JP3742383B2 - Program recording apparatus and program recording method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording apparatus and a recording method for recording data compliant with a predetermined standard (DVD-Video standard).
[0002]
[Prior art]
In recent years, with the start of digital broadcasting, research and development related to a digital broadcast receiving apparatus that receives digital broadcasts has been actively promoted. For example, even when the end time of the first program exceeds the start time of the next program, it is possible to receive both programs without sacrificing either program for the overlapped part of the time zone A technique related to the apparatus is disclosed (Patent Document 1).
[0003]
[Patent Document 1]
JP 2000-152102 A
[0004]
[Problems to be solved by the invention]
In recent years, DVD-Video discs that contain video works such as movies exclusively for reproduction have been remarkable. The DVD-Video disc adopts the DVD-Video standard as a recording format. The DVD-Video standard is a format compliant with the international standard MPEG (Moving Picture Expert Group) that defines the encoding format of video data.
[0005]
Furthermore, DVD-R discs that can be written only once and are physically compatible with DVD-Video discs are also becoming popular. For example, by writing a program broadcast on a DVD-R disc in a DVD-Video standard format, the program broadcast can be enjoyed in an environment where the DVD-Video disc can be reproduced.
[0006]
Here, a problem arises when a plurality of program broadcasts broadcast in the same time zone are recorded in the DVD-Video standard format. There is no suggestion about recording considering the convenience of reproduction. The above-mentioned Patent Document 1 does not mention recording in consideration of the DVD-Video standard format.
[0007]
The object of the present invention has been made in view of the circumstances as described above, and in consideration of convenience at the time of reproduction of a plurality of programs in which at least some of the broadcast time zones overlap, the DVD-Video standard An object of the present invention is to provide a program recording apparatus and a program recording method capable of recording in a format.
[0008]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object, a program recording apparatus and a program recording method of the present invention are configured as follows.
[0009]
(1) In the program recording apparatus of the present invention, at least a part of the broadcast time zone overlaps with the first recording means for recording one program as one video title information (VTS) conforming to the DVD-Video standard. Second recording means for recording a plurality of programs on the same channel as one video title information (VTS) compliant with the DVD-Video standard.
[0010]
(2) In the program recording method of the present invention, a plurality of programs on the same channel overlapping at least some of the broadcast time zones are recorded as one video title information (VTS) compliant with the DVD-Video standard.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
FIG. 1 is a block diagram showing an example of an optical disc recording / reproducing apparatus according to an embodiment of the present invention. 1 includes a main MPU 10, a flash ROM 11, a work memory 12, a tuner 20, a line selector 21, an audio AD converter 22, a video decoder 23, a 3YCDNR 24, an EDO 25, a frame synchronizer 26, an SDRAM 27, and an audio encoder. 28, MPEG2 encoder 29, SDRAM 30, MPEG decoder 31, SDRAM 32, audio DA converter 33, video decoder 34, graphic circuit 35, SDRAM 36, timer MPU 40, display MPU 50, display 51, ATAPI controller 60, bridge circuit 61, SDRAM 62, copy protection A processing unit 63 and a CPRM 64 are provided.
[0013]
The overall operation of the optical disc recording / reproducing apparatus A is controlled by the main MPU 10. The main MPU 10 is connected to the flash ROM 11 and the work memory 12 via a data bus. An input terminal (line-in) and a tuner 20 are connected to the line selector 21. The tuner 20 is connected to the timer MPU 40. The timer MPU 40 controls the operation of the tuner 20. The timer MPU 40 is also connected to the display MPU 50, and the display MPU 50 is connected to the display 51. The timer MPU 40 and the display MPU 50 control the operation of the display 51.
[0014]
A signal output from the line selector 21 is input to the audio AD converter 22 and the 3YCDNR 24. The audio signal output from the audio AD converter 22 is input to the audio encoder 28. The audio encoder 28 encodes the input audio signal and outputs it to the MPEG2 encoder 29. An SDRAM 30 is connected to the MPEG2 encoder 29. An EDO 25 is connected to the 3YCDNR 24. A signal output from the 3YCDNR 24 is input to the video decoder 23. A signal output from the video decoder 23 is input to the frame synchronizer 26. An SDRAM 27 is connected to the frame synchronizer 26. The frame signal output from the frame synchronizer 26 is input to the MPEG2 encoder 29.
