invention, there is provided an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible disk recording medium. Detecting a CM portion in the media information to be recorded on the medium, recording the media information to be recorded on the recording medium, and prohibiting skipping in the CM portion when reproducing the media information. And

According to a thirteenth aspect of the present invention, in the information recording / reproducing method according to any one of the eighth to twelfth aspects, the media information has a flag indicating a CM portion added to a digital broadcast signal. And
In addition, the detection of the CM portion is performed by detecting the flag.

According to a fourteenth aspect of the present invention, there is provided an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium. Detects a pay broadcast or a free broadcast, and if the broadcast is free, secures reproduction of the CM portion by the information recording / reproducing method according to any one of claims 8 to 12.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) Hereinafter, Embodiment 1 of the present invention described in claims 1 and 8 of the present invention will be described with reference to FIGS. This will be described with reference to FIG. In the first embodiment, the position information of the CM portion is created at the time of recording the program, and whether the CM portion is correctly reproduced at the time of reproduction is recorded. If the CM portion is not reproduced correctly at the time of erasing the program, the program cannot be erased. It was made.

FIG. 1 is a block diagram showing an information recording / reproducing apparatus for executing the information recording / reproducing method according to the first embodiment of the present invention. In FIG. 1, at the time of video / audio recording, the video / audio input unit 101 takes in digital video / audio and sends the digital video / audio to the CM determination unit 102.

CM determining section (CM detecting means, recording means) 1
02, C is set based on the cue information indicating the joint of the program.
It is determined whether the part is an M part or a main part, and information indicating that the part is a CM part is added, and video and audio are recorded in the disk storage unit 103.

At the time of reproduction, the user interface unit 10
4, the reproduction / erasure control unit (reproduction means, CM reproduction / recording means, erasure means, erasure control means) 105 retrieves the program information from the disk storage unit 103 and decodes the digital video / audio data. 1
06, and checks whether the CM portion has been correctly reproduced. The decoding unit 106 decodes the digital video / audio data and outputs video / audio data. When receiving a delete instruction from the user interface unit 104, the reproduction / deletion control unit 105 checks whether all the CM parts of the program have been reproduced. If all the CM parts have been reproduced, the disc storage unit The corresponding program is deleted from 103, and if the CM portion is not reproduced, the corresponding program is not deleted.

Next, the CM in the disk storage unit 103
FIG. 2 shows an information management table diagram. In FIG. 2, a program name 201 records the name of the recorded program, and a program start sector 202 and a program end sector 203 store the start and end of the program recorded by the sector number which is the minimum recording block of the disc. This indicates the position on the disc to be performed. CM1 Start Sector 20
4 and the CM1 end sector 205 record the position where one CM portion in the program is stored, as a pair of a start sector number and an end sector number. When there are a plurality of CM parts in a program, a CM start sector and a CM end sector exist in pairs corresponding to the number of CMs.

FIG. 3 is a flowchart showing a process of storing the CM start / end sectors in the CM determination section 102 during recording. In FIG. 3, when the recording of the digital video and audio is started, the CM determination unit 102 writes the digital video and audio into the disc storage unit 103,
It is checked whether or not the CM section has started (step S3).
01), when the start of the CM portion is found, the sector number in which it is stored is set to CM1 start sector 2
04 (step S302). When the end of the CM portion is found (step S303), the sector number is similarly stored in the CM1 end sector 205 (step S304). If the recording has not been completed (step S305), the process returns to step S301 to continue the above processing until the recording is completed. If there is no next CM portion, the next CM2 start sector is read. By storing FFFFFFFE, 1
A CM information management table for one program can be created.
FIG. 2B shows an example of the completed CM information management table.

In FIG. 2 (b), the program 1 is composed of the entire program from sector number 10000000 to sector number 1
The program 1 has one CM part, and the CM part has a sector number 100010.
It indicates that the data is stored from 00 to the sector number 10001FFF. The storage of the program name in the CM information management table and the sector number in the program start sector is performed from the time when the recording of the digital video and audio is started. This is performed when the recording of the video and audio is completed.

FIG. 4 is a flowchart showing the program reproduction process in the reproduction / erasure control unit 105 during reproduction. When the reproduction is started, the reproduction / erase control unit 105 monitors whether the pair of the CM1 start sector 204 and the CM1 end sector 205 shown in FIG. 2 is correctly reproduced. In FIG. 4, first, the CM1 start sector 20
It is monitored whether the sector number indicated by No. 4 is reproduced (step S401). When the CM1 start sector 204 is found, the CM1 end sector 205 is monitored and
When it is detected that the sector number indicated by the M1 end sector 205 is reproduced (steps S402 and S40)
3) In order to indicate that the CM part has been reproduced, CM1
FFFFFF indicating that the start sector 204 has been processed
FF is set (step S404). If skip processing is performed before the CM1 end sector 205 is detected, the process is restarted from the start sector detection. If the recording is not completed (step S40)
5) By returning to step S401, the above processing is continued until the end of recording. CM after CM part playback
FIG. 2C shows the information management table.

In FIG. 2C, the program 1 is composed of the entire program from sector number 10000000 to sector number 1F.
This is stored in FFFFFF, indicating that there was one CM portion in Program 1 but that CM portion was already reproduced.

FIG. 5 is a flowchart showing a program deletion process in the reproduction / erasure control unit 105 during reproduction. Upon receiving the erasure instruction from the user interface unit 104, the reproduction / erase control unit 105 checks whether the pair of the CM1 start sector 204 and the CM1 end sector 205 shown in FIG. 2 is correctly reproduced. In FIG. 5, the CM part number is set to 1 (step S50).
1), CM1 start sector 204 of CM part 1 is F
It is checked whether it is FFFFFFE (step S50).
2) Check whether there is a CM part. C
If the M1 start sector 204 is not FFFFFFFFE, it is determined that there is a CM portion, and it is checked whether the CM1 start sector 204 is FFFFFFFF (step S503), and it is checked whether the CM portion has been reproduced. If the result is FFFFFFFF, it is determined that the CM portion has been correctly reproduced, and the CM portion number is increased by one (step S504), and the next CM portion is checked. This operation is performed for all CM parts. FFFFFFF in CM start sector 204
If E is found, it is determined that all the CM portions have been correctly reproduced, the CM information management table is deleted, and the program is deleted. If a value other than FFFFFFFF is found in the CM1 start sector 204 in the CM portion, it is determined that a CM portion that has not been reproduced remains, and the program is not erased. That is, the CM information management table in FIG.
In the state of (b), the program is not deleted, and in the state of (c), the program is deleted.

With such a configuration, when the viewer skips the CM portion during the reproduction of the program, the program cannot be deleted from the disk storage unit 103. That is, according to this configuration, it is possible to realize an information recording / reproducing apparatus and an information recording / reproducing method in which a viewer can always view a CM part even afterwards.

In the above description of the first embodiment, C
Queue detection was used as the method for detecting the M part.
As a method for detecting the M portion, the same can be performed by using a black screen detection or using audio information such as stereo or bilingual broadcasting.

Although the disc sector number is used to represent the CM start sector and CM end sector, other values such as time information and incremental values based on a reference unit may be used. Can be implemented.

In order to indicate the end of the CM part, the value stored in the CM start sector is FFF.
Although the FFFFE is used, other values that cannot occur as the number of the CM start sector can be used.

