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. 09, 2004
Filed:
Feb. 26, 2003
Toru Tanaka, Ota, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
During an operation to change the recording speed, an optical pickup ( ) is retracted so as to play back a signal that has already been recording onto a disc D. A synchronization signal obtained from the signal that is played back by the optical pickup ( ) and a recording reference signal are synchronized, and the recording operation is resumed from a recording interrupted position. The position where the optical pickup ( ) is to be retracted is set on the basis of the time required to change the recording speed. Also, a rotational speed change operation for a spindle motor ( ) for rotationally driving a disc D and the retract operation for the optical pickup ( ) are performed concurrently.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile