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:
May. 07, 2002
Filed:
May. 25, 2000
Kenichi Seino, Miyagi-ken, JP;
Mitsuo Kamiko, Miyagi-ken, JP;
Tomoyasu Katsuyama, Kanagawa-ken, JP;
Yoshihiro Date, Kanagawa-ken, JP;
Naoki Hagiwara, Kanagawa-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A video display apparatus comprises a video-signal processing circuit for processing an input video signal, a PLL circuit for generating a clock signal, a discrimination circuit for identifying the format of the input video signal and a specification circuit for specifying the format of video information to be displayed. In addition, the video display apparatus also includes a diver-control-signal generation circuit, a driver-control-signal switching circuit and a PLL-signal control circuit. The diver-control-signal generation circuit is used for generating control signals for controlling a gate driver and a source driver which are used for driving a display panel in accordance with the identified format of video information to be displayed. The driver-control-signal switching circuit is used for selecting control signals generated by the driver-control-signal generation circuit for controlling the gate driver and the source driver in accordance with the identified format of the input video signal and a specified display format. The PLL-signal control circuit is used for controlling the clock signal generated by the PLL circuit in accordance with the identified format of the input video signal and the specified display format.