Object identification system
First Claim
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1. In a transponder/responder system wherein said transponder is battery operated and is adapted to emit a transponder signal in response to the receipt of a remote enabling signal;
- a responder including means for generating a timing signal, means responsive to said timing signal for generating said remote enabling signal, means for receiving said transponder signal, and means for remotely checking the condition of said battery by temporally comparing the time of receipt of said transponder signal relative to said timing signal.
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Abstract
A transponder/interrogator system for remotely identifying objects. The interrogator emits infrared pulses to activate and remotely clock the transponder. Upon such activation, the transponder emits a unique code in the form of infrared pulses in accordance with a program stored in a recirculating shift register. The interrogator receives the infrared pulses from the transponder and decodes them. The decoded information is then supplied to a controller which runs various status checks on the object identified.
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6 Claims
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1. In a transponder/responder system wherein said transponder is battery operated and is adapted to emit a transponder signal in response to the receipt of a remote enabling signal;
a responder including means for generating a timing signal, means responsive to said timing signal for generating said remote enabling signal, means for receiving said transponder signal, and means for remotely checking the condition of said battery by temporally comparing the time of receipt of said transponder signal relative to said timing signal. - View Dependent Claims (2, 3, 4, 5, 6)
Specification