WO2000076212A1 - Dispositif d'enregistrement/lecture, dispositif d'enregistrement/lecture de flux video mpeg, et support associe - Google Patents
Dispositif d'enregistrement/lecture, dispositif d'enregistrement/lecture de flux video mpeg, et support associe Download PDFInfo
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- WO2000076212A1 WO2000076212A1 PCT/JP2000/003620 JP0003620W WO0076212A1 WO 2000076212 A1 WO2000076212 A1 WO 2000076212A1 JP 0003620 W JP0003620 W JP 0003620W WO 0076212 A1 WO0076212 A1 WO 0076212A1
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- WIPO (PCT)
- Prior art keywords
- recording
- psi
- pcr
- mpeg
- transport stream
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- 125000004122 cyclic group Chemical group 0.000 claims description 54
- 238000001514 detection method Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 25
- 230000005540 biological transmission Effects 0.000 description 5
- 101000969688 Homo sapiens Macrophage-expressed gene 1 protein Proteins 0.000 description 1
- 102100021285 Macrophage-expressed gene 1 protein Human genes 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
- H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4341—Demultiplexing of audio and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
Definitions
- the present invention relates to a recording / reproducing apparatus, a video stream recording / reproducing apparatus of MPEG, and the like.
- MPEG Moving Picture Experts Group
- Fig. 10 (a) shows a general configuration example of a decoder for video and audio data (hereinafter referred to as AV data) compressed in the form of an MPEG transport stream (hereinafter, MPEG-TS).
- MPEG-TS MPEG transport stream
- the transport decoder 110 is means for receiving the input of the MPEG-TS.
- the AV data decoder 120 receives the output from the transport decoder 110, and the frame buffer 130 accesses the AV data decoder 120 to reproduce the AV data in a form that can be displayed on a display. It is a means for doing.
- Fig. 10 (b) is a diagram showing the decoding and playback procedure of MPEG-TS with time on the horizontal axis
- Fig. 11 (a) is a diagram showing the configuration of MPEG-TS. 1 1 (b) shows the configuration of the video stream in the AV bit stream.
- FIG. Hereinafter, the operation of decoding and reproducing MP EG-TS by the AV decoder 100 will be described with reference to the drawings.
- the transport decoder 110 detects a PAT from the input MPEG-TS as a step shown in (a) of FIG. 10 (b).
- the PAT Prograra Association Table
- PMT Program Mat Table
- the transport decoder 110 Upon detecting the PAT, the transport decoder 110 detects the PMT as a step shown in (mouth) of FIG. 10 (b), and further, in some cases, a step shown in (c) of FIG.
- detection of ID called CAT is performed.
- ID called CAT (Conditional Access Table)
- the AV data used for paid broadcasting is scrambled in advance so that general viewers without a dedicated decoder cannot view it, but CAT transmits decryption information to release the scrambling. This indicates the ID of the bucket to be used, and exists as a bucket in the MPEG-TS.
- PSI Program Specific Information
- the operation of 110 can be said to be detecting PSI.
- the MPEG-TS for which the PSI has been detected by the transport decoder 110 is input to the AV data decoder 120 as an AV bit stream.
- the AV data decoder 120 decodes the video stream from the input MPEG-T. As shown in Fig. 11 (b), in the bit stream of the MPEG, the video stream is composed of each video frame of I frame, B frame, and P frame. The first thing that needs to be decoded is the I-frame. Therefore, the AV data decoder 120 first detects the I frame as shown in the step (2) of FIG. 10 (b) and FIG. 11 (b). When the I-frame is detected, the video stream is decoded from the MPEG-TS with the I-frame as a starting point (step (e) in the figure). The decoded AV data is output to the frame buffer.
- the frame buffer receives the input of AV data from the AV data decoder, accumulates a certain amount of the data (step (b) in FIG. 10 (b)), and then outputs it to a display device such as a display.
- the present invention has been made in view of such a problem, and shortens the waiting time until the AV data can be viewed after actually performing the operation of starting the reproduction. It is an object of the present invention to provide an MPEG transport stream recording / reproducing apparatus and an MPEG video stream recording / reproducing apparatus which are improved in MPEG1.
