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. 15, 2004
Filed:
Mar. 16, 1999
Sally Yeung, North York, CA;
Hugh Chow, Richmond Hill, CA;
ATI International Srl, , BB;
Abstract
A method and apparatus for adjusting the amplitude and DC bias of a video signal is presented, which may be performed in preparation for analog-to-digital conversion. This is accomplished by first converting a received voltage mode video signal to a current mode video signal. Similarly, a voltage mode bias control signal is converted to a current mode bias control signal. The amplitude of the current mode video signal is then adjusted to produce an amplitude adjusted video signal. Similarly, the amplitude of the current mode bias signal is adjusted to produce an amplitude adjusted bias control signal. The current mode amplitude adjusted signals are then combined to produce a biased adjusted current mode video signal. The biased adjusted current mode video signal is then converted back to a voltage mode signal, which may be provided to an analog-to-digital converter for conversion.