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:
Jul. 24, 2001
Filed:
Aug. 04, 1998
Applicant:
Inventor:
Tuong Hai Hoang, San Jose, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/50 ; H04N 5/14 ;
U.S. Cl.
CPC ...
H04N 5/50 ; H04N 5/14 ;
Abstract
A video pre-amplifier includes an input stage and an output stage. In one embodiment, an on-screen display signal is provided to the output stage, and a control signal is asserted when the on-screen display signal is active. With respect to a video output signal, both the gains of the input stage and output stage are adjusted when the control signal is asserted. In one embodiment, the control signal is generated by a comparator within the output stage.