OPTICAL LATCH CIRCUIT AND ELECTRONIC DEVICE

Title:

OPTICAL LATCH CIRCUIT AND ELECTRONIC DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/195064

Kind Code:

A1

Abstract:

This optical latch circuit is provided with: a voltage sensor for making a comparison between a first power generation voltage inputted from a first input terminal and a first threshold voltage set in advance, and outputting a set signal from an assessment output terminal when the first power generation voltage exceeds the first threshold voltage; a first photovoltaic element connected in the forward direction between the first input terminal and a ground point, the first photovoltaic element photovoltaicly outputting, when irradiated with light, a prescribed first power generation voltage to the first input terminal; and a feedback resistor interposed between the first input terminal and the assessment output terminal.

More Like This:

WO/1993/010550	LIGHT OPERATED SWITCH
JPS5979343	FINGER-TOUCH INPUT SYSTEM

Inventors:

ISOGAI RYOSUKE (JP)
YOSHIDA YOSHIFUMI (JP)
UTSUNOMIYA FUMIYASU (JP)

Application Number:

PCT/JP2020/002111

Publication Date:

October 01, 2020

Filing Date:

January 22, 2020

Export Citation:

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Assignee:

SEIKO INSTR INC (JP)
ABLIC INC (JP)

International Classes:

H03K17/78; H03K17/945

Foreign References:

JPS6336612A	1988-02-17
JPH0738504A	1995-02-07
JP2010219642A	2010-09-30

Other References: