Tire pressure monitoring and remote keyless entry system using asynchronous duty cycling
First Claim
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1. A data detection device, comprising:
- a receiver for receiving first data and second data;
a module that checks for the first data over a first duty cycle and checks for the second data over a second duty cycle that is asynchronous with the first duty cycle, wherein the module causes a controller to operate in a different mode when the receiver receives at least one of the first data and the second data.
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Abstract
A device and method detects two different types of data, such as tire pressure monitoring system (TPMS) data and remote keyless entry (RKE) data and reduces current draw by duty cycling a receiver in the device asynchronously to intersperse multiple RKE sniffing periods in between consecutive, longer TPMS/RKE sniffing periods. The asynchronous duty cycle ensures that the sniffing periods conform to the actual length of the RKE data and TPMS data periods more closely, minimizing the likelihood of false wakeups caused by noise output by the receiver.
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Citations
21 Claims
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1. A data detection device, comprising:
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a receiver for receiving first data and second data;
a module that checks for the first data over a first duty cycle and checks for the second data over a second duty cycle that is asynchronous with the first duty cycle, wherein the module causes a controller to operate in a different mode when the receiver receives at least one of the first data and the second data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A data detection method, comprising:
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checking for receipt of first data over a first duty cycle;
checking for receipt of second data over a second duty cycle that is asynchronous with the first duty cycle; and
waking a controller when at least one of the first data and the second data are received. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification