Optical disc, recording apparatus method, and reproduction...

Dynamic information storage or retrieval – Binary pulse train information signal – Format arrangement processing for auxiliary information

Reexamination Certificate

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C369S275300, C369S047190

Reexamination Certificate

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11253682

ABSTRACT:
An optical disc has a plurality of sectors, where each of the plurality of sectors includes a plurality of frames. A sub information bit value of “0” or “1” is assigned to the plurality of frames constituting a sector, excluding the first and last frames. Edge positions are displaced so that leading/lagging errors appear in accordance with a certain rule when data fields of the frames to which the sub information bit value “1” is assigned are read. Edge positions are displaced so that leading/lagging errors appear in accordance with a reversal of the certain rule when data fields of the frames to which the sub information bit value “0” is assigned are read.

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