Although FFFFFFFF is used as the value to be stored in the CM start sector to indicate that the CM portion has been correctly reproduced, other values which cannot be generated as the CM start sector number may be used. It can be implemented similarly.

Although the CM start sector and the CM end sector are provided in a table format as shown in FIG. 2, the CM start sector and the CM end sector may be held in the data of a transport stream, a program stream, or a PES which is a format of digital video and audio data. , And can be similarly implemented.

[0039] Also, the viewer performs the CM operation by the skip operation.
Although the case where the part has not been viewed has been described, in the case of high-speed reproduction, it is also possible to determine that the CM part is not reproduced correctly and perform the same operation.

In the first embodiment, the information recording / reproducing apparatus and the information recording / reproducing method using digital video and audio have been described. However, analog video is encoded as digital video in advance so that analog video is recorded as digital video. The reproduction can be similarly performed. Although the data to be recorded has been described as video / audio data, the present invention can be similarly applied to only audio data or video data.

(Embodiment 2) Hereinafter, embodiments of the present invention described in claims 2 and 9 of the present invention will be described with reference to FIGS. 1, 2, 3, 4, 6, and 7. FIG. This will be described with reference to FIG. The second embodiment is different from the first embodiment in that, in the program deletion process, in the program in which the CM portion is not reproduced, the other portion is deleted while leaving only the non-reproduced CM portion. It is.

FIG. 1 is a block diagram of an information recording / reproducing apparatus for executing an information recording / reproducing method according to a second embodiment of the present invention. Is omitted. FIG. 2 shows a CM information management table diagram, the configuration and operation of which are the same as in the first embodiment, and a description thereof will be omitted. FIG. 3 is a flowchart showing the storage processing of the CM start / end sector in the CM determination section 102 at the time of recording. The configuration and operation are the same as those in the first embodiment, and the description thereof will be omitted. FIG. 4 is a flowchart showing a program reproducing process in the reproducing / erasing control unit 105 at the time of reproduction. The configuration and operation are the same as those in the first embodiment, and thus description thereof will be omitted.

FIG. 6 is a flowchart showing a program deletion process in the reproduction / erasure control unit 105 during reproduction. Upon receiving the erasure instruction from the user interface unit 104, the reproduction / erase control unit 105 checks whether the pair of the CM1 start sector 204 and the CM1 end sector 205 shown in FIG. 2 is correctly reproduced. In FIG. 6, first, the CM part number is set to 1 (step S60).
1), CM1 start sector 204 of CM part 1 is F
Check whether it is FFFFFFE (step S60).
2) Check whether it is a CM part. If CM1 start sector 204 is not FFFFFFFE, CM
Assuming that there is a portion, it is checked whether the CM1 start sector 204 is FFFFFFFF (step S6).
03) Check whether the CM portion has been reproduced. As a result, if it is FFFFFFFF, it is determined that the CM part has been correctly reproduced, and the CM part number is increased by one (step S604), and the next part is checked. This operation is performed for all CM parts. C
If FFFFFFFE is found in the M start sector 204, it is determined that all CM parts have been correctly reproduced, the CM information management table is deleted, and the program is deleted.
FFFFF in the CM start sector 204 in the CM section
If a value other than FFF is found, it is determined that a CM portion that has not been reproduced remains, and the program start sector 202 and the program end sector 203 of the CM management table are set to FF.
The content is updated to FFFFFF (step S605), and portions other than the CM portion that has not been reproduced are deleted. That is, in FIG. 2, if the CM information management table is in the state of (c), all the programs are deleted. If the CM management table is in the state of (b), the program is deleted while leaving only the CM parts that are not reproduced. delete.

FIG. 7 shows a CM information management table including a CM portion that has not been reproduced. In FIG. 7, the program start sector 202 and the program end sector 203 are F
FFFFFFF indicates that program 1 has been deleted. CM1 start sector 204 and C
There is one CM part from the value of the M1 end sector 205, the CM part 1 has not been reproduced yet, and the CM part of the CM1 start sector 204 of 10001000 and the CM1 end sector 205 of 10001FFF remains in the disk storage unit 103. It is shown that.

With such a configuration, when the viewer skips the CM portion during the reproduction of the program, only the CM portion that has not been reproduced is left in the disk storage section 103, and the CM portion is always provided to the viewer even afterwards. Can be viewed. In addition, since the main part can be deleted from the viewpoint of the viewer while leaving the CM part that is not reproduced, the information recording / reproducing apparatus enables the disk recording device to be used efficiently by viewing the CM parts collectively later. And an information recording / reproducing method.

In the above description of the second embodiment, C
Queue detection was used as the method for detecting the M part.
As a method for detecting the M portion, the same can be implemented by using a black screen detection or audio information such as stereo or bilingual broadcasting.

Although the disc sector number is used to represent the CM start sector and the CM end sector, other values such as time information and incremental values based on the reference unit may be used. Can be implemented.

To indicate the end of the CM section, the value stored in the CM start sector is FFF.
Although the FFFFE is used, the value can not be generated as the number of the CM start sector, and another value can be similarly used.

Although FFFFFFFF is used as the value to be stored in the CM start sector to indicate that the CM portion has been correctly reproduced, other values which cannot be generated as the CM start sector number may be used. It can be implemented similarly.

In order to indicate that the program has been deleted,
Although FFFFFFFF is used as the values to be stored in the program start sector and the program end sector, other values that cannot occur as the numbers of the program start sector and the program end sector can be similarly used.

The CM start sector and the CM end sector are provided in a table format as shown in FIG.
The present invention can be similarly implemented by holding the data in a transport stream, a program stream, or PES data, which is a format of digital video / audio data.

Also, the example of the skip operation, that is, the case where the viewer does not view the CM part by the skip operation has been described.
It is also possible to determine that the part is not correctly reproduced and perform the same operation.

In the second embodiment, the information recording / reproducing apparatus and the information recording / reproducing method using digital video / audio are described. However, analog video is encoded as digital video in advance, so that analog video is recorded as digital video. The reproduction can be similarly performed. Although the data to be recorded has been described as video / audio data, the present invention can be similarly applied to only audio data or video data.

(Embodiment 3) Hereinafter, embodiments of the present invention described in claims 3 and 10 of the present invention will be described with reference to FIGS. 1, 4, 8, 9 and 10. explain. In the third embodiment, in the reproduction processing in the first embodiment, only the main part or only the CM part can be continuously reproduced.

FIG. 1 is a block diagram showing an information recording / reproducing apparatus for executing the information recording / reproducing method according to the third embodiment of the present invention. In FIG. 1, at the time of video / audio recording, the video / audio input unit 101 takes in digital video / audio and sends the digital video / audio to the CM determination unit 102. The CM judging unit 102 judges whether or not the CM part or the main part is based on the cue information indicating the joint of the program, connects the main parts and the CM parts, and stores the video / audio on the disk. The information is recorded in the unit 103. At the time of reproduction, the reproduction / erase control unit 105 controls the disc storage unit 10 based on a user operation from the user interface unit 104.
3 and sends the digital video / audio data to the decoding unit 106, and checks whether the CM portion has been correctly reproduced. In the decoding unit 106,
It decodes digital video / audio data and outputs video / audio data. When receiving a delete instruction from the user interface unit 104, the reproduction / deletion control unit 105 checks whether all the CM parts of the program have been reproduced. If all the CM parts have been reproduced, the disc storage unit The corresponding program is deleted from 103, and if the CM portion is not reproduced, the corresponding program is not deleted.

