Method for identifying the position of a portable...

Details Method for identifying the position of a portable... Method for identifying the position of a portable...

2006-04-25

2006-04-25

Holloway, III, Edwin C. (Department: 2635)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S010100

Reexamination Certificate

active

07034656

ABSTRACT:
A method for the recognition of the proximity of a portable transponder (20) to a base station (2), comprises the steps of: the base station transmits a first test signal with a defined power, the transponder determines the field strength with which it received the first test signal, and transmits a response signal to the base station containing said field strength and the base station stores the same. The transponder transmits a second test signal with a defined power, the base station determines the field strength with which it receives the second test signal and determines, from a comparison of the two field strengths, whether the transponder is in the vicinity thereof.

REFERENCES:
patent: 5128873 (1992-07-01), Gilmour et al.
patent: 5157408 (1992-10-01), Wagner et al.
patent: 5170172 (1992-12-01), Weinstein
patent: 6208239 (2001-03-01), Muller et al.
patent: 6218932 (2001-04-01), Stippler
patent: 6747545 (2004-06-01), Nowottnick et al.
patent: 2002/0109581 (2002-08-01), Blatz
patent: 0 980 800 (2000-02-01), None

Affiliated with

Also associated with

Rating

Method for identifying the position of a portable... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for identifying the position of a portable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for identifying the position of a portable... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3530613