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:
Jan. 14, 2003
Filed:
Mar. 23, 2001
Ikuo Aoki, Yokohama, JP;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
In an optical disc having tracks for recording user data such as a rewritable type optical disc using a phase change medium or a magneto-optical medium, or a write-once type optical disc using a pigment based medium, a wobble portion waved in a radial direction of the optical disc and a non wobble portion which is not waved are provided on the tracks, sub information which is data other than the user data is recorded on the tracks by using a combination of the wobble portion and the non wobble portion, a logic value of each bit is represented by a pair of the wobble portion and the non wobble portion, and the phase of wave in the wobble portion when a bit is a logical value of “0” and the phase of wave in the wobble portion when a bit is a logical value of “1” are different.