JP4369604B2 - Optical disc recording apparatus, reproducing apparatus and recording method suitable for seamless reproduction - Google Patents

Optical disc recording apparatus, reproducing apparatus and recording method suitable for seamless reproduction Download PDF

Info

Publication number
JP4369604B2
JP4369604B2 JP2000286195A JP2000286195A JP4369604B2 JP 4369604 B2 JP4369604 B2 JP 4369604B2 JP 2000286195 A JP2000286195 A JP 2000286195A JP 2000286195 A JP2000286195 A JP 2000286195A JP 4369604 B2 JP4369604 B2 JP 4369604B2
Authority
JP
Japan
Prior art keywords
video object
video
buffer
data
audio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2000286195A
Other languages
Japanese (ja)
Other versions
JP2001160945A (en
Inventor
和彦 中村
徳夫 中谷
智之 岡田
英明 春元
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP26557499 priority Critical
Priority to JP11-265574 priority
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to JP2000286195A priority patent/JP4369604B2/en
Publication of JP2001160945A publication Critical patent/JP2001160945A/en
Application granted granted Critical
Publication of JP4369604B2 publication Critical patent/JP4369604B2/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Abstract

PROBLEM TO BE SOLVED: To provide an optical disk recorder, a reproducing device and a recording method that can readily realize seamless reproduction as to video objects recorded in real time, before and after each pause and discriminates whether seamless reproduction is available before the reproduction of the video objects. SOLUTION: Upon the receipt of a pause-release instruction, the optical disk recorder generates a video object which is generated immediately before it, a video object available of seamless reproduction and records them onto an optical disk. Furthermore, in the case that the video object and a video object immediately before are reproduced sequentially, a seamless flag SML- FLG denoting whether the seamless reproduction is available is generated and recorded in a VOB-TYPE in management information.

