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:
Jan. 04, 2000
Filed:
Oct. 28, 1997
Hiroshi Noda, Tokyo, JP;
Yasushi Fujiwara, Tokyo, JP;
Mitsubishi Electric Engineering Co., Ltd., Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A D/A-converter-built-in integrated circuit which is provided with counter responsive to a count mode switching signal to switch between a count mode of repeating a count-up operation and a count mode of repeating a count-down operation, a D/A converter for converting a digital signal to analog form, and control means which, when supplied with a test enable signal for starting a test, causes the counter to start its counting and a selector to select and output a digital signal from the counter and then outputs the count mode switching signal to switch the count mode from the one to the other.