WO2005093746A1 - 高速ダビング装置 - Google Patents
高速ダビング装置 Download PDFInfo
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- WO2005093746A1 WO2005093746A1 PCT/JP2005/000489 JP2005000489W WO2005093746A1 WO 2005093746 A1 WO2005093746 A1 WO 2005093746A1 JP 2005000489 W JP2005000489 W JP 2005000489W WO 2005093746 A1 WO2005093746 A1 WO 2005093746A1
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- speed dubbing
- bit stream
- storage device
- buffer
- capacity
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- 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
-
- 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
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/1062—Data buffering arrangements, e.g. recording or playback buffers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10833—Copying or moving data from one record carrier to another
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
-
- 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
-
- 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
- H04N9/806—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 with processing of the sound signal
- H04N9/8063—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 with processing of the sound signal using time division multiplex of the PCM audio and PCM video signals
-
- 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 DVD video recording standard (DVD Specifications for
- Rewritable / Re Relates to the technology for converting bitstreams of recording discs, Part 3) into bitstreams of the DVD video standard (DVD Specifications for Read-Only Disc, Part 3).
- Standards for recording on a DVD include a DVD video recording standard and a DVD video standard.
- the DVD video recording standard is used for real-time recording of content.
- content recorded in the DVD video standard can be played on a playback-only DVD player.
- Patent Literature 1 discloses a device and a method for converting a bit stream of an RTR (Real Time Recording) format into a bit stream of a DVD video standard format.
- the bit stream of the DVD video recording standard which is data in the RTR format, is described below.
- digital conversion To directly convert digital data into a DVD video standard bit stream without decoding it is referred to as “digital conversion”.
- Patent Document 1 JP 2003-242721 A
- An object of the present invention is to reduce the time required for dubbing a bit stream to another storage device.
- the present invention provides, as a high-speed dubbing device, a first storage device for reading and outputting a bit stream conforming to the DVD video recording standard, and a first device for storing and outputting the output of the reading device.
- a navigation pack which replaces the real-time data information pack in the buffer and the bit stream output from the first buffer with a navigation pack, and stores and outputs the output of the navigation pack generator.
- a second buffer that converts the bit stream output from the second buffer into a bit stream that conforms to the DVD video standard, and writes the bit stream to a second storage device. At least two of the read device, the navigation pack generator, and the write device are in parallel. Those that are configured to be able to operate.
- the first and second buffers are provided, reading from the first storage device is performed.
- the reading process or the writing process to the second storage device can be performed in parallel with other processes. Therefore, it is possible to read out a bit stream conforming to the DVD video recording standard, convert the bit stream into a bit stream conforming to the DVD video standard, and write the same at high speed.
- the read device includes a stream analysis unit that analyzes a bit stream read from the first storage device and outputs obtained stream analysis information.
- the navigation pack generation unit performs the replacement using the stream analysis information
- the writing device includes a stream rewriting unit that performs the conversion using the stream analysis information. It is preferable that there is.
- the capacity of the first buffer is smaller than the capacity of a cache memory of the first storage device.
- the second buffer has a capacity less than or equal to a capacity of a cache memory of the second storage device.
- the capacity of the cache memory of the first storage device is measured by reading the power of the first storage device, and a buffer for outputting the measurement result is provided. It is preferable that a check unit is further provided, and the capacity of the first buffer is changed according to the measurement result.
- the apparatus further comprises a buffer checker, wherein the second buffer changes its capacity according to the measurement result.
- the capacity of the cache memory of the first storage device is measured by reading the power of the first storage device, and the data is written to the second storage device.
- a buffer check unit that measures the capacity of the cache memory of the second storage device and outputs a smaller one of the obtained measurement results, wherein the first and second buffers are Preferably, the capacity is changed to the capacity indicated by the measurement result.
- the reading apparatus may include a plurality of the first storage devices each storing data of the DVD-Video recording standard format divided into a predetermined number of bits. Therefore, it is preferable that bit streams are read in parallel and output as one bit stream.
- the predetermined number is 16.
- the predetermined number is eight.
- the first buffer is provided in plurality, and the reading apparatus stores the data of the DVD video recording standard format by dividing the data into data of a predetermined size.
- a bit stream is read from the plurality of first storage devices and output to a buffer corresponding to the first storage device that has output the read bit stream among the plurality of first buffers. It is preferable that, when the reading of one of the plurality of first storage devices is started, the reading of the other one of the first storage devices is started.
- the predetermined size is an integral multiple of the size of a VOBU (Video Object Unit).
- the high-speed dubbing apparatus further includes a writing unit that writes a bit stream compliant with the DVD-Video standard obtained by the writing apparatus into the first storage apparatus.
- the read device reads the bit stream compliant with the DVD video standard written in the first storage device, and the write device reads the bit stream. It is preferable that the bit stream compliant with the DVD video standard read by the device is written to the second storage device.
- the navigation pack generating unit is included in a navigation pack of the bit stream.
- a part of the information is changed.
- the writing apparatus may write the PES of the bit stream. extension—It is preferable to delete a field or correct time information.
- a filter for controlling the output of a bit stream compliant with the DVD-Video standard obtained by the conversion by the writing device to the second storage device is further provided.
- the read device monitors copyright information of a bit stream compliant with the DVD video recording standard read from the first storage device card, and outputs the result
- the filter includes: If the result of monitoring the copyright information output from the read device indicates that copying is not possible, a bit stream compliant with the DVD video standard is output to the second storage device. It is preferable that they do not exist.
- the read device may include a CGMS (Copy Generation) as the copyright information.
- CGMS Copy Generation
- the read device may not copy the copyright information of the first part of the bit stream conforming to the DVD video recording standard, and may copy the copyright information of the subsequent second part.