- a first aspect of the present invention provides a first recording unit for recording a predetermined signal in which additional information of a program is discretely included,
- Recording control means for recording the predetermined signal in the first recording means; reproduction control means for reproducing the predetermined signal from the first recording means; and detecting additional information of the program from the predetermined signal.
- a recording / reproducing apparatus comprising: additional information I detecting means for adding the additional information to the predetermined signal;
- the second invention provides a first recording means for recording a predetermined signal discretely containing additional information of a program
- Recording control means for causing the first recording means to record the predetermined signal; reproduction control means for reproducing the predetermined signal from the first recording means; and program specification information (program specification information) from the predetermined signal.
- SI Service Information, hereinafter SI
- SI Service Information
- a recording / reproducing apparatus comprising: a PSI or SI adding means for adding the PSI or SI to the predetermined signal.
- a third aspect of the present invention provides a recording apparatus, comprising: a sixth recording unit that records a video stream of the MPEG; a recording control unit that causes the sixth recording unit to record the video stream of the MPEG; Playback control means for playing back the video stream of the MPEG from the recording means of 6, and I-frame position information detection means for detecting the position of an I-frame in the video stream of the MPEG as I-frame position information; I frame position information management means for managing I frame position information, wherein the reproduction control means obtains I frame position information from the I frame position information management means, and based on the I frame position information,
- the fourth invention provides a first recording means for recording an MPEG transport stream
- Recording control means for causing the first recording means to record the MPEG transport stream
- Playback control means for playing back the MPEG transport stream from the first recording means
- PCR detection means for detecting a PCR (Program Clock Reference, hereinafter referred to as PCR) from the MPEG transport stream;
- a recording / reproducing apparatus comprising: PCR adding means for adding the PCR to the MPEG transport stream.
- FIG. 1 is a diagram showing a configuration of an MPEG transport stream recording / reproducing apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing (a) the configuration of the MPEG-TS processed by the MPEG transport stream recording / reproducing apparatus of the present invention.
- (b) is a diagram showing a configuration of a video stream processed by the video stream recording / playback device of the MPEG of the present invention.
- FIG. 3 is a diagram showing a configuration of an MPEG transport stream recording / playback apparatus according to Embodiment 2 of the present invention.
- FIG. 4 is a diagram showing a configuration of an MPEG transport stream recording / playback apparatus according to Embodiment 3 of the present invention.
- FIG. 5 is a diagram showing a configuration of an MPEG transport stream recording / playback device according to Embodiment 4 of the present invention.
- FIG. 6 is a diagram showing a configuration of an MPEG transport stream recording / reproducing apparatus according to Embodiment 5 of the present invention.
- FIG. 7 is a diagram showing a configuration of a video stream recording / reproducing device of an MPEG according to a sixth embodiment of the present invention.
- FIG. 8 is a diagram showing a configuration of a video stream recording / reproducing device of an MPEG according to a seventh embodiment of the present invention.
- FIG. 9 is a diagram showing a configuration of a video stream recording / reproducing apparatus of the MPEG according to the eighth embodiment of the present invention.
- FIG. 10 is a diagram showing (a) the configuration of a stream decoder according to the conventional technology. is there.
- (b) is a flowchart showing how an AV data decoder decodes MP EG-TS.
- FIG. 11 is a diagram showing the configuration of (a) MP EG-TS processed on the stream decoder.
- (b) is a diagram illustrating a configuration of a video stream processed on a stream decoder.
- FIG. 12 is a diagram showing the presence of a PCR in an MPEG transport stream.
- FIG. 13 is a diagram showing the presence of SI in the MPEG transport stream. Explanation of reference numerals
- FIG. 1 is a diagram showing a configuration of a MPEG transport stream recording / playback device according to Embodiment 1 of the present invention.
- the PSI detecting means 1 and the recording control means 2 are means for directly receiving the input of the MPEG transport stream (MPEG-TS).
- the recording means 3 is a means having a random access function, such as an HDD, for recording M 0-3 under the control of the recording control means 2.
