Patent ID: 6198820
Filing Date: 2001-03-06
Classification: H04W,Y02D

Abstract:
A portable remote terminal apparatus comprising:a clock oscillator for generating a high-frequency clock signal;a CPU switching between a normal operating mode and a sleep mode in response to the high-frequency clock signal;an input device;an input detecting circuit for detecting an input from the input device; andan interrupt controller connected to the input detecting circuit,wherein when the portable remote terminal apparatus enters an intermittent receiving state, the CPU outputