Power source switching device and electronic appliance

US9152012B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9152012-B2
Application numberUS-201313863641-A
CountryUS
Kind codeB2
Filing dateApr 16, 2013
Priority dateApr 17, 2012
Publication dateOct 6, 2015
Grant dateOct 6, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A power source switching device includes a first switch circuit provided between a first power source and a load section, a second switch circuit provided between a second power source and the load section, a third switch circuit provided between the first power source and the load section in series with the first switch circuit, a fourth switch circuit provided between the second power source and the load section in series with the second switch circuit, a logic circuit that controls the third and the fourth switch circuits to prevent at least one of the third and fourth switch circuits from turning on while both of the first and second switch circuits are in an on state, and a control circuit that controls the first switch circuit, the second switch circuit, and the logic circuit.

First claim

Opening claim text (preview).

What is claimed is: 1. A power source switching device which switches between a first power source and a second power source as a power source for supplying a driving voltage to a load section, the power source switching device comprising: a first switch circuit provided between the first power source and the load section; a second switch circuit provided between the second power source and the load section; a third switch circuit provided between the first power source and th…

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Frequently asked questions

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What does patent US9152012B2 cover?
A power source switching device includes a first switch circuit provided between a first power source and a load section, a second switch circuit provided between a second power source and the load section, a third switch circuit provided between the first power source and the load section in series with the first switch circuit, a fourth switch circuit provided between the second power source …
Who is the assignee on this patent?
Panasonic Corp, Panosonic Intellectual Property Man Co Ltd
What technology area does this patent fall under?
Primary CPC classification G03B7/26. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Oct 06 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).