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:
Aug. 29, 1989
Filed:
Nov. 16, 1987
Applicant:
Inventors:
Masahiro Nakajima, Saitama, JP;
Tutomu Banno, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358342 ; 360 101 ;
Abstract
A spindle servo circuit controlled according to a time base. Fine time base tuning is performed in a clock driven CCD. In a scan mode, tracks are alternately reproduced and jumped. The fine tuning is turned off at the start of jumping (which occurs after a full video field has been written into a video memory) and the center frequency of a VCO clock is decreased so as to slow the shifting of the CCD.