Magnetic tape recording apparatus and method, magnetic tape playback apparatus and method, format for magnetic tape, and storage medium product
AssigneeSony Corporation
InventorsFumiyoshi Abe, Yoichiro Tauchi, Yasutaka Kotani, Toshinori Kozai
Life of this patent
Estimating the term…
Abstract
Pictures in number indicated by a value (3 in one example) of M in a GOP structure are set as one unit. AUX data (denoted by U in FIG. 32) related to those pictures, audio data (denoted by A in FIG. 32) corresponding to those pictures, and AUX data (denoted by X in FIG. 32) related to the audio data are arranged together at the head of 16 tracks that undergo interleaving. Subsequent to those data, one unit of pictures (3 pictures in one example) is arranged. An HD video signal and an HD audio signal can be recorded and played back with certainty.
Claims5
1-7. (canceled)
A format for a magnetic tape on which digital data is recorded with a rotary head, said digital data including:
- first group data comprising video data, audio data or search data, or comprising auxiliary data having a variable length and related to the video data, the audio data or the search data, and
- second group data containing a subcode related to the video data, the audio data or the search data are recorded;
- wherein said first group data and said second group data are continuously arranged on tracks of said magnetic tape without being spaced away from each other, and said auxiliary data is recorded together for each unit comprising a predetermined number of pictures.
A magnetic tape playback apparatus for playing back, with a rotary head, a magnetic tape on which first group data comprising compressed high-definition or standard-definition video data, audio data or search data, or comprising auxiliary data having a variable length and related to the video data, the audio data or the search data, and second group data containing a subcode related to said first group data are recorded such that said first group data and said second group data are continuously arranged on tracks without being spaced away from each other, and wherein said auxiliary data is recorded together for each unit comprising a predetermined number of pictures. said apparatus comprising:
- acquiring means for acquiring the auxiliary data, as said first group data, from data reproduced from said magnetic tape with said rotary head;
- and
- decompressing means for decompressing the compressed high-definition video data, which is contained in the data reproduced from said magnetic tape with said rotary head, by using the auxiliary data acquired by said acquiring means.
A magnetic tape playback method used in a magnetic tape playback apparatus for playing back, with a rotary head, a magnetic tape on which first group data comprising compressed high-definition or standard-definition video data, audio data or search data, or comprising auxiliary data having a variable length and related to the video data, the audio data or the search data, and second group data containing a subcode related to said first group data are recorded such that said first group data and said second group data are continuously arranged on tracks without being spaced away from each other, and wherein said auxiliary data is recorded together for each unit comprising a predetermined number of pictures, said method comprising the steps of:
- an acquiring step of acquiring the auxiliary data, as said first group data, from data reproduced from said magnetic tape with said rotary head;
- and
- a decompressing step of decompressing the compressed high-definition video data, which is contained in the data reproduced from said magnetic tape with said rotary head, by using the auxiliary data acquired by processing in said acquiring step.
A storage medium product storing a computer-readable program for controlling a magnetic tape playback apparatus for playing back, with a rotary head, a magnetic tape on which first group data comprising compressed high-definition or standard-definition video data, audio data or search data, or comprising auxiliary data having a variable length and related to the video data, the audio data or the search data, and second group data containing a subcode related to said first group data are recorded such that said first group data and said second group data are continuously arranged on tracks without being spaced away from each other, and wherein said auxiliary data is recorded together for each unit comprising a predetermined number of pictures, said program comprising the steps of:
- an acquiring step of acquiring the auxiliary data, as said first group data, from data reproduced from said magnetic tape with said rotary head;
- and
- a decompressing step of decompressing the compressed high-definition video data, which is contained in the data reproduced from said magnetic tape with said rotary head, by using the auxiliary data acquired by processing in said acquiring step.
Dependencies are inferred from the claim text.