[0015]
The MPEG2 encoder 29 encodes the input signal. For example, MPEG stream data is generated by this encoding. The MPEG stream data generated by the MPEG2 encoder 29 is output to the bridge circuit 61. The bridge circuit 61 outputs the input MPEG stream data to the ATAPI controller 60. An SDRAM 62 is connected to the ATAPI controller 60. The ATAPI controller 60 outputs the MPEG stream data to the hard disk drive 71 via the copy protection processing unit 63 or to the optical disk drive 72 via the CPRM 64.
[0016]
The hard disk drive 71 records MPEG stream data on the hard disk HD and reads MPEG stream data recorded on the hard disk HD. The optical disk drive 72 records MPEG stream data on the optical disk D and reads MPEG stream data recorded on the optical disk D.
[0017]
MPEG stream data read from the disk is input to the MPEG decoder 31 via the ATAPI controller 60. An SDRAM 32 is connected to the MPEG decoder 31. The MPEG decoder 31 decodes the MPEG stream data and outputs it to the audio DA converter 33 and the graphic circuit 35. The audio DA converter 33 outputs an audio signal included in the MPEG stream data. An SDRAM 36 is connected to the graphic circuit 35. The graphic signal output from the graphic circuit 35 is input to the video decoder 34. The video decoder 34 outputs a video signal.
[0018]
FIG. 2 is a diagram illustrating an example of a data structure compliant with the DVD-Video standard (predetermined standard). As shown in FIG. 2, the data compliant with the DVD-Video standard includes video management information (VIDEO MANAGER) and video title information (VIDEO TITLE SET).
[0019]
VIDEO MANAGER (VMG102) is information that exists only in the disc, and up to 99 recordings of VIDEO TITLE SET (VTS103) are permitted. The VMG 102 controls the reproduction of various data included in the VTS 103. That is, the VMG 102 plays a role as reproduction control information. From the innermost circumference in the disc, ISO 9660 / UDF Bridge File Structure 101 (file system), VMG 102, VTS 103, and Volume Structure 104 are recorded in this order. Each Empty Logical Blocks 105 is not essential and the size is not fixed.
[0020]
The VMG 102 includes a VIDEO MANAGER INFORMATION (VMGI). The VTS 103 includes a VIDEO TITLE SET INFORMATION (VTSI). The recording / reproducing apparatus shown in FIG. 1 reads VMGI and VTSI via a file system, and reproduces a DVD-Video title based on the read information.
[0021]
FIG. 3 is a diagram illustrating a VMGI access method via a file system.
[0022]
When a DVD-R in which DVD-Video data is recorded is inserted, the recording / playback apparatus shown in FIG. 1 refers to the ANCHOR VOLUME DESCRIPTOR 108 recorded at a fixed address on the disc, reads the PARTITION DESCRIPTOR 106 from the disc, Know the playback range above. Further, by referring to the LOGICAL VOLUME DESCRIPTOR 107 and reading the FILE SET DESCRIPTOR 109, the root directories 110 and 111 and the VIDEO_TS directories 112 and 113 can be referred to, and the VMGI (VIDEO_TS.IFO 122) can be accessed.
[0023]
FIG. 4 is a diagram showing a playback sequence of the title menu.
[0024]
VOB for VMGM (VIDEO_TS.VOB129) is referred to and reproduced by VMGM_VOBS_SA128 in VMGI.
[0025]
FIG. 5 is a diagram showing a title playback sequence.
[0026]
When there is a title reproduction request, the VTS 132 designated from TT_SRPT 131 described in VMGI is referred to. In the example, VTSI (VTS — 01 — 0.IFO) of VTS # 2 is searched.
[0027]
In the case of menu playback, VOB for VTSM 137 refers to VTSM_VOBS_SA 137. In the case of title reproduction, VOB for VTS 138 refers to VTSTT_VOBS_SA136.