Next, the CM in the disk storage unit 103
FIG. 8 shows an information management table. FIG. 8 shows a management table of a main part and a CM part in one program. The program name 801 records the name of the recorded program, and the pointer 802 to the main part and the pointer 803 to the CM part are , And a pointer to the management table of the main part of the program and the CM part. The main program start sector 804 and the main program end sector 805 indicate the position on the disk where the start and end of the main program portion in the program are stored by the sector number which is the minimum recording block of the disc. 804 and the main story end sector 805 are stored as a pair. CM start sector 806 and CM end sector 807
Records the position where the CM portion is stored in the program in a pair of a start sector number and an end sector number. The CM flag 808 stores a flag indicating the reproduction state of the CM portion for each CM portion. When a plurality of main parts and commercial parts exist in the program, the main part start sector 804 and the main part end sector 80
No. 5 has a configuration in which the CM start sector 806, the CM end sector 807, and the CM flag 808 exist as pairs for the number of times of the main part.

FIG. 9 is a flowchart showing the storage process of the main part start / end sector and the CM start / end sector in the CM determination section 102 at the time of recording.
Shown in When recording of digital video and audio starts, CM
The determination unit 102 stores the digital video / audio in the disk storage unit 1
03 and a management table for the main part and the CM part is created. In FIG. 9, first, when recording is started, the pointer 802 to the main part and the pointer 803 to the CM part create a pointer to the main part in the program and the management table of the CM part, and the main part 1 start sector The recording start sector is stored in 804 (step S901). Subsequently, it is checked whether or not the start of the CM section has been started (step S902). When the start of the CM section is found, the current sector number in which the start is stored is set to CM1.
Stored in the start sector 806, the current sector number 1
The previous sector number is stored in the main program 1 end sector 805 (step S903). Also, when the end of the CM portion is found (step S904), the current sector number is similarly stored in the CM1 end sector 807, the sector number next to the current sector number is stored in the main program 2 start sector 804, and the CM1 flag is set. 0 is stored in 808 (step S905). The above processing is continued until the end of recording (step S906). If there is no next main part, FFFFFFF is added to the main part start sector 804.
If E is stored and there is no next CM portion, a CM information management table for one program can be created by storing FFFFFFFE in the CM start sector 806. FIG. 8B shows an example of the CM information management table thus completed.

In FIG. 8B, program 1 is composed of two main parts and one CM part.
The main part 2 ranges from 10000000 to 1000FFFF, and the CM part 1 has a sector number of 1008000.
To sector number 10008FFF,
The portion indicates that the content has not been reproduced.

At the time of reproduction, the user interface unit 10
If the main program reproduction is instructed from the reproduction / deletion control unit 10
5 follows the main part only from the pointer 802 to the main part, and continuously reproduces the main part. When the CM reproduction is instructed, the reproduction / erase control unit 105 continuously reproduces the CM portion by following only the CM portion from the pointer 803 to the CM portion.

FIG. 4 is a flowchart showing the program reproduction process in the reproduction / erasure control unit 105 during reproduction. When the reproduction is started, the reproduction / erase control unit 105 monitors whether the pair of the CM1 start sector 806 and the CM1 end sector 807 shown in FIG. In FIG. 4, first, CM1 start sector 8
It monitors whether the sector number indicated by 06 is reproduced. C
When the M1 start sector 806 is found (step S
401), the CM1 end sector 807 is monitored (Step S403), and when it is detected that the sector number indicated by the CM1 end sector 807 is reproduced, C is detected.
To indicate that the M portion has been reproduced, the CM1 flag 8
08 is set to 1 (step S404). If the skip process has been performed before the CM1 end sector 807 is detected (step S403), the process starts again from the start sector detection. The above processing is continuously performed until the end of recording (step S405). FIG. 8C shows the CM information management table after the CM partial reproduction.

In FIG. 8C, the program 1 is composed of two main parts and one CM part, and the main part 1 is one.
The main part 2 ranges from 10000000 to 1000FFFF, and the CM part 1 has a sector number of 1008000.
To sector number 10008FFF,
In the part, since the CM1 flag 808 is 1, it has been reproduced.

FIG. 10 is a flowchart showing a program deletion process in the reproduction / erasure control unit 105 during reproduction.

The reproduction / erasure control unit 105, which has received the erasure instruction from the user interface unit 104, checks whether the pair of the CM1 start sector 806 and the CM1 end sector 807 shown in FIG. In FIG. 10, first, the CM section part number is set to 1 (step S1001), and it is checked whether or not the CM1 start sector 806 of the CM section 1 is FFFFFFFFE (step S1002), and it is checked whether or not it is the CM section. CM1 start sector 806 is FFFFF
If it is not FFE, it is determined that it is a CM part, and whether or not the CM1 flag 808 is 1 is checked (step S).
1003) It is checked whether the CM portion has been reproduced. As a result, if the CM1 flag 808 is 1, it is determined that the CM portion has been correctly reproduced, and
The M part number is increased by one (step S1004), and the next part is checked. This operation is performed for all CM parts. FFFFF in CM start sector 806
If an FFE is found, it is determined that all CM portions have been correctly reproduced, the CM information management table is deleted, and the program is deleted. If a 0 value is found in the CM1 flag 808 in the CM portion, it is determined that a CM portion that has not been reproduced remains, and the program is not erased. That is, in FIG.
If the CM information management table is in the state of (b), the program is not deleted. If it is in the state of (c), the program is deleted.

With such a configuration, it is possible to continuously reproduce only the main part or the CM part, and when the viewer does not see the CM part, the program cannot be deleted from the disk storage unit 103, that is, even afterwards. Be sure to C
M part can be viewed. Also, from the viewer's point of view, there is the convenience that only the main part can be played continuously,
For the CM provider, since the CM portion can be continuously reproduced, it is possible to realize an information recording / reproducing apparatus and an information recording / reproducing method which can provide a variety of CM program creation.

In the above description of the third embodiment, C
Queue detection was used as the method for detecting the M part.
As a method of detecting the CM portion, the same can be implemented by using a black screen detection or audio information such as stereo or bilingual broadcasting.

Although the disc start sector number and the CM end sector are indicated by the sector number of the disk, other values such as time information and incremental values based on the reference unit are used. Can be similarly implemented.

In order to indicate the end of the CM part, the value stored in the CM start sector is FFF.
Although FFFFE is used, the CM start sector number cannot be used, and other values can be used.

Although 0 and 1 are used as values stored in the CM flag to indicate that the CM portion has been correctly reproduced, other values may be used as long as they can be distinguished from each other. Can be implemented.

Although the main program start sector, main program end sector, CM start sector and CM end sector are provided in a table format as shown in FIG. 8, a transport stream, which is a format of digital video / audio data, Even if the data is held in the stream or PES data, the present invention can be similarly implemented.

Also, an example in the case of the skip operation, that is, the case where the viewer did not view the CM portion due to the skip operation, has been described.
It is also possible to determine that the reproduction of the part is not correct and perform the same operation.

In the third embodiment, the information recording / reproducing apparatus and the information recording / reproducing method using digital video and audio have been described. However, analog video is encoded as digital video in advance so that analog video is recorded as digital video. The reproduction can be similarly performed.