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a readable / writable optical disc, and a recording method and reproducing method thereof. In particular, the present invention relates to an optical disc recording apparatus, a reproducing apparatus, and a recording method for recording a video object (compressed audio / video data) that can be seamlessly reproduced even when a user performs a pause operation during recording.
[0002]
[Prior art]
In recent years, optical discs having a capacity of several GB have appeared in the field of rewritable optical discs where the upper limit was about 650 MB. For example, there is a DVD-RAM (Digital Video Disc-Random Access Memory).
DVD-RAM is expected to be used as a recording medium for audio / video data (AV data) in addition to computer data recording. In other words, magnetic tapes and video tape recorders (VTRs) are widely used as conventional representative AV data recording media and recording devices, but optical discs and optical disc recording / reproducing devices are expected as alternatives.
[0003]
An optical disk recording / playback apparatus used as a replacement for a stationary VTR receives a television broadcast, converts the received television signal into a video object, and records the video object on a DVD-RAM. More specifically, the optical disc recording / playback apparatus generates compressed video data (video elementary stream) and compressed audio data (audio elementary stream) from a television signal, and each of the compressed video data and compressed audio data has a fixed length. Video packs and audio packs are interleaved and recorded on the optical disc as video objects. Here, the video elementary stream and the audio elementary stream are generated in accordance with the MPEG (ISO / IEC 13818) standard.
[0004]
Usually, one video object is generated by one continuous recording in the optical disc recording / reproducing apparatus. Therefore, during the period from the user's recording start instruction to the recording end instruction, the optical disc recording / reproducing apparatus generates and records one video object.
[0005]
[Problems to be solved by the invention]
However, according to the conventional optical disk recording / reproducing apparatus, there is a problem that seamless reproduction of a video object cannot be easily realized when a pause (pause of recording) occurs during recording.
More specifically, when one video object is generated by one continuous recording, the optical disc recording / playback apparatus completes the video object by a pause instruction and records a new video object by a pause release instruction. It will be. . That is, each video object is recorded as one video object in each period from the recording start instruction to the pause instruction, from the pause release to the pause instruction, and from the pause release to the recording end operation.
[0006]
In this case, when the video object recorded up to the pause instruction and the next video object recorded from the pause release are played in order, seamless playback cannot be guaranteed and the following problem may occur.
First, in the optical disc recording / reproducing apparatus, when encoding video data, the video elementary stream is stored in the buffer assuming a video virtual buffer so that the video elementary stream does not overflow and underflow in the video input buffer of the reproducing apparatus. The data size to be simulated is simulated. Similarly, audio data encoding is simulated assuming an audio virtual buffer. Continuous playback of a single video object enables seamless playback. However, when playback is switched to a new video object due to a pause, overflow and underflow may occur in the playback device.
[0007]
In view of the above problems, an object of the present invention is to provide an optical disc recording apparatus, an optical disc reproduction apparatus, and an optical disc recording method that can easily realize seamless reproduction of a video object recorded in real time before and after a pause.
Another object of the present invention is to provide an optical disc recording device, an optical disc playback device, and an optical disc recording method that can determine whether or not seamless playback is possible before playing a video object.
[0008]
[Means for Solving the Problems]
An optical disk recording apparatus that solves the above-described problem is a receiving unit that receives a user operation including a recording start instruction, a recording end instruction, a pause instruction, and a pause release instruction;
When a video object is generated by compressing and encoding audio-video data during a period from a recording start instruction or a pause release instruction until a pause instruction or a recording end instruction is received, and the pause release instruction is received Encoding means for generating a video object that can be seamlessly played with the video object generated immediately before,
Generation means for generating a seamless flag indicating whether seamless playback is possible when the video object and the immediately preceding video object are sequentially played each time a video object is generated;
A recording means for recording the video object generated by the encoding means and the seamless flag generated by the generating means on the optical disc;
Is provided.
[0009]
Here, the seamlessly playable video object does not cause overflow and underflow in the video buffer in the playback device that temporarily holds the compressed video data, and is included in the seamlessly playable video object. Are input to the video buffer in succession to the immediately preceding video object in the playback device.
[0010]
Here, when the seamless flag indicates that seamless playback is possible, the decoder in the playback device starts playback of the video object without resetting the internal state of the decoder after playback of the previous video object is completed.
Here, the generation means outputs the last system clock reference value of the video object that has been generated by the pause instruction and the first system clock reference value of the video object that has been generated by the pause release instruction from the encoding means. Acquired,
The recording unit may be configured to record the last system clock reference value, the first system clock reference value, and the seamless flag on the optical disc as video object information.
[0011]
According to this configuration, the playback apparatus can smoothly perform special playback such as reverse playback by referring to the system clock reference in the video object information before playing back the video object.
Here, the encoding means replaces the audio data divided by the pause instruction and pause release with a period of time immediately before or after the division and shorter than the audio frame with silence data, and then compresses the compressed audio data. You may comprise so that it may produce | generate.
[0012]
The optical disk playback apparatus of the present invention is a playback apparatus for playing back a video object recorded on an optical disk,
The optical disc records a plurality of video objects and a plurality of video object information,
The video object includes compressed video data and compressed audio data;
The video object information corresponds to a video object, includes a seamless flag,
The seamless flag indicates whether seamless playback is possible when the corresponding video object and the preceding video object are played sequentially.
The optical disc playback apparatus comprises:
Read means for reading out video object information and the corresponding video object from the optical disc,
Decoding means for generating audio-video data by decoding the video object read by the reading means;
Control means for controlling seamless reproduction by the decoding means based on the seamless flag in the video object information read by the reading means;
Is provided.
[0013]
Here, the decoding means is
Separation means for separating compressed video data and compressed audio data from the video object read by the reading means;
A video buffer that temporarily holds the separated compressed video data;
An audio buffer that temporarily holds the separated compressed audio data;
A first decoder for decoding the compressed video data of the video buffer;
A second decoder for decoding the compressed audio data of the video buffer;
With
When the seamless flag corresponding to the video object to be played next indicates that seamless playback is possible, the control means does not initialize the video buffer and the audio buffer when switching from the current video object to the next video object. A configuration may be adopted in which the next video object read by the reading unit is controlled to be supplied to the decoding unit.
[0014]
Further, the optical disk recording method of the present invention includes:
A reception step for receiving a user operation including a recording start instruction, a recording end instruction, a pause instruction, and a pause release instruction;
When a video object is generated by compressing and encoding audio-video data during a period from a recording start instruction or a pause release instruction until a pause instruction or a recording end instruction is received, and the pause release instruction is received An encoding step for generating a video object that can be seamlessly played with the video object generated immediately before,
A first recording step of recording the video object generated by the encoding means on the optical disc;
A generation step of generating video object information including a seamless flag indicating whether seamless playback is possible when the video object and the immediately preceding video object are sequentially played each time a video object is generated;
And a second recording step of recording the video object information generated by the generating means on the optical disc.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