- the time information of the first part is held, and the time information of the second part is reduced. Is preferably used as the time information of the portion.
- the present invention provides a high-speed dubbing device, which reads a bit stream conforming to the DVD video recording standard and a navigation pack attached to the bit stream into a first storage device, and reads real-time data in the bit stream.
- a read device that deletes and outputs either the information pack or the navigation pack, a buffer that stores and outputs the output of the read device, and a bit stream output from the buffer according to the DVD video standard.
- a writing device that converts the data into a compliant bit stream and writes the converted bit stream to a second storage device, wherein the reading device and the writing device can operate in parallel.
- the buffer has a capacity equal to or less than the capacity of the cache memory of the first storage device and equal to or less than the capacity of the cache memory of the second storage device. It is preferable that
- the storage device further includes a buffer check unit that measures the capacity of the cache memory of the second storage device and outputs a smaller one of the obtained measurement results, and the buffer changes its capacity to the capacity indicated by the measurement result.
- a buffer check unit that measures the capacity of the cache memory of the second storage device and outputs a smaller one of the obtained measurement results, and the buffer changes its capacity to the capacity indicated by the measurement result.
- the present invention it is possible to read out a bit stream conforming to the format of the DVD video recording standard, convert the bit stream into a bit stream conforming to the format of the DVD video standard, and write it to the storage device at a high speed. Can be done. Therefore, the dubbing process for recording the video and the like recorded on the recording medium in the storage device according to the format of the DVD video recording standard on another recording medium and the like in another storage device according to the format of the DVD video standard at high speed. It can be carried out.
- FIG. 1 is a block diagram showing an example of a configuration of a high-speed dubbing apparatus according to a first embodiment of the present invention.
- FIG. 2 is an explanatory diagram showing a directory structure of a disc on which information is recorded according to the DVD video recording standard.
- FIG. 3 is an explanatory diagram showing a directory structure of a disc on which information is recorded in accordance with the DVD video standard.
- FIG. 4 is an explanatory diagram showing a configuration of a VOB of the DVD video recording standard and the DVD video standard.
- FIG. 5 is an explanatory diagram showing the structure of a real-time data information pack (RDI-PCK).
- FIG. 6 is an explanatory diagram showing a structure of a navigation pack (NV_PCK).
- FIG. 7 is an explanatory diagram showing the structure of a video pack (V_PCK).
- FIG. 8 is an explanatory diagram showing the structure of an audio pack (A-PCK).
- FIG. 9 is a block diagram showing an example of the configuration of a first storage device from which a bit stream is read.
- FIG. 10 is a block diagram showing an example of the configuration of the second storage device into which the bit stream is written.
- FIG. 11 is a block diagram showing a configuration of a reading unit in FIG. 1.
- FIG. 12 is an explanatory diagram showing a storage state of contents in a DVD video recording standard format in the storage device of FIG.
- FIG. 13 is an explanatory diagram of deletion of a PES-extension-field by a stuffing byte.
- FIG. 14 is an explanatory diagram of PES-extension-field deletion by padding packets.
- FIG. 15 is a timing chart showing an example of processing in the high-speed dubbing apparatus of FIG. 1.
- FIG. 16 is a timing chart showing an example of data transfer between the reading unit and the storage device in FIG. 1.
- FIGS. 17 (a)-(c) are timing charts showing an example of a case where two processes are performed in parallel in the high-speed dubbing apparatus of FIG. 1.
- FIG. 18 is a block diagram showing an example of a configuration of a high-speed dubbing device according to a second embodiment of the present invention.
- FIG. 19 is a block diagram showing an example of a configuration of a high-speed dubbing device according to a third embodiment of the present invention.
- FIG. 20 is an explanatory diagram showing an example of the format of a bit stream output from the storage device of FIG. 19.
- FIG. 21 is a block diagram showing an example of a configuration of a high-speed dubbing device according to a fourth embodiment of the present invention.
- FIG. 22 is a block diagram showing a configuration of a reading unit in FIG. 21.
- FIG. 23 is an explanatory diagram showing a storage state of contents of the DVD video recording standard format in the two storage devices of FIG.
- FIG. 24 is a timing chart showing an example of processing in the high-speed dubbing apparatus of FIG. It is a chart.
- FIG. 25 is a block diagram showing an example of a configuration of a high-speed dubbing device according to a fifth embodiment of the present invention.
- FIG. 26 is an explanatory diagram showing a storage state of contents in the DVD video recording standard format in the two storage devices of FIG. 25.
- FIG. 27 is a block diagram showing a configuration of a read unit in FIG. 25.
- FIG. 28 is a timing chart showing an example of processing in the high-speed dubbing device of FIG. 25.
- FIG. 29 is a block diagram showing an example of a configuration of a high-speed dubbing device according to a sixth embodiment of the present invention.
- FIG. 30 is a block diagram showing a configuration example of a high-speed dubbing device according to a seventh embodiment of the present invention.
- FIG. 31 is an explanatory diagram of SCR recorrection.
- FIG. 1 is a block diagram showing an example of a configuration of a high-speed dubbing apparatus according to the first embodiment of the present invention.
- the high-speed dubbing device 100 shown in FIG. 1 includes a reading device 20, a first buffer 30, a navigation pack generating unit (NV-PCK generating unit) 40, a second buffer 50, and a writing device 60.
- the reading device 20 includes a reading unit 22 and a stream analyzing unit 26.
- the writing device 60 includes a stream rewriting unit 62 and a writing unit 64.
- the high-speed dubbing device 100 reads data from the first storage device 10 and converts the read bit stream of the DVD video recording standard (DVD Specifications for Rewritable / Re-recording Discs, Part 3) into the DVD video standard (DVD Specifications).