- the reproduction control means 4 is means for reproducing the MPEG-TS recorded on the recording means 3.
- the PSI adding means 5 is a means for receiving the input from the PSI detecting means 1 and the playback control means 4 and outputting the MPEG-TS to the outside of the MPEG transport stream recording / reproducing apparatus 10. .
- Recording control means 2 is MPEG-T replacement paper (Kaikai IJ26) 9
- the MPEG-TS is input from the outside, and the MPEG-TS is input to both the PSI detection means 1 and the recording control means 2.
- the recording control means 2 Upon receiving the MPEG-TS input, the recording control means 2 records this in the recording means 3.
- the MPEG-TS is stored as accumulated data.
- the PSI detecting means 1 detects PAT, PMT and CAT, which are the packets constituting the PSI, from each of the packets constituting the MPEG-TS, and records these as PSI data. I do.
- the PSI data is obtained by arranging the buckets constituting the PSI in a predetermined order, such as PAT at the beginning, PMT at the beginning, and CAT at the end.
- the PSI detecting means 1 simultaneously detects the value of the cyclic counter of each of PAT, PMT and CAT.
- the cyclic counter is data to which a value of 0 to 15 is added to various packets constituting the MPEG-TS including ⁇ , PMT, and CAT. By continuously detecting this value, the MPEG- The TS is played.
- the MPEG-TS is recorded in the recording means 3 and the PSI data is recorded in the PSI detecting means 1, respectively.
- the reproduction control means 4 reads the MPEG-TS recorded in the recording means 3 and outputs it to the PSI adding means 5.
- the 51 detecting means 1 outputs the PSI data to the PSI adding means 5.
- the PSI adding means 5 determines that the values of the PAT, PMT, and CAT cyclic counters constituting the PSI data are continuous with the values of the previously detected PAT, PMT, and CAT cyclic counters constituting the PSI. It is processed and added to maintain its properties.
- the MPEG-TS to which the PSI data is added at the beginning as described above is output to the outside of the MPEG transport stream recording / reproducing device 10.
- the reproduced MP EG-TS is decoded by the conventional MP EG-TS decoder.
- the beginning of the MPEG-TS contains the PSI data format. Since the PSIs PAT, PMT and CAT are given, the decoder processes these data first. Therefore, the decoder does not need to perform operations for detecting PMT, PAT, etc., and the time for that is saved.
- the PSI included in the MPEG-1 TS to be recorded is detected in advance as the PSI data.
- the addition of the MPEG-TS to the beginning of the MPEG-TS to be reproduced can omit the operation of PSI detection by the decoder at the time of decoding, thereby shortening the preparation time required for reproduction as a whole.
- each bucket of PAT, PMT and CAT constituting the PSI is described as being a single bucket.However, PAT, PMT and CAT are each composed of a plurality of packets. In some cases. In this case, when detecting the PSI, the 31 detecting means 1, together with the cyclic counter values of PAT, PMT and CAT, together with these plural 11
- the packet arrangement order is also detected at the same time, and the PSI addition means 5 adds the packet to the MPEG-TS so as to maintain the continuity of the bucket arrangement order, similarly to the cyclic counter value.
- the cyclic counter value of the PSI data to be added is rewritten according to the cyclic force counter value of each PSI originally included in the MPEG-TS.
- each PSI originally included in the MPEG-TS may be replaced according to the cyclic counter value of the PSI data to be added.
- this rewriting is realized by replacing all the PSI included in the original MPEG-TS with the PSI data obtained by continuously changing the cyclic counter value.
- FIG. 2 is a diagram showing a configuration of an MPEG transport stream recording / playback apparatus according to the second embodiment.
- the PSI detecting means 1 is provided on the reproducing side, and the reproducing control means 4 comprises the PSI adding means 5
- the PSI adding means 5 receives the input from the reproduction control means 4 and the PSI detecting means 1.
- the second embodiment having the above configuration will be described next.
- the recording operation will be described.
- the recording control means 2 starts the operation for recording the MPEG-TS
- the MP EG-TS is externally input
- the MP EG-TS is input to the recording control means 2.
- the recording control means 2 records this in the recording means 3.
