# US 2010/0166387 A1 · Method and apparatus for playing video data of high bit rate format by a player capable of playing video data of low bit rate format > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0166387 A1 - Document ID: US20100166387A1 - Status: Published application - Kind: A1 - Application number: 12/438,026 - Filed: 2007-08-24 - Published: 2010-07-01 - Earliest claimed: 2006-09-05 - Assignees: Panasonic Corporation - Inventors: Yasushi Miyake; Chia Ching Ooi; Ettikan Kandasamy Karuppiah; Pek Yew Tan - Web page: https://patentgrep.com/patent/US20100166387A1 ## CPC - G11B 27/105: {of operating discs} - H04N 5/85: on discs or drums - H04N 9/8042: {involving data reduction} - H04N 19/146: Data rate or code amount at the encoder output - H04N 19/40: using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream - H04N 19/44: Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder - H04N 19/61: in combination with predictive coding - G11B 2220/2541: Blu-ray discs; Blue laser DVR discs - G11B 2220/2566: DVDs belonging to the minus family, i.e. -R, -RW, -VR - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A player which is capable of playing a video data of low bit rate format, e.g., DVD-VR format, can not play a video data of high bit rate format, e.g., BD-RE format unless the video data is transcoded. Transcoding of video data generally requires a large size storage area. Based on an original navigation information for the video data of high bit rate format, a predictive navigation information for the video data of low bit rate format is generated. Using the original and predictive navigation information, the transcoding is done by sections. ## Claims ### Claim 1 A method for playing a video data of high bit rate format stored in a storage device by a player which is capable of playing a video data of low bit rate format, said method comprising: reading an original navigation information from the video data of high bit rate format; converting the original navigation information into a predictive navigation information which is applicable to the video data of low bit rate format; requesting, based on the predictive navigation information, a section of the video data of low bit rate format in a low bit rate byte information, said low bit rate byte information including a starting byte position and an end byte position of the section of the video data of low bit rate format for playing by the player; converting, based on the predictive navigation information and the original navigation information, the low bit rate byte information into a high bit rate byte information, said high bit rate byte information including a starting byte position and an end byte position of the section of the video data of high bit rate format; retrieving, based on the high bit rate byte information, the section of the video data of high bit rate format from the storage device; and transcoding the section of the video data of high bit rate format to a section of the video data of low bit rate format. ### Claim 2 An apparatus for playing a video data of high bit rate format stored in a storage device by a player which is capable of playing a video data of low bit rate format, said apparatus comprising: a CPU (201, 301) which is capable of doing the following operations: reading an original navigation information from the video data of high bit rate format; converting the original navigation information into a predictive navigation information which is applicable to the video data of low bit rate format; requesting, based on the predictive navigation information, a section of the video data of low bit rate format in a low bit rate byte information, said low bit rate byte information including a starting byte position and an end byte position of the section of the video data of low bit rate format for playing by the player; converting, based on the predictive navigation information and the original navigation information, the low bit rate byte information into a high bit rate byte information, said high bit rate byte information including a starting byte position and an end byte position of the section of the video data of high bit rate format; retrieving, based on the high bit rate byte information, the section of the video data of high bit rate format from the storage device; transcoding the section of the video data of high bit rate format to a section of the video data of low bit rate format; and a decoder (314) for decoding the video data of low bit rate format. ### Claim 3 A method for playing a video data of high bit rate format stored in a storage device of a server (DMS) by a player (DMP) which is capable of playing a video data of low bit rate format, said method comprising: reading an original navigation information from the video data of high bit rate format in said server; converting the original navigation information into a predictive navigation information which is applicable to the video data of low bit rate format in said server; transferring said predictive navigation information to said player; requesting by said player, based on the predictive navigation information, a section of the video data of low bit rate format in a low bit rate byte information, said low bit rate byte information including a starting byte position and an end byte position of the section of the video data of low bit rate format for playing by the player; converting, based on the predictive navigation information and the original navigation information, the low bit rate byte information into a high bit rate byte information, said high bit rate byte information including a starting byte position and an end byte position of the section of the video data of high bit rate format; retrieving, based on the high bit rate byte information, the section of the video data of high bit rate format from the