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.

Date of Patent:
Jun. 02, 1992

Filed:

Aug. 11, 1988
Applicant:
Inventors:

Kazuma Ohkura, Kanagawa, JP;

Masahiro Ishikawa, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341158 ; 341154 ;
Abstract

A parallel comparison type A/D converter having a hysterisis is disclosed in which a reference voltage level for comparing with an input analog signal is switched according to a digital converted signal so that the output digital value has a hysterisis characteristic with respect to the input analog signal. Thus, no flickers or chattering in a displayed segment of a display unit occurs when the input analog signal has a value in close to one of the reference voltages to be compared.


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