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. 13, 1990
Filed:
Jan. 09, 1989
Applicant:
Inventor:
Jun Kobayashi, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358108 ; 358153 ; 358181 ; 358183 ;
Abstract
Analog-to-digital converters of an image processor dealing with multiple input video signals are each provided with a sync separation circuit for extracting the sync signal from the input video signal and a frequency divider which is reset by the sync signal and adapted to reduce the clock frequency. The frequency dividers have an equal reduction ratio and equal clock, and produce sampling clocks used for the analog-to-digital conversion.