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:
Nov. 15, 2005
Filed:
Jan. 12, 2001
Hidetoshi Suzuki, Takatsuki, JP;
Katsuya Ishikawa, Takatsuki, JP;
Keiichi Ito, Moriguchi, JP;
Hisao Kunitani, Kyoto, JP;
Hidetoshi Suzuki, Takatsuki, JP;
Katsuya Ishikawa, Takatsuki, JP;
Keiichi Ito, Moriguchi, JP;
Hisao Kunitani, Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
An object of the present invention is to provide a signal processor which improves the offset accuracy of a video signal without increasing the number of bits of a circuit. An N-bit adder () adds a video signal (S) and an upper-N-bit signal of a brightness control signal (S) as an offset value. A 1-bit pulse generator () generates a 1-bit pulse signal (S) in which '1' and '0' have equal chances of appearing at random. A selector () selects the 1-bit pulse signal (S) when the LSB of the brightness control signal (S) is “1”, while selects a ground level “0” when the LSB is “0”, and supplies the selected signal to a carry input of the N-bit adder ().