Method for resolving signals collisions between multiple RFID tr

Details Method for resolving signals collisions between multiple RFID tr Method for resolving signals collisions between multiple RFID tr

1999-09-13

2000-07-18

Zimmerman, Brian

Communications: electrical

Selective

Interrogation response

340 103, 340 1042, 34082534, 34082531, 714748, 714749, 714797, 714799, H04Q 522

Patent

active

060913193

ABSTRACT:
Communications between an RFID interrogator and an RFID transponder require that no more than one transponder be present in the reading range of the interrogator and transmitting into motion at any given time. If multiple transponders are in the field, then a collision between the return signals of the transponders occurs, rendering the signals unreadable. A method to resolve the collisions and allow for accurate transmission of each transponder's data is given. This method is especially effective over other methods when the transponder is a read-only type of device, whereby there is no communications interrogator on board the read-only transponder.

REFERENCES:
patent: 5339073 (1994-08-01), Dodd et al.
patent: 5583819 (1996-12-01), Roesner et al.
patent: 5742618 (1998-04-01), Lowe
patent: 5745049 (1998-04-01), Akiyama et al.
patent: 5751573 (1998-05-01), Stobbe et al.
patent: 5802080 (1998-09-01), Westby
patent: 5986570 (1999-11-01), Black

Affiliated with

Also associated with

Rating

Method for resolving signals collisions between multiple RFID tr 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 resolving signals collisions between multiple RFID tr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for resolving signals collisions between multiple RFID tr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2040839