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. 24, 2007
Filed:
Jun. 10, 2003
Charles Guan, San Francisco, CA (US);
Charles Guan, San Francisco, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
Temperature compensation may be provided to a square function generator by adjusting a tail current of the square function generator. Temperature compensation of the square function generator may be provided, for example, by a second square function generator circuit and an error amplifier. The second square function generator may be substantially similar to the first square function generator. The error amplifier is arranged in cooperation with the first and second square function generators such that the output of the error amplifier adjusts the tail current of the square function generators. A plurality of temperature square function generators may be configured to provide a temperature-compensated cubic function. The temperature compensated cubic function may be used for S-correction in a display system such as a cathode ray tube.