(1) Overview of optical disk recording and playback device
The case where the optical disc recording / reproducing apparatus 1 in the embodiment of the present invention is used for replacing a stationary VTR will be described. As shown in FIG. 1, an optical disc recording / reproducing apparatus is connected to an antenna (not shown) and a television receiver 2 and is a video / audio signal included in a television signal received from the antenna or a video signal inputted from an input terminal. Is compressed and encoded to generate compressed video / audio data (hereinafter referred to as a video object, abbreviated as VOB) in real time and record it on the optical disc, and reproduce the VOB recorded on the optical disc.
[0016]
This optical disc recording / reproducing apparatus generates one video object in real time during a period from a recording start instruction or a pause release instruction by a user until a pause instruction or a recording end instruction is received, in particular, a pause instruction and a pause release instruction. Two video objects generated before and after are generated so as to guarantee seamless reproduction and recorded on the optical disc. Further, each time a video object is generated, a seamless flag and seamless information are generated and recorded on the optical disc as management information.
[0017]
Here, the seamless flag is a flag indicating whether or not seamless reproduction is possible. The seamless information includes the last SCR (System Clock Reference) of the immediately preceding video object and the first SCR of the video object. The seamless flag and seamless information are referred to during reproduction.
(2) Optical disk configuration
(2.1) Physical configuration of optical disk
The optical disk in the embodiment of the present invention will be described by taking a DVD-RAM as an example. The physical structure of the DVD-RAM is disclosed in detail in Japanese Patent Application Laid-Open No. 8-7282, which discloses a method for recording on both lands and groups, and Japanese Patent Application Laid-Open No. 7-93873, which discloses a zone CLV (constant linear velocity). Therefore, it will not be described in detail here.
[0018]
(2.2) Logical structure of optical disk (DVD-RAM)
FIG. 2 is a diagram showing a lead-in area, a data area, a lead-out area provided in the area of the optical disc, and an outline of the file structure recorded in the data area.
In the figure, in the lead-in area, a reference signal necessary for stabilizing servo control in the optical disc recording / reproducing apparatus, an identification signal with other media, and the like are recorded in the head portion (innermost peripheral portion). ing. A data area exists after the lead-in area. In the data area, a file storing VOB and management information is recorded. There is a lead-out area at the end (outermost part). In this area, a reference signal similar to the lead-in area is recorded.
[0019]
Information for the file system called volume information is recorded at the head of the data area. Since the file system is publicly known, it will be omitted. In the same figure, a configuration example of directories and files read / written through the file system is shown.
In this file structure, a DVD_RTAV (DVD_Real Time Audio Visual) directory for storing all files handled by the optical disc recording / playback apparatus is provided immediately under the ROOT directory. Files stored in the DVD_RTAV directory are roughly classified into two types: one management information file and one or more AV files for VOB recording.
[0020]
In the figure, VR_MANGR. As an AV file, the IFO receives VR_MOVIE. VRO is shown. VR_MOVIE. A VRO contains one or more video objects for recording moving images (including audio).
(2.2.1) AV file
3 shows the VR_MOVIE. It is a figure which shows the data structure of a VRO file.
[0021]
As shown in the figure, VR_MOVIE. In the VRO file, VOBs # 1 to #N are arranged. N is a number of 1 or more.
Each VOB is composed of a plurality of VOBUs. The VOBU includes at least one GOP (Group Of Picture) defined by the MPEG video standard ISO / IEC (13818-2), and is composed of a pack string of a fixed size (2 kbytes). The pack includes a video pack (V_PCK) and an audio pack (A_PCK).
[0022]
V_PCK includes video data.
A_PCK includes audio data. The audio data is data encoded by MPEG audio, Dolby AC3, linear PCM, or the like. V_PCK and A_PCK are interleaved within the VOBU.
Each pack includes SCR, DTS (Decode Time Stamp), and PTS (Presentation Time Stamp) as various time stamps. The SCR indicates the time when the pack should be taken out of the track buffer and input to the video buffer during playback. The DTS indicates the time at which the pack data is to be taken out of the video buffer and input to the video decoder. The PTS indicates a time at which the decoded data of the pack is to be displayed or output as audio. However, since the audio data decoding process time can be ignored as compared with the video data decoding process time, the PTS is also used as the DTS in the audio pack.
[0023]
(2.2.2) Management file
4 shows the management information file VR_MANGR. It is a figure which shows the data structure of IFO hierarchically.
As shown in FIG. The IFO is information also called RTR_VMG (Real Time Recording Video Manager), and includes a VOB STI (stream information) table, a VOBI (VOB Information) table, and a PGCI (program chain information) table.
[0024]
The VOB_STI table includes “VOB stream information (VOB_STI in the figure)” corresponding to the VOB on a one-to-one basis or one-to-one basis. The VOB stream information includes video attributes and audio attributes of the VOB.
The VOBI table includes “Number of VOBI's” indicating the total number of VOB information (VOBI) in this table, and “VOBI # 1 to #N”. N is indicated by the VOBI number.
[0025]
The VOB information is information related to the VOB that corresponds to the VOB on a one-to-one basis. ”,“ VOB recording time (VOB_REC_TIME) ”,“ VOB stream information number (VOB_STIN) ”, and“ time map information (TMAPI) ”.
[0026]
The VOB type (VOB_type) includes a “seamless flag (SML_FLG)” indicating whether or not seamless playback is possible when the corresponding VOB is played in order from the immediately preceding VOB. The seamless flag is set to “1” (seamless playback is possible) for the video object generated by the user's pause release instruction, and “0” (seamless playback) for the video object generated by the user's recording start instruction. Is not possible).
[0027]
The seamless information (SMLI) is valid information when the seamless flag is “1”, and is seamless information including the last SCR (PREV_VOB_LAST_SCR) of the immediately preceding VOB and the first SCR of the video object. These SCRs can be used when switching video objects in fast forward playback, reverse playback, and the like.
[0028]
The VOB start PTM (VOB_start_PTM) and the VOB end PTM (VOB_end_PTM) indicate the start time and end time of the presentation (display and audio output) of the VOB, respectively. The VOB recording time (VOB_REC_TIME) indicates the VOB recording time.
The VOB stream information number (VOB_STIN) is the number of VOB stream information corresponding to this video object.
[0029]
The time map information (TMAPI) includes a time map in which the VOB playback time and the optical disc recording position are associated with each other in VOBU units.
The PGCI table is a table on which program chain information (PGCI) indicating the playback order of the VOB or the playback order of an arbitrary playback section of the VOB is placed. PGCI # 1 in the figure includes cell information (CellI # 1 to CellI # J). Each cell represents an arbitrary playback section of the VOB specified by the VOB_ID as a combination of a start time (Cell_Start_PTM) and an end time (Cell_End_PTM). Reproduction sections of VOBs represented by cells # 1 to #J are reproduced in the order of cell arrangement.
[0030]
For example, when VOB # 1 and # 2 are generated by a series of operations such as recording start, pause instruction, pause release instruction, and recording end by the user in the optical disc recording / reproducing apparatus, the following PGCI # 1 is generated. The PGCI # 1 has cell information (CellI # 1) having the same values as the first playback time (VOB_Start_PTM) and the last playback time (VOB_End_PTM) of VOB # 1 and Cell_End_PTM, and the first playback of VOB # 2. Cell information (CellI # 2) having Cell_Start_PTM and Cell_End_PTM as the same value as the time (VOB_Start_PTM) and the last playback time (VOB_End_PTM) is included. That is, PGC # 1 sets the playback order of all sections of VOB # 2 next to all sections of VOB # 1.
[0031]
In this case, since VOB # 1 and # 2 are the video objects before and after pause and release of the pause, the seamless flag is set to “1” in the VOB information (VOBI # 2) of VOB # 2, which is more effective. Seamless information is set.
(3) Optical disk recording / playback device
FIG. 5 is a block diagram showing a configuration of a main part of the optical disc recording / reproducing apparatus shown in FIG.
[0032]
As shown in the figure, the optical disc recording / reproducing apparatus includes a user interface unit 101, a system control unit 102, an input unit 103, an encoder unit 104, an output unit 105, a decoder unit 106, a track buffer 107, and a drive 108.
A user interface unit (U / I in the figure) 101 has an operation panel and a remote control light receiving unit, and accepts a user operation from the operation panel and a user operation from the remote control as shown in FIG. User operations include instructions such as recording start, recording end, pause, pause release, and playback.
[0033]
When the system control unit 102 receives an instruction to start recording, end recording, pause, pause release from the user interface unit 101, the system control unit 102 notifies the encoder unit 104 to that effect, and receives an instruction to start playback or end playback. This is notified to 106.
