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:
Sep. 07, 1982
Filed:
Sep. 12, 1980
Masahiko Achiha, Iruma, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Denshi Kabushiki Kaisha, Tokyo, JP;
Abstract
A phase of a composite color television signal is adjusted by utilizing a signal which is one-field after or before relative to a current signal and which is a signal of the nearest scanning line. A difference signal between the color television signal and a signal derived from a one-field memory is applied to a band-pass filter and an output signal of the band-pass filter is added to the color television signal so that the phase of the carrier chrominance signal is adjusted by 180 degrees. The phase adjuster according to the present invention is applicable to video signal processing systems such as a noise reducer and a differential PCM coder.