Noncontact data carrier

Details Noncontact data carrier Noncontact data carrier

2006-09-28

2011-10-18

Le, Thien M. (Department: 2887)

Registers

Records

Conductive

C235S375000, C235S380000, C235S451000, C340S572100

Reexamination Certificate

active

08038070

ABSTRACT:
When performing radio communication with a reader/writer (1), supply of a power source S4from a battery (14) is started when a level judgment circuit (9) judges that the signal level of a reception signal S2received by an antenna (5) of a noncontact data carrier (4) is equal to or higher than a predetermined amplitude and a timer circuit (10) judges that the state where the amplitude is equal to or higher than the predetermined value has continued for a predetermined period T1or more, and further, the supply of the power source S4from the battery is stopped when the level judgment circuit (9) judges that the signal level of the reception signal S2is lower than the predetermined amplitude and the timer circuit (10) judges that state where the amplitude is lower than the predetermined value has continued for a predetermined period T2or more, thereby ensuring communication reliability that causes no problem in practical use of the noncontact data carrier (4), and avoiding insignificant dissipation of the battery.

REFERENCES:
patent: 5103222 (1992-04-01), Hogen Esch et al.
patent: 6079619 (2000-06-01), Teraura et al.
patent: 6489883 (2002-12-01), Iiyama et al.
patent: 6952167 (2005-10-01), Wakabayashi
patent: 7003650 (2006-02-01), Babaian et al.
patent: 2005/0173542 (2005-08-01), Watanabe et al.
patent: 2005/0284940 (2005-12-01), Enomoto et al.
patent: 2006/0202043 (2006-09-01), Watanabe et al.
patent: 63-227140 (1988-09-01), None
patent: 64-80892 (1989-03-01), None
patent: 4-358959 (1992-12-01), None
patent: 8-167014 (1996-06-01), None
patent: 9-134239 (1997-05-01), None
patent: 10-76948 (1998-03-01), None
patent: 10-302028 (1998-11-01), None
patent: 11-25237 (1999-01-01), None
patent: 11-338984 (1999-12-01), None
patent: 11-345292 (1999-12-01), None
patent: 2000-90220 (2000-03-01), None
patent: 2003-6590 (2003-01-01), None
patent: 2004-64328 (2004-02-01), None
patent: 2005-80205 (2005-03-01), None
patent: 2005-148795 (2005-06-01), None
patent: 2005-208754 (2005-08-01), None
International Search Report issued Nov. 28, 2006 in International (PCT) Application No. PCT/JP2006/319385.
Written Opinion of the ISA issued Nov. 28, 2006 in International (PCT) Application No. PCT/JP2006/319385.

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