Transponder for remote keyless entry systems
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United States of America Patent
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-
Nov 27, 2001
Grant Date -
N/A
app pub date -
Oct 10, 1996
filing date -
Oct 10, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A road vehicle keyless entry system (10) having an in-vehicle communication processor (11) and a remote transponder (15) is provided. The communication processor (10) has a radio frequency receiver (12), a low frequency transmitter/receiver (13) and a controller (14) capable of encrypting and reading the signals sent and received by the low frequency transmitter/receiver (13). The transponder (15) has a radio frequency transmitter (16) that transmits a signal to the communication processor (11) upon receipt of a manual stimulus and a low frequency transmitter/receiver (17) capable of reading and responding to encrypted signals received from the communication processor (11).
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