[0028]
Next, recording processing for recording a program broadcast in a format compliant with the DVD-Video standard by the recording / reproducing apparatus shown in FIG. 1 will be described.
[0029]
First, normal recording processing (recording processing of one program) will be described with reference to the flowchart shown in FIG. The timer MPU 40 controls the operation of the tuner 20 based on, for example, reservation recording information, and selects a channel and program to be reserved for recording. For example, it is assumed that the scheduled recording information 1 that instructs the recording / playback apparatus to record the program 1 of the channel 1 in a predetermined time zone is set. The timer MPU 40 controls the operation of the tuner 20 based on the reserved recording information 1, and selects the program 1 of the channel 1 in a predetermined time zone (ST11). Accordingly, the data of channel 1 is output from the line selector 21. The audio encoder 28 and the MPEG2 encoder 29 convert the data of the program 1 of the channel 1 into a format compliant with the DVD-Video standard. That is, the program 1 data of channel 1 is converted into one video title information (VTS # 1) (ST12). Further, the audio encoder 28 and the MPEG2 encoder 29 generate reproduction control information for controlling reproduction of the video title information (VTS # 1). The hard disk drive 71 or the optical disk drive 72 records the data of the program 1 of the channel 1 on the hard disk HD or the optical disk D. That is, the hard disk drive 71 or the optical disk drive 72 stores the video title information (VTS # 1) corresponding to the data of the program 1 of the channel 1 and the video title information (VTS # 1) with respect to the hard disk HD or the optical disk D. Playback control information for controlling playback is recorded (ST13). Incidentally, the reproduction control information is recorded in a state included in the video management information (VMG). This completes normal recording.
[0030]
Next, with reference to FIG. 7 to FIG. 9, recording processing of a plurality of programs on the same channel in which some broadcast time zones overlap will be described. FIG. 7 is a flowchart for explaining a recording process for a plurality of programs on the same channel in which some broadcast time zones overlap. FIG. 8 is a diagram illustrating the image recording process of a plurality of similar programs. FIG. 9 is a diagram illustrating a modified example of a recording process for a plurality of similar programs.
[0031]
Program 1, program 2, and program 3 shown in FIG. 8 are programs of the same channel. For example, it is assumed that program 1, program 2, and program 3 are all channel 1 programs. Assume that recording reservation information 1, 2, and 3 are set for the recording / reproducing apparatus shown in FIG. The recording reservation information 1 is information for instructing recording of the program 1 of the channel 1 in the time zone from the recording start time t1 to the recording end time t3. The recording reservation information 2 is information instructing recording of the program 2 of the channel 1 in the time zone from the recording start time t2 to the recording end time t5. The recording reservation information 3 is information instructing recording of the program 3 of the channel 1 in the time period from the recording start time t4 to the recording end time t6. That is, recording of a plurality of programs (program 1, program 2, program 3) of the same channel overlapping at least part of the broadcast time zone is reserved for the recording / reproducing apparatus shown in FIG.
[0032]
The timer MPU 40 controls the operation of the tuner 20 based on the scheduled recording information 1, 2, and 3, and selects the program 1, the program 2, and the program 3 of the channel 1 in a predetermined time zone (ST21). In the multi-program recording process shown in FIG. 8, it is assumed that a program in a later time zone is preferentially recorded. That is, program 2 is recorded with priority over program 1. Program 3 is preferentially recorded over program 2. That is, the program 1 of the channel 1 is selected in the time period from the recording start time t1 of the program 1 of the channel 1 to the recording start time t2 of the program 2 of the channel 1. Subsequently, the program 2 of the channel 1 is selected in the time period from the recording start time t2 of the program 2 of the channel 1 to the recording start time t4 of the program 3 of the channel 1. Subsequently, the channel 3 program 3 is selected in the time period from the recording start time t4 of the channel 1 program 3 to the recording end time t6 of the channel 1 program 3.
