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:
Dec. 06, 2016

Filed:

Sep. 21, 2015
Applicants:

Hironobu Tani, Osaka, JP;

Tomohiko Kamatani, Osaka, JP;

Inventors:

Hironobu Tani, Osaka, JP;

Tomohiko Kamatani, Osaka, JP;

Assignee:

RICOH COMPANY, LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/00 (2016.01); H03K 5/153 (2006.01); H02P 6/14 (2016.01);
U.S. Cl.
CPC ...
H03K 5/153 (2013.01); H02P 6/14 (2013.01);
Abstract

A voltage level detector is provided. The voltage level detector includes a comparator and a threshold level changer. The comparator compares a voltage level of an increasing or decreasing input signal with a threshold level, and generates and outputs a voltage level detection signal indicating that the input signal has reached the threshold level. The threshold level changer changes the threshold level of the comparator based on the voltage level detection signal by increasing the threshold level when the input signal is monotonically increasing and decreasing the threshold level when the input signal is monotonically decreasing.


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