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:
Apr. 04, 2006
Filed:
Jul. 31, 2002
Lieyi Fang, Plano, TX (US);
Haydar Bilhan, Dallas, TX (US);
Gonggui Xu, Plano, TX (US);
Ramesh Chandrasekaran, Plano, TX (US);
Feng Ying, Plano, TX (US);
Erkan Bilhan, Dallas, TX (US);
Jason Meiners, Richardson, TX (US);
Lieyi Fang, Plano, TX (US);
Haydar Bilhan, Dallas, TX (US);
Gonggui Xu, Plano, TX (US);
Ramesh Chandrasekaran, Plano, TX (US);
Feng Ying, Plano, TX (US);
Erkan Bilhan, Dallas, TX (US);
Jason Meiners, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A clamping circuit disclosed herein has two modes of operation which include both a bottom level and mid-level clamping mode for clamping automatically onto the sync tip of a video signal and customizably clamping onto the front porch, back porch/pedestal or anywhere within the signal. The clamping circuit () includes a clamping capacitor () that couples to an automatic clamping circuit portion () to automatically clamp the synchronization pulse of the video input signal to a first predetermined reference voltage (V) of a first clamping pulse signal during an automatic clamping mode of operation. The automatic clamping portion () connects to the customizable clamping circuit portion () to clamp any portion of the video input signal to a second predetermined reference voltage (V) of a second clamping pulse signal during a customizable clamping mode of operation. A buffer () connects between the customizable clamping circuit portion and the output node of the clamping circuit.