- the storage device 10 is a hard disk drive and the storage device 70 is a DVD-R (DVD-Recordable) drive.
- the storage device 10 is a device that outputs a bit stream conforming to the DVD video recording standard.
- a DVD-Rewritable drive or a DVD-RAM (DVD-Random Access Memory) drive may be used.
- the storage device 70 is a device capable of recording a DVD-Video standard bit stream, and may be a hard disk drive, a DVD-RW drive, or the like. Further, the storage device 10 and the storage device 70 may be the same device. That is, the converted bit stream of the DVD-Video standard may be recorded on a device that outputs the bit stream of the DVD-Video recording standard before the conversion.
- FIG. 2 is an explanatory diagram showing the directory structure of a disc on which information is recorded according to the DVD video recording standard.
- the directories on this disc have a hierarchical structure, and there is a directory called DVD-RTAV under the ROOT directory.
- Within this directory are files VR—MANGR. IFO, VR—MOVIE. VRO, VR_STILL. VRO, VR—AUDIO. VRO, and VR—MANAGER. BUP.
- VR-MANGR. IFO is a file for video management information. Specifically, the VR-MANGR. IFO contains the start address, time zone, character code, basic information of the recorded disc, video and audio attributes, information about still image files, It contains information on program chains such as live start / end time, video / audio attribute search information, entry points, and text information, text information on programs (numbers), playlists, and the like.
- VR MOVIE.
- VRO stores video, audio, and sub-pictures that are played back on a DVD. These video and audio data are composed of a plurality of VOB (Video Object) units.
- VR STILL.
- VRO stores still images.
- VR AUDIO.
- VRO stores the audio for displaying still images.
- VR-MAN AGER. BUP is a backup of VR-MANGR. IFO.
- FIG. 3 is an explanatory diagram showing a directory structure of a disc on which information is recorded according to the DVD video standard.
- a DVD video standard disc has a single DVD Video Zone.
- This DVD Video Zone is composed of a VMG (Video Manager) and a plurality of VTSs (Video Title Sets).
- the VTS is composed of VTSI (Video Title Set Information), VTSM-VOBS, VTSTT-VOBS, and VTSI for backup.
- the VTSI includes information on reproduction control of data included in the VTS.
- VT SM VOBS stores information used for DVD menus.
- VTSTT VOBS stores video, audio, and sub-video. These video and audio data are composed of a collection of VOBs and multiple files in units! RU
- VRO in the DVD video recording standard to VOBs in the DVD video format standard. Used for
- FIG. 4 is an explanatory diagram showing a configuration of a VOB of the DVD video recording standard and the DVD video standard.
- VOB is composed of multiple VOBUs (Video Object Units)
- VOBU is composed of multiple packs.
- Knock is data in units of 2048 bytes.
- a pack is composed of a real-time data information pack (RDI—Real Time Data Information Pack), a video pack (V—PCK: Video Pack), and an audio pack (A—PCK: Audio). Pack).
- RTI Real Time Data Information Pack
- V video pack
- A PCK: Audio
- Pack In the DVD video standard, a pack is a navigation pack (NV PCK: Navigation Pack), One of a video pack and an audio pack.
- hatched portions indicate packs having a PES-extension-field.
- the number of VOBUs in a VOB and the length of each VOB are the same in the DVD video recording standard and the DVD video standard. Not stipulated.
- the RDI-PCK is located at the beginning of each VOBU, but the pack at the beginning of the VOBU does not necessarily have to be the RDI-PCK.
- FIG. 5 is an explanatory diagram showing the structure of a real-time data information pack (RDI-PCK).
- RDI—PCK is a pack for storing real-time information. Real-time data and user data are stored in the RDI data area in FIG. DCI—CCI—SS information is described in the 21st byte from the beginning of the RDI data, and CCI (Copy Control Information) information is described in the 23rd byte. The first to third bits in DCI-CCI-SS contain CCI-SS information.
- CCI-SS information indicates whether or not the CCI information is valid.
- CCI If the SS information indicates that the CCI information is valid, the CCI information is valid.
- the eighth and sixth bits of the CCI information are called CGMS (Copy Generation Management System) information and indicate copyright information for copy management of this content. If these bits indicate 0x0 (Ox indicates hexadecimal), the content is not copyable; if these bits indicate 0x4, the content is copyable. is there. Content that cannot be copied cannot be dubbed.
- the System Header indicates bit rate, buffer information, and the like.
- Packet Header indicates a PES Header for each pack.
- the type of knock is determined by the stream ID (stream-id) and the sub-stream ID (sub-stream-id) in the packet header.
- FIG. 6 is an explanatory diagram showing the structure of the navigation pack (NV_PCK).
- NV_PCK is a pack that stores position information, copyright information, and the like of data to be reproduced.
- Pack Header ⁇ System Header ⁇ Packet Header ⁇ sub stream id is the same as RDI P and K It is the same.
- FIG. 7 is an explanatory diagram showing the structure of a video pack (V-PCK).
- the video pack is a pack that stores image information, and the image data is stored in the Video data part of FIG.
- the Pack Header, System Header, and Packet Header are the same as in the case of RDI-PCK.
- a video pack has a System Header if it is the first pack of the VOBU, but does not have a System Header otherwise.
- FIG. 8 is an explanatory diagram showing the structure of an audio pack (A-PCK).
- An audio pack is a pack that stores audio data.
- FIG. 8 shows a case where the audio pack has audio data in the AC3 format and a case where the audio pack has audio data in the linear pulse code modulation (LPCM) format.
- Pack Header, System Header, Packet Header ⁇ sub-stream-id is the same as in the case of RDI-PCK.
