Internal voltage generating circuit and smart card

US8944334B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8944334-B2
Application numberUS-201213523518-A
CountryUS
Kind codeB2
Filing dateJun 14, 2012
Priority dateJun 14, 2011
Publication dateFeb 3, 2015
Grant dateFeb 3, 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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Abstract

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An internal voltage generating circuit includes a first voltage application unit, a second voltage application unit, a first regulator, a second regulator, and a controller. The first and second voltage application units respectively provide a first voltage and a second voltage. The controller generates a bulk voltage, a first control signal, and a second control signal from the first and second voltages. The first regulator is enabled or disabled according to the first control signal and generates and outputs the first internal voltage based on the bulk voltage, the first voltage, and a first reference voltage. The second regulator is enabled or disabled according to the second control signal and generates and outputs the second internal voltage based on the bulk voltage, the second voltage, and a second reference voltage.

First claim

Opening claim text (preview).

What is claimed is: 1. An internal voltage generating circuit configured to generate and output a first internal voltage in a contactless mode and to generate and output a second internal voltage in a contact mode, the internal voltage generating circuit comprising: a first voltage application unit configured to apply a first voltage that is higher in the contactless mode than in the contact mode; a second voltage application unit configured to apply a second voltage that is hig…

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What does patent US8944334B2 cover?
An internal voltage generating circuit includes a first voltage application unit, a second voltage application unit, a first regulator, a second regulator, and a controller. The first and second voltage application units respectively provide a first voltage and a second voltage. The controller generates a bulk voltage, a first control signal, and a second control signal from the first and secon…
Who is the assignee on this patent?
Cho Jong-Pil, Song Il-Jong, Lee Sang-Hyo, and 1 more
What technology area does this patent fall under?
Primary CPC classification G06K19/0715. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Feb 03 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).