Specifically, the system control unit 102 notifies the encoder unit 104 of the start of recording, thereby causing the encoder unit 104 to start generating a new video object.
[0034]
The system control unit 102 notifies the encoder unit 104 of the end of recording, thereby causing the encoder unit 104 to complete the generation of the video object. Further, based on the encoding information obtained from the encoder unit 104, the system control unit 102 VOBI and VOB_STI are generated and recorded on the optical disc. The encoding information here includes whether or not seamless playback is possible, if possible, the value of the last SCR (PREV_VOB_LAST_SCR) of the immediately preceding VOB, and the value of the first SCR (VOB_FIRST_SCR) of the video object that has been generated.
[0035]
Further, the system control unit 102 notifies the encoder unit 104 of a pause instruction, thereby causing the encoder unit 104 to complete the generation of the video object and save (that is, not reset) the internal state. Furthermore, VOBI and VOB_STI are generated based on the encoding information from the encoder unit 104 and recorded on the optical disc.
[0036]
The system control unit 102 notifies the encoder unit 104 of the release of the pause, thereby causing the encoder unit 104 to start generating a new video object with the internal state stored in the encoder unit 104 as an initial state. In this case, since the encoder unit 104 takes over the last internal state in which the generation of the immediately preceding video object has been completed, the newly generated video object can be seamlessly reproduced.
[0037]
The input unit 103 outputs video data and audio data obtained by demodulating the broadcast signal to the encoder unit 104.
The encoder unit 104 generates a VOB composed of V_PCK and A_PCK by compressing the video signal and the audio signal input from the input unit 103 under the control of the system control unit 102. When receiving the pause instruction notification, the encoder unit 104 completes generation of the video object and saves the internal state without resetting. When receiving the pause release notification, the encoder unit 104 sets the stored internal state as the initial state. Start generating a video object (that is, take over the internal state).
[0038]
The track buffer 107 temporarily stores the VOB generated by the encoder unit 104 during recording, and temporarily stores the VOB read from the DVD-RAM during reproduction.
The drive 108 is equipped with a DVD-RAM, performs servo control and rotation control during recording / reproduction, writes the VOB stored in the track buffer 107 to the DVD-RAM through an optical pickup, and is recorded on the DVD-RAM. The VOB is read through the optical pickup and stored in the track buffer 107. Read / write to the DVD-RAM is actually performed in units of ECC (Error Correcting Code) blocks (16 sectors = 2 Kbytes × 16 packs), but is omitted because it is not related to the present invention.
[0039]
Under the control of the system control unit 102, the decoder unit 106 decompresses the VOB read from the DVD-RAM and input via the track buffer 107, and generates a video signal and an audio signal.
The output unit 105 converts the video signal and audio signal input from the decoder unit 106 from digital to analog, and outputs the analog signal to a television receiver or the like.
[0040]
(3.1) Encoding part
FIG. 6 is a block diagram showing a detailed configuration of the encoder unit 104 in FIG. As shown in the figure, the encoder unit 104 includes a video encoder 1501, a buffer 1502, an audio encoder 1503, an audio encode buffer 1504, a control information buffer 1505, a system time clock unit (abbreviated as STC unit) 1506, an encoder control unit 1507, and a system encoder. 1508. The system encoder 1508 further includes a virtual playback time counter 1601, a video packer 1602, a virtual decoder buffer 1603, an audio packer 1604, and a virtual decoder buffer 1605.
[0041]
The video encoder 1501 has an internal video input buffer (not shown), takes video data input from the input unit 103 into the input buffer, and encodes (compresses) the video data in the input buffer in accordance with the MPEG2 standard. The compressed video data is stored in the video encode buffer 1502.
The audio encoder 1503 has an audio input buffer (not shown) inside, takes audio data input from the input unit 103 into the input buffer, encodes (compresses) the audio data in the input buffer, and compresses the audio data into the audio encode buffer 1504 Stores audio data.
[0042]
The STC unit 1506 generates a clock signal (system time clock) that is the basis of the encoding operation.
The encoder control unit 1507 controls the encoding operation of the entire encoder unit 104. The encoding operation starts according to the recording start or pause release notification from the system control unit 102 and ends the video object according to the recording end or pause notification. However, when a pause notification and a pause release notification are received, an encoding operation is performed that takes over the internal state before and after the pause.
[0043]
Specifically, when notified of the start of recording, the encoder control unit 1507 controls the video encoder 1501, the audio encoder 1503, and the system encoder 1508 so as to start generating a new video object. In this case, the various buffers in the encoder unit 104 may be in a reset state as an initial state.
[0044]
When the end of recording is notified, the encoder control unit 1507 controls the video encoder 1501, the audio encoder 1503, and the system encoder 1508 so that the generation of the video object is completed. In this case, after completion of the generation of the video object, various buffers in the encoder unit 104 may be reset.
[0045]
When notified of the pause, the encoder control unit 1507 controls the video encoder 1501, the audio encoder 1503, and the system encoder 1508 so that the generation of the video object is completed. Control is performed so that the buffer 1504 and the virtual decoder buffers 1603 and 1605 are stored without being reset. As a result, the internal state of the encoder unit 104 is saved.
[0046]
When receiving the pause release instruction, the encoder control unit 1507 uses the video encoder 1501, the audio encoder 1503, and the system so as to start generating a new video object with the internal state stored in the encoder unit 104 as an initial state. The encoder 1508 is controlled. Thereby, a video object capable of seamless playback is generated.
[0047]
Also, the encoder control unit 1507 adjusts the compression rate of the video encode buffer 1502 according to the occupation amounts of the virtual decoder buffers 1603 and 1605. This adjustment is made to prevent the video and audio buffers in the decoder from overflowing and underflowing during playback.
The system encoder 1508 extracts compressed video data and compressed audio data for the payload size of the pack (or packet) from the video encode buffer 1502 and the audio encode buffer 1504, respectively, creates V_PCK and A_PCK, and interleaves the created packs As a result, VOBUs are sequentially created and output to the track buffer 1407.
[0048]
(3.1.1) System encoder
In the system encoder 1508 of FIG. 6, the virtual reproduction time counter 1601 is based on the STC generated by the STC unit 1506, and the time stamp (SCR, DTS (Decode Time Stamp), PTS (Presentation Time Stamp) given to each pack. ) Etc.) is generated as a reference (virtual playback time). Here, DTS is a time stamp indicating the time when the decoder unit 106 starts decoding in the reproduction operation, and PTS is a time stamp indicating the time when the video data or audio data decoded in the reproduction operation is output or displayed.
[0049]
The video packer 1602 extracts compressed video data from the video encode buffer 1502, and sequentially generates V_PCK on which the extracted compressed video data is placed. At this time, the type stamp is determined so as not to cause overflow and underflow in the virtual decoder buffer 1603.
The virtual decoder buffer 1603 is a virtual buffer for simulating the data occupation amount of a buffer (that is, a video buffer in the decoder) that temporarily holds compressed video data during a reproduction operation.
[0050]
The compressed audio data is extracted from the audio packing unit 1604 and the audio encode buffer 1504, and A_PCK on which the extracted compressed audio data is placed is sequentially generated. At that time, the type stamp is determined so as not to cause overflow or underflow in the virtual decoder buffer 1605.
[0051]
The virtual decoder buffer 1605 is a virtual buffer for simulating the data occupation amount of a buffer (that is, an audio buffer in the decoder) that temporarily holds compressed audio data during a reproduction operation.
The interleaving unit 1607 sequentially takes out the packs having the smallest SCR value from the packs generated by the video packing unit 1602 and the audio packing unit 1604, and sets the pack sequence arranged in the order of extraction to the track buffer 1407. Output to.
[0052]
(4) Recording operation before and after pause
FIG. 7 is a flowchart showing details of the pause processing by the encoder control unit 1507. The pause process of FIG. 7 will be described together with an explanatory diagram showing the internal operation before and after the pause of the encoder unit 104 shown in FIG.
As shown in FIG. 7, when the encoder control unit 1507 is notified of the pause from the system control unit 102 during the recording operation, first, the video data input from the input unit 103 to the input buffer in the video encoder 1501 is changed to a picture break. The audio data input from the input unit 103 to the input buffer in the audio encoder 1503 is stopped (step 71), and the encoding operation of the audio encoder 1503 is stopped at the break of the audio frame (step 72).
[0053]
