Air leak self-diagnosis for a communication device
AssigneeMotorola, Inc.
InventorsJorge Garcia, Peter Pavlov, Jianfeng Shi, David Yeager
Life of this patent
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Abstract
A communication device (100) is provided with a technique (400) for self-diagnosing an air leak. The leak is determined without having to open the communication device by applying a temporary excitation signal to the speaker terminals (402) to produce a damped response (404) and then monitoring the damped response (406) of the speaker.
Claims10
A method of testing for an air leak in a communication device having a speaker with speaker terminals, comprising the step of:
- monitoring a back electromotive force at the speaker terminals after an excitation signal is applied to and removed from the speaker terminals.
A method of testing for an air leak in a communication device having a speaker with speaker terminals, comprising the step of:
- applying a temporary excitation signal to the speaker terminals to produce a damped response;
- monitoring the damped response of the speaker;
- determining the Q of the damped response;
- comparing the Q to a predetermined threshold;
- and
- providing an alert at the communication device when the Q falls outside of the predetermined threshold.
A communication device, including:
- a housing;
- a speaker coupled to the housing;
- and
- the communication device providing air leak self-diagnosis by monitoring signal characteristics of the speaker.
Dependencies are inferred from the claim text.