Electronic devices with radio-frequency collision resolution capabilities

A method for controlling frequency collisions in an electronic device that has at least one victim device and at least one adjustable clock source, comprising:

• with the electronic device, detecting a location in which the electronic device is operating using country code data;
• with a clock manager implemented on the electronic device, identifying a list of safe frequencies at which to operate the adjustable clock source based on the location so that clock signal harmonics associated with the adjustable clock source do not interfere with the victim device;
• and
• with the clock manager, adjusting the adjustable clock source to produce a clock signal having a fundamental frequency that falls within the list of safe frequencies, wherein identifying the list of safe frequencies based on the location comprises:
• generating a list of victim frequencies associated with operation of the victim device;
• generating a list of unsafe frequencies based on the list of victim frequencies;
• and
• inverting the list of unsafe frequencies to obtain the list of safe frequencies.

An electronic device comprising:

• wireless communications circuitry that operates in at least one communications band;
• at least one adjustable clock source that includes a phase-locked loop circuit and that produces a clock signal, wherein the phase-locked loop circuit includes at least one frequency divider and clock spread profile control circuitry operable to apply control signals to the at least one frequency divider for adjusting the clock signal;
• circuitry with which a clock manager is implemented, wherein the clock manager dynamically adjusts the adjustable clock source to prevent harmonics of the clock signal from interfering with the communications band;
• and
• a user interface operable to receive location data from a user, wherein the clock manager dynamically adjusts the adjustable clock source at least partly based on the location data.

A method for controlling a handheld electronic device having at least one radio-frequency transceiver and at least one adjustable clock source that produces a clock signal, wherein the radio-frequency transceiver is operable in multiple frequency bands, comprising:

• with the handheld electronic device, detecting a location in real time in which the electronic device is operating using country code data;
• determining a frequency range that is associated with communications handled by the radio-frequency transceiver based on the location;
• dynamically adjusting the adjustable clock source to prevent harmonic frequencies of the clock signal from overlapping the frequency range;
• and
• prior to detecting the location, temporarily adjusting the adjustable clock source to prevent harmonic frequencies of the clock signal from overlapping the multiple frequency bands.