- MPEG-TS is stored as stored data in recording means 3 as in Embodiment 1. 12
- the reproduction control means 4 reads out the MPEG-TS recorded in the recording means 3 and outputs it to the PSI addition means 5 and the PSI detection means 1.
- the PSI detecting means 1 When receiving the input of the MPEG-TS, the PSI detecting means 1 detects the PSI as PSI data together with the value of the cyclic counter in the same manner as in the first embodiment, and outputs the PSI to the PSI adding means 5.
- the PSI adding means 5 places the PSI at the head of the MPEG-TS so as to maintain the continuity of the value of the cyclic counter.
- the data is added and output to the outside of the MPEG transport stream recording / reproducing device 10.
- the PSI included in the MPEG-TS is detected as PSI data, and the MPEG-TS is detected.
- the preparation time required for reproducing the MPEG-TS can be shortened as a whole.
- each packet of PAT, PMT, and CAT constituting the PSI has been described as being a single packet.
- Each CAT may be composed of multiple packets. in this case, ? 3 1
- the detecting means 1 simultaneously detects the arrangement order of the plurality of packets together with the cyclic counter values of the PAT, PMT, and CAT. 13
- the cyclic counter value of the PSI data to be added may be rewritten according to the cyclic counter value of each PSI originally included in the MPEG-TS.
- each PSI originally included in the MPEG-TS may be replaced according to the cyclic counter value of the PSI data to be added.
- FIG. 3 is a diagram showing a configuration of an MPEG transport stream recording / playback apparatus according to the third embodiment.
- the same numbers as those in FIG. 1 denote the same parts, and the PSI adding means 5 receives the input from the PSI detecting means 1 and controls the recording of PSI data. Means for outputting to means 2.
- the third embodiment having the above configuration will be described below. First, the recording operation will be described.
- the recording control means 2 starts an operation for recording MPEG-TS
- an MPEG-TS is input from the outside, and the MPEG-TS is input to both the PSI detection means 1 and the recording control means 2. .
- the detecting means 1 Upon receiving the MPEG-TS input, the detecting means 1 detects the PSI from each of the buckets constituting it, together with the value of its cyclic counter, and outputs it to the PSI adding means 5 as PSI data. When receiving the PSI data, the PSI adding means 5 outputs the PSI data to the recording control means 2, and puts the MP EG-TS input so far at the head of the MP EG-TS in the recording control means 2. Tour 14
- the recording control means 2 receives the input of the MPEG-TS, to which the PSI data input from the PSI adding means 6 is added. That is, the recording control means 2 records the MPEG-TS with the PSI data added to the head in the recording means 3.
- the reproduction operation is performed by reading the MPEG-TS from the recording means 3 under the control of the reproduction control means 4, as in the conventional MPEG-TS recording / reproducing apparatus.
- the MPEG-TS recorded in the recording means 3 already has PSI data added to its head, at the time of decoding, the PSI detection operation is performed as in the first and second embodiments. No extra work is done.
- the operation of PSI detection by the decoder during decoding can be omitted, and the preparation time required for reproduction can be shortened as a whole.
- each packet of PAT, PMT, and CAT constituting the PSI is described as being a single packet, but PAT, PMT
- Each CAT and CAT may be composed of multiple packets.
- the PSI detecting means 1 when detecting the PSI, the PSI detecting means 1 simultaneously detects the arrangement order of the plurality of packets together with the cyclic counter values of PAT, PMT, and CAT. Similarly, maintain the continuity of the packet arrangement order.
- the cyclic counter value of the PSI data to be added is rewritten according to the cyclic force counter value of each PSI originally included in the MPEG-TS.
- each PSI originally included in the MPEG-TS may be replaced according to the cyclic counter value of the PSI data to be added.
- this rewriting is realized by replacing all the PSI included in the original MPEG-T with the PSI data in which the cyclic counter value is continuously changed.
- FIG. 4 is a diagram showing a configuration of an MPEG transport stream recording / reproducing apparatus according to Embodiment 4 of the present invention.
- the same reference numerals as those in FIG. 1 denote the same parts, and the PSI position information management means 6 is disposed between the PSI detection means 1 and the reproduction control means 4. Means.
