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. 27, 1979
Filed:
Jul. 19, 1977
Kazumoto Iinuma, Tokyo, JP;
Nippon Electric Co., Ltd., Tokyo, JP;
Abstract
An interframe encoder for a composite color television signal comprises an inverter for inverting the polarity of the carrier chrominance signal. Responsive to a switching signal synchronized with the frame or line periods, the television signal and the polarity-inverted signal are alternatingly switched into a converted signal in which the polarity of the carrier chrominance signal is inverted in every other frame or line period. The converted signal is interframe encoded. An interframe decoder reproduces the converted signal and the switching signal and comprises an inverter for inverting the polarity of the reproduced carrier chrominance signal. Responsive to the reproduced switching signal, the reproduced and polarity-inverted carrier chrominance signal and the converted signal are switched into a reproduction of the color television signal.