The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2018
Filed:
Mar. 24, 2017
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/0055 (2006.01); G11B 7/005 (2006.01); G11B 20/10 (2006.01); G11B 7/0045 (2006.01); G11B 7/0037 (2006.01); G11B 7/006 (2006.01);
U.S. Cl.
CPC ...
G11B 7/0055 (2013.01); G11B 7/005 (2013.01); G11B 20/10 (2013.01); G11B 20/1024 (2013.01); G11B 7/006 (2013.01); G11B 7/0037 (2013.01); G11B 7/00458 (2013.01); G11B 2020/10851 (2013.01); G11B 2020/10898 (2013.01);
Abstract
Upon receiving an erase command for data recorded in a write-once optical disc, an information recording device corrupts data in an information area (synchronization signal in Run-in, frame synchronization signal, address information and the like), in an erased area on the optical disc, in which information necessary for synchronization of reproducing data by overwriting the data in the information area with an erasing pattern. The erased area is specified by an erase starting position and a size of data to be erased. In this way, the information recording device erases the data in the erased area.