[0033]
Accordingly, the data of program 1, program 2 and program 3 of channel 1 are sequentially output from the line selector 21 as time elapses. The audio encoder 28 and the MPEG2 encoder 29 convert the data of the program 1, the program 2 and the program 3 of the channel 1 into a format conforming to the DVD-Video standard. That is, the data of program 1, program 2, and program 3 of channel 1 is converted into one video title information (VTS # 1) (ST22). Further, the audio encoder 28 and the MPEG2 encoder 29 play back each chapter by setting the data of the program 1 of the channel 1 as the chapter 1, the data of the program 2 of the channel 1 as the chapter 2, and the data of the program 3 of the channel 1 as the chapter 3. The reproduction control information that enables the The hard disk drive 71 or the optical disk drive 72 records the data of the program 1, the program 2, and the program 3 of the channel 1 on the hard disk HD or the optical disk D. In other words, the hard disk live 71 or the optical disk drive 72, with respect to the hard disk HD or the optical disk D, the video title information (VTS # 1) corresponding to the data of the program 1, the program 2, and the program 3 of the channel 1 and the video title information. Playback control information that enables playback in units of chapters corresponding to each program included in (VTS # 1) is recorded (ST23). As described above, the program 1, the program 2, and the program 3 of the channel 1 are recorded as one video title information. Further, data of program 1 on channel 1 is managed as chapter 1, data of program 2 on channel 1 is managed as chapter 2, and data of program 3 on channel 1 is managed as chapter 3. Incidentally, the reproduction control information is recorded in a state included in the video management information (VMG).
[0034]
Further, as shown in FIG. 9, recording in the overlapping time zone may be controlled. Program 1 and program 2 shown in FIG. 9 are programs of the same channel. For example, it is assumed that program 1 and program 2 are all channel 1 programs. It is assumed that recording reservation information 1 and 2 are set for the recording / reproducing apparatus shown in FIG. It is assumed that the recording reservation information 1 is information instructing recording of the program 1 of the channel 1 during the recording start time t11 to the recording end time t15. The recording reservation information 2 is information for instructing recording of the program 2 of the channel 1 in the time period from the recording start time t12 to the recording end time t16. That is, recording of a plurality of programs (program 1 and program 2) of the same channel in which at least some of the broadcast time zones overlap is reserved for the recording / reproducing apparatus shown in FIG.
[0035]
The recording process 1 shown in FIG. 9 shows a case where a program in a later time zone is preferentially recorded. That is, program 2 is recorded with priority over program 1. That is, the program 1 of the channel 1 is selected in the time period from the recording start time t11 of the program 1 of the channel 1 to the recording start time t12 of the program 2 of the channel 1. Subsequently, the program 2 of the channel 1 is selected in a time period from the recording start time t12 of the program 2 of the channel 1 to the recording end time t16 of the program 2 of the channel 1.
[0036]
The recording process 2 shown in FIG. 9 shows a case where a program in an early time zone is preferentially recorded. That is, program 1 is recorded with priority over program 2. That is, the program 1 of the channel 1 is selected in the time period from the recording start time t11 of the program 1 of the channel 1 to the recording end time t15 of the program 1 of the channel 1. Subsequently, the program 2 of the channel 1 is selected in the time period from the recording end time t15 of the program 1 of the channel 1 to the recording end time t16 of the program 2 of the channel 1.
[0037]
The video recording process 3 shown in FIG. 9 shows a case where video is recorded by dividing the overlapping time zone at an arbitrary ratio (m: n). That is, the program 1 of the channel 1 is selected in the time zone from the recording start time t11 of the program 1 of the channel 1 to the arbitrary timing t13 of the overlapping time zone of the program 1 and the program 2 of the channel 1. Subsequently, the program 2 of the channel 1 is selected in the time zone from the arbitrary timing t13 in the overlapping time zone to the recording end time t16 of the program 2 of the channel 1.
[0038]
The recording process 4 shown in FIG. 9 shows a case where recording is performed by dividing the video or audio signal at the change point in the overlapping time zone. That is, the program 1 of the channel 1 is selected in the time zone from the recording start time t11 of the program 1 of the channel 1 to the change point t14 of the video or audio signal in the overlapping time zone. Subsequently, the program 2 of the channel 1 is selected in the time period from the change point t14 to the recording end time t16 of the program 2 of the channel 1.
