Radio frequency identification tag for transmitting...

Details Radio frequency identification tag for transmitting... Radio frequency identification tag for transmitting...

2007-09-11

2007-09-11

Trieu, Van T. (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572400, C340S572700

Reexamination Certificate

active

11147163

ABSTRACT:
A radio frequency identification tag, used in a radio frequency identification system, includes an antenna unit for receiving an external magnetic wave to generate an induced current; a driving voltage generating unit for converting the induced current into a constant voltage and outputting the constant voltage; and a state detecting unit for detecting information about a change in an operational state of the driving voltage generating unit. The tag further includes a memory for storing temperature data corresponding to the information about the change in the operational state and data needed for identification; and a controlling unit for reading out, from the memory, the temperature data dependent on the information about the change in the operational state detected by the state detecting unit and the identification data. The read temperature and identification data are transmitted via an antenna unit.

REFERENCES:
patent: 6452427 (2002-09-01), Ko et al.
patent: 6480699 (2002-11-01), Lovoi
patent: 7068173 (2006-06-01), Shanks et al.
patent: 7102523 (2006-09-01), Shanks et al.
patent: 7116240 (2006-10-01), Hyde
patent: 7-321697 (1995-12-01), None

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