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:
Feb. 14, 1995
Filed:
Jun. 04, 1993
Applicant:
Inventor:
Hiroyuki Kudose, Isehara, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358461 ; 358456 ; 358466 ; 382 52 ;
Abstract
A peak holding circuit includes a peak holding register for holding a current peak value, and an operation circuit for comparing the current peak value with an input signal and for performing a predetermined operation on the current peak value and the input signal when the input signal has a level greater than the current peak value, so that the current peak value is renewed and written into the peak holding register. A video processing unit which uses the above-mentioned peak holding circuit is also provided.