Although the data to be recorded has been described as video / audio data, the present invention can be similarly applied to only audio data or only video data.

(Embodiment 4) Hereinafter, embodiments of the present invention described in claims 4 and 11 of the present invention will be described with reference to FIG. 1, FIG. 4, FIG. 8, FIG. 9, FIG. This will be described with reference to FIG. Embodiment 4 is different from Embodiment 3 described above.
In the program deletion process of the above, in the program in which the CM portion is not reproduced, only the non-reproduced CM portion is left, and the other portions are deleted.

FIG. 1 is a block diagram of an information recording / reproducing apparatus for executing an information recording / reproducing method according to a fourth embodiment of the present invention. The configuration and operation are the same as those in the third embodiment. Description is omitted. FIG. 8 shows a CM information management table diagram for one program. The configuration and operation are the same as those in the third embodiment, and thus description thereof will be omitted. FIG. 9 is a flowchart showing the storage processing of the main part start / end sector and the CM start / end sector in the CM determination section 102 at the time of recording. The configuration and operation are the same as those in the third embodiment. Therefore, the description is omitted.

FIG. 4 shows a reproduction / erase control unit 105 during reproduction.
Shows a flowchart diagram showing the program playback process in
The configuration and the operation are the same as those in the third embodiment, and the description is omitted.

FIG. 11 is a flowchart showing the program deletion processing in the reproduction / erasure control section 105 during reproduction.
Upon receiving the erasure instruction from the user interface unit 104, the reproduction / erase control unit 105 checks whether the pair of the CM1 start sector 806 and the CM1 end sector 807 shown in FIG. 8 is correctly reproduced. FIG.
First, the CM section part number is set to 1 (step S
1101), CM1 start sector 80 of CM part 1
It is checked whether or not 6 is FFFFFFFE (step S1102), and it is checked whether it is a CM part. C
If the M1 start sector 806 is not FFFFFFFE, it is determined that the M1 start sector 806 is a CM portion, and it is checked whether or not the CM1 flag 808 is 1 (step S1103).
It is checked whether the CM portion has been reproduced. As a result, if the CM1 flag 808 is 1,
It is determined that the M part has been correctly reproduced, the CM part number is increased by one (step S1103), and the next part is checked. This operation is performed for all CM parts.
If FFFFFFFE is found in the CM start sector 806, it is determined that all the CM portions have been correctly reproduced, the CM information management table is deleted, and the program is deleted.
If a 0 value is found in the CM1 flag 808 in the CM portion,
It is determined that a CM portion that has not been reproduced remains, and FFFFFFFF is written to the pointer 802 to the main part (step S1105), and only the main part is erased. That is, in FIG. 8, if the CM information management table is in the state of (c), all the programs are deleted, and if it is in the state of (b), only the CM part remains.

FIG. 12 shows a CM information management table in which a CM portion that has not been reproduced remains. In FIG. 12, the fact that the pointer 802 to the main part is FFFFFFFF indicates that the main part of the program 1 has been deleted. Pointer 803 to CM part is FFFFFFFF
From the values of the CM1 start sector 806, the CM1 end sector 807, and the CM1 flag 808, there is one CM part, and the CM part 1 has not been reproduced yet.
1 start sector 806 is 1008000, CM
One end sector 807 indicates that the CM portion of 10008FFF remains on the disk.

With such a configuration, it is possible to continuously reproduce only the main part or the CM part, and when the CM program is not viewed by the viewer, the CM is stored in the disk storage unit 103.
The part cannot be erased, that is, the viewer can always view the CM part even afterwards. From the viewer's point of view, there is the convenience that only the main part can be played back continuously, and only the main part that has been viewed can be erased to make effective use of the disk recording device. Therefore, it is possible to realize an information recording / reproducing apparatus and an information recording / reproducing method which can provide a variety of CM program creation.

In the above description of the fourth embodiment, C
Queue detection was used as the method for detecting the M part.
As a method of detecting the CM portion, the same can be implemented by using a black screen detection or audio information such as stereo or bilingual broadcasting.

Although the disc start sector number and the CM end sector are indicated by the sector number of the disk, other values such as time information and incremental values based on a reference unit are used. Can be similarly implemented.

To indicate the end of the CM section, the value stored in the CM start sector is FFF.
Although FFFFE is used, the CM start sector number cannot be used, and other values can be used.

To indicate that the main part has been erased, the value stored in the pointer to the main part is FF.
Although FFFFFF is used, it is not possible to use a pointer number to the main part, and another value can be used in the same manner.

Although 0 and 1 are used as values stored in the CM flag to indicate that the CM portion has been correctly reproduced, other values may be used as long as they can be distinguished from each other. Can be implemented.

Although the main program start sector, main program end sector, CM start sector, and CM end sector are provided in a table format as shown in FIG. 8, a transport stream, which is a format of digital video / audio data, Even if the data is held in the stream or PES data, the present invention can be similarly implemented.

Also, an example in the case of the skip operation, that is, the case where the viewer did not view the CM part due to the skip operation, has been described.
It is also possible to determine that the reproduction of the part is not correct and perform the same operation.

In the fourth embodiment, the information recording / reproducing apparatus and the information recording / reproducing method based on the digital video / audio are described. However, the analog video is encoded into the digital video in advance so that the analog video is recorded / reproduced. When doing so, it can be similarly implemented. Although the data to be recorded has been described as video / audio data, the present invention can be similarly applied to only audio data or video data.

(Embodiment 5) Hereinafter, embodiments of the invention described in claims 5 and 12 of the present invention will be described.
This will be described with reference to FIGS. 2, 3, 13, and 14. In the fifth embodiment, position information of a CM portion is created at the time of recording a program, and skip operation from the user is performed at the time of reproduction.
The M portion is prohibited.

FIG. 13 is a block diagram showing an information recording / reproducing apparatus for executing the information recording / reproducing method according to the fifth embodiment of the present invention. 13, at the time of video / audio recording, the video / audio input unit 1301 captures digital video / audio and sends the digital video / audio to the CM determination unit 1302. C
An M determining unit (CM detecting means, recording means) 1302 determines whether the part is a CM part or a main part based on cue information indicating a joint of a program, and adds information on the CM part.
The video and audio are recorded in the disk recording unit 1303. At the time of reproduction, the reproduction / skip control unit (reproduction means, reproduction control means) 1305 controls the disc recording unit 130 based on a user operation from the user interface unit 1304.
3 and sends the digital video / audio data to the decoding unit 1306. The decoding unit 1306 decodes the digital video / audio data and outputs video / audio data. The reproduction / skip control unit 13
In step 05, when a skip instruction is received from the user interface unit 1304, it is determined whether or not the CM portion of the corresponding program is included in the skip range. If the CM portion is included, skip processing is performed. Absent.

FIG. 2 shows a CM information management table, the structure and operation of which are the same as in the first embodiment, and a description thereof will be omitted. FIG. 3 shows a CM at the time of recording.
FIG. 10 is a flowchart showing a CM start / end sector storage process in a determination unit 1302, and FIG.
The operation and the operation are the same as those in the first embodiment, and the description thereof is omitted.