In FIG. 9, at this point, the audio encoder 1503 stops the encoding operation when the audio frame f3 of the input buffer is encoded into the compressed audio data a3.
As a result, the audio buffer f4 and a part of the audio frame f51 are held in the input buffer in the audio encoder 1503. The audio encode buffer 1504 stores compressed audio data... A1, a2, a3. Is retained.
[0054]
On the other hand, up to this point, picture data B8 and B9 are held in the input buffer in the video encoder 1501.
In this state, the video encoder 1501 completes encoding of the video data held in the input buffer. In FIG. 9, the video encoder 1501 completes encoding up to pictures P9, B7, and B8.
[0055]
When the video encoder 1501 completes encoding of the picture data remaining in the input buffer (step 73), the encoder control unit 1507 stops the encoding operation of the video encoder 1501 (step 74).
The compressed video data encoded until the video encoder 1501 is stopped is temporarily stored in the video encode buffer 1502. The system encoder 1508 extracts compressed video data from the video encode buffer 1502 until the video encode buffer 1502 becomes empty, and multiplexes the compressed video data together with the compressed audio data as a video object.
[0056]
When the video encoding buffer 1502 becomes empty (step 75), the encoder control unit 1507 stops the operation of the system encoder 1508 (step 76). Thereby, the generation of the video object is completed.
After that, the encoder control unit 1507 maintains the state of the various buffers without resetting them (step 77), and notifies the system control unit 102 of the encoded information of the video object that has been generated (step 78). The various buffers referred to here are: (a) an input buffer in the video encoder 1501, (b) a video encode buffer 1502, (c) a virtual decoder buffer 1603, (d) an input buffer in the audio encoder 1503, (e) an audio. An encoding buffer 1504 and (f) a virtual decoder buffer 1605 are referred to.
[0057]
In FIG. 9, when the operation of the system encoder 1508 is stopped, (a) and (b) are empty, (c) and (f) are occupying amounts, and (d) is audio frame data. The state where f4 and a part f51 of the audio frame are held, (e) is the state where the compressed audio frame data a1, a2, and a3 are held. This state continues until the pause is notified.
[0058]
FIG. 8 is a flowchart showing details of pause release processing by the encoder control unit 1507.
As shown in the figure, the encoder control unit 1507, when notified of pause release from the system control unit 102 in a paused state, does not reset the various buffers (disables reset signals to the various buffers). In the saved state (step 81), video data input from the input unit 103 to the input buffer in the video encoder 1501 and audio data input from the input unit 103 to the input buffer in the audio encoder 1503 are resumed ( Further, the encoding operation of the video encoder 1501, the audio encoder 1503, and the system encoder 1508 is resumed (step 83).
[0059]
After resuming the encoding operation, the audio encoder 1503 suppresses the audio level and encodes the uncorrelated audio frame (step 84). In the case of FIG. 9, the audio frame having no correlation is an audio frame composed of f51 and f52 whose continuity is lost due to the pause. For example, the audio encoder 1503 performs encoding after replacing the entire audio frame composed of f51 and f52 or one of f51 and f52 with silence data. As a result, since the audio level of the audio frame whose correlation has been lost due to the pause is suppressed, the generation of noise (popping sound) during reproduction can be eliminated.
[0060]
In this way, generation of a new video object is started taking over the state when paused.
Further, the encoder control unit 1507 generates and holds a seamless flag and seamless information as a part of encoding information to be notified when a new video object is completed (step 85).
[0061]
In FIG. 9, by the pause release, the audio frame data f4 in the above (d) and the part f51 of the audio frame are encoded by the audio encoder 1503, and the compressed audio frame data a1, a2, a3 in the above (e) are displayed. Are interleaved in the video object by the system encoder 1508. The encoding operations of the video encoder 1501 and the audio encoder 1503 are controlled by the encoder control unit 1507 with the occupancy stored in the (c) virtual decoder buffer 1603 and (d) virtual decoder buffer 1605 as initial values. Therefore, the newly generated video object can be seamlessly reproduced with respect to the video object before the pause.
[0062]
(5) Decoder part
FIG. 10 is a block diagram showing a detailed configuration of the decoder unit 106 in FIG. As shown in the figure, the decoder unit 106 includes a demultiplexer 1702, a video buffer 1703, a video decoder 1704, a reorder buffer 1705, a switch 1706, an audio buffer 1707, an audio decoder 1708, and a control information output unit 1709.
[0063]
The demultiplexer 1702 receives the VOB from the track buffer 1407 during the reproduction operation, and sequentially stores the pack payload (packet) in the video buffer 1703 and the audio buffer 1707 according to the type of each pack in the VOB. Storage in the video buffer 1703 and the audio buffer 1707 is performed when the SCR in the pack matches the STC.
[0064]
The video decoder 1704 takes out the packet from the video buffer 1703 and decodes it. The packet is extracted when the DTS (PTS in the case of an audio packet) described in the first packet in the video buffer 1703 matches the STC.
The reorder buffer 1705 is a buffer for switching the output order of the decoded data from the coding order to the display order in units of pictures.
[0065]
The switch 1706 outputs the decoded data from the video decoder 1704 and the switch 1706 to the output unit 1405 in units of pictures. This output is made when the PTS described in the packet matches the STC.
The audio decoder 1708 extracts the packet from the audio buffer 1707 and decodes it. The packet is extracted when the PTS described in the first packet in the audio buffer 1707 matches the STC. The decoding result is immediately output to the output unit 1405.
[0066]
(5.1) Playback operation
When receiving an instruction to start playback, the system control unit 102 refers to the PGCI shown in FIG. 4 and instructs the decoder unit 106 to play the video object indicated by the cell information. For example, when the PGCI designates all of VOB # 1 and all of VOB # 2 as playback paths in order, the system control unit 102 first notifies the decoder unit 106 of a playback instruction for VOB # 1, and the playback is performed. Immediately before completion, the decoder unit 106 is notified of a playback instruction for VOB # 2.
[0067]
Prior to notification of the playback instruction, the system control unit 102 refers to the VOBI corresponding to the video object to be played back, and initializes and plays back the decoder unit 106 if the seamless flag included in the VOBI is “0”. If the seamless flag included in VOBI is “1” and another video object is already being played back, the start of playback is notified without initializing the decoder unit 106. The initialization here means reset of the video buffer 1703, the audio buffer 1707, and the reorder buffer 1705.
[0068]
When the seamless flag is “1”, the system control unit 102 performs playback in a state where the above-mentioned reset has not been performed after the end of the immediately preceding video object is input to the decoder unit 106 after notification of playback start. Control to supply the video object to be. As a result, the decoder unit 106 plays back seamlessly when video objects are switched.
[0069]
The above playback shows playback at normal speed. In the case of special playback such as fast-forward playback or rewind playback, the system control unit 102 realizes special playback by partially playing back the VOBU unit (for example, playing back only I pictures). . At this time, the seamless information when the seamless flag is “1” can be used in special reproduction. For example, in rewind playback, the STC of the decoder unit 106 can be switched before reading out the immediately preceding VOB by referring to the last SCR of the immediately preceding VOB.
[0070]
(6) Other
In the above embodiment, the stationary type is described as an example of the optical disc recording / reproducing apparatus, but a portable video camera (cam recorder) type may be used. In this case, the input unit 103 includes a microphone and a camera, and the output unit 105 includes a small liquid crystal panel and a small speaker.
[0071]
Although the DVD-RAM has been described as an example of the optical disk, other writable optical disks may be used. Further, the recording may be performed on a hard disk instead of the optical disk.
In the operation example shown in FIG. 9, the audio encoder 1503 stops the encoding operation while leaving the audio data f4 and f51 in the internal input buffer. However, the encoding operation is performed after the audio data f4 in the input buffer is encoded. May be stopped. In this case, after the pause instruction, only data less than one audio frame remains in the input buffer, and the audio encoding buffer 1504 holds the compressed audio data encoded by the audio frame f4. Become.
[0072]
In the above embodiment, in order to suppress the level of an audio frame (for example, f51 and f52 in FIG. 9) that has been divided by a pause and has no correlation, the audio encoder 1503 silences one of the divided audio data or both. Encoding is performed after replacing with data. Instead of this, the following may be used. In other words, a mute circuit is added between the input unit 103 and the audio encoder 1503 so that the mute circuit is muted for a period shorter than the audio frame (for example, several mS) from the time when the encoding operation of the audio encoding buffer 1504 is resumed by the pause release. In this way, silence data is input to the audio encoder 1503 by the mute circuit during the above period. As a result, the audio frame divided by the pause does not generate noise (sounds) during reproduction.
