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US 10,395,689 B2Granted
Optical disc apparatus
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMasaru Kaida, Motoshi Ito, Daisuke Shimoda, Naohiro Kimura
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Abstract
An optical disc apparatus includes: a controller configured to acquire information of an access result and access positions on an optical disc when an optical disc drive unit configured to optically access an optical disc optically accesses the optical disc; and a storage configured to store the information acquired by the controller.
Claims7
An optical disc apparatus comprising:
- a controller configured to acquire information of an access result indicating a result of an optical access by an optical disc drive unit to an optical disc and information of an access position indicating a position of the optical access on the optical disc;
- and
- a storage configured to store the information acquired by the controller, wherein
- when an error occurs in an optical access to a certain recording layer of the optical disc, the controller further acquires information of an access result indicating a result of an optical access to another recording layer,
- a portion of the another recording layer, to which the controller acquires information of the access result indicating the result of the optical access, is corresponding to a substantially same radius or phase angle position as a position where the error occurred, and
- the controller acquires information of the access result without recording data.
3 more elements
Dependencies are inferred from the claim text.