FIG. 14 is a flowchart showing the program playback processing in the playback / skip control unit 1305 during playback. When the reproduction is started, the reproduction / skip control unit 13
05 monitors a user operation from the user interface unit 1304. If the user operation is skip (step S1401), it is checked whether there is a CM part in the area to be skipped. In FIG. 14, first, the current playback position is set to Curr.
ent, the skip destination is Target = Current +
It is defined as a skip width (step S1402), and C
The M part number is set to 1 (step S1403). Then, it is checked whether the section from the start of CM1 to the end of CM1 overlaps with the section of the target position Target obtained by adding the skip width from the current playback position Current to Current (step S1404). If an overlap occurs between both sections, it is determined that the CM portion is skipped, and the skip is ignored. If there is no overlap between the sections, 1 is added to the CM part number (step S14).
05), similarly, the presence / absence of a CM portion is checked (step S1406), and all the CM portions and the current
If the section from nt to Target does not overlap, it is determined that the CM section is not skipped, and a skip operation is performed (step S1407). The above processing is performed until the recording is completed (step S1408).

With such a configuration, the viewer cannot skip the CM portion during the reproduction of the program, that is, the viewer can always view the CM portion.
An information recording / reproducing apparatus and an information recording / reproducing method can be realized.

In the above description of the fifth embodiment, C
Queue detection was used as the method for detecting the M part.
As a method of detecting the CM portion, the same can be implemented by using a black screen detection or audio information such as stereo or bilingual broadcasting.

Although the disc sector number is used to represent the CM start sector and the CM end sector, other values such as time information and incremental values based on a reference unit are used. Can be similarly implemented.

To indicate the end of the CM section, the value stored in the CM start sector is FFF.
Although FFFFE is used, the CM start sector number cannot be used, and other values can be used.

Further, when there is a CM portion in the skip range, the skip is prohibited. However, the present invention can be similarly implemented by skipping immediately before the CM portion.

Although the CM start sector and the CM end sector are provided in a table format as shown in FIG. 2, a transport stream, a program stream, and a PE which are digital video and audio data formats are provided.
Even if it is held in the data of S, it can be similarly implemented.

Also, an example in the case of the skip operation, that is, the case where the viewer did not view the CM portion due to the skip operation, has been described.
It is also possible to determine that the reproduction of the part is not correct and perform the same operation.

In the fifth embodiment, the information recording / reproducing apparatus and the information recording / reproducing method using digital video / audio have been described. However, analog video is encoded into digital video in advance, so that analog video is recorded / reproduced. When doing so, it can be similarly implemented.

Although the data to be recorded has been described as video / audio data, the present invention can be similarly applied to audio data only or video data only.

(Embodiment 6) Embodiments of the present invention described in claims 7 and 14 of the present invention will be described below with reference to FIGS. 3, 15, and 16. FIG. The sixth embodiment detects whether the broadcast is a pay broadcast or a free broadcast, and if the broadcast is a free broadcast, the information recording / reproducing apparatus according to any one of claims 1 to 5 (claims 8 to 12). Reproduction is ensured by any one of the information recording / reproducing methods described above.

FIG. 15 is a block diagram showing an information recording / reproducing apparatus (program reproducing apparatus) for executing the information recording / reproducing method according to the sixth embodiment of the present invention. FIG. 15 shows a CM determination unit, a disk storage unit 1504, a user interface unit 1505, a playback / skip / erase control unit 1506,
Information recording / reproducing apparatus main body 15 including decoding section 1507
00, the conditional access control unit 1502
Thus, it is determined whether the broadcast received by the digital broadcast receiving unit 1501 is a pay broadcast or a free broadcast, and in the case of a free broadcast, the information recording / reproducing apparatus main body 1500 ensures the reproduction of the CM portion.

In FIG. 15, at the time of video / audio recording, the digital broadcast receiving section 1501 receives the digital broadcast, demultiplexes the digital broadcast based on the information from the conditional access control section 1502, and needs to If there is, the digital video / audio data is descrambled and sent to the CM determination unit 1503. CM judgment unit 1
At 503, it is determined whether the part is a CM part or a main part based on cue information indicating a joint between programs, and based on information from a conditional access control unit (free broadcast detection means) 1502, The video and audio are recorded in the disk storage unit 1504 by adding the CM part and the information of the paid free broadcast. At the time of reproduction, based on a user operation from the user interface unit 1505, the reproduction / skip / deletion control unit 1506 extracts program information from the disk storage unit 1504, and sends digital video / audio data to the decoding unit 1507. Decoding section 150
In step 7, the digital video / audio data is decoded to output video / audio data. The information recording / reproducing apparatus according to any one of claims 1 to 5, wherein the reproduction / skip / deletion control unit 1506 responds to a skip instruction or a program deletion instruction from the user interface unit 1505. The reproduction of the CM portion is ensured by the information recording / reproducing method according to any one of claims 8 to 12.

An information recording / reproducing apparatus which executes the information recording / reproducing method according to the sixth embodiment, to which the information recording / reproducing apparatus according to claim 5 (the information recording / reproducing method according to claim 12) is applied, will be described below.

FIG. 16 shows a CM information management table in the disk storage unit 1504 according to the sixth embodiment. FIG. 16 shows a management table of a CM portion in one program. The program name 1601 records the name of the recorded program, and the paid / free division 1602 indicates whether the recorded program is paid or free. I have. Program start sector 1603 and program end sector 1604
Shows the start and end positions of the program recorded by the sector number, which is the minimum recording block of the disk, where the program is stored. A CM start sector 1605 and a CM end sector 1606 include a start sector number in which a CM part in a program is stored,
Record in pairs with the end sector number. When there are a plurality of CM parts in the program, the CM start sector 1605 and the CM end sector 1606 are configured to exist as a pair for the number of times of CM.

FIG. 3 is a flowchart showing a CM start / end sector storing process in the CM judging section 1503 at the time of recording. The configuration and operation are the same as those in the first embodiment. Is omitted.

Next, FIG. 17 is a flowchart showing the program reproduction processing in the reproduction / skip / delete control unit 1506 during reproduction. When the reproduction is started, the reproduction / skip / delete control unit 1506 monitors a user operation from the user interface unit 1505 (step S1701). Set the current playback position to Current,
The skip destination is defined as Target = Current + skip width (step S1702), and it is checked whether or not the program is a pay broadcast (step S1703). If the program is a free broadcast and the user operation is skipped, it is checked whether a CM portion exists in the skipped area. In FIG. 17, first, the CM part number is set to 1 (step S1704), and it is determined whether the section from the start of CM1 to the end of CM1 overlaps with the section of the target position Target obtained by adding the skip width from the current playback position Current to Current. Check (step S1705). If an overlap occurs between both sections, it is determined that the CM portion is skipped, and the skip is ignored. If there is no overlap between the two sections, 1 is added to the CM part number (step S1706), and it is similarly checked whether or not the section is a CM part (step S1707).
All commercials and Current to Target
If the section up to does not overlap, it is determined that the CM portion is not skipped, and a skip operation is performed (step S).
1708). On the other hand, if the program is a pay broadcast, the reproduction / skip / delete control unit 1506 unconditionally executes the user operation from the user interface unit 1505. The above processing is performed until the recording is completed (step S170)
9).

With such a configuration, during program playback,
An information recording / reproducing apparatus and information that restricts the reproduction of the CM portion only during free broadcast to the viewer, that is, enables the viewer to always view the CM portion during or after reproduction. A recording / reproducing method can be realized.

