Data recording/reproducing apparatus and method corresponding to a plurality of data formats, and data recording medium
AssigneeSony Corporation
InventorsYoichiro Sako, Tamotsu Yamagami
Life of this patent
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Abstract
A data recording apparatus is constructed by: an input unit for receiving first and second digital data in which a ratio of sector sizes is not equal to an integer ratio; a block segmenting unit for inserting first data nA and second data mB (n and m are integers of 2 or more and n.noteq.m) when it is assumed that a sector size of first data is set to A and a sector size of second data is set to B and for forming data of a block structure; a recording processing unit for performing an error correction encoding and a digital modulation to the data of the block structure; and a recording unit for recording the recording data from the recording processing unit to a data recording medium.
Claims11
A data recording apparatus for recording digital data to a data recording medium, comprising
- a recording processing circuit which can process the digital data divided on the basis of predetermined units having two or more different sizes,
- wherein said recording processing circuit has an encoder for performing an encoding for an error correction, a modulating circuit for performing a digital modulation to the data which was error correction encoded, and a sync signal adding circuit to which an output signal of said modulating circuit is supplied and which adds a sync signal to said output signal every said predetermined units, and
- said sync signal adding circuit adds sync signals corresponding to the sites of said predetermined units.
A data recording method for recording digital data to a data recording medium, having
- a step of a recording process which can process the digital data divided on the basis of predetermined units having two or more different sizes,
- wherein the step of said recording process includes an encoding step of performing an error correction encoding, a modulating step of digital modulating the error correction encoded data, and a step of adding a sync signal to said modulated signal, and
- in said step of adding said sync signal, in order to identify a size of said predetermined unit, one of a plurality of kinds of sync signals is added to said data in correspondence to said size.
Dependencies are inferred from the claim text.