Patent ID: 8028187

Claim:
A dual-mode communication apparatus, comprising: a microprocessor, receiving an operation system (OS) clock tick to execute a real-time program task; a first tick generator, receiving a first predetermined number of first clocks to generate a first clock tick when a first clock is active; a second tick generator, receiving a second predetermined number of second clocks to generate a second clock tick when a second clock is active; and an operation system tick module, coupled to the first and second tick generators, comprising: a tick converter, coupled to at least one of the first and second tick generators, converting the second clock tick such that the converted second clock tick has a converted clock tick rate substantially identical to the clock tick rate of the first clock tick; and an OS tick generator, coupled to the tick converter, receiving the first clock tick and the converted second clock tick to generate the OS clock tick for use in the microprocessor.