- Embodiment 4 having the above configuration will be described next. First, the recording operation will be described.
- the recording control means 2 starts the operation of recording the MPEG-TS
- an MPEG-TS is input from outside, and the MPEG-TS sends this to both the PSI detection means 1 and the recording control means 2. input.
- the detecting means 1 Upon receiving the input of MPEG-TS, the detecting means 1 detects PSI together with the value of its cyclic counter from each bucket constituting the MPEG-TS, and outputs it to the recording control means 2 as PSI data.
- the PSI position information management means 6 accesses the recording control means 2 and acquires the position in the recording means where the recording control means 2 has recorded the PSI data as PSI position information.
- the MPEG-TS and PS S data are stored in the recording means 3, and the PSI position information is stored in the PSI position information management means 6, respectively.
- the reproduction control means 4 reads out the MPEG-TS and PSI data recorded in the recording means 3. However, at this stage, the MPEG-TS and the PSI data are output as uniform digital data without distinction of the contents.
- the PSI position information management means 6 accesses the reproduction control means 4 and detects the location where the PSI data is recorded from the digital data being processed by the reproduction control means 4 based on the PSI position information. Next, when the location of the PSI data is detected, the PSI location information management means 6 extracts the PSI data from the location, and adds the continuity of the value of the cyclic counter to the head of the MPEG-TS in the original digital data. This is added so that the transport stream is continuous with the MPEG-TS input so far.
- the reproduction control means 4 adds the PSI data to the head portion, and outputs the MPEG_TS with the data partially corrected to the outside of the MPEG transport stream recording / reproducing apparatus 10.
- the PSI included in MPEG-TS is detected as PSI data, and MPEG-TS To be added to the beginning of 17
- each packet of PAT, PMT, and CAT constituting the PSI is described as being a single packet, but PAT, PMT
- Each CAT and CAT may be composed of multiple packets.
- the PSI detecting means 1 simultaneously detects the arrangement order of the plurality of packets together with the cyclic counter values of PAT, PMT, and CAT. Similar to the counter value, it is added to the MPEG-TS so as to maintain the continuity of the packet arrangement order.
- the cyclic counter value of the PSI data to be added is rewritten according to the cyclic force counter value of each PSI originally included in the MPEG-TS.
- each PSI originally included in the MPEG-TS may be replaced according to the cyclic counter value of the PSI data to be added.
- FIG. 5 is a diagram showing a configuration of an MPEG transport stream recording / reproducing apparatus according to Embodiment 5 of the present invention.
- the same reference numerals as those in FIGS. 1 and 4 denote the same parts, but the PSI detecting means 1 and the PSI position information managing means 6 are the same as those of the recording means 3.
- Embodiment 4 having the above configuration will be described next. First, the recording operation will be described.
- the recording control means 2 starts operation to record MPEG-TS
- MPEG-TS is input from the outside, and the MPEG-TS inputs this to the recording control means 2.
- the recording means 3 records this in the recording means 3. The operation up to this point is the same as the operation of the conventional MPEG-TS recording / playback apparatus.
- the PSI detecting means 1 accesses the recording means 3, detects the PSI from the MPEG-TS stored in the recording means 3 together with the value of its cyclic counter, and records this as PSI data. At the same time, the position in the recording means 3 where the PSI data is stored is detected, and this position is input to the PSI position information management means 6 as PSI position information.
- the PSI position information management means stores the input PSI position information.
- the reproduction control means 4 reads the MPEG-TS recorded in the recording means 3.
- the PSI position information management means 6 accesses the reproduction means 3 and detects the location where the PSI data is recorded from the MPWG-TS being processed by the reproduction control means 4 based on the PSI position information.
- the PSI data is extracted from the location and added to the beginning of MP EG-TS in the original digital data so as to maintain the continuity of the value of the cyclic counter. Make it a transport stream.
- the playback control means 4 adds the PSI data to the beginning, and corrects the MPEG-TS with the data partially corrected, and reproduces the MPEG transport stream recording data. 19
- the PSI included in the MPEG-TS is detected as PSI data, and the MPEG-TS
- the preparation time required for MPEG-TS playback can be shortened as a whole, and the PSI detection operation can be shortened.