In the above description of the sixth embodiment, an example in which the information recording / reproducing apparatus according to the fifth aspect or the information recording / reproducing method according to the twelfth aspect is applied to secure reproduction when a free broadcast is received. However, the information recording / reproducing apparatus according to any one of claims 1 to 4 or the information recording / reproducing method according to any one of claims 5 to 11 can be applied similarly. It is possible.

(Embodiment 7) Embodiment 7 of the present invention described in claims 6 and 13 of the present invention will be described below.
Will be described with reference to FIGS. 15, 18, and 19. FIG. A seventh embodiment provides an information recording / reproducing apparatus according to any one of claims 1 to 5, and an information recording / reproducing method according to any one of claims 8 to 12, wherein a CM part is added to a broadcast signal. Is added.

FIG. 15 is a block diagram showing an information recording / reproducing apparatus (program reproducing apparatus) for executing the information recording / reproducing method according to the seventh embodiment of the present invention. The description is omitted because it is similar.

According to the seventh embodiment of the present invention, the CM judging section 1503 can accurately judge the CM portion. Digital broadcasting is transferred in a transport stream, which is a series of streams of digital data. FIG. 18 shows a configuration diagram of a transport stream which is a data format of digital broadcasting. The transport stream is made up of a group of transport data 1801. Transport data 1801 is
A header 1802 stores various data, and a payload 1803 stores actual video / audio data. The header 1802 has private data 1804 that can store individual data on the sending side. This private data 1804 is provided with a CM flag 1805 indicating that it is a CM part, so that it can be accurately determined that the part is a CM part.

Next, FIG. 19 is a flowchart showing the CM part detecting process in the CM judging section 1503. FIG.
In, recording is started with the current part at the start of recording as the main part of the program (step S1901), and the CM flag 1805 of the transport data 1801 is checked (step S1902). When the CM flag 1805 is ON and the current part is the main part (step S190
3) It is determined that the current transport data 1801 is a CM start (step S1904), and the CM flag 18
If 05 is on and the current part is a CM part (step S1903), the process proceeds to a recording end check. Also, CM
If the flag 1805 is off and the current part is a CM part (step S1905), it is determined that the immediately preceding transport data 1801 is a CM end (step S190).
6) If the CM flag 1805 is off and the current part is the main part (step S1905), the process proceeds to the recording end check. This process is repeated until the recording is completed (step S1907).

With such a configuration, the CM portion can be detected without mistake, and the reproduction of the CM portion is restricted, that is, the viewer can always view the CM portion during or after reproduction. Thus, the information recording / reproducing apparatus and the information recording / reproducing method can be realized.

In the above description of the seventh embodiment, the method of detecting the CM portion of the digital broadcast has been described.
In analog broadcasting, CM
By superimposing a flag and encoding an analog video into a digital video, the present method can be similarly implemented when recording and reproducing an analog video as a digital video.

[0115]

As described above, according to the first aspect of the present invention, a recording medium that can be randomly accessed includes:
In an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio, CM detecting means for detecting a commercial (hereinafter referred to as CM) portion in media information to be recorded;
CM indicating that the detected CM part is a CM part
Recording means for adding the identification information to record the media information including the CM portion on the recording medium; reproducing means for reproducing the recording medium on which the media information is recorded; and reproducing the media information when reproducing the media information. CM playback recording means for recording whether or not the CM portion has been correctly reproduced; erasing means for erasing the media information recorded on the recording medium; and erasing the media information recorded on the recording medium. If the CM part is not correctly reproduced, the medium information including the CM part cannot be erased. The advantage is that the program cannot be erased from the disc recording unit, that is, the viewer can always view the CM part even afterwards. It is.

According to the second aspect of the present invention, in an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, CM that detects the CM part in the media information to be tried
Detecting means, recording means for adding CM identification information indicating that the detected CM part is a CM part to record media information including the CM part on a recording medium, and recording the medium information recorded thereon Reproducing means for reproducing the medium;
When reproducing the media information, the CM in the media information
CM reproduction recording means for recording whether or not a portion has been correctly reproduced, erasing means for erasing the media information recorded on the recording medium, and CM for erasing the media information recorded on the recording medium. If the viewer skips the CM section during program playback, the CM section that has not been played back is provided if the viewer skips the CM section. Only the part is left in the disk recording part, and the viewer can always watch the CM part even afterwards. Also, from the viewer's point of view, the main part can be deleted while leaving the CM part that has not been played back. Therefore, by collecting the CM parts, the advantageous effect that the disk recording device can be used efficiently can be obtained. .

According to the third aspect of the present invention, there is provided an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium. CM that detects the CM part in the media information to be tried
Detecting means for connecting main parts of the media information to be recorded with each other, recording means for connecting the CM parts to each other and recording on the recording medium, and main parts of the recording medium on which the media information is recorded; Playback means for enabling continuous playback of only the CM portion and continuous playback of only the CM portion;
When reproducing the media information, the CM in the media information
CM reproduction recording means for recording whether or not the part has been correctly reproduced, erasing means for erasing the media information recorded on the recording medium, and CM part for erasing the media information recorded on the recording medium. And erasing control means for preventing the media information including the CM portion from being erased unless the media information is correctly reproduced.
Continuous playback of only the main part or the CM part is possible,
If the CM program is not watched by the viewer, the program cannot be deleted from the disk recording unit, that is, the viewer can always view the CM part even afterwards. Also, from the viewer's point of view, there is the convenience that only the main part can be continuously played back, and the CM provider can play back the CM part continuously, so that a variety of CM program creation can be provided. An advantageous effect is obtained.

According to the fourth aspect of the present invention, there is provided an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium. CM that detects the CM part in the media information to be tried
Detecting means, recording means for connecting the main parts in the media information to be recorded and connecting and recording the CM parts, and continuous reproduction of only the main part of the recording medium on which the media information is recorded. A reproducing unit that enables continuous reproduction of only the CM part; a CM reproduction recording unit that records whether or not the CM part in the media information has been correctly reproduced at the time of reproducing the media information; Erasing means for erasing the recorded media information, and, when erasing the media information recorded on the recording medium, if the CM portion is not reproduced correctly,
The erasure control means for erasing only the M portion is provided, so that the main portion or the CM portion can be continuously played back, and if the CM program is not viewed by the viewer, the disc recording portion is provided. It is not possible to erase the CM portion from, that is, the viewer can always view the CM portion even afterwards. Also, from the viewpoint of the viewer, it is convenient that only the main part can be continuously played, and only the main part that has been viewed can be erased, so that the disk recording device can be used effectively.
For the CM provider, since the CM portion can be continuously reproduced, it is possible to provide a variety of CM program creation.
The advantageous effect described above can be obtained.

According to the fifth aspect of the present invention, there is provided an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a random accessible disk recording medium. CM detecting means for detecting a CM portion in the media information to be recorded, recording means for recording the media information to be recorded on the recording medium, and reproducing means for reproducing the recording medium on which the media information is recorded. And reproduction control means for prohibiting the CM section from being skipped during reproduction of the media information, so that the viewer cannot skip the CM section during program reproduction. Has the advantageous effect of allowing the user to view.

According to a sixth aspect of the present invention, in the information recording / reproducing apparatus according to any one of the first to fifth aspects, the media information includes a flag indicating a CM portion in a digital broadcast signal. Is added.
In addition, since the CM detection means detects the CM portion by detecting the flag, the CM portion can be detected without mistake, and the reproduction of the CM portion is restricted. An advantageous effect is obtained that the CM portion can be always viewed during or after reproduction.

