Title:
RADIO FREQUENCY IDENTIFICATION AND IC CARD
Document Type and Number:
Japanese Patent JP3885922
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To widen the operable voltage range of a radio frequency identification(RFID) and to make RFID general and inexpensive without the necessity of IC internal circuit design change caused by an external factor.
SOLUTION: The RFID uses an IC in a circuit configuration, in which the IC impedance state is turned into a low impedance state as a communication means when a communication control circuit inside the IC is in a reset state.
Inventors:
Takehiro Okawa
Yuyama trunk
Hiroshi Yoshiki
Tadashi Onishi
Kazuki Watanabe
Yuyama trunk
Hiroshi Yoshiki
Tadashi Onishi
Kazuki Watanabe
Application Number:
JP2000067141A
Publication Date:
February 28, 2007
Filing Date:
March 07, 2000
Export Citation:
Assignee:
Renesas Technology Corp.
International Classes:
B42D15/10; G06K19/07; G06F1/24; H04B7/00; H04Q5/22; (IPC1-7): G06K19/07; B42D15/10; G06F1/24
Domestic Patent References:
| JP8030752A | ||||
| JP11215026A |
Attorney, Agent or Firm:
Mitsumasa Tokuwaka
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