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:
Aug. 07, 2007
Filed:
Aug. 11, 2004
Shiro Dosho, Osaka, JP;
Naoshi Yanagisawa, Osaka, JP;
Masaomi Toyama, Osaka, JP;
Keijiro Umehara, Kyoto, JP;
Shiro Dosho, Osaka, JP;
Naoshi Yanagisawa, Osaka, JP;
Masaomi Toyama, Osaka, JP;
Keijiro Umehara, Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An analog circuit automatic calibration system for calibrating an object circuit that is an analog circuit having a characteristic changing with an input set value. The system includes: a set value storage section for storing a value and outputting the value to the object circuit as the set value; a characteristic detection section for detecting the characteristic of the object circuit; a first characteristic change section for determining the set value so that the characteristic of the object circuit is optimized; a second characteristic change section for updating the set value so that the characteristic of the object circuit is maintained, using an algorithm different from that used in the first characteristic change section; and a selector for selecting either one of the outputs of the first and second characteristic sections to enable the selected one to be stored in the set value storage section.