A semiconductor device which can operate normally even when the communication distance is extremely short, and which stores excess electric power which is not needed for circuit operation of the semiconductor device when a large amount of electric power is supplied thereto. The following are included: an antenna; a first AC/DC converter circuit which is connected to the antenna; a second AC/DC converter circuit which is connected to the antenna through a switching element; a detecting circuit which controls operation of the switching element in accordance with the value of a voltage output from the first AC/DC converter circuit; and a battery which stores electric power supplied from the antenna through the second AC/DC converter circuit. When the switching element is operated, electric power supplied from outside is at least partly supplied to the battery through the second AC/DC converter circuit.

Claims

11 · 4 independent · depth 2

11 granted claims

›1.independentA semiconductor device comprising:nan antenna;a first AC/DC converter circuit electrically connected to the antenna;a second AC/DC converter circuit e…+1

›3.independentA semiconductor device comprising:nan antenna;a first AC/DC converter circuit electrically connected to the antenna;a second AC/DC converter circuit e…+2

›6.independentA semiconductor device comprising:nan antenna;a first AC/DC converter circuit electrically connected to the antenna;a second AC/DC converter circuit e…+2

›9.independentA semiconductor device comprising:nan antenna;a first AC/DC converter circuit electrically connected to the antenna;a second AC/DC converter circuit e…+2

Classifications

8 codes

IPC · International Patent Classification

Section H — Electricity

H02J7/16
H02J7/00

USPC · US Patent Classification

320/138320/137320/136324/425324/426320/134

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File wrapper

Pendency

0.7 y

253 days filing → grant

Office actions

none on record

Responses

1 RCE

Examiner

Alexis Boateng

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Citations: 48 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20120200255 A1	9 Aug 2012

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