- it can be performed separately from recording and reproduction, that is, independently of the operation of the recording control means 2 and the reproduction control means 4.
- each of the PAT, PMT, and CAT packets constituting the PSI is described as being a single packet, but the PAT, PMT Each CAT and CAT may consist of multiple packets.
- the PSI detecting means 1 when detecting the PSI, the PSI detecting means 1 simultaneously detects the arrangement order of the plurality of packets together with the cyclic counter values of PAT, PMT, and CAT. Similar to the value, the packet is added to the MPEG-TS so as to maintain the continuity of the packet arrangement order.
- the cyclic counter value of the PSI data to be added may be rewritten according to the cyclic counter value of each PSI originally included in the MPEG-TS.
- each PSI originally included in the MPEG-TS may be replaced according to the cyclic counter value of the PSI data to be added.
- the MPEG transport stream is selected as the target signal for recording and reproduction.
- the present invention is not limited to this. 20
- the target signal for recording and playback according to the present invention is a predetermined signal that discretely includes additional information of a program.
- the MPEG transport stream including the PSI has been described as an example.
- a PCR Program Clock Reference
- Embodiments 1 to 5 are applicable.
- the drawings and description of the embodiment using the PCR can be easily understood by replacing PSI in each drawing and the corresponding description in the first to fifth embodiments with a PCR, and the drawings and description thereof will be omitted.
- the MPEG transport stream including the PSI has been described as an example.
- SI Service Information
- Embodiments 1 to 5 can be applied.
- the drawings and description of the embodiment using the SI are easily understood by replacing PSI in the drawings and corresponding descriptions in the above-described first to fifth embodiments with SI, and the drawings and description thereof will be omitted.
- FIG. 6 is a diagram showing a configuration of a video stream recording / playback device according to Embodiment 6 of the present invention.
- the I-frame position information detecting means 11 and the recording control means 2 are means for directly receiving an input of a video stream.
- the recording means 3 is means for recording a video stream under the control of the recording control means 2, and the reproduction control means 4 is twenty one
- the means for reproducing the video stream recorded in the recording means 3 and the I-frame position information managing means 12 receive the input from the I-frame position information detecting means 11 and the recording control means 2 and convert the video stream into a video. This is a means for outputting to the outside of the stream recording / reproducing device 60.
- the sixth embodiment having the above configuration will be described below.
- the recording control means 2 starts an operation for recording a video stream
- a video stream is input from the outside, and the video stream is transmitted to both the I-frame position information detecting means 11 and the recording control means 2.
- the recording control means 2 Upon receiving the input of the video stream, the recording control means 2 records this in the recording means 3.
- the video stream is stored as stored data.
- the I-frame position information detecting means 11 detects the position of the I-frame in the video stream, and uses this as the I-frame position information, Input to the location information management means 12.
- the I-frame position information managing means receives the I-frame position information from the I-frame position information detecting means 11, the information is obtained from the I-frame position information detecting means and the recording control means 2, and the I-frame position information is obtained.
- the position of the video data stored in the recording means 3 is detected, and the storage position of the I-frame position information on the recording means 3 is managed.
- the recording means 3 stores the video stream
- the I-frame position information management means 12 stores the storage position of the I-frame position information on the recording means 3.
- Reproduction control means 4 records in recording means 3 twenty two
- the reproduced video stream is decoded by a conventional video stream decoder.
- the video stream processed by the video stream recording / reproducing device 60 is an I-frame. Is input to the decoder first, so that the operation of I-frame detection by the decoder is omitted.
- an I-frame included in the video stream to be recorded in advance is detected as I-frame position information.
- the video stream is output with this I frame at the beginning during playback, so that the operation of detecting the I frame by the decoder during decoding is omitted and the preparation time required for playback is reduced as a whole. Can be.
- FIG. 7 is a diagram showing a configuration of a video stream recording / playback device according to Embodiment 7 of the present invention.
- the same reference numerals as those in FIG. 6 denote the same parts or the same means.
