Title:
NON-CONTACT IC CARD READER/WRITER
Document Type and Number:
Japanese Patent JP3808440
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a non-contact IC card reader/writer capable of preventing power shortage in a non-contact IC card at a communication state and preventing prolongation of time to completion of communication.
SOLUTION: In the non-contact IC card reader/writer which performs radio communication with the non-contact IC card incorporating no power source, an inquiry signal for detecting the IC card is transmitted by first transmission output P1 and a command signal different from the inquiry signal is transmitted by second transmission output P2 larger than the first transmission output.
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Inventors:
Dai Aoki
Application Number:
JP2003009509A
Publication Date:
August 09, 2006
Filing Date:
January 17, 2003
Export Citation:
Assignee:
NEC Infrontia Co., Ltd.
International Classes:
G06K17/00; H04B5/02; (IPC1-7): G06K17/00; H04B5/02
Domestic Patent References:
| JP2001283163A | ||||
| JP6096289A | ||||
| JP10135884A |
Attorney, Agent or Firm:
Kenho Ikeda
Shuichi Fukuda
Takashi Sasaki
Shuichi Fukuda
Takashi Sasaki
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