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:
Sep. 20, 2011
Filed:
Oct. 21, 2009
Shinichi Miyazaki, Suwa, JP;
Hiroyuki Yoshino, Matsumoto, JP;
Nobuaki Azami, Matsumoto, JP;
Atsushi Oshima, Shiojiri, JP;
Noritaka Ide, Shiojiri, JP;
Kunio Tabata, Shiojiri, JP;
Shinichi Miyazaki, Suwa, JP;
Hiroyuki Yoshino, Matsumoto, JP;
Nobuaki Azami, Matsumoto, JP;
Atsushi Oshima, Shiojiri, JP;
Noritaka Ide, Shiojiri, JP;
Kunio Tabata, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A pulse width modulation circuit includes: a reference signal generator which generates a plurality of mutually differing reference signals; a comparator which compares the reference signals and an input signal with respect to magnitude, and outputs results of the comparison as a plurality of comparison signals with mutually differing phases; and a synthesizer which, using a logical operation, outputs the plurality of comparison signals output from the comparator as a pulse width modulated signal configured of one or more binary signals.