Recording medium, data transmission apparatus, data receiver, and optical disk unit
AssigneeSony Corporation
InventorsKensuke Fujimoto, Masahiro Shigenobu, Hideki Mawatari
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Abstract
This invention relates to a recording medium, data transmission apparatus, data receiver, and optical disk unit, and particularly applies to a system which transmits video data and other data or records them on an optical disk in a predetermined block unit, and permits each frame to be easily and correctly located by low volumes of identification data. At least contiguous synchronization patterns or/and contiguous synchronization patterns with one synchronization pattern interleaved therebetween are assigned with unique combinations.
Claims23
A recording medium comprising data recorded in a block, wherein said block is split into a plurality of frames and a plurality of synchronization patterns are successively assigned to said plurality of frames to record said data, said plurality of synchronization patterns being fewer in type than a quantity of said plurality of frames constituting said block;
- and
- wherein, in said block, said plurality of synchronization patterns are assigned in such a manner that when contiguous frames of said plurality of frames are arbitrarily selected, a combination of said plurality of synchronization patterns assigned to said contiguous frames is different from combinations of said plurality of synchronization patterns assigned to any other contiguous frames of said plurality of frames.
A data generation apparatus for generating data in a block from input data, comprising:
- a memory configured to store a plurality of synchronization patterns;
- and
- a control circuit, coupled to said memory, configured to split said input data into a plurality of frames, and to successively assign said plurality of synchronization patterns to said plurality of frames to form said block,
- wherein said plurality of synchronization patterns are fewer in type than a quantity of said plurality of frames, and
- wherein, in said block, said plurality of synchronization patterns are assigned in such a manner that, when contiguous frames of said plurality of frames are arbitrarily selected, a combination of said plurality of synchronization patterns assigned to said contiguous frames is different from combinations of said plurality of synchronization patterns assigned to any other contiguous frames of said plurality of frames.
A data reproducer for reproducing data generated in a block, wherein said block was split into a plurality of frames and a plurality of synchronization patterns were successively assigned to said plurality of frames at generation, said plurality of synchronization patterns being fewer in type than a quantity of said plurality of frames constituting said block, said data reproducer comprising:
- a memory configured to store a contiguous subset of said plurality of synchronization patterns, wherein the contiguous subset of synchronization patterns are associated with a contiguous subset of said plurality of frames;
- and
- a frame number decoder, coupled to said memory, configured to determine one or more frame numbers corresponding to the contiguous subset of synchronization patterns and thereby to the contiguous subset of frames,
- wherein, in said block, said plurality of synchronization patterns were assigned in such a manner that, when contiguous frames of said plurality of frames are arbitrarily selected, a combination of said plurality of synchronization patterns assigned to said contiguous frames is different from combinations of said plurality of synchronization patterns assigned to any other contiguous frames of said plurality of frames.
An optical disk unit for recording data in a block from input data, comprising:
- a memory configured to store a plurality of synchronization patterns;
- and
- a control circuit, coupled to said memory, configured to split said input data into a plurality of frames, and to successively assign said plurality of synchronization patterns to said plurality of frames to form said block,
- wherein said plurality of synchronization patterns are fewer in type than a quantity of said plurality of frames, and
- wherein, in said block, said plurality of synchronization patterns are assigned in such a manner that, when contiguous frames of said plurality of frames are arbitrarily selected, a combination of said plurality of synchronization patterns assigned to said contiguous frames is different from combinations of said plurality of synchronization patterns assigned to any other contiguous frames of said plurality of frames.
An optical disk unit for reproducing data recorded on an optical disk in a block, wherein said block was split into a plurality of frames and a plurality of synchronization patterns were successively assigned to said plurality of frames at recording, said plurality of synchronization patterns being fewer in type than a quantity of said plurality of frames constituting said block, said optical disk unit comprising:
- a memory configured to store a contiguous subset of said plurality of synchronization patterns, wherein the contiguous subset of synchronization patterns are associated with a contiguous subset of said plurality of frames;
- and
- a frame number decoder, coupled to said memory, configured to determine one or more frame numbers corresponding to the contiguous subset of synchronization patterns and thereby to the contiguous subset of frames,
- wherein, in said block, said plurality of synchronization patterns were assigned in such a manner that, when contiguous frames of said plurality of frames are arbitrarily selected, a combination of said plurality of synchronization patterns assigned to said contiguous frames is different from combinations of said plurality of synchronization patterns assigned to any other contiguous frames of said plurality of frames.
The optical disk unit according to said 22, wherein, in said block, said plurality of synchronization patterns are assigned in such a manner that, when three contiguous frames of said plurality of frames are arbitrarily selected, a combination of said plurality of synchronization patterns assigned to first and last frames of said three contiguous frames is different from combinations of said plurality of synchronization patterns assigned to first and last frames of any other three contiguous frames of said plurality of frames.
Dependencies are inferred from the claim text.