Abstract: A method and system for remotely controlling a portable wireless communication handset is disclosed. The method includes receiving (304) a control signal at a wireless accessory transceiver of the portable wireless communication handset. The method also includes interpreting (308) the control signal to control a function of the portable wireless communication handset when a condition is satisfied. Moreover, the method includes re-mapping (312) the control signal to control a function of an application controlled accessory, only when the application controlled accessory is running and the condition is not satisfied.

Abstract: EMI spur interference is reduced in a system where the desired signal has periodically repeating components without destructively interfering with the repeating components. The frequency of the spur interference is determined (203) and fed to a notch filter (201) so as to center the notch at the frequency of the spur interference. Determination of the frequency is scheduled (601) to avoid cancellation of desired periodically repeating components of the signal.

Abstract: A monitor (102) is suitable for monitoring the data integrity of a comb filter (101). Generally, the filter will include at least one differencer stage, at least one buffer stage, and at least one integrator stage, including an output integrator stage (500). The output integrator stage will include a most-significant input bit (150) ("I"), a most-significant output bit (130) ("O"), and a carry bit (140) ("C"). In one embodiment, the monitor includes a detector (600) for detecting an overflow condition in the filter based on the equation (inverse C) * (O) * (I)+(C) * (inverse O) * (inverse I). The monitor also includes a waveform generator (700) that, in response to the occurrence of an overflow condition, generates a resetting waveform (170) of a predetermined shape and time duration, that is then coupled to the resetting terminals of all stages in the filter.