Method of installing IC tag
First Claim
Patent Images
1. A method of making an IC tag, the method comprising:
- installing, in a device, an antenna and an IC chip with an electrical breakdown circuit that destroys another circuit included in the IC chip in response to a breakdown voltage;
installing a breakdown voltage generation circuit which generates the breakdown voltagein response to a mechanical force applied to the device.
2 Assignments
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Accused Products
Abstract
An IC chip in an IC tag is provided with a voltage application terminal in connection with its internal circuit, and a high voltage or a reverse voltage is applied to the voltage application upon unlawful handling of the IC tag, so that the IC chip is electrically broken down. In this way, an IC tag installed in an item is prevented from being misused when the IC tag is no longer necessary or being removed for misuse.
24 Citations
13 Claims
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1. A method of making an IC tag, the method comprising:
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installing, in a device, an antenna and an IC chip with an electrical breakdown circuit that destroys another circuit included in the IC chip in response to a breakdown voltage; installing a breakdown voltage generation circuit which generates the breakdown voltage in response to a mechanical force applied to the device. - View Dependent Claims (2, 3, 4, 5)
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6. An IC tag-bearing device, comprising:
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an IC tag including an IC chip and an antenna, the IC chip including an electrical breakdown circuit that destroys another circuit included in the IC chip in response to a breakdown voltage; and a breakdown voltage generation circuit which generates the breakdown voltage in response to a mechanical force applied to the IC tag-bearing device. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification