Apparatus and method for changing frequency deviation
First Claim
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1. A method for transmitting frequency-shift keying (FSK)-based tire pressuring monitoring system (TPMS) data, comprising,at a first time and at a single tire pressure monitoring (TPM) sensor, determining a first protocol to be used in the transmission of tire pressure monitoring data from a transmitter;
- based upon the first protocol, selecting a first deviation between a first high frequency that is used to transmit a logic one and a first low frequency to transmit a logic zero;
wherein the first deviation is selected at least in part by comparing a first deviation threshold with a first high frequency deviation associated with the first protocol;
transmitting the FSK-based TPMS data according to the first high frequency when there is a logic one and first low frequency when there is a logic zero;
at a second time that occurs after the first time and at the same TPM sensor, subsequently determining a second protocol to be used in the transmission of tire pressure monitoring data from the transmitter;
based upon the second protocol, selecting a second deviation between a second high frequency that is used to transmit a logic one and a second low frequency to transmit a logic zero;
wherein the second deviation is selected at least in part by comparing a second deviation threshold with a second high frequency deviation associated with the second protocol;
wherein the first deviation is different than the second deviation;
transmitting FSK-based TPMS data according to the second high frequency when there is a logic one and second low frequency when there is a logic zero;
wherein the first protocol is switched to the second protocol on-the-fly at the single TPM sensor during the operation of the TPM sensor;
wherein the first protocol and the second protocol comprise one or more of a data format or baud rate;
wherein the first protocol and the second protocol are determined at least in part by a controller.
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Abstract
A protocol to be used in the transmission is determined. Based upon the protocol, the transmission frequency range of a clock is selectively altered. TPMS data is transmitted according to the altered transmission frequency range of the clock.
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Citations
19 Claims
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1. A method for transmitting frequency-shift keying (FSK)-based tire pressuring monitoring system (TPMS) data, comprising,
at a first time and at a single tire pressure monitoring (TPM) sensor, determining a first protocol to be used in the transmission of tire pressure monitoring data from a transmitter; -
based upon the first protocol, selecting a first deviation between a first high frequency that is used to transmit a logic one and a first low frequency to transmit a logic zero; wherein the first deviation is selected at least in part by comparing a first deviation threshold with a first high frequency deviation associated with the first protocol; transmitting the FSK-based TPMS data according to the first high frequency when there is a logic one and first low frequency when there is a logic zero; at a second time that occurs after the first time and at the same TPM sensor, subsequently determining a second protocol to be used in the transmission of tire pressure monitoring data from the transmitter; based upon the second protocol, selecting a second deviation between a second high frequency that is used to transmit a logic one and a second low frequency to transmit a logic zero; wherein the second deviation is selected at least in part by comparing a second deviation threshold with a second high frequency deviation associated with the second protocol; wherein the first deviation is different than the second deviation; transmitting FSK-based TPMS data according to the second high frequency when there is a logic one and second low frequency when there is a logic zero; wherein the first protocol is switched to the second protocol on-the-fly at the single TPM sensor during the operation of the TPM sensor; wherein the first protocol and the second protocol comprise one or more of a data format or baud rate; wherein the first protocol and the second protocol are determined at least in part by a controller. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for transmitting frequency-shift keying (FSK)-based tire pressuring monitoring system (TPMS) data, comprising,
an interface having an input and an output; -
a controller coupled to the interface, the controller configured to determine at a first time a first protocol to be used in the transmission of tire pressure monitoring data from a transmitter, and based upon the first protocol, select a first deviation between a first high frequency that is used to transmit a logic one and a first low frequency to transmit a logic zero, wherein the first deviation is selected at least in part by comparing a first deviation threshold with a first high frequency deviation associated with the first protocol, the controller configured to transmit the FSK-based TPMS data according to the first high frequency when there is a logic one and first low frequency when there is a logic zero, the controller configured to at a second time that occurs after the first time subsequently determine a second protocol to be used in the transmission of tire pressure monitoring data from the transmitter, and based upon the second protocol, select a second deviation between a second high frequency that is used to transmit a logic one and a second low frequency to transmit a logic zero, wherein the second deviation is selected at least in part by comparing a second deviation threshold with a second high frequency deviation associated with the second protocol, wherein the first deviation is different than the second deviation, the controller configured to transmit TPMS data according to the second high frequency when there is a logic one and second low frequency when there is a logic zero; wherein the first protocol is switched to the second protocol on-the-fly at the single TPM sensor during the operation of the TPM sensor; wherein the first protocol and the second protocol comprise one or more of a data format or baud rate. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A computer usable non-transitory medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement a method of transmitting frequency-shift keying (FSK)-based tire pressure monitor information, the method comprising:
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at a first time and at a tire pressure monitoring (TPM) sensor, determining a first protocol to be used in the transmission of tire pressure monitoring system (TPMS) data; based upon the first protocol, selecting a first deviation between a first high frequency that is used to transmit a logic one and a first low frequency to transmit a logic zero; wherein the first deviation is selected at least in part by comparing a first deviation threshold with a first high frequency deviation associated with the first protocol; transmitting the FSK-based TPMS data according to the first high frequency when there is a logic one and first low frequency when there is a logic zero; at a second time that occurs after the first time and at the same TPM sensor, subsequently determining a second protocol to be used in the transmission of tire pressure monitoring data from the transmitter; based upon the second protocol, selecting a second deviation between a second high frequency that is used to transmit a logic one and a second low frequency to transmit a logic zero; wherein the second deviation is selected at least in part by comparing a second deviation threshold with a second high frequency deviation associated with the second protocol; wherein the first deviation is different than the second deviation; transmitting the FSK-based TPMS data according to the second high frequency when there is a logic one and second low frequency when there is a logic zero; wherein the first protocol is switched to the second protocol on-the-fly at the single TPM sensor during the operation of the TPM sensor; wherein the first protocol and the second protocol comprise one or more of a data format or baud rate; wherein the first protocol and the second protocol are determined at least in part by a controller. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification