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:
Dec. 31, 1996
Filed:
Nov. 21, 1995
Applicant:
Inventors:
Kazutoshi Shimizume, Kanagawa, JP;
Mamoru Akita, Kanagawa, JP;
Assignee:
Sony Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 50 ; 369 32 ;
Abstract
A plurality of pickups are provided for reading information recorded on a disc. Each of the pickups is provided with a signal processing system and a control system. Each of the signal processing systems and control systems is controlled by a system controller such that, while one pickup is reading the information, another pickup is moved to a next information reading position and put in a standby state. As soon as the former pickup has completed the reading operation, the latter pickup gets out of standby state to be ready for reading the information at the above-mentioned position. The novel setup reduces seek time significantly.