Low power acoustic apparatus and method of operation
First Claim
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1. A method of operating an acoustic system, the method comprising:
- receiving an ultrasonic sound signal at a microphone;
pattern matching the received ultrasonic sound signal to determine when the received ultrasonic sound signal is a desired ultrasonic sound signal;
when the pattern matching indicates the received ultrasonic sound signal is the desired ultrasonic sound signal, transmitting a signal to at least one electronic component;
when the pattern matching indicates the received ultrasonic sound signal is not the desired ultrasonic sound signal, operating the microphone in a low power state of operation.
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Abstract
A method of operating an acoustic system includes detecting an ultrasonic sound signal and pattern matching the received ultrasonic sound signal to determine when the received ultrasonic sound signal is a desired ultrasonic sound signal. The method includes sending a signal to at least one electronic component when the received ultrasonic sound signal is the desired ultrasonic sound signal. The method includes operating the microphone in a lower power state when the received ultrasonic sound signal is not the desired ultrasonic sound signal.
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Citations
34 Claims
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1. A method of operating an acoustic system, the method comprising:
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receiving an ultrasonic sound signal at a microphone; pattern matching the received ultrasonic sound signal to determine when the received ultrasonic sound signal is a desired ultrasonic sound signal; when the pattern matching indicates the received ultrasonic sound signal is the desired ultrasonic sound signal, transmitting a signal to at least one electronic component; when the pattern matching indicates the received ultrasonic sound signal is not the desired ultrasonic sound signal, operating the microphone in a low power state of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus, the apparatus comprising:
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a detector configured to receive an ultrasonic sound signal at a microphone; and a pattern matching module coupled to the detector, the pattern matching module configured to pattern match the received ultrasonic sound signal to determine when the received ultrasonic sound signal is a desired ultrasonic sound signal and when the pattern matching module indicates the received sound signal is the desired ultrasonic sound signal, transmitting a signal to at least one electronic component, and when the pattern matching module indicates the received ultrasonic sound signal is not the desired ultrasonic sound signal, operate the microphone in a low power state of operation. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of operating an acoustic system, the method comprising:
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operating a microphone in a first state of operation such that in the first state of operation the microphone receives an ultrasonic sound signal and determines whether the received ultrasonic signal is a desired ultrasonic sound signal; such that when the microphone determines that the received ultrasonic sound signal is the desired ultrasonic sound signal, the microphone enters a second state of operation, the second state of operation consuming more power than the first state of operation, and such that in the second state of operation the microphone transmits the signal to at least one electronic component; and when the microphone determines that the received ultrasonic sound signal is not the desired ultrasonic sound signal, the microphone returns to the first state of operation. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A method of operating an acoustic system, the method comprising:
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receiving an ultrasonic sound signal at a microphone; upon detecting the ultrasonic sound signal at the microphone, transmitting a first wake-up signal to a processor; receiving the first wake-up signal at the processor and responsively waking up the processor; at the processor pattern matching the received ultrasonic sound signal to determine when the received ultrasonic sound signal is a desired ultrasonic sound signal; when the pattern matching indicates the received ultrasonic sound signal is the desired ultrasonic sound signal, sending a signal from the processor to at least one electronic component; when the pattern matching indicates the received ultrasonic sound signal is not the desired ultrasonic sound signal, operating the microphone in a low power mode of operation. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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Specification