- the audio frame information indicates a frame number of audio data included in the pack and the like.
- audio data information is included in the audio pack, and this information includes the quantization bit number (quantization—word—length) and the sampling frequency (audio—sampling—length). frequency), the number of channels (number-of_audio-channels), and the data indicating the range control (dynamic_range-control) are included!
- FIG. 9 is a block diagram showing an example of the configuration of the first storage device 10 from which the bit stream is read.
- the storage device 10 of FIG. 9 includes a read / write unit 14 and a cache memory 16.
- the read / write unit 14 reads data from the recording medium 12 and writes data to the recording medium 12.
- FIG. 10 is a block diagram showing an example of the configuration of the second storage device 70 into which the bit stream is written.
- the storage device 70 of FIG. 10 includes a read / write unit 74 and a cache memory 76.
- the read / write unit 74 writes data to the recording medium 72.
- the recording medium 72 is, for example, a DVD-R disc, which is detachable from the storage device 70.
- the high-speed dubbing apparatus shown in Fig. 1 will be described.
- the recording medium 12 in the storage device 10 stores a bit stream conforming to the DVD video recording standard.
- the stored bit stream is a bit stream in which the resolution, aspect ratio, and audio attributes of the video have not changed and the playback time of each VOBU except the last VOBU is 0.4 seconds or more.
- FIG. 11 is a block diagram showing a configuration of the reading unit 22 of FIG.
- the read unit 22 includes a read command issuing unit 21 and a read command control unit 23.
- the read command control unit 23 issues a read command RDI to the read command issuing unit 21.
- the read command RDI includes an address of data to be read stored in the storage device 10 and a read permission.
- the read command issuing unit 21 When receiving the read command RDI, the read command issuing unit 21 issues a read command RDC to the storage device 10. Upon receiving the read command RDC, the storage device 10 reads the content in the DVD video recording standard format and outputs the content to the stream analysis unit 26 as the bit stream DVR. When the reading is completed, the read command issuing unit 21 outputs an end signal ENS to the read command control unit 23. The read command control unit 23 does not issue the next read command RDC until receiving the end signal ENS.
- FIG. 12 shows a DVD video recording standard format in the storage device 10 of FIG.
- FIG. 4 is an explanatory diagram showing a storage state of the content.
- data is managed in 16-bit units.
- the content of the DVD video recording standard format is stored as 16-bit data DTI, DT2,..., For example, one block occupies an area of ⁇ words (16 bits is one word). I have.
- the reading unit 22 reads the bit stream DVR conforming to the DVD video recording standard from the storage device 10, and outputs the bit stream DVR to the stream analyzing unit 26.
- the stream analyzer 26 analyzes the bitstream DVR, outputs the obtained stream analysis information SI to the NV-PCK generator 40 and the stream rewriter 62, and outputs the bitstream to the buffer 30.
- the buffer 30 After storing the input bit stream, the buffer 30 outputs the bit stream to the NV-PCK generation unit 40.
- Stream analysis information SI is information necessary for converting a bit stream conforming to the DVD video recording standard into a bit stream conforming to the DVD video standard, and includes SCR, VOB, VOBU configuration, and A-SYNCA.
- the NV-PCK generation unit 40 performs an NV-PCK generation process. That is, the NV-PCK generation unit 40 generates the NV-PCK from information such as A-SYNCA, VOBU-2NDREF-EA, and VOBU-3RDREF-EA included in the stream analysis information SI, and outputs the NV-PCK from the buffer 30.
- the RDI-PCK in the bit stream thus generated is replaced with the generated NV-PCK (see FIG. 4), and the obtained bit stream is output to the buffer 50.
- the buffer 50 After storing the input bit stream, the buffer 50 outputs the bit stream to the stream rewriting unit 62.
- the stream rewriting unit 62 performs a stream rewriting process. That is, based on the stream analysis information SI, the stream rewriting unit 62 rewrites the time stamp and deletes the PES-extension-field for the bit stream input from the buffer 50! A bit stream DV conforming to the standard is output to the writing unit 64.
- the stream rewriting unit 62 detects the first pack of the VOB for each pack type based on the configuration of the VOB and VOBU included in the stream analysis information SI and the information of the SCR, SCR in the pack header (Pack Header), PTS (Presentation Time Stamp) in the packet header (Packet Header), DTS (Decoding The time indicated by the SCR of the first pack of the VOB is subtracted from each of the time information of the Time Stamp, and the subtraction result is replaced with the original SCR, PTS, and DTS. Further, the stream rewriting unit 62 deletes the PES-extension-field of the packs other than the VOB head pack of the various packs, and outputs the obtained bit stream to the writing unit 64.
- FIG. 13 is an explanatory diagram of PES-extension-field deletion using a stuffing byte. If the packet containing PES—extension—field (Ex in FIG. 13) has no padding packet and the padding packet is less than 5 bytes, the PES—extension—field—flag After rewriting the bits of the PES to zero, overwrite the PES-extension-field with the stuffing byte.
- FIG. 14 is an explanatory diagram of deletion of a PES-extension-field by a padding packet. If the condition that the padding packet is short and the stuffing noise is less than 5 bytes does not apply to the packet including the PES—extension—field, the bit of the PES—extension—field—flag is rewritten to zero, and the PES — Extension— Remove the field and the stuffing bytes from the packet, and replace the deleted data with a padding packet of the same length.
- the writing unit 64 writes the bit stream output from the stream rewriting unit 62 as a bit stream DV to the recording medium 72 in the storage device 70.
- FIG. 15 is a timing chart showing an example of processing in the high-speed dubbing apparatus 100 of FIG.
- FIG. 15 shows the contents of the processing performed for block 1, block 2, and block 3 and the time required for each processing.