[0073]
Further, the mute circuit may be muted for a short period from immediately before the stop of the encoding operation of the audio encoder 1503 by the pause instruction until the stop. Alternatively, it may be configured to mute both immediately before stopping the encoding operation and immediately after restarting the encoding operation.
[0074]
【The invention's effect】
The optical disc recording apparatus of the present invention comprises a receiving means for receiving a user operation including a recording start instruction, a recording end instruction, a pause instruction, and a pause release instruction;
When a video object is generated by compressing and encoding audio-video data during a period from a recording start instruction or a pause release instruction until a pause instruction or a recording end instruction is received, and the pause release instruction is received Encoding means for generating a video object that can be seamlessly played with the video object generated immediately before,
Generation means for generating a seamless flag indicating whether seamless playback is possible when the video object and the immediately preceding video object are sequentially played each time a video object is generated;
A recording means for recording the video object generated by the encoding means and the seamless flag generated by the generating means on the optical disc;
Is provided.
[0075]
Here, the seamlessly playable video object does not cause overflow and underflow in the video buffer in the playback device that temporarily holds the compressed video data, and is included in the seamlessly playable video object. Are input to the video buffer in succession to the immediately preceding video object in the playback device.
[0076]
When the seamless flag indicates that seamless playback is possible, the decoder in the playback device starts playback of the video object without resetting the internal state of the decoder after playback of the previous video object is completed.
According to this configuration, the video object generated before and after the user pause instruction and pause release during recording can be recorded in real time so that seamless playback is possible. It is possible to determine whether seamless playback is possible by referring to the seamless flag before playing the video object.
[0077]
Here, the generation means outputs the last system clock reference value of the video object that has been generated by the pause instruction and the first system clock reference value of the video object that has been generated by the pause release instruction from the encoding means. Acquired,
The recording unit may be configured to record the last system clock reference value, the first system clock reference value, and the seamless flag on the optical disc as video object information.
[0078]
According to this configuration, the playback apparatus can smoothly perform special playback such as reverse playback by referring to the system clock reference in the video object information before playing back the video object.
Here, the encoding means replaces the audio data divided by the pause instruction and pause release with a period of time immediately before or after the division and shorter than the audio frame with silence data, and then compresses the compressed audio data. You may comprise so that it may produce | generate.
[0079]
According to this configuration, the encoding means generates compressed audio data after replacing the above period with silence data, thereby eliminating the continuous mixing of uncorrelated data in audio frames that are divided by pauses. Thus, noise during playback can be eliminated.
The optical disk playback apparatus of the present invention is a playback apparatus for playing back a video object recorded on an optical disk,
The optical disc records a plurality of video objects and a plurality of video object information,
The video object includes compressed video data and compressed audio data;
The video object information corresponds to a video object, includes a seamless flag,
The seamless flag indicates whether seamless playback is possible when the corresponding video object and the preceding video object are played sequentially.
The optical disc playback apparatus comprises:
Read means for reading out video object information and the corresponding video object from the optical disc,
Decoding means for generating audio-video data by decoding the video object read by the reading means;
Control means for controlling seamless reproduction by the decoding means based on the seamless flag in the video object information read by the reading means;
Is provided.
[0080]
According to this configuration, it is possible to determine whether or not seamless playback is possible by referring to the seamless flag before playing a video object.
Here, the decoding means is
Separation means for separating compressed video data and compressed audio data from the video object read by the reading means;
A video buffer that temporarily holds the separated compressed video data;
An audio buffer that temporarily holds the separated compressed audio data;
A first decoder for decoding the compressed video data of the video buffer;
A second decoder for decoding the compressed audio data of the video buffer;
With
When the seamless flag corresponding to the video object to be played next indicates that seamless playback is possible, the control means does not initialize the video buffer and the audio buffer when switching from the current video object to the next video object. A configuration may be adopted in which the next video object read by the reading unit is controlled to be supplied to the decoding unit.
[0081]
According to this configuration, when it is determined that seamless playback is possible, when video objects are switched, playback is performed without initializing the video buffer and the audio buffer, so that seamless playback can be easily performed.
Here, the video object information includes a seamless flag, the last system clock reference value of the preceding video object, and the first system clock reference value of the corresponding video object,
The control means is configured to control to switch the system time clock in the decoding means according to the last system clock reference value and the first system clock reference value of the corresponding video object when the seamless flag indicates seamless playback. May be.
[0082]
According to this configuration, by referring to the system clock reference in the video object information before reproducing the video object, special reproduction such as reverse reproduction between the video objects can be smoothly performed.
Further, the optical disk recording method of the present invention includes:
A reception step for receiving a user operation including a recording start instruction, a recording end instruction, a pause instruction, and a pause release instruction;
When a video object is generated by compressing and encoding audio-video data during a period from a recording start instruction or a pause release instruction until a pause instruction or a recording end instruction is received, and the pause release instruction is received An encoding step for generating a video object that can be seamlessly played with the video object generated immediately before,
A first recording step of recording the video object generated by the encoding means on the optical disc;
A generation step of generating video object information including a seamless flag indicating whether seamless playback is possible when the video object and the immediately preceding video object are sequentially played each time a video object is generated;
And a second recording step of recording the video object information generated by the generating means on the optical disc.
[0083]
According to this configuration, the playback apparatus can smoothly perform special playback such as reverse playback by referring to the system clock reference in the video object information before playing back the video object.
[Brief description of the drawings]
FIG. 1 shows an appearance of an optical disk recording / reproducing apparatus.
FIG. 2 is a diagram showing a lead-in area, a data area, a lead-out area provided in the area of the optical disc, and an outline of a file structure recorded in the data area.
3 is a diagram of VR_MOVIE. It is a figure which shows the data structure of a VRO file.
4 is a management information file VR_MANGR. It is a figure which shows the data structure of IFO hierarchically.
5 is a block diagram showing a configuration of a main part of the optical disc recording / reproducing apparatus shown in FIG. 1. FIG.
6 is a block diagram showing a detailed configuration of an encoder unit 104 in FIG.
FIG. 7 is a flowchart showing details of pause processing by an encoder control unit 1507;
FIG. 8 is a flowchart showing details of pause release processing by an encoder control unit 1507;
9 shows an internal operation before and after a pause of the encoder unit 104. FIG.
10 is a block diagram showing a detailed configuration of a decoder unit 106 in FIG. 5. FIG.
[Explanation of symbols]
1 Optical disk recording and playback device
2 Television receiver
101 User interface part
102 System control unit
103 Input section
104 Encoder unit
105 Output section
106 Decoder unit
107 track buffer
108 drives
1405 Output unit
1407 Track buffer
1501 Video encoder
1502 buffer
1502 Video encoding buffer
1503 Audio encoder
1504 Audio encoding buffer
1505 Control information buffer
1506 STC Department
1507 Encoder control unit
1508 System encoder
1601 Virtual playback time counter
1602 Video packer
1603 Virtual decoder buffer
1604 Audio packer
1605 virtual decoder buffer
1607 Interleaving Club
1702 Demultiplexer
1703 Video buffer
1704 video decoder
1705 Reorder buffer
1706 switch
1707 audio buffer
1708 Audio decoder
1709 Control information output unit