According to a seventh aspect of the present invention, there is provided an information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium. Item 1 includes an information recording / reproducing apparatus main body including the information recording / reproducing apparatus according to any one of Items 1 to 5, and the media information includes a free broadcast detecting means for detecting a pay broadcast or a free broadcast. Since the information recording / reproducing apparatus main body is made to ensure reproduction of the CM section,
There is an advantageous effect that a restriction is imposed on the reproduction of the CM portion only during free broadcast to the viewer during program reproduction, that is, the viewer can always view the CM portion at the time of reproduction or later. Can be

According to the invention described in claim 8 of the present invention, in the information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, A commercial (hereinafter, referred to as a CM) portion is detected from the media information to be recorded on the recording medium, CM identification information indicating that the CM portion is a CM portion is added to the detected CM portion, and the CM portion is added. The media information including the media information is recorded on a recording medium, and when the recording medium on which the media information is recorded is reproduced, whether or not the CM portion is correctly reproduced is recorded. At the time of erasing, if the CM section is not correctly reproduced, the erasure of the media information including the CM section is suppressed. When the viewer skips the CM part during the reproduction of the program, there is obtained an advantageous effect that the program cannot be erased from the disc recording unit, that is, the viewer can always view the CM part even afterwards. .

According to the ninth aspect of the present invention, there is provided an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium. From the media information to be recorded on the recording medium,
A part is detected, CM identification information indicating that the part is a CM part is added to the detected CM part, media information including the CM part is recorded on a recording medium, and the recording medium on which the media information is recorded is recorded. At the time of reproduction, whether or not the CM portion has been correctly reproduced is recorded, and when the media information recorded on the recording medium is erased, the deletion of the CM portion is suppressed if the CM portion is not correctly reproduced. Therefore, when the viewer skips the CM portion during program playback, only the CM portion that has not been reproduced is left in the disk recording section, and the viewer is always required to view the CM portion even afterwards. be able to. Also, from the viewer's point of view, the main part can be deleted while leaving the CM part that has not been played back. Therefore, by collecting the CM parts, the advantageous effect that the disk recording device can be used efficiently can be obtained. .

According to the tenth aspect of the present invention, a randomly accessible disk recording medium is
In an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio, a CM portion is detected from media information to be recorded on the recording medium, and a main part in the media information to be recorded is detected. The CM portions are connected to each other, and the CM portions are connected to each other and recorded on the recording medium. Only the main part of the media information or only the CM portion is continuously reproduced. Is recorded, and when the media information recorded on the recording medium is erased, if the CM portion is not correctly reproduced, the erasure of the media information including the CM portion is suppressed. Alternatively, continuous playback of only the CM part is possible, and if the viewer does not watch the CM program, You can not erase the program from the department, that is, even it is possible to watch the always CM part to the viewer at a later time. Also, from the viewer's point of view, there is the convenience that only the main part can be continuously played back, and the CM provider can play back the CM part continuously, so that a variety of CM program creation can be provided. An advantageous effect is obtained.

According to the eleventh aspect of the present invention, a randomly accessible disk recording medium is
In an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio, a CM portion is detected from media information to be recorded on the recording medium, and a main part in the media information to be recorded is detected. The CM portions are connected to each other, and the CM portions are connected to each other and recorded on the recording medium. Only the main part of the media information or only the CM portion is continuously reproduced. Is recorded, and when the media information recorded on the recording medium is erased, the erasure of only the CM portion is suppressed unless the CM portion is correctly reproduced.
Continuous playback of only the main part or the CM part is possible,
If the CM program is not watched by the viewer, the CM portion cannot be erased from the disk recording section, that is, the viewer can always view the CM portion even afterwards. From the viewer's point of view, there is the convenience that only the main part can be played continuously, and only the main part that has been viewed can be erased to make effective use of the disk recording device. As a result, the advantageous effect that the variety of CM program creation can be provided can be obtained.

According to the twelfth aspect of the present invention, a random accessible disk recording medium is
In an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio, a CM portion in media information to be recorded on the recording medium is detected, and the media information to be recorded is recorded on the recording medium. , And skip the CM part when playing back the media information.
An advantageous effect is obtained in that the viewer cannot skip the CM portion during program reproduction, that is, the viewer can always view the CM portion.

According to a thirteenth aspect of the present invention, in the information recording / reproducing method according to any one of the eighth to twelfth aspects, the media information includes a flag indicating a CM portion in a digital broadcast signal. And the CM portion is detected by detecting the flag, so that the CM portion can be detected without mistake and the reproduction of the CM portion is restricted. Add
That is, the CM must be provided to the viewer even during playback or afterwards.
An advantageous effect that a part can be viewed is obtained.

According to the fourteenth aspect of the present invention, there is provided an information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium. 13. When the media information is a pay broadcast or a free broadcast, and if the broadcast is a free broadcast, the reproduction of the CM portion is ensured by the information recording / reproducing method according to claim 8. During playback, there is an advantageous effect that a restriction is placed on the reproduction of the CM portion only during free broadcast to the viewer, that is, the viewer can always view the CM portion during or after reproduction. .

[Brief description of the drawings]

FIG. 1 is a block diagram of an information recording / reproducing apparatus according to a first embodiment, a second embodiment, a third embodiment, and a fourth embodiment of the present invention.

FIG. 2 is a diagram showing a CM information management table according to the first, second, and fifth embodiments of the present invention.

FIG. 3 is a flowchart showing a CM start / end sector storage process according to the first, second, fifth, and sixth embodiments of the present invention.

FIG. 4 is a flowchart showing a program reproduction process according to the first, second, third and fourth embodiments of the present invention.

FIG. 5 is a flowchart showing a program deletion process according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing a program deletion process according to the second embodiment of the present invention.

FIG. 7 is a diagram showing a CM information management table according to the second embodiment of the present invention.

FIG. 8 is a diagram showing a CM information management table according to the third and fourth embodiments of the present invention.

FIG. 9 is a flowchart showing a storing process of a main part start / end sector and a CM start / end sector in the third and fourth embodiments of the present invention.

FIG. 10 is a flowchart showing a program deletion process according to the third embodiment of the present invention.

FIG. 11 is a flowchart showing a program deletion process according to the fourth embodiment of the present invention.

FIG. 12 is a CM information management table according to the fourth embodiment of the present invention.

FIG. 13 is a block diagram of an information recording / reproducing apparatus according to Embodiment 5 of the present invention.

FIG. 14 is a flowchart showing a program reproduction process according to the fifth embodiment of the present invention.

FIG. 15 is a block diagram showing an information recording / reproducing apparatus according to Embodiments 6 and 7 of the present invention.

FIG. 16 is a diagram showing a CM information management table according to the sixth embodiment of the present invention.

FIG. 17 is a flowchart showing a program reproduction process according to the sixth embodiment of the present invention.

FIG. 18 is a configuration diagram of a transport stream according to the seventh embodiment of the present invention.

FIG. 19 is a flowchart showing a CM part detection process according to the seventh embodiment of the present invention.

FIG. 20 is a diagram showing a conventional information recording / reproducing method and apparatus.