- the I-frame position information detecting means 11 and the recording control means 2 are means for directly receiving an input of a video stream, and the I-frame position information detecting means 11 is a means for inputting to the recording control means 2;
- Frame position information reading means 13 accesses recording means 3 twenty three
- the sixth embodiment having the above configuration will be described below. First, the recording operation will be described.
- the recording control means 2 starts an operation for recording a video stream
- a video stream is input from outside, and the video stream is transmitted to the I-frame position information detecting means 11 and the recording control means 2. Fill in both.
- the I-frame position information detecting means 11 detects the position of the I-frame in the video data, and uses this as the I-frame position information to perform the recording Input to means 2.
- the recording control means 2 When the recording control means 2 receives the input of the video stream and the I-frame position information, the recording control means 2 records both of them in the recording means 3. In the recording means 3, the video stream and the I-frame position information are stored as accumulated data.
- the reproduction control means 4 reads the video stream recorded in the recording means 3.
- the I-frame position information reading means 13 also accesses the recording means 3, acquires the I-frame position information, and inputs it to the reproduction control means 4.
- the reproduction control means 4 Upon receiving the input of the above-mentioned I-frame position information, the reproduction control means 4 detects the position of the I-frame from the video stream read out from the recording means 3 based on the input, and the I-frame is positioned at the top. Thus, the video stream is output to the outside of the video stream recording / reproducing device 70.
- the reproduced video stream is decoded by the conventional video stream decoder.
- the video stream is input to the decoder with the I frame at the head, so that the I How frame detection works twenty four
- the I-frame included in the video stream to be recorded in advance is detected as the I-frame position information and recorded in the recording means.
- the I-frame position information and the video stream are played back, and the video stream is output with the I-frame at the beginning.
- the required preparation time can be shortened as a whole.
- FIG. 8 is a diagram showing a configuration of a video stream recording / playback apparatus according to Embodiment 8 of the present invention. As shown in the figure, the same reference numerals as those in FIG. 6 denote the same parts or the same means. Embodiment 6 having such a configuration will be described below. First, the recording operation will be described. When the recording control means 2 starts an operation for recording a video stream, a video stream is input from outside, and the video stream is transmitted to both the I-frame position information detecting means 11 and the recording control means 2. To enter.
- the I-frame position information detecting means 11 Upon receiving the video stream, the I-frame position information detecting means 11 detects the position of the I-frame from this video stream as I-frame position information, and generates a recording start signal including the I-frame position information. This is input to the recording control means 2.
- the recording control means 2 when receiving the input of the video stream and the recording start signal, the recording control means 2 detects an I frame from the input video stream based on the I frame position information included in the recording start signal, and Video stream after this I frame twenty five
- the recording control means 2 discards the video stream before the I frame and does not record it on the recording means 3.
- the recording unit 3 stores the video stream after the I frame detected by the I frame position information detecting unit.
- the playback operation and decoding are performed in the same manner as in the conventional video stream recording / playback apparatus.
- the video stream has a configuration in which the I frame is at the head. Therefore, the operation of detecting the I frame by the decoder is omitted.
- an I-frame included in the video stream to be recorded is detected in advance as I-frame position information.
- the video stream is recorded with this I frame at the head, so that the operation of detecting the I frame by the decoder at the time of decoding can be omitted, and the preparation time required for reproduction can be shortened as a whole.
- the MPEG transport stream recording / reproducing device for detecting PSI and the MPEG video stream recording / reproducing device for detecting I-frame are described as separate devices.
- the recording unit 3 may be used in common, and each unit and each unit may be combined arbitrarily. In this case, the time required for decoding the MPEG-TS is further reduced. It becomes possible.
- the operation of 3 has been described as being realized by hardware, it may be realized by software by a program using a computer. Further, in each of the embodiments of the present invention, the MPEG transport stream recording / reproducing apparatus or the MPEG video stream recording / reproducing apparatus of the present invention has been mainly described.
- the data includes data structure, data format, data type, and the like.
- the medium includes a recording medium such as a ROM, a transmission medium such as the Internet, and a transmission medium such as light, electric waves, and sound waves.
