Adjustment of the detection, transmission and/or reception...

Details Adjustment of the detection, transmission and/or reception... Adjustment of the detection, transmission and/or reception...

2006-11-28

2006-11-28

Anderson, Matthew D. (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Short range rf communication

C455S082000, C455S121000, C340S010100, C340S572700

Reexamination Certificate

active

07142815

ABSTRACT:
There is described a method for adjusting the detection, transmission and/or reception parameters (DET, GTx, GRx) of a radiofrequency reader (10) of an electronic radiofrequency identification system as a function of the ambient electromagnetic noise. This method includes at least one step of measuring, via the radiofrequency reader, the ambient electromagnetic noise level, and a step of adjusting the detection, transmission and/or reception parameters of the radiofrequency reader on the basis of the measured ambient electromagnetic noise level. Preferably, this method further includes a step of measuring the response of a reference transponder (30) placed at least temporarily in the interrogation field of the antenna (20) associated with the radiofrequency reader, this reference transponder (30) having similar characteristics to the characteristics of the transponders to be identified. The adjustment step also includes adjustment of the detection, transmission and/or reception parameters of the radiofrequency reader on the basis of the measured response of the reference transponder (30). There is also described an electronic radiofrequency identification system for implementing this method.

REFERENCES:
patent: 5134720 (1992-07-01), Gamgee et al.
patent: 6509837 (2003-01-01), Tuttle et al.
patent: 6574454 (2003-06-01), Tuttle
patent: 6781508 (2004-08-01), Tuttle et al.
patent: 198 47 135 (2000-04-01), None
patent: WO 01 15070 (2001-03-01), None
patent: WO 02 41029 (2002-05-01), None

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