RFID tag circuits operable at different speeds

Details RFID tag circuits operable at different speeds RFID tag circuits operable at different speeds

2008-07-22

2008-07-22

Nguyen, Tai T (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572100, C340S572400, C340S572700, C340S010100, C340S010200, C455S073000, C455S075000, C455S077000, C713S300000, C713S320000, C713S322000, C713S501000, C713S601000

Reexamination Certificate

active

07403122

ABSTRACT:
Embodiments of RFID tag circuits and methods are described, which include a chip having a clock circuit operable to generate a clock signal having different frequencies, and one or more components operable to work at the different frequencies. In addition to a regular frequency, at least one higher frequency is possible, which is enabled in situations where a reader is known to be close to the chip. The proximity ensures that the chip generates reliably more power, which enables its operation at the higher speed.

REFERENCES:
patent: 6606713 (2003-08-01), Kubo
patent: 2005/0210302 (2005-09-01), Kato et al.
patent: 2007/0100921 (2007-05-01), Barnett et al.

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