Source: http://www.google.com/patents/US6144742?dq=7,633,076
Timestamp: 2014-08-21 12:22:35
Document Index: 404925934

Matched Legal Cases: ['application No. 96915172', 'application No. 95', 'application No. 95', 'application No. 95', 'application No. 95', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11']

Patent US6144742 - Optical disk, an optical disk barcode forming method, an optical disk ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsDisclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in PCA area of an optical disk. When playing back the thus manufactured...http://www.google.com/patents/US6144742?utm_source=gb-gplus-sharePatent US6144742 - Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskAdvanced Patent SearchPublication numberUS6144742 APublication typeGrantApplication numberUS 09/401,669Publication dateNov 7, 2000Filing dateSep 22, 1999Priority dateMay 16, 1996Fee statusPaidPublication number09401669, 401669, US 6144742 A, US 6144742A, US-A-6144742, US6144742 A, US6144742AInventorsYoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsuro MoriyaOriginal AssigneeMitsushita Electric Industrial Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (45), Non-Patent Citations (12), Referenced by (8), Classifications (15), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetOptical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskUS 6144742 AAbstract Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
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