- the blocks 13 to 13 are continuous portions of the bit stream recorded on the recording medium 12 in the storage device 10, and each volume is equal to the capacity of the buffer 30.
- each processing such as reading is performed in units of blocks.
- the processing in the high-speed dubbing apparatus 100 can be divided into three processings PI, P2, and P3.
- the process P1 is a process of reading a bit stream from the storage device 10 and storing the bit stream in the buffer 30, and includes a stream reading process by the reading unit 22 and a stream analyzing process by the stream analyzing unit 26.
- Process P2 is a process from reading the bit stream from the buffer 30 to storing it in the buffer 50.
- NV-PCK generation processing by unit 40 is included.
- the process P3 is a process from reading the bit stream from the buffer 50 to storing the bit stream in the storage device 70, and includes a stream rewriting process by the stream rewriting unit 62 and a stream writing process by the writing unit 64. It is.
- the high-speed dubbing apparatus 100 operates to perform the processes P1 to P3 in parallel as shown in FIG. Since the processes P1 to P3 performed in parallel are started at the same time, a wait state exists after the other processes until the process requiring the longest time among the processes P1 to P3 is completed.
- the longest time required for processing P1 (stream reading processing and stream analysis processing) among processing P1 to P3 corresponds to the time required for dubbing processing of one unit of block.
- the pipeline operation is performed for the processes P1 to P3.
- the time obtained by adding the time required for processing P1 to P3 is almost the time required for the dubbing processing of one unit of block. Dubbing can be performed at high speed.
- the read unit 22 and the storage device 10 and the write unit 64 and the storage device 70 are connected by, for example, an ATA (AT Attachment) or ATAPI (AT Attachment Packet Interface) interface.
- the read unit 22 and the write unit 64 transfer data to and from the storage devices 10 and 70 as fast as possible using commands such as UDMA (Ultra Direct Memory Access) in this interface.
- UDMA Ultra Direct Memory Access
- FIG. 16 is a timing chart showing an example of data transfer between the reading unit 22 and the storage device 10 in FIG.
- a command such as UDMA
- time is required for the command issue sequence before starting the transfer, and for the command end sequence after the transfer is completed.
- NV-PCK generation processing there is only one NV-PCK per VOBU. For this reason, if the size of the buffers 30 and 50 is less than 1 VOBU, NV-PCK generation processing may not be performed! / In some cases, processing efficiency may decrease due to overhead. Therefore, the size of the buffers 30 and 50 should be large enough to store at least 1 VOBU bit stream. Then, it can be ensured that NV-PCK generation processing is performed.
- the capacity of the buffer 30 is set to be smaller than the capacity of the cache memory 16. Then, the data transfer between the cache memory 16 and the read unit 22 is not divided, and the wait time can be reduced.
- the capacity of the buffer 30 is preferably equal to the capacity of the cache memory 16. It is possible to reduce the overhead associated with ATA and ATAPI commands while reducing wait time.
- the capacity of the buffer 50 is preferably equal to or less than the capacity of the cache memory 76, and particularly preferably equal to the capacity of the cache memory 76.
- FIGS. 17 (a), (b), and (c) are timing charts showing an example in which two processes are performed in parallel in the high-speed dubbing apparatus 100 of FIG. Referring to FIG. 15, when the high-speed dubbing apparatus 100 performs three processes in parallel, the two processes are performed in parallel as shown in FIGS. 17 (a)-(c). You may do so. Here, for simplicity, it is assumed that the time required for the processes P1 to P3 is the same.
- FIG. 17A shows a case where the processing P3 is performed in parallel during the processing P1 and P2 in FIG.
- FIG. 17B shows a case where the processing P2 is performed in parallel during the processing P3 and P1 in FIG.
- FIG. 17 (c) shows a case where the processing P1 is performed in parallel during the processing P2 and P3 of FIG.
- the stream analysis information SI may be stored in the recording medium 12 together with the bit stream.
- the stream analysis information SI is read from the recording medium 12 and used.
- the reading process from the storage device 10 or the writing process to the storage device 70 can be performed in parallel with other processes. Can be done. Therefore, a dubbing process that reads a bit stream conforming to the format of the DVD video recording standard, converts the bit stream into a bit stream conforming to the format of the DVD video standard, and writes the converted bit stream can be performed at high speed.
- FIG. 18 is a block diagram showing an example of a configuration of a high-speed dubbing device according to the second embodiment of the present invention.
- the high-speed dubbing apparatus 200 of FIG. 18 is different from the high-speed dubbing apparatus 100 of FIG. 1 in that a buffer check unit 80 is further provided, and the first and second buffers 30 and 50 are respectively replaced by first and second buffers 230 and 250. It has been replaced.
- the other components are the same as those described with reference to FIG.
- the buffer checker 80 reads data of a sufficient size from the storage device 10 when the reader 22 is not operating. At this time, data is transferred for each capacity of the cache memory 16 of the storage device 10.
- the buffer check unit 80 determines this size as the buffer size of the buffer 230, and outputs a signal indicating the buffer size to the buffer 230.
- the buffer 230 sets the capacity to the size specified by the signal indicating the buffer size.
- the buffer checker 80 determines the size with the highest appearance frequency as the buffer size of the buffer 230.
- the buffer checker 80 writes sufficiently large data to an unused area of the storage device 70 at a time when the writing unit 64 operates. At this time, data is transferred for each capacity of the cache memory 76 of the storage device 70. If the size of the data block transferred first is equal to the size of the data block transferred in the second and subsequent times, the buffer check unit 80 determines this size as the buffer size of the buffer 250, and A signal indicating the buffer size is output to the buffer 250. The knocker 250 sets the capacity to the size specified by the signal indicating the buffer size.
