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AssigneeHitachi Consumer Electronics Co., Ltd.
InventorTaku Hoshizawa
Estimating the term…
When recording layers were provided on both the front and back sides of an optical disk in order to increase the recording capacity, whether the reproducing surface of the optical disk taken out of the cartridge was the front side or the back side could not be determined. This problem can be solved by adding to the BCA, in addition to disk identification information: type information indicating whether a recording surface is provided on one side or both sides; side information indicating whether the surface with which reproduction is being performed is side A or side B; recording layer quantity information indicating whether the disk has a single layer or a double layer; information indicating the areas other than the BCA and the directions in which data on the read-in, data zones, and read-out are recorded/reproduced; and information indicating the presence/absence of a disk cartridge.
An optical disc having recording surfaces on its both surfaces, comprising:
An optical disc recording/reproducing device in which data areas on both surfaces are used as one logical volume in a case when BCA codes of the optical disc on the front and rear surfaces contain disc identification information, information indicating that the disc is a double-sided disc, and information for identifying surface directions.
An optical disc recording/reproducing device
An optical disc recording/reproducing device
An optical disc recording/reproducing device
A method of recording information on an optical disc, the optical disc having recording surfaces on its both surfaces, the optical disc having a BCA in which information about the optical disc is recorded and a lead-in area located on a peripheral side of the BCA and having information about the optical disc recorded therein, the BCA being divided into a plurality of blocks, the method comprising the steps of:
A method of reproducing information from an optical disc, the optical disc having recording surfaces on its both surfaces, the optical disc having a BCA in which information about the optical disc is recorded and a lead-in area located on a peripheral side of the BCA and having information about the optical disc recorded therein, the BCA being divided into a plurality of blocks;
Dependencies are inferred from the claim text.