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.:

US 9369123 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 14, 2016

Filed:

Jul. 21, 2014
Applicant:

Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;

Inventor:

Masahiro Kimura, Kanagawa-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 7/00 (2006.01); H03K 17/22 (2006.01); G06F 1/24 (2006.01);
U.S. Cl.
CPC ...
H03K 17/22 (2013.01); G06F 1/24 (2013.01);
Abstract

A power-on reset circuit of one embodiment includes first and second power supplies, first and second detecting circuit, a differentiation circuit, a current mirror circuit and a latch circuit. The second power supply is generated from a voltage of the first power supply and supplies a voltage lower than the first power supply. The first detecting circuit detects rise of a voltage of the second power supply. A current corresponding to a change in potential of the first power supply flows through the differentiation circuit. The current mirror circuit multiplies the current flowing through the differentiation circuit. The second detecting circuit senses stoppage of output current of the current mirror circuit and detects completion of the rise of the voltage of the first power supply. The latch circuit is reset by an output signal of the first detecting circuit and set by an output signal of the second detecting circuit.


Find Patent Forward Citations

Kimura, Masahiro. (2016). Power-on reset circuit (U.S. Patent No. 9369123). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9369123

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