- the supported medium includes, for example, a recording medium on which a program and / or data is recorded, a transmission medium for transmitting the program and / or data, and the like.
- a recording medium such as a ROM
- the program and Z or data to be transmitted can be processed by a computer. Is that it can be handled by a computer as a result of transmission.
- the information aggregate includes, for example, programs and software such as Z or data.
- the time for detecting an I frame at the time of decoding is omitted.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00931687.8A EP1111916B1 (en) | 1999-06-07 | 2000-06-05 | Recording/reproducing device, mpeg video stream recording/reproducing device, and medium |
US09/762,380 US7224887B1 (en) | 1999-06-07 | 2000-06-05 | Recording and reproducing apparatus, MPEG image stream recording and reproducing |
US11/498,352 US20060269255A1 (en) | 1999-06-07 | 2006-08-03 | Recording and reproducing apparatus, MPEG image stream recording and reproducing apparatus and medium |
US11/736,270 US20070183757A1 (en) | 1999-06-07 | 2007-04-17 | Recording and reproducing apparatus, mpeg image stream recording and reproducing apparatus and medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/160076 | 1999-06-07 | ||
JP16007699 | 1999-06-07 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/498,352 Division US20060269255A1 (en) | 1999-06-07 | 2006-08-03 | Recording and reproducing apparatus, MPEG image stream recording and reproducing apparatus and medium |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000076212A1 true WO2000076212A1 (fr) | 2000-12-14 |
Family
ID=15707365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2000/003620 WO2000076212A1 (fr) | 1999-06-07 | 2000-06-05 | Dispositif d'enregistrement/lecture, dispositif d'enregistrement/lecture de flux video mpeg, et support associe |
Country Status (4)
Country | Link |
---|---|
US (3) | US7224887B1 (ja) |
EP (1) | EP1111916B1 (ja) |
CN (2) | CN100531351C (ja) |
WO (1) | WO2000076212A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1111916B1 (en) * | 1999-06-07 | 2013-08-07 | Panasonic Corporation | Recording/reproducing device, mpeg video stream recording/reproducing device, and medium |
WO2002032130A1 (fr) * | 2000-10-12 | 2002-04-18 | Matsushita Electric Industrial Co., Ltd. | Dispositif d'enregistrement/lecture de donnees audio-video et procede associe, et dispositif de lecture de donnees audio-video et procede associe |
EP1315386B1 (en) | 2001-11-14 | 2013-07-03 | Thomson Licensing | Digital video recorder and methods for digital recording |
EP1313327A1 (en) * | 2001-11-14 | 2003-05-21 | Deutsche Thomson-Brandt Gmbh | Digital video recorder and methods for digital recording |
CN103067772A (zh) * | 2012-12-31 | 2013-04-24 | 广东九联科技股份有限公司 | 一种机顶盒快速搜索节目的方法 |
US9402111B2 (en) | 2014-09-17 | 2016-07-26 | Ispot.Tv, Inc. | Television audience measurement method and apparatus |
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JP3575100B2 (ja) * | 1994-11-14 | 2004-10-06 | ソニー株式会社 | データ送信/受信装置及び方法並びにデータ記録/再生装置及び方法 |
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- 2000-06-05 CN CN200510053181.5A patent/CN100531351C/zh not_active Expired - Fee Related
- 2000-06-05 WO PCT/JP2000/003620 patent/WO2000076212A1/ja active Application Filing
- 2000-06-05 CN CN00801590.2A patent/CN1199447C/zh not_active Expired - Fee Related
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2006
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Also Published As
Publication number | Publication date |
---|---|
CN1319306A (zh) | 2001-10-24 |
US20060269255A1 (en) | 2006-11-30 |
CN1199447C (zh) | 2005-04-27 |
CN1658664A (zh) | 2005-08-24 |
US7224887B1 (en) | 2007-05-29 |
EP1111916A4 (en) | 2006-02-08 |
US20070183757A1 (en) | 2007-08-09 |
EP1111916B1 (en) | 2013-08-07 |
EP1111916A1 (en) | 2001-06-27 |
CN100531351C (zh) | 2009-08-19 |
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