Systems and methods for reducing digital interference of external signals
AssigneeCirrus Logic, Inc.
InventorsJohn L. Melanson, John C. Tucker
Life of this patent
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Abstract
A mobile device may include a digital data driver and digital data receiver for communication of digital signals within the mobile device at a selected clock rate. The mobile device may also have a device external for the digital data driver and digital data receiver for communication of external signals, such as radio-frequency signals, to and from the mobile device. To avoid interference of frequency harmonics of a digital signal with such external signals, the digital data driver may be configured to control the digital signal based on the frequency of the external signals, such that interference of the external signal by spectral content of the digital signal is minimized, while maintaining the selected clock rate.
Claims25
A system comprising:
- a digital data driver for generating a digital signal for communication to a digital data receiver at a selected clock rate, the digital data driver configured to:
- receive an indication of a frequency of an external signal associated with a device external to the digital data driver and the digital data receiver;
- and
- when generating the digital signal, control the digital signal based on the frequency such that interference of the external signal by spectral content of the digital signal is minimized, while maintaining the selected clock rate.
A method comprising:
- receiving an indication of a frequency of an external signal associated with a device external to a digital data driver and a digital data receiver, wherein the digital data driver is configured to generate a digital signal for communication to the digital data receiver at a selected clock rate;
- and
- controlling the digital signal based on the frequency such that interference of the external signal by spectral content of the digital signal is minimized, while maintaining the selected clock rate.
Dependencies are inferred from the claim text.