[0039]
Also in the recording processes 1 to 4 shown in FIG. 9, the program 1 and program 2 data of the channel 1 are converted into one video title information (VTS # 1) as described above. Further, the data of the program 1 of the channel 1 can be reproduced as a chapter 1 and the data of the program 2 of the channel 1 can be reproduced as a chapter 2 in units of chapters.
[0040]
As described above, according to the present invention, a plurality of programs in the overlapping time zone can be recorded as one video title information (VTS # 1). In particular, since a plurality of programs on the same channel are recorded as one video title information (VTS # 1), each program can be smoothly reproduced without being cut off during reproduction. In addition, since one program can be reproduced as one chapter, skip reproduction or the like in units of programs is possible.
[0041]
Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be obtained as an invention.
[0042]
【The invention's effect】
According to the present invention, a program recording apparatus and a program recording method capable of recording in a DVD-Video standard format in consideration of convenience during reproduction of a plurality of programs having at least some of the broadcast time zones overlapping Can provide.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of an optical disc recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a data structure conforming to the DVD-Video standard.
FIG. 3 is a diagram illustrating a VMGI access method via a file system;
FIG. 4 is a flowchart showing a playback sequence of a title menu.
FIG. 5 is a flowchart showing a title playback sequence;
FIG. 6 is a flowchart for explaining normal recording processing (recording processing of one program).
FIG. 7 is a flowchart for describing recording processing of a plurality of programs on the same channel in which some broadcast time zones overlap.
FIG. 8 is a diagram illustrating a recording process of a plurality of programs on the same channel in which some broadcast time zones overlap.
FIG. 9 is a diagram illustrating a modified example of recording processing of a plurality of programs on the same channel in which some broadcast time zones overlap.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Main MPU, 11 ... Flash ROM, 12 ... Work memory, 20 ... Tuner, 21 ... Line selector, 22 ... Audio AD converter, 23 ... Video decoder, 24 ... 3YCDNR, 25 ... EDO, 26 ... Frame synchronizer, 27 ... SDRAM, 28 ... Audio encoder, 29 ... MPEG2 encoder, 30 ... SDRAM, 31 ... MPEG decoder, 32 ... Graphic circuit, 33 ... Audio DA converter, 34 ... Video encoder, 35, 36 ... SDRAM, 40 ... Timer MPU, 50 ... Display MPU, 51 ... Display, 60 ... ATAPI controller, 61 ... Bridge, 62 ... SDRAM, 63 ... Copy protection, 64 ... CPRM, 71, 72 ... Disk drive

Claims (4)

A first recording means for recording one program as one video title information conforming to a predetermined standard;
Second recording means for recording the first and second programs of the same channel overlapping at least a part of the broadcast time period as one video title information conforming to a predetermined standard;
With
The second recording means includes an instruction to record the first program from time T1 to time T2, and the second time from time T3 between time T1 and time T2 to time T4 after time T2. Based on an instruction to record a program, the first program is recorded from the time T1 to the time T3, and either the first program or the second program from the time T3 to the time T2 And recording the second program from the time T2 to the time T4.
A program recording apparatus characterized by that. The data compliant with a predetermined standard includes the video title information and video management information for controlling reproduction of the video title information,
Said second recording means, when recording the first and second program as one of the video title information, the video management including information for managing the first and second programs respectively as one chapter Record information,
The program recording apparatus according to claim 1, wherein: A method of recording a plurality of programs on the same channel overlapping at least a part of a broadcast time period as one video title information complying with a predetermined standard ,
Based on an instruction to record the first program from time T1 to time T2, and an instruction to record the second program from time T3 between time T1 and time T2 to time T4 after time T2, The first program is recorded from the time T1 to the time T3, and one of the first program and the second program is recorded from the time T3 to the time T2, and from the time T2 The program recording method , wherein the second program is recorded over the time T4 . The data compliant with a predetermined standard includes the video title information and video management information for controlling reproduction of the video title information,
When the first and second programs are recorded as one video title information, the video management information including information managing each of the first and second programs as one chapter is recorded;
The program recording method according to claim 3, wherein:

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