CPC G06K 19/07771 (2013.01) [G06K 19/07773 (2013.01)] | 8 Claims |
1. An interference suppression apparatus that suppresses electromagnetic field interference produced by a radio frequency identification tag, the interference suppression apparatus comprising:
a power supply circuit;
an antenna that is connected to the power supply circuit;
a clock that is connected to the power supply circuit and generates an output in which a time constant is adjusted to be longer than a communication time of the radio frequency identification tag; and
a load adjuster that is connected to the power supply circuit and changes a characteristic of the antenna based on the output from the clock, wherein:
the radio frequency identification tag is provided on a label;
the interference suppression apparatus is provided on the same label as the radio frequency identification tag; and
the antenna of the interference suppression apparatus and an antenna of the radio frequency identification tag are arranged so as to be substantially parallel to each other with a predetermined gap therebetween.
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