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:
May. 19, 2020

Filed:

Jul. 08, 2019
Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventor:

Hirohisa Nakajima, Tsukubamirai, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 3/20 (2006.01); G03G 15/00 (2006.01); G05F 3/30 (2006.01);
U.S. Cl.
CPC ...
G05F 3/205 (2013.01); G03G 15/80 (2013.01); G05F 3/30 (2013.01);
Abstract

A bias output apparatus includes: a plurality of voltage output circuits, each configured to output a bias voltage to be supplied to a load and a determination voltage generated based on the bias voltage; a determination circuit configured to output a binary determination signal based on the determination voltage output by each of the plurality of voltage output circuits; and a controller configured to control the plurality of voltage output circuits and determine whether or not the plurality of voltage output circuits are operating normally based on the determination signal output by the determination circuit. The controller is further configured to determine that the plurality of voltage output circuits are operating normally if an output pattern of the determination signal is a predetermined first pattern while the controller is controlling the plurality of voltage output circuits to output bias voltages in order.


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