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:
Mar. 29, 1988
Filed:
Mar. 05, 1987
Applicant:
Inventors:
Masafumi Take, Tokyo, JP;
Haruo Takeda, Tokyo, JP;
Assignee:
Seiko Instruments Inc., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
3403 / ; 364571 ; 3403 / ;
Abstract
In order to provide a high-resolution A/D converter, the present invention is based upon the combination of two D/A converters, an input switch, an adder, an amplifier and a processor, wherein characteristics of the two D/A converters are learned relying upon the work of the processor and the switch, and the final digital output is corrected relying upon the thus learned characteristics to accomplish a high resolution.