PASSIVE PROXIMITY DETECTION
First Claim
1. A method of passive proximity detection comprising:
- sensing a first sound wave using a first audio transducer and generating a first signal representative of the first sound wave;
sensing a second sound wave and generating a second signal; and
comparing characteristics of the first and second signal using a processor to determine if differences between the first and second signals indicate the first audio transducer is proximately located to another object.
1 Assignment
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Accused Products
Abstract
Techniques and devices are disclosed for utilizing passively received audio signals to determine proximity of devices to other objects. In one embodiment, a method of passive proximity detection is provided that includes sensing a first sound wave using a first audio transducer and generating a first signal representative of the first sound wave. A second sound wave is also sensed and a second signal is generated. The method includes comparing characteristics of the first and second signals using a processor to determine if differences between the first and second signals indicate the first audio transducer is proximately located to another object.
50 Citations
20 Claims
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1. A method of passive proximity detection comprising:
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sensing a first sound wave using a first audio transducer and generating a first signal representative of the first sound wave; sensing a second sound wave and generating a second signal; and comparing characteristics of the first and second signal using a processor to determine if differences between the first and second signals indicate the first audio transducer is proximately located to another object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computing device comprising:
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a processor; a storage device coupled to the processor, the storage device storing instructions executable by the processor to determine a proximity of the device to another object based on audio signals; and a first audio transducer configured to sense ambient sound waves and convert the sensed sound waves into an electrical data signal, wherein the device is configured to store a first electrical data signal from the first audio transducer and a second electrical data signal, wherein further the processor is configured to determine if differences between the first and second electrical data signals indicate that the first audio transducer is proximately located to an object external to the device. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A communication device configured to passively determine proximity to other objects, the communication device comprising:
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a multi-sided housing having an aperture to allow for receipt and transmission of sound waves therethrough; an audio transducer located within the housing adjacent to the aperture, wherein the audio transducer is configured to sense ambient sound waves; and a processor configured to evaluate signals generated by the audio transducer to determine if the device is in proximity to other objects based on at least one of;
a narrowing of a spike about a frequency, an amplification of a spike, an increase in low frequency signals, and a diminution of received sound signals indicating muffling. - View Dependent Claims (18, 19, 20)
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Specification