Inventory management system

Details Inventory management system Inventory management system

1991-04-09

1993-07-27

Shepperd, John

Registers

Systems controlled by data bearing records

Inventory

34082544, 455 383, G06F 1524, G08B 522

Patent

active

052312739

ABSTRACT:
An inventory management system which includes a transponder, an interrogation transceiver and control devices utilized therewith. The control devices operate to minimize the power consumption of the transponder while permitting selected, coded operation of the inventory management system. The interrogation transceiver provides linkage to the transponder by means of a modulated radio frequency (RF) carrier during system operation. A transmit/receive switch is also included in the invention to prevent harmful coupling between the transponder receiver and the transponder transmitter. This could occur during data exchanges between the transponder and the interrogation receiver.

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patent: 4636950 (1987-01-01), Caswell et al.
patent: 4656472 (1987-04-01), Walton
patent: 4736461 (1988-04-01), Kawasaki et al.
patent: 4864642 (1989-09-01), Ueno et al.
patent: 4955038 (1990-09-01), Lee et al.
patent: 5047998 (1991-08-01), Mizuta

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