Communication system for communicating with tags

Details Communication system for communicating with tags Communication system for communicating with tags

1996-04-23

1997-11-11

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082549, 342457, H04Q 100

Patent

active

056869029

ABSTRACT:
A communication system for identifying, locating, tracking and communicating for other purposes with large numbers of tags in a time and energy efficient manner. The tags are associated with items located in a communication region that is interrogated by an interrogator on a one-to-many basis using broadcast commands, on a one-to-one basis using directed commands or on a combination basis using both methods. Identification occurs through organized transmission and reception of signals between the tags and the interrogator. A batch collection protocol uses a combined one-to-many and one-to-one communication system that effectively resolves communication contentions. The batch collection protocol employs a plurality of collection periods which communicate with large or unknown numbers of portable tags.

REFERENCES:
patent: 4510495 (1985-04-01), Sigrimis
patent: 4636950 (1987-01-01), Caswell
patent: 4691202 (1987-09-01), Denne
patent: 5003317 (1991-03-01), Gray
patent: 5426421 (1995-06-01), Gray
Websters ninth new collegiate Dictionary. 1985 pp. 128.

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