Self-aligning vehicular transmitter system
First Claim
1. A method of self-aligning a transmitting frequency between a portable transceiving device and a base station transceiving device, wherein the base station transceiving device is mounted in a vehicle for controlling a vehicle accessory function in response to messages broadcast between the transceiving devices, the method comprising the steps of:
- (a) transmitting a test signal from one of a portable or base station transceiving devices to the other of the portable or base station transceiving devices, the test signal having a frequency that varies during the transmission, the varying of the frequency of the test signal generating a plurality of discrete signals;
(b) the other of the portable or base station transceiving devices measuring a RSSI value of each discrete signal;
(c) the other of the portable or base station transceiving devices determining a discrete signal having a maximum RSSI value;
(d) transmitting from the other of the portable or base station transceiving devices a test result signal identifying the discrete signal having the maximum RSSI value to the one of the portable or base station transceiving devices; and
(e) transmitting at least a portion of a subsequent message from the one of the portable transceiving device or the base station transceiving device at an optimum frequency used for the test signal identified by the test result signal.
8 Assignments
0 Petitions
Accused Products
Abstract
A method is provided for self-aligning a transmitting frequency between a portable transceiving device and a base station transceiving device. A test signal is transmitted from one of a portable or base station transceiving devices to the other of the portable or base station transceiving devices. The test signal has a frequency that varies during the transmission. The varying of the frequency of the test signal generates a plurality of discrete signals. The other of the portable or base station transceiving devices measures a RSSI value of each discrete signal. The other of the portable or base station transceiving devices determines a discrete signal having a maximum RSSI value. At least a portion of a subsequent message from the other of the portable transceiving device or the base station transceiving device is transmitted at an optimum frequency used for the test signal identified by the test result signal.
14 Citations
20 Claims
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1. A method of self-aligning a transmitting frequency between a portable transceiving device and a base station transceiving device, wherein the base station transceiving device is mounted in a vehicle for controlling a vehicle accessory function in response to messages broadcast between the transceiving devices, the method comprising the steps of:
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(a) transmitting a test signal from one of a portable or base station transceiving devices to the other of the portable or base station transceiving devices, the test signal having a frequency that varies during the transmission, the varying of the frequency of the test signal generating a plurality of discrete signals; (b) the other of the portable or base station transceiving devices measuring a RSSI value of each discrete signal; (c) the other of the portable or base station transceiving devices determining a discrete signal having a maximum RSSI value; (d) transmitting from the other of the portable or base station transceiving devices a test result signal identifying the discrete signal having the maximum RSSI value to the one of the portable or base station transceiving devices; and (e) transmitting at least a portion of a subsequent message from the one of the portable transceiving device or the base station transceiving device at an optimum frequency used for the test signal identified by the test result signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A self-aligning remote transmitter system for vehicle based applications, the system comprising:
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a base station receiving device for receiving a wireless message for controlling an actuation of at least one accessory function; and a portable receiving device for transmitting wireless message to the vehicle based control module for activating the at least one vehicle accessory function; wherein a test signal is transmitted from one of the portable or base station transceiving devices to the other of the portable or base station transceiving devices, wherein the test signal has a frequency that varies during the transmission, the varying of the frequency of the test signal generating a plurality of discrete signals, wherein a RSSI value of each discrete signal is measured by the other of the portable or base station transceiving devices, wherein the other of the portable or base station transceiving devices determines a discrete signal having a maximum RSSI value, wherein the other of the portable or base station transceiving devices transmits a test result signal identifying the discrete signal having the maximum RSSI value to one of the portable or base station transceiving devices; and
wherein at least a portion of a subsequent message from the one of the portable transceiving device or the base station transceiving device is transmitted at an optimum frequency used for the test signal identified by the test signal result. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of self-aligning a transmitting frequency between a portable transceiving device and a base station transceiving device, wherein the base station transceiving device is mounted in a vehicle for controlling a vehicle accessory function in response to messages broadcast between the transceiving devices, the method comprising the steps of:
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transmitting a test signal from one of a portable or base station transceiving devices to the other of the portable or base station transceiving devices, the test signal having a frequency that varies during the transmission, the varying of the frequency of the test signal generating a plurality of discrete signals; the other of the portable or base station transceiving devices measuring a RSSI value of each discrete signal; the other of the portable or base station transceiving devices determining a discrete signal having a maximum RSSI value; and transmitting at least a portion of a subsequent message from the other of the portable transceiving device or the base station transceiving device at an optimum frequency used for the test signal identified by the test result signal. - View Dependent Claims (17, 18, 19, 20)
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Specification