[Explanation of symbols]

 101, 1301 Video / audio input unit 102, 1302, 1503 CM determination unit 103, 1303, 1504 Disk storage unit 104, 1304, 1505 User interface unit 105 Reproduction / deletion control unit 106, 1306, 1507 Decoding unit 201, 801, 1601 Program name 202, 1603 Program start sector 203, 1604 Program end sector 204, 806, 1605 CM start sector 205, 807, 1606 CM end sector 802 Pointer to main program 803 Pointer to CM 804 Main program start sector 805 Main program end sector 808, 1805 CM flag 1305 Reproduction / skip control unit 1500 Information recording / reproducing device main body 1501 Digital broadcast receiving unit 1502 Conditional unit Seth control unit 1506 Play-skipping deletion control unit 1602 toll free classified 1801 transport data 1802 header 1803 payload 1804 private data

Claims (14)

[Claims] 1. An information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, comprising a commercial (hereinafter referred to as a CM) in the media information to be recorded. CM detecting means for detecting a portion, and a CM indicating that the detected CM portion is a CM portion
Recording means for adding the identification information to record the media information including the CM portion on a recording medium; reproducing means for reproducing the recording medium on which the media information is recorded; and reproducing the media information when reproducing the media information. CM
CM reproduction recording means for recording whether or not the portion has been correctly reproduced; erasing means for erasing the media information recorded on the recording medium; and erasing the CM information when erasing the media information recorded on the recording medium. If the part is not reproduced correctly, the C
An information recording / reproducing apparatus, comprising: erasure control means for preventing erasure of the media information including the M portion. 2. An information recording / reproducing apparatus for recording / reproducing media information including at least one of a digital video and a digital audio on a randomly accessible recording medium, wherein a CM portion detecting a CM portion in the media information to be recorded is detected. Means, and a CM indicating that the detected CM portion is a CM portion
Recording means for adding the identification information to record the media information including the CM portion on a recording medium; reproducing means for reproducing the recording medium on which the media information is recorded; and reproducing the media information when reproducing the media information. CM
CM reproduction recording means for recording whether or not the portion has been correctly reproduced; erasing means for erasing the media information recorded on the recording medium; and erasing the CM information when erasing the media information recorded on the recording medium. If the part is not reproduced correctly, the C
An information recording / reproducing apparatus, comprising: an erasing control means for preventing erasing of only the M portion. 3. An information recording / reproducing apparatus for recording / reproducing media information including at least one of a digital video and a digital audio on a randomly accessible recording medium, wherein a CM portion detecting a CM portion in the media information to be recorded is detected. Means for connecting main parts in the media information to be recorded, and recording means for connecting the CM parts to each other and recording on the recording medium; and only the main part of the recording medium on which the media information is recorded. Playback means for enabling continuous playback of the CM information and continuous playback of only the CM portion;
CM playback recording means for recording whether or not the part has been correctly reproduced; erasing means for erasing the media information recorded on the recording medium; and CM part for erasing the media information recorded on the recording medium. An information recording / reproducing apparatus, comprising: erasure control means for preventing the media information including the CM portion from being erased if is not reproduced correctly. 4. An information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, wherein CM detection for detecting a CM portion in the media information to be recorded is performed. Means for connecting main parts in the media information to be recorded, recording means for connecting and recording the CM parts, and continuous reproduction of only the main part of the recording medium on which the media information is recorded, and A reproducing unit that enables continuous reproduction of only the CM portion; and a CM in the media information when reproducing the media information.
CM playback recording means for recording whether or not the part has been correctly reproduced; erasing means for erasing the media information recorded on the recording medium; and CM part for erasing the media information recorded on the recording medium. An information recording / reproducing apparatus, comprising: erasing control means for preventing only the CM portion from being erased unless is reproduced correctly. 5. An information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible disk recording medium, wherein the CM detects a CM portion in the media information to be recorded. Detecting means; recording means for recording media information to be recorded on the recording medium; reproducing means for reproducing the recording medium on which the media information is recorded; and reproduction skipping in the CM portion when reproducing the media information. An information recording / reproducing apparatus, comprising: a reproduction control unit for prohibiting the operation. 6. The information recording / reproducing apparatus according to claim 1, wherein said media information is obtained by adding a flag indicating a CM portion to a digital broadcast signal, and said CM detection is performed. The information recording / reproducing apparatus, wherein the means detects a CM portion by detecting the flag. 7. An information recording / reproducing apparatus for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, wherein the information recording / reproducing apparatus according to any one of claims 1 to 5. And a free broadcast detecting means for detecting whether the media information is a pay broadcast or a free broadcast.
An information recording / reproducing apparatus for ensuring reproduction of an M portion. 8. An information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, comprising:
A commercial (hereinafter referred to as CM) portion is detected, and a CM indicating that the detected CM portion is a CM portion
Recording the media information including the CM portion on the recording medium by adding the identification information, and recording whether or not the CM portion was correctly reproduced when reproducing the recording medium on which the media information is recorded; At the time of erasing the media information recorded on the recording medium, if the CM portion is not correctly reproduced, the C
An information recording / reproducing method, wherein erasure of the media information including an M portion is suppressed. 9. An information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible recording medium, comprising:
CM that detects a CM part and indicates that the detected CM part is a CM part
Recording the media information including the CM portion on the recording medium by adding the identification information, and when reproducing the recording medium on which the media information is recorded, recording whether or not the CM portion has been correctly reproduced; At the time of erasing the media information recorded on the recording medium, if the CM portion is not correctly reproduced, the C
An information recording / reproducing method, wherein erasure of an M portion is suppressed. 10. An information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio on a randomly accessible disk recording medium, comprising the steps of:
Detecting the M part, connecting the main parts in the media information to be recorded and connecting the CM parts to record on the recording medium, and continuously reproducing only the main part or only the CM part of the media information Then, it is recorded whether or not the CM portion was correctly reproduced at the time of reproducing the media information. At the time of erasing the media information recorded on the recording medium, if the CM portion was not reproduced correctly, the CM portion including the CM portion was recorded. An information recording / reproducing method characterized by suppressing erasure of media information. 11. An information recording / reproducing method for recording / reproducing media information containing at least one of digital video and digital audio on a randomly accessible disk recording medium, comprising the steps of:
Detecting the M part, connecting the main parts in the media information to be recorded and connecting the CM parts to record on the recording medium, and continuously reproducing only the main part or only the CM part of the media information Then, it is recorded whether or not the CM portion has been correctly reproduced at the time of reproducing the media information. At the time of erasing the media information recorded on the recording medium, if the CM portion has not been correctly reproduced, only the CM portion is deleted. An information recording / reproducing method, characterized in that: 12. An information recording / reproducing method for recording / reproducing media information containing at least one of digital video and digital audio on a disk recording medium which can be accessed randomly, wherein a CM in the media information to be recorded on the recording medium is provided.
An information recording / reproducing method, comprising: detecting a portion, recording media information to be recorded on the recording medium, and prohibiting skipping in a CM portion when reproducing the media information. 13. The information recording / reproducing method according to claim 8, wherein the media information is obtained by adding a flag indicating a CM portion to a digital broadcast signal; The information recording / reproducing method is performed by detecting the flag. 14. A recording medium that can be randomly accessed,
An information recording / reproducing method for recording / reproducing media information including at least one of digital video and digital audio, wherein the media information detects a pay broadcast or a free broadcast, and if the media information is a free broadcast, the media information according to claim 8 An information recording / reproducing method, wherein the reproduction of the CM portion is ensured by the information recording / reproducing method described above.