Self-aligning vehicular transmitter system

Details Self-aligning vehicular transmitter system Self-aligning vehicular transmitter system

2004-12-14

2009-08-25

Sharma, Sujatha (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Remote control of receiver

C455S099000, C455S345000, C455S420000, C455S067110, C455S569200

Reexamination Certificate

active

07580696

ABSTRACT:
A method is provided for self-aligning a transmitting RF frequency between a portable transceiving device and a base station transceiving device. The base station transceiving device is mounted in a vehicle for controlling a vehicle accessory function in response to RF messages broadcast between the transceiving devices. The RF signal is transmitted from one of the portable or base station transceiving devices to the other of the portable or base station transceiving devices. The frequency of the RF signal is varied during the transmission. A RSSI value of a received RF signal is measured at selected frequencies. A respective frequency having a maximum RSSI value is determined. At least a portion of a subsequent RF message is transmitted from one of the portable transceiving device or base station transceiving device using the respective frequency.

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