- the buffer checker 80 determines the most frequently occurring size in the buffer 250. Determine the buffer size.
- the buffer checking unit 80 determines the smaller buffer size as the buffer size of the buffers 230 and 250.
- the size of the buffer can be optimized according to the configuration of the storage device in which the bit stream is stored, so that the time required for dubbing can be reliably reduced. can do. Even when the storage device is changed, such as when the hard disk drive is replaced, the size of the buffer can be optimized.
- FIG. 19 is a block diagram showing an example of a configuration of a high-speed dubbing apparatus according to the third embodiment of the present invention.
- the high-speed dubbing apparatus 300 shown in FIG. 19 is different from the high-speed dubbing apparatus 100 shown in FIG. 1 in that a storage device 310 and a reading device 320 are provided instead of the storage device 10 and the reading device 20, respectively. And the second buffer 50 is not provided.
- the storage device 310 has substantially the same configuration as the storage device 10.
- the read device 320 includes a read unit 322, a filter 324, and a stream analysis unit 326. Other components are the same as those described with reference to FIG. 1, and thus description thereof is omitted.
- FIG. 20 is an explanatory diagram showing an example of the format of a bit stream output from the storage device 310 in FIG.
- the storage device 310 reads out the bit stream from the recording medium and The stream is output to the reading unit 322 as a bit stream DVN.
- Bit stream DVN is a bit stream that conforms to the normal DVD video recording standard, and is prefixed with NV—PCK (“N” in FIG. 20) before RDI—PCK (“R” in FIG. 20). It has been mashed.
- the recording medium to be read by the storage device 310 stores a bit stream having both packs of RDI-PCK and NV-PCK generated in advance.
- the RDI-PCK or NV-PCK may be stored in a different area from other packs of the bitstream.
- RDI-PCK and NV-PCK use the same values as common variables (SCR, etc.).
- the bit stream output from the reading unit 322 is also deleted from the NV_PCK to remove the stream.
- the filter 324 deletes the RDI-PCK from the bit stream output from the reading unit 322 to remove the RDI-PCK. Is output to the stream analysis unit 326.
- the stream analysis unit 326 is the same as the stream analysis unit 26 of Fig. 1 except that there is no need to generate data for NV-PCK generation.
- the dubbing speed is not limited by the process P2.
- the second buffer 50 in FIG. 1 that does not need to generate the NV-PCK is not required. . Since the NV-PCK is added, the bit stream stored in the storage device 310 increases, but the NV-PCK is added only once per VOBU (0.4 seconds or more). Absent.
- FIG. 21 is a block diagram showing an example of a configuration of a high-speed dubbing apparatus according to the fourth embodiment of the present invention.
- the high-speed dubbing apparatus 400 shown in FIG. 21 is different from the high-speed dubbing apparatus 100 shown in FIG. 1 in that first storage apparatuses 410 and 412 are provided instead of the first storage apparatus 10, and a lead apparatus 420 is provided instead of the lead apparatus 20. Things.
- the storage devices 410 and 412 are almost the same as the storage device 10 except that continuous data constituting the content is divided into two and stored.
- the read device 420 includes a read unit 422 and the stream analysis unit 26. Other components are the same as those described with reference to FIG. 1, and thus description thereof will be omitted.
- FIG. 22 is a block diagram showing a configuration of the reading unit 422 of FIG.
- the read unit 422 includes a read command issuing unit 421, a read command control unit 423, buffers 402 and 404, and a selector 406.
- the read command control unit 423 issues a read command RDI to the read command issuing unit 421, similarly to the read command control unit 23 of FIG.
- the read command issuing unit 421 issues the read commands RDC1 and RDC2 to the storage devices 410 and 412 at the same time.
- the storage device 410 Upon receiving the read command RDC1, the storage device 410 reads the content of the DVD video recording standard format and outputs the content to the buffer 402 as the bit stream DVR1. Upon receipt of the read command RDC2, the storage device 412 reads the content in the DVD video recording standard format and outputs it to the buffer 404 as a bit stream DVR2. That is, the storage devices 410 and 412 perform reading in parallel.
- the notifiers 402 and 404 output the input data to the selector 406.
- the selector 406 alternately selects the data of the notifiers 402 and 404 and outputs the data to the stream analyzing unit 26 as a bit stream conforming to the DVD video recording standard. Even if the read commands RDC1 and RDC2 are issued at the same time, the storage devices 410 and 412 do not always end the read processing at the same time. Have.
- the read command issuing unit 421 issues an end signal when both the data transmission to the buffer 402 and the data transmission to the buffer 404 have been completed. ENS is read and output to the command control unit 423.
- FIG. 23 is an explanatory diagram showing the storage state of content in the DVD video recording standard format in the two storage devices 410 and 412 in FIG.
- data is managed in units of 32 bits
- the storage device 410 stores the upper 16 bits of the 32-bit data
- the storage device 412 stores the 32-bit data.
- the lower 16 bits of the data are stored!
- the upper 16-bit data DT1A and the lower 16-bit data DT1B constituting the 32-bit data are stored in the storage devices 410 and 412, respectively, and the upper 16-bit data DT1A and the lower 16-bit data DT1B constituting the next 32-bit data are stored.
- Bit data DT2A and lower 16-bit data DT2B are stored in storage devices 410 and 412, respectively.
- continuous 16-bit data DT1A, DT1B, DT2A, DT2B,... are stored in storage devices 410, 412 alternately.
- the read command issuing unit 421 halves the address specified in the received read command RDI and specifies the address in the read commands RDC1 and RDC2.
- FIG. 24 is a timing chart showing an example of processing in high-speed dubbing apparatus 400 in FIG.
