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US 7,398,104 B2Granted
Mobile phone with wireless camera detection
AssigneeQisda Corporation
InventorHai-Tao Yang
Life of this patent
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Abstract
A mobile phone with wireless camera detection. A mobile phone converts the frequency band of a received signal to mobile signal frequency band (for example GSM, DSC or PCS) with added mixer, oscillator, and filter. The converted signal is treated as a mobile signal prior to processing in the base band processor. Detected signal strength is checked to determine whether a wireless camera is currently present.
Claims13
A mobile phone with wireless camera detection operating in detection or communication mode, comprising:
- an antenna;
- a first mobile phone filter, receiving signals from the antenna and outputting a first signal corresponding to a first bandwidth;
- a third filter, receiving signals from the antenna and outputting a detection signal corresponding to a detection bandwidth, corresponding to that used by a wireless camera;
- an oscillator, generating a corresponding frequency which is the difference between the middle values of a wireless camera's transmission bandwidth and a second bandwidth;
- a mixer, generating a second signal by mixing the detection signal and the corresponding frequency, wherein the second signal corresponds to the second bandwidth;
- and
- a signal processor, processing the first signal and the second signal selectively,
- enabling mobile communication using the first signal when in communication mode, and detecting the signal strength of the second signal when in detection mode.
5 more elements
Dependencies are inferred from the claim text.