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:
Apr. 08, 2003
Filed:
Jan. 14, 2000
Applicant:
Inventor:
Hideki Hayashi, Tsurugashima, JP;
Assignee:
Pioneer Corporation, Tokyo-to, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/09 ;
U.S. Cl.
CPC ...
G11B 5/09 ;
Abstract
A recording medium for recording digital information including a substrate member, a plurality of recording tracks formed on the substrate member, and a plurality of pits formed on the recording tracks. In the recording medium, the pits are arranged in a fixed period, the position of an edge of each pit is changed in accordance with the digital information to be recorded in the recording medium, and the phase of the train of the pits formed on one of the recording tracks and the phase of the train of the pits formed on another one of the recording tracks adjacent to the one of the recording tracks are shifted each other by half of the fixed period.