- the upper part of FIG. 24 also shows a timing chart of the high-speed dubbing apparatus 100 of FIG. Since the high-speed dubbing device 400 reads the data from the storage devices 410 and 412 in parallel at the same time, the time required for reading the stream is almost halved, and the dubbing process can be performed faster than the high-speed dubbing device 100 in FIG. Can
- FIG. 25 is a block diagram showing an example of a configuration of a high-speed dubbing apparatus according to the fifth embodiment of the present invention.
- the high-speed dubbing apparatus 500 shown in FIG. 25 is similar to the high-speed dubbing apparatus 100 shown in FIG.
- the first storage device 510, 512 is provided in place of the first storage device 10
- the lead device 520 is provided in place of the lead device 20
- the sofa 30 is provided in place of the sofa 530, 532. 536.
- the storage devices 510 and 512 are substantially the same as the storage device 10 except that continuous data constituting the content is divided into two and stored.
- the reading device 520 includes a reading unit 522 and stream analyzing units 526 and 527. Other components are the same as those described with reference to FIG. 1, and thus description thereof will be omitted.
- FIG. 26 is an explanatory diagram showing a storage state of contents in the DVD video recording standard format in the two storage devices 510 and 512 in FIG.
- the storage device 510 stores odd-numbered block data
- the storage device 512 stores even-numbered block data. That is, successive blocks are stored in the storage devices 510 and 512 alternately.
- each block is aligned in a high-speed dubbing processing unit (VOBU). That is, the size of each block is an integral multiple of the size of the VOBU.
- VOBU high-speed dubbing processing unit
- FIG. 27 is a block diagram showing a configuration of the reading unit 522 in FIG.
- the read unit 522 includes a read command issuing unit 521 and a read command control unit 523.
- the read command control section 523 issues a read command RDI to the read command issuing section 521.
- the read command issuing unit 521 issues a read command RDC1 to the storage device 510 if the specified address is an address indicating an odd block, and the specified address is an even block. If the address indicates, the read command RDC2 is issued to the storage device 512.
- the storage device 510 Upon receiving the read command RDC1, the storage device 510 reads the content in the DVD video recording standard format, and outputs the content to the stream analysis unit 526 as a bit stream DVR1. Upon receiving the read command RDC2, the storage device 512 reads the content in the DVD video recording standard format and outputs the content to the stream analysis unit 527 as a bit stream DVR2.
- the read command issuing unit 521 outputs the end signal ENS every time the read command RDC1 or RDC2 is issued. Output to control unit 523.
- the stream analysis units 526 and 527 analyze the bit streams DVR1 and DVR2, respectively, and output the obtained stream analysis information to the selector 536. Also, the stream analyzers 526 and 527 output the bit stream to the buffers 530 and 532, respectively.
- the selector 536 selects stream analysis information output by one of the stream analysis units 526 and 527, and outputs the selected information to the NV-PCK generation unit 40 and the stream rewriting unit 62.
- the buffers 530 and 532 output the input bit stream to the selector 534.
- the selector 534 selects the bit stream selected by the selector 536 from among the stream analyzers 526 and 527, and outputs the selected bit stream to the NV-PCK generator 40.
- FIG. 28 is a timing chart showing an example of processing in high-speed dubbing apparatus 500 of FIG. In the high-speed dubbing apparatus 100 of FIG. 1, as shown in FIG. 28, unless the stream analysis for one block is completed, the stream of the next block cannot be read. In addition, if the time required for stream reading and stream analysis is longer than the time required for stream rewriting and stream storage, or the time required for NV-PCK generation, a wait time will occur.
- the stream reading and stream analysis of the next block are performed before the stream reading and stream analysis of one block are completed. Therefore, the wait time can be reduced.
- FIG. 29 is a block diagram showing an example of a configuration of a high-speed dubbing apparatus according to the sixth embodiment of the present invention.
- the high-speed dubbing apparatus 600 shown in FIG. 29 is different from the high-speed dubbing apparatus 100 shown in FIG. 1 in that an NV-PCK generation section 640 and a writing apparatus 660 are provided instead of the NV-PCK generation section 40 and the writing apparatus 60.
- a part 668 is further provided.
- the writing device 660 includes a stream rewriting unit 662 and a writing unit 64. The other components are the same as those described with reference to FIG.
- the stream rewriting device 662 adds a PES-extension-field to the NV-PCK that is input first when a stream of the DVD video standard format is input, and replaces the SCR. This is different from the stream rewriting device 62 of FIG. NV
- the PCK generation unit 640 performs correction processing of the NV-PCK and outputs when a stream of the DVD video standard format is input. This is different from the NV-PCK generation unit 40 in FIG.
- the NV-PCK generator 640 When a DVD video recording standard format stream is to be dubbed at a high speed, the NV-PCK generator 640 generates the NV-PCK and generates the buffer 50 in the same manner as the NV-PCK generator 40 in FIG. The stream is output to the stream rewriting unit 662 via the interface.
- the stream rewriting unit 662 performs rewriting processing of SCR, PTS, and DTS to convert the input stream into a DVD video standard format stream. Convert and output.
- the stream of the DVD video standard format output from the stream rewriting unit 662 is also output to the writing unit 668 in addition to the writing unit 64.
- the writing unit 668 writes the input DVD video format stream into the storage device 10. At this time, the storage device 10 writes in an area different from the area in which the stream of the DVD-Video recording standard format before conversion is stored.
- the converted stream recorded in the storage device 10 is read out by the reading unit 22. Is read, and the writing unit writes the data into the storage device 70 as it is. That is, in this case, the NV-PCK generation unit 640 and the stream rewriting unit 662 do not rewrite the stream.
