US 5,231,273 AGranted

Inventory management system

AssigneeComtec Industries

InventorsRobert L. Caswell, Herbert J. Moore, Marcus P. Escobosa

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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.

Claims12

Dependent claims

An inventory management control system comprising,

transponder means for selectively generating and receiving an RF signal,
processor means connected for controlling the operation of said transponder means,
energy manager means including multivibrator means and voltage regulator means,
said energy manager means connected for controlling the operation of said transponder means and said processor means so as to establish a duty cycle which requires a minimized utilization of energy thereby,
transceiver means,
antenna means connected to said transceiver means,
analog-to-digital converter means connected to said transceiver means to measure the strength of the signal received at said antenna means, and
computer means connected to said converter means to operate on the signal received at said antenna means.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/682,721Filed 9 Apr 1991
Granted: 27 Jul 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G06Q 10/087
Logistics, e.g. warehousing, loading or distribution; Inventory or stock management: inventory or stock management, e.g. order filling,…
G06K 7/0008
Methods or arrangements for sensing record carriers, e.g. for reading patterns: general problems related to the reading of electronic memory…
G06K 7/10346
Using at least one antenna particularly designed for interrogating the wireless record carriers: the antenna being of the far field type, e.g. HF…
G06Q 10/0877
Inventory or stock management, e.g. order filling, procurement or balancing against orders: by inventory control or reporting using inventory…

Family

No related US applications are recorded in the indexed filing history.

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