Battery built-in wireless ID card unit and ID verification unit
First Claim
Patent Images
1. A battery built-in wireless ID card unit comprising:
- a magnetic field detection section which generates an electromotive force from a received purely magnetic field to turn on a power switch of a built-in battery; and
a control section which is capable of sending out an ID code after said power switch is turned on, and thereafter turning off said power switch.
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Abstract
A battery built-in wireless ID card unit including a magnetic field detection section which generates an electromotive force from a received magnetic field to turn on a power switch of a built-in battery, and a control section which transmits an ID code by radio after the power switch is turned on, thereby turning off the power switch.
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Citations
4 Claims
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1. A battery built-in wireless ID card unit comprising:
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a magnetic field detection section which generates an electromotive force from a received purely magnetic field to turn on a power switch of a built-in battery; and a control section which is capable of sending out an ID code after said power switch is turned on, and thereafter turning off said power switch. - View Dependent Claims (2, 3)
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4. An ID card verification system, comprising:
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a battery built-in wireless ID card unit having a magnetic field detection section which generates an electromotive force from a received verification signal in the form of a purely magnetic field to turn on a power switch of a built-in battery, and a control section which is capable of sending out an ID code and/or stop control code in the form of a radio signal after said power switch is turned on, and thereafter turning off said power switch; and a wireless ID verification unit having a magnetic field generation section for transmitting said verification signal, an antenna section for receiving said radio signal, and a verification section which detects, from said radio signal, said ID code and/or stop control signal for stopping generation of the verification signal for a predetermined period of time.
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Specification