Claims (8)

  1. A receiving means for receiving a user operation including a recording start instruction, a recording end instruction, a pause instruction, and a pause release instruction;
    When a video object is generated by compressing and encoding audio-video data during a period from a recording start instruction or a pause release instruction until a pause instruction or a recording end instruction is received, and the pause release instruction is received Encoding means for generating a video object that can be seamlessly played with the video object generated immediately before,
    Generation means for generating a seamless flag indicating whether seamless playback is possible when the video object and the immediately preceding video object are sequentially played each time a video object is generated;
    A video object generated by said encoding means, and a seamless flag generated by the generating means an optical disc recording apparatus comprising a recording means for recording on the optical disc,
    The encoding means includes
    When a pause instruction is accepted, the compressed audio data that has been generated in the video object and remains in the audio buffer without being multiplexed in the video object as the internal state of the encoding means at the time of completion is generated. And the virtual buffer size obtained by simulating the data size of the compressed video data input buffer in the playback device,
    An optical disc recording apparatus , wherein when a pause release instruction is received, generation of a new video object is started with the stored internal state as an initial state .
  2. The optical disk recording apparatus according to claim 1 ,
    The encoding means includes
    A first encoder that sequentially compresses and encodes video data;
    A first buffer for temporarily holding compressed video data compressed and encoded by the first encoder;
    A second encoder that sequentially compresses and encodes audio data;
    A second buffer for temporarily holding compressed audio data compression-encoded by the second encoder;
    The generated video objects by multiplexing the pack unit of fixed length and the compressed audio data from the second buffer and the compressed video data from the first buffer, during multiplexing, compressed video data and compressed audio from the video object Multiplexing means for giving time information for separating data in pack units,
    First virtual buffer means for simulating the data occupancy of the video buffer that temporarily holds the compressed video data in the playback device according to time information in pack units;
    Second virtual buffer means for simulating the data occupancy of the audio buffer that temporarily holds the compressed audio data in the playback device according to time information in pack units;
    If the pause instruction is accepted, each of said first encoder and stops the second encoder, and said first buffer, said second buffer, said first virtual buffer means, and said second virtual buffer means save state, if the pause release instruction is received, the encoding control unit for generating a seamless playable video object by resuming the first encoder and the second encoder saved state as an initial state An optical disc recording apparatus comprising:
  3. An optical disk recording apparatus according to claim 2 , wherein
    The second encoder generates compressed audio data after substituting silence data for a period immediately before or immediately after the division and shorter than the audio frame among the audio data divided by the pause instruction and pause release. An optical disc recording apparatus characterized by the above.
  4. An optical disk recording apparatus according to claim 3 , wherein
    The second encoder has a mute circuit capable of replacing input audio data with silence data, and is a period immediately before or immediately after the division with respect to the audio data divided by the pause instruction and the pause release. An optical disc recording apparatus, wherein the mute circuit is operated in a period shorter than an audio frame.
  5. A playback device for playing back video objects recorded on an optical disc,
    And a plurality of video objects and a plurality of video object information is recorded on the optical disc,
    Each video object contains compressed video data and compressed audio data,
    Each video object information corresponds to a different video object, includes a seamless flag corresponding to the video object ,
    Each seamless flag indicates whether seamless playback is possible when the corresponding video object and the preceding video object are played sequentially.
    The optical disc playback apparatus comprises:
    And the video object information from the optical disc, reading means for reading a video object corresponding thereto,
    By decoding the video Obuji object read by the reading means, a decoding means for generating audiovisual data,
    Based on the seamless flag in the video object information read by said reading means, an optical disk reproducing apparatus and control means for controlling the seamless reproduction by the decoding means.
  6. An optical disk reproducing apparatus according to claim 5 , wherein
    It said decoding means,
    Separating means for separating the compressed video data and compressed audio data from the video Obuji object read by the reading means,
    A video buffer that temporarily holds the separated compressed video data;
    An audio buffer that temporarily holds the separated compressed audio data;
    A first decoder for decoding compressed video data in the video buffer;
    A second decoder for decoding the compressed audio data in the audio buffer;
    Wherein if the seamless flag then corresponds to the video object to be reproduced indicates seamless playable, when switching from the current video object to a next video object, initializing the video buffer and the audio buffer without optical disk reproducing apparatus, characterized by controlling to supply the next video object read onto the read means to the decoding means.
  7. An optical disk reproducing apparatus according to claim 6 , wherein
    Each video object information, in addition to the seamless flag comprises preceding the last system clock reference values of the video object, the first system clock reference values of the corresponding video object,
    When the seamless flag indicates that seamless playback is possible, the control means controls to switch the system time clock inside the decoding means according to the last system clock reference value and the first system clock reference value of the corresponding video object. An optical disk reproducing apparatus characterized by the above.
  8. A reception step for receiving a user operation including a recording start instruction , a recording end instruction, a pause instruction, and a pause release instruction;
    When a video object is generated by compressing and encoding audio-video data during a period from a recording start instruction or a pause release instruction until a pause instruction or a recording end instruction is received, and the pause release instruction is received An encoding step for generating a video object that can be seamlessly played with the video object generated immediately before,
    A first recording step of recording the video object generated by the encoding step on an optical disc;
    A generation step of generating video object information including a seamless flag indicating whether seamless playback is possible when the video object and the immediately preceding video object are sequentially played each time a video object is generated;
    A second recording step of recording the video object information generated by the generating step on an optical disc;
    An optical disc recording method comprising :
    The seamlessly reproducible video object does not cause overflow and underflow in a video buffer in a playback device that temporarily stores compressed video data,
    The compressed video data included in the seamlessly reproducible video object is input to the video buffer continuously to the previous video object in the playback device,
    When the seamless flag indicates that seamless playback is possible, the decoder in the playback device starts playback of the video object without resetting the internal state after the playback of the previous video object is completed,
    In the encoding step, when the pause instruction is accepted, the generation of the video object is completed, and the compressed audio remaining in the audio buffer without being multiplexed in the video object as the internal state of the encoder at the completion time Save the data and the virtual buffer size obtained by simulating the data size of the compressed video data input buffer in the playback device,
    In the encoding step, when a pause release instruction is accepted, generation of a new video object is started with the stored internal state as an initial state .
JP2000286195A 1999-09-20 2000-09-20 Optical disc recording apparatus, reproducing apparatus and recording method suitable for seamless reproduction Expired - Fee Related JP4369604B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP26557499 1999-09-20
JP11-265574 1999-09-20
JP2000286195A JP4369604B2 (en) 1999-09-20 2000-09-20 Optical disc recording apparatus, reproducing apparatus and recording method suitable for seamless reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000286195A JP4369604B2 (en) 1999-09-20 2000-09-20 Optical disc recording apparatus, reproducing apparatus and recording method suitable for seamless reproduction

