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:
Jun. 16, 1992
Filed:
Jun. 01, 1990
Applicant:
Inventor:
Katsu Ito, Hoya, JP;
Assignee:
Citizen Watch Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
3581951 ; 3581911 ; 358188 ; 455324 ;
Abstract
A television receiver includes a baseband 90.degree. phase shifter, an adder, and a phase equalizer. The baseband 90.degree. phase shifter obtains in-phase video signals from the video signals of the I and Q signal blocks. The adder voltage-adds the in-phase video signals together. The phase equalizer corrects phase distortion of an output signal from the adder. The 90.degree. phase shifter has an operating frequency band including at least a received channel and a lower adjacent channel. A video signal is extracted from the phase equalizer.