- the NV-PCK generation unit 640 and the stream rewriting unit 662 The following processing is performed. That is, the NV—PCK generation unit 640 corrects the time information such as SCR, PTS, and DTS included in the NV—PCK in the converted stream read by the read unit 22 and The stream is sent to the stream rewriting unit 662 via the buffer 50. The stream rewriting unit 662 deletes the PES-extension-field as necessary so that the PES-extension-field exists only in the first pack of the content of each video, each audio, and each sub-video.
- the stream whose format has been converted is stored in the storage apparatus 10 and used as a cache. Can be reduced, and the dubbing speed can be improved when dubbing is performed multiple times.
- FIG. 30 is a block diagram showing an example of a configuration of a high-speed dubbing apparatus according to the seventh embodiment of the present invention.
- a high-speed dubbing apparatus 700 in FIG. 30 is different from the high-speed dubbing apparatus 100 in FIG. 1 in that a read apparatus 720 and a write apparatus 760 are provided instead of the read apparatus 20 and the write apparatus 60.
- the reading device 720 includes a reading unit 22 and a stream analyzing unit 726.
- the writing device 760 includes a stream rewriting unit 62, a filter 766, and a writing unit 64.
- the other components are the same as those described with reference to FIG.
- the stream analysis unit 726 is different from the stream analysis unit 26 in Fig. 1 having the CGMS monitoring function shown in Fig. 5.
- the stream analysis unit 726 analyzes the stream of the input DVD video recording standard format stream, outputs the stream analysis information SI in the same manner as the stream analysis unit 26, analyzes the CGMS, and obtains the CGMS analysis result CI obtained. Is output to the filter 766.
- the filter 766 outputs the output of the stream rewriting unit 62 as it is if the CGMS analysis result CI indicates that copying is possible! /, And if the CGMS analysis result CI indicates that copying is not possible, The output of the rewriting unit is not output. Also, the filter 766 detects a stream that is indicated to be uncopyable, detects a stream, and then inputs a stream that is indicated to be copy-enabled, and then detects a stream that can be copied. Re-correct SCR, PTS, DTS.
- FIG. 31 is an explanatory diagram of the SCR recorrection.
- FIG. 31 shows a stream to be subjected to high-speed dubbing.
- the first part is copyable
- the second part is not copyable
- the third part is copyable.
- the first SCR is Ta
- the SCRs of subsequent packs are
- a non-copyable stream is subsequently input, this non-copyable stream is not output to the outside. Further, when a stream that can be copied is subsequently input, the time information becomes discontinuous in the stream output to the outside because the SCR corresponding to the stream that cannot be copied is not included. If the time information becomes discontinuous, it may not be possible to play the stream.
- the filter 766 holds the SCR (Tb) of the first pack, and when a stream that can be copied (the SCR of the first pack is Tc) is input again.
- the SCR is corrected and output according to. Then, discontinuity of time information between streams of content that can be copied can be prevented.
- the filter 766 performs the same processing for PTS and DTS! /.
- the high-speed dubbing device can read a DVD-Video standard bit stream, convert it to a DVD-Video standard bit stream, and write it, at high speed. This is useful for DVD recorders and the like that dub images recorded on a recording medium to another recording medium.
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Abstract
Description
Claims
Priority Applications (4)
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US10/594,747 US8055120B2 (en) | 2004-03-29 | 2005-01-17 | High speed dubbing apparatus |
JP2006511392A JP4370323B2 (ja) | 2004-03-29 | 2005-01-17 | 高速ダビング装置 |
CN2005800105303A CN101080775B (zh) | 2004-03-29 | 2005-01-17 | 高速转录装置 |
EP05703726A EP1739673A1 (en) | 2004-03-29 | 2005-01-17 | High speed dubbing apparatus |
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JP2004096328 | 2004-03-29 | ||
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US8254761B2 (en) * | 2007-03-07 | 2012-08-28 | Rovi Solutions Corporation | Copying digital content by emulating playing of a recording medium by a player |
US8554055B2 (en) | 2007-05-31 | 2013-10-08 | Sony Corporation | Editing device, editing method and editing program, and data processing device, data processing method and data processing program |
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US7653778B2 (en) | 2006-05-08 | 2010-01-26 | Siliconsystems, Inc. | Systems and methods for measuring the useful life of solid-state storage devices |
US8549236B2 (en) | 2006-12-15 | 2013-10-01 | Siliconsystems, Inc. | Storage subsystem with multiple non-volatile memory arrays to protect against data losses |
US7596643B2 (en) * | 2007-02-07 | 2009-09-29 | Siliconsystems, Inc. | Storage subsystem with configurable buffer |
CN102034477A (zh) * | 2009-10-08 | 2011-04-27 | 鸿富锦精密工业(深圳)有限公司 | 电子装置及音频数据的版权保护方法 |
US10951729B2 (en) * | 2017-02-13 | 2021-03-16 | Brightcove Inc. | Adapting playback settings based on change history |
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Publication number | Priority date | Publication date | Assignee | Title |
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US8254761B2 (en) * | 2007-03-07 | 2012-08-28 | Rovi Solutions Corporation | Copying digital content by emulating playing of a recording medium by a player |
US8554055B2 (en) | 2007-05-31 | 2013-10-08 | Sony Corporation | Editing device, editing method and editing program, and data processing device, data processing method and data processing program |
Also Published As
Publication number | Publication date |
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EP1739673A1 (en) | 2007-01-03 |
US20070201814A1 (en) | 2007-08-30 |
JPWO2005093746A1 (ja) | 2007-08-16 |
US8055120B2 (en) | 2011-11-08 |
JP4370323B2 (ja) | 2009-11-25 |
CN101080775B (zh) | 2010-11-24 |
CN101080775A (zh) | 2007-11-28 |
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