Publications (2)

Publication Number Publication Date
JP2001160945A JP2001160945A (en) 2001-06-12
JP4369604B2 true JP4369604B2 (en) 2009-11-25

Family

ID=26547048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000286195A Expired - Fee Related JP4369604B2 (en) 1999-09-20 2000-09-20 Optical disc recording apparatus, reproducing apparatus and recording method suitable for seamless reproduction

Country Status (1)

Country Link
JP (1) JP4369604B2 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3675465B2 (en) * 2003-10-29 2005-07-27 ソニー株式会社 Encoding control apparatus and encoding system
JP3675464B2 (en) 2003-10-29 2005-07-27 ソニー株式会社 Moving picture coding apparatus and moving picture coding control method
US7894711B2 (en) 2004-01-13 2011-02-22 Panasonic Corporation Recording medium, reproduction device, recording method, program, and reproduction method
KR101044936B1 (en) * 2004-02-07 2011-06-28 삼성전자주식회사 Method for controlling digital photographing apparatus, and digital photographing apparatus using the method
CN1922870B (en) * 2004-02-17 2010-05-05 松下电器产业株式会社 Recording medium and reproduction method
JP4177409B2 (en) 2004-04-07 2008-11-05 松下電器産業株式会社 Information recording apparatus and information recording method
CN101577804A (en) 2004-04-07 2009-11-11 松下电器产业株式会社 Information recording medium wherein stream convertible at high-speed is recorded, and recording apparatus and recording method therefor
WO2005099258A1 (en) 2004-04-07 2005-10-20 Matsushita Electric Industrial Co., Ltd. Information recording medium wherein stream convertible at high-speed is recorded, and recording apparatus and recording method therefor
JP4105206B2 (en) 2004-04-07 2008-06-25 松下電器産業株式会社 Information recording medium recording stream capable of high-speed conversion, recording apparatus and recording method therefor
KR20070007352A (en) * 2004-04-07 2007-01-15 마츠시타 덴끼 산교 가부시키가이샤 Information recording medium wherein stream convertible at high-speed is recorded, and recording apparatus and recording method therefor
JP4661443B2 (en) * 2005-08-05 2011-03-30 日本ビクター株式会社 Digital broadcast receiver
WO2007037287A1 (en) * 2005-09-27 2007-04-05 Pioneer Corporation Recording device and recording method for recording information on information recording medium having a plurality of layers
WO2007037286A1 (en) * 2005-09-27 2007-04-05 Pioneer Corporation Recording device and recording method for recording information in information recording medium having a plurality of layers
JP2007194735A (en) * 2006-01-17 2007-08-02 Toshiba Corp Digital information recording medium, digital information recording and reproducing apparatus, and recording and reproducing method thereof
JP2009135686A (en) 2007-11-29 2009-06-18 Mitsubishi Electric Corp Stereoscopic video recording method, stereoscopic video recording medium, stereoscopic video reproducing method, stereoscopic video recording apparatus, and stereoscopic video reproducing apparatus
JP5274359B2 (en) 2009-04-27 2013-08-28 三菱電機株式会社 3D video and audio recording method, 3D video and audio playback method, 3D video and audio recording device, 3D video and audio playback device, 3D video and audio recording medium
JP5627860B2 (en) 2009-04-27 2014-11-19 三菱電機株式会社 3D image distribution system, 3D image distribution method, 3D image distribution device, 3D image viewing system, 3D image viewing method, 3D image viewing device
JP5377589B2 (en) * 2011-07-07 2013-12-25 三菱電機株式会社 Reproduction method, reproduction apparatus, and optical disc
JP5383833B2 (en) * 2012-01-20 2014-01-08 三菱電機株式会社 Video information recording method, video information reproducing method, video information recording apparatus, video information reproducing apparatus, optical disc

Also Published As

Publication number Publication date
JP2001160945A (en) 2001-06-12

Similar Documents

Publication Publication Date Title
US6263150B1 (en) Video data editing apparatus, optical disc for use as a recording medium of a video data editing apparatus, and computer-readable recording medium storing an editing program
DE60005856T2 (en) Supplements to DVD control information for improved special playback operation
EP0738087B1 (en) Data recording medium having reproduction timing information, and system for reproducing record data by using the reproduction timing information
US6377518B1 (en) Method and device for recording real-time information
US6122436A (en) Optical disc, optical disc recording method and apparatus, and optical disc reproducing method and apparatus
US6560404B1 (en) Reproduction apparatus and method including prohibiting certain images from being output for reproduction
CN1118065C (en) Optical disc recording and reproducing apparatus and method
EP1254456B1 (en) Multimedia photo albums
US6553180B1 (en) Digital information recording/playback system and digital information recording medium
JP3356991B2 (en) Optical disc, a recording method, recording apparatus, reproducing method and apparatus
US6330392B1 (en) Video data editing apparatus and computer-readable recording medium storing an editing program
JP2747268B2 (en) Method and apparatus for reproducing data according to navigation data, a method and apparatus for recording data with navigation data on a recording medium
US20030165329A1 (en) Information recording medium, apparatus and method for recording or reproducing data thereof
KR100392050B1 (en) Digital recording system using variable recording rate
US7248783B2 (en) Recording medium, playback apparatus and recording/playback apparatus thereof
JP3631430B2 (en) Recording / playback device with automatic chapter creation function
US7373079B2 (en) Method and an apparatus for stream conversion, a method and an apparatus for data recording, and data recording medium
JP3356691B2 (en) Information recording medium and a recording method and reproducing method
CN1148754C (en) Information recording/reproduction system and method
US6795383B1 (en) Optical disk and apparatus and method of recording and reproducing data thereof
US7386223B2 (en) Method and an apparatus for stream conversion a method and an apparatus for data recording and data recording medium
CN1323559C (en) Changig playback speed for video presentation recorded in progressive frame structure format
CN1200425C (en) DVD-Rmo backwards compatible deffective sector management in recordable DVD media
CN100452857C (en) Data processing device
US7289723B2 (en) Digital recording system using variable recording rate

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070709

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090515

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090519

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090630

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090804

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090828

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120904

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130904

Year of fee payment: 4

LAPS Cancellation because of no payment of annual fees