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:
Jul. 14, 1987
Filed:
Sep. 11, 1985
Motoi Yagi, Zushi, JP;
Tadao Miyabayashi, Tokyo, JP;
Tokyo Electric Co., Ltd., Tokyo, JP;
Abstract
A television composite video signal processing circuit has a readout circuit for repeatedly reading out a one-field composite video signal from a disk memory. A delay circuit delays the composite video signal from the readout circuit by 1/2 of a horizontal sync signal period H, and a pedestal clamping circuit sets the pedestal levels of the composite video signals from the delay circuit and the readout circuit to a predetermined level. A signal selector alternately supplies the composite video signals from the readout circuit and the delay circuit to the pedestal clamping circuit for every other field, and a peak level correction circuit corrects the peak level of the delayed video signal in the delayed composite video signal from the delay circuit. The peak level correction circuit corrects the peak level of the delayed video signal so as to match this peak level with that of the nondelayed video signal from the readout circuit in accordance with a peak level difference between the delayed and nondelayed video signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile