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:
Mar. 02, 1999
Filed:
Apr. 08, 1998
Applicant:
Inventors:
Yasuki Matsumoto, Takarazuka, JP;
Mitsuro Moriya, Ikoma, JP;
Hiroyuki Yamaguchi, Hirakata, JP;
Shin-ichi Yamada, Katano, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 4434 ; 369 4435 ; 369 47 ; 369 54 ; 3692753 ;
Abstract
In the optical recording medium of the invention, land and groove tracks are arranged in a spiral manner, and a completion information region having identification reading completion information indicative of a rear end of an identification region is disposed between data regions. A pair of wobble pits are disposed immediately behind the identification reading completion information region, and therefore the wobble pits can accurately be detected by reading out the wobble pits on the basis of the identification reading completion information.