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:
Oct. 03, 1978
Filed:
Feb. 17, 1977
Applicant:
Inventor:
Kunio Umehara, Yokohama, JP;
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358190 ;
Abstract
A switching regulator for a television receiver, wherein a non-stable dc voltage is periodically interrupted at the horizontal frequency by a chopper and the dc voltage obtained as the output of the chopper is applied to the horizontal output circuit. Flyback pulses generated by the horizontal output circuit are integrated to generate a saw-tooth waveform, and the dc component of the saw-tooth waveform is varied in accordance with the variation of the dc voltage delivered by the chopper. The duty ratio of the chopper is changed according to the variation of the dc component of the saw-tooth waveform.