storage device in said server; and transcoding the section of the video data of high bit rate format to a section of the video data of low bit rate format. ### Claim 4 (depends on 3) The method as claimed in claim 3, wherein said converting the low bit rate byte information comprises converting the low bit rate byte information into a time domain information which is further converted to the high bit rate byte information. ### Claim 5 (depends on 3) The method as claimed in claim 3, further comprising range map information generating based on the predictive navigation information and the original navigation information, said range map information containing low bit rate byte information and corresponding high bit rate byte information. ### Claim 6 (depends on 3) The method as claimed in claim 3, further comprising padding of the section of the video data of low bit rate format. ### Claim 7 (depends on 3) The method as claimed in claim 3, further comprising conversion condition information generating, said conversion condition information containing at least the high bit rate which is an attribute of the video data of high bit rate format, and the low bit rate which is an attribute of the video data of low bit rate format. ### Claim 8 (depends on 3) The method as claimed in claim 3, wherein said video data of high bit rate format is a video data of BD-RE format. ### Claim 9 (depends on 3) The method as claimed in claim 3, wherein said video data of low bit rate format is a video data of DVD-VR format. ### Claim 10 (depends on 3) The method as claimed in claim 3, wherein said navigation information is an index information. ### Claim 11 (depends on 3) The method as claimed in claim 3, wherein said navigation information is an IFO. ### Claim 12 An apparatus for playing a video data of high bit rate format stored in a storage device of a server (DMS) by a player (DMP) which is capable of playing a video data of low bit rate format, said apparatus comprising: a first CPU (201) provided in said server and capable of doing the following operations: reading an original navigation information from the video data of high bit rate format in said server; converting the original navigation information into a predictive navigation information which is applicable to the video data of low bit rate format in said server; transferring said predictive navigation information to said player; and a second CPU (301) provided in said player and capable of doing the following operations: requesting by said player, based on the predictive navigation information, a section of the video data of low bit rate format in a low bit rate byte information, said low bit rate byte information including a starting byte position and an end byte position of the section of the video data of low bit rate format for playing by the player; at least one of said first CPU and said second CPU capable of doing the following operation: converting, based on the predictive navigation information and the original navigation information, the low bit rate byte information into a high bit rate byte information, said high bit rate byte information including a starting byte position and an end byte position of the section of the video data of high bit rate format; said first CPU capable of doing the following operation: retrieving, based on the high bit rate byte information, the section of the video data of high bit rate format from the storage device in said server; and at least one of said first CPU and said second CPU capable of doing the following operation: transcoding the section of the video data of high bit rate format to a section of the video data of low bit rate format. ### Claim 13 (depends on 12) The apparatus as claimed in claim 12, where in said operation of converting the low bit rate byte information is done by said first CPU. ### Claim 14 (depends on 12) The apparatus as claimed in claim 12, wherein said operation of transcoding is done by said first CPU. ### Claim 15 (depends on 12) The apparatus as claimed in claim 12, wherein said operation of converting the low bit rate byte information comprises converting the low bit rate byte information into a time domain information which is further converted to the high bit rate byte information. ### Claim 16 (depends on 12) The apparatus as claimed in claim 12, wherein at least one of said first CPU and said second CPU is capable of doing the operation of range map information generating based on the predictive navigation information and the original navigation information, said range map information containing low bit rate byte information and corresponding high bit rate byte information. ### Claim 17 (depends on 12) The apparatus as claimed in claim 12, wherein at least one of said first CPU and said second CPU is capable of doing the operation of padding of the section of the video data of low bit rate format. ### Claim 18 (depends on 12) The apparatus as claimed in claim 12, wherein at least one of said first CPU and said second CPU is capable of doing the operation of conversion condition information generating, said conversion condition information containing at least the high bit rate which is an attribute of the video data of high bit rate format, and the low bit rate which is an attribute of the video data of low bit rate format. ### Claim 19 (depends on 12) The apparatus as claimed in claim 12, wherein said video data of high bit rate format is a video data of BD-RE format. ### Claim 20 (depends on 12) The apparatus as claimed in claim 12, wherein said video data of low bit rate format is a video data of DVD-VR format. ### Claim 21 (depends on 12) The apparatus as claimed in claim 12, wherein said navigation information is an index information. ### Claim 22 (depends on 12) The apparatus as claimed in claim 12, wherein said navigation information is an IFO.