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:
Jan. 09, 2001
Filed:
Feb. 17, 1998
Junji Masumoto, Ibaraki, JP;
Yasuaki Sakanishi, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A synchronize processing circuit offers a stable supply of synchronizing signal to control circuits in display devices. A synchronize processing circuit for multiscan display devices which display one type of video signals of multiple video sources having different scanning frequencies comprises a PLL circuit for synchronizing regeneration of the synchronizing signal in the input video signal having a specified scanning frequency to output a regeneration clock; a controller for generating a control signal; a first pulse generator which receives a synchronizing signal in the video signal or the divided output signal of a divider built in the PLL circuit, control signal, and regeneration clock, and outputs a synchronizing signal with a specified phase and width; an AFC circuit for outputting a synchronizing signal; a deflection output circuit which receives the synchronizing signal output from the AFC circuit and feeds back a synchronizing signal with the same phase as a deflection current frequency to the AFC circuit; and a second pulse generator which receives the synchronizing signal output from the deflection output circuit and control signal, and outputs a synchronizing signal with a specified phase and width.