Method and system for automatic adjustment and diagnosis of radio frequency identification systems using programmable checktags
AssigneeIntermec IP Corp.
InventorCharles Milton McLean
Life of this patent
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Abstract
A method and system is provided for automatically adjusting a radio frequency communication system to define the spatial dimensions of a read zone and no-read zone using programmable checktags. The system comprises a controller adapted to send and receive data from two subsets of a plurality of transponders. The first subset of transponders is located in a spatial read zone, and the second subset of transponders is located in a spatial no-read zone. The system automatically adjusts transmission parameters to ensure that only the first subset of transponders is able to be read.
Claims23
A method for communicating between a controller and a plurality of transponders, said method comprising:
- disposing a first subset of said plurality of transponders in a desired read zone of said controller;
- disposing a second subset of said plurality of transponders in a desired no-read zone of said controller;
- transmitting a first signal from said controller to said first subset of said plurality of transponders;
- attempting to receive a first responsive signal from said first subset of said plurality of transponders by said controller in response to said first signal;
- transmitting a second signal from said controller to said second subset of said plurality of transponders;
- attempting to receive a second responsive signal from said second subset of said plurality of transponders by said controller in response to said second signal;
- and
- adjusting transmitting parameters of said controller to permit communications with said first subset of said plurality of transponders and to preclude communications with said second subset of said plurality of transponders.
A system for automatically adjusting communication parameters comprising:
- a controller adapted to send and receive data from a plurality of transponders, said controller further comprising a processor having stored instructions that are executed to adjust communication parameters, and a radio coupled to said processor and having a receiver and a transmitter, said communication parameters determining operation of said radio, and
- a plurality of transponders spaced from said controller and being adapted to receive signals from and transmit signals to said controller, said plurality of transponders further comprising a first subset of said plurality of transponders disposed within a spatial read zone and a second subset of said plurality of transponders disposed outside said spatial read zone;
- wherein said communication parameters are adjusted by operation of said processor in conjunction with said stored instructions to permit communication with said first subset of said plurality of transponders and preclude communication with said second subset of said plurality of transponders.
Dependencies are inferred from the claim text.