Title:
ELECTRONIC CIRCUIT FOR NON-CONTACT TAG AND NON-CONTACT TAG
Document Type and Number:
Japanese Patent JP3870922
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a low-cost electronic circuit for a non-contact tag without having to be equipped with an extra boosting coil, when mounting an indicator and a memory on the electronic circuit for the non-contact tag.
SOLUTION: An electronic circuit for a non-contact tag 11 has a transmitting/receiving element 13 which is located close to a reader/writer to communicate the data therewith. The element 13 comprises a resonant circuit composed of an antenna coil L and a resonant capacitor C0 resonating in response to power supplying from the reader/writer. The electronic circuit 11 is featured by having a circuit switching means 15 for switching between a state in which the antenna coil L constitutes the resonant circuit of the element 13 and a state in which the antenna coil L constitutes a boosting circuit.
Inventors:
Shinichiro Watanabe
Application Number:
JP2003098277A
Publication Date:
January 24, 2007
Filing Date:
April 01, 2003
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G06K19/07; H04B5/02; H04Q5/22; (IPC1-7): G06K19/07; H02J17/00; H04B5/02
Domestic Patent References:
| JP4304034A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Fujitsuna Hideyoshi
Osamu Suzawa
Fujitsuna Hideyoshi
Osamu Suzawa
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