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US 2010/0074631 A1Published application
Frequency-agile infrared receiver
AssigneeApple Inc.
InventorPeter H. Mahowald
Life of this patent
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Abstract
An infrared receiver is provided that may include an infrared sensor, a band-pass filter, and a processor. The processor may be configured to transmit a confirmation signal to the band-pass filter if the signal is distinguishable from noise.
Claims20
A receiver comprising:
- a sensor for receiving a signal;
- a band-pass filter in communication with the sensor;
- and
- a processor in communication with the band-pass filter, wherein the processor is configured to transmit a confirmation signal to the band-pass filter if the signal is distinguishable from noise.
1 more element
A method for receiving infrared signals comprising:
- receiving an infrared signal having a modulation frequency;
- filtering the infrared signal based on a center frequency;
- and
- updating the center frequency based on the modulation frequency.
1 more element
A band-pass filter comprising:
- a filter module having a center frequency;
- an input module for receiving an infrared signal modulated at a carrier frequency;
- and
- a filter processing module for updating the center frequency based on the carrier frequency if a confirmation signal is received, wherein the confirmation signal indicates the infrared signal comprises a predetermined transmission format.
1 more element
A computer program product including instructions embodied on a computer readable medium for filtering a signal which, when executed by a processor, cause a processor to perform the steps of:
- receiving a signal modulated at a carrier frequency;
- and
- changing a band-pass filter setting if a confirmation signal is received.
Dependencies are inferred from the claim text.