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. 25, 1998
Filed:
Nov. 05, 1996
Applicant:
Inventor:
Kouji Okada, Kasugai, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341158 ;
Abstract
An improved method and apparatus related to a comparator particularly suited for use in an A/D converter so as to obtain a high resolution, which results in a reduced circuit area and operates with low power consumption. To compare an analog input voltage and reference voltages, the comparator includes chopper type comparators for producing comparison voltages and determination signals, and includes a determination circuit for producing one or more additional determination signals. The chopper type comparators may further include amplifiers and determination circuits.