Electronic device with dynamic noise spectrum control

摘要

An electronic device may contain clock circuits, transmitters, and other circuits that serve as sources of noise signals. The noise signals may be characterized by a noise spectrum. The noise spectrum produced by a noise source can be adjusted by adjusting spread spectrum clock circuitry in a clock circuit, by adjusting data scrambling circuitry in a transmitter circuit, or by making other dynamic adjustments to the circuitry of the electronic device. During operation of the electronic device, sensitive circuitry in the device such as wireless receiver circuitry may be adversely affected by the presence of noise from a noise source in the device. Based on information such as which receiver bands and/or channels are being actively received and target sensitivity levels for the receiver circuitry, control circuitry within the electronic device can determine in real time how to minimize interference between the noise source and the wireless receiver circuitry.

主权项

1. A method for minimizing interference in an electronic device that has at least one victim device and that has at least one aggressor device characterized by a noise spectrum, comprising:
with control circuitry in the electronic device, determining whether to modify the noise spectrum to minimize interference between the aggressor device and the victim device; and in response to determining that the noise spectrum is to be modified to minimize interference, activating data scrambling in the electronic device.