Method and Apparatus for the Staged Detection of RF Energy
First Claim
1. A method comprising:
- operating an implanted medical device capable of receiving wireless communication signals; and
monitoring a communication signal received in a receiver in the implanted medical device using a staged detection process to detect characteristics of the received communication signal, the staged detection process further comprising;
performing a desired number of stages of measurements of a signal quantity of the received communication signal, wherein a combined signal quantity of the received communication signal is calculated by updating the signal quantity measurements performed in prior stages with signal quantity measurements performed at each stage,comparing the combined signal quantity of the received communication signal at each measurement stage against a corresponding threshold value for that stage, andaborting the staged detection process if the combined signal quantity fails to meet the corresponding threshold value for that stage.
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Accused Products
Abstract
A low power method and apparatus for detecting wake-up signals in sniff processing performed in an implantable medical device (IMD) using a staged detection of RF energy in signals received in order to conserve current consumption. Incoming signals are monitored in a plurality of detection stages which each incrementally increase the accuracy of detecting whether the received signal is a wake-up communication signal. A desired number of stages of signal quantity measurements are performed such that a combined signal quantity is calculated by updating the signal quantity measurements performed in prior stages with signal quantity measurements performed at each stage. The combined signal quantity of the received communication signal is compared at each detection stage against a corresponding threshold value for that stage. The staged detection process aborts sniff processing if the combined signal quantity fails to meet the corresponding threshold value for that stage.
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Citations
19 Claims
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1. A method comprising:
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operating an implanted medical device capable of receiving wireless communication signals; and monitoring a communication signal received in a receiver in the implanted medical device using a staged detection process to detect characteristics of the received communication signal, the staged detection process further comprising; performing a desired number of stages of measurements of a signal quantity of the received communication signal, wherein a combined signal quantity of the received communication signal is calculated by updating the signal quantity measurements performed in prior stages with signal quantity measurements performed at each stage, comparing the combined signal quantity of the received communication signal at each measurement stage against a corresponding threshold value for that stage, and aborting the staged detection process if the combined signal quantity fails to meet the corresponding threshold value for that stage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A low power, wake-up communication signal detector in an implantable medical device comprising:
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a receiver configured to detect a communication signal being received from a remote device; and a signal detector configured to monitor the communication signal received using a staged detection process to detect whether the received communication signal is a wake-up communication signal intended for the implanted medical device, wherein the signal detector is further configured perform the staged detection process by; performing a desired number of stages of measurements of a signal quantity of the received communication signal, wherein a combined signal quantity of the received communication signal is calculated by updating the signal quantity measurements performed in prior stages with signal quantity measurements performed at each stage, comparing the combined signal quantity of the received communication signal at each measurement stage against a corresponding threshold value for that stage, and aborting the staged detection process if the combined signal quantity fails to meeting the corresponding threshold value for that stage. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A telemetry module in an implantable medical device comprising:
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wake-up receiver means configured to perform sniff operations for detecting whether a wake-up communication signal is being received by the implantable medical device; and signal detector means for monitoring a communication signal received in a receiver in the implanted medical device using a staged detection process to detect characteristics of the received communication signal, the staged detection process further comprising; performing a desired number of stages of measurements of a signal quantity of the received communication signal, wherein a combined signal quantity of the received communication signal is calculated by updating the signal quantity measurements performed in prior stages with signal quantity measurements performed at each stage, comparing the combined signal quantity of the received communication signal at each measurement stage against a corresponding threshold value for that stage, and aborting the staged detection process if the combined signal quantity fails to meet the corresponding threshold value for that stage. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification