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:
Nov. 20, 2001
Filed:
Apr. 23, 1999
Applicant:
Inventors:
Chiaki Nonaka, Kanagawa, JP;
Seiji Ohbi, Tokyo, JP;
Makoto Yamada, Tokyo, JP;
Masahiro Shigenobu, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/09 ;
U.S. Cl.
CPC ...
G11B 5/09 ;
Abstract
A reproducing apparatus for reading, or a recording apparatus for writing, data from or to a disc having pre-formed thereon a pair of concentrical or spiral tracks adjacent to each other and to which a common address is given, is adapted to control the time at which a read or write head is moved from one to the other of the pair of tracks or vice versa.