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US 7,451,934 B2Granted
IC card and method for producing the same
AssigneeSony Corporation
InventorsIsao Takahashi, Junichi Sawada
Life of this patent
Estimating the term…
Abstract
An IC card including a circuit board, an IC chip mounted on the circuit board, an antenna wiring on the circuit board, a noise absorber on the circuit board and effective to absorb and remove noise input to and output from the IC chip, and a pair of card-shaped sheets sandwiching the circuit board therebetween. Noises from the IC card generated during communications by the IC card are removed to exclude adverse effect on the operation of a peripheral apparatus.
Claims3
An IC card comprising:
- a circuit board;
- an IC chip mounted on the circuit board;
- an antenna wiring on the circuit board;
- a noise absorber on the circuit board and effective to absorb and remove noise input to and output from the IC chip;
- and
- a pair of card-shaped sheets sandwiching the circuit board therebetween, wherein,
- the noise absorber is provided in a wiring area on the circuit board to connect the antenna wiring and the IC chip, and
- the noise absorber is a chip-type ferrite bead mounted on the circuit board so as to partially provide the antenna wiring.
5 more elements
An IC card comprising:
- a circuit board;
- an IC chip mounted on the circuit board;
- an antenna wiring on the circuit board;
- a noise absorber on the circuit board and effective to absorb and remove noise input to and output from the IC chip;
- and
- a pair of card-shaped sheets sandwiching the circuit board therebetween, wherein,
- the noise absorber is provided in a wiring area on the circuit board to connect the antenna wiring and the IC chip, and
- the noise absorber is a magnetic layer formed on the circuit board so as to partially cover the wiring area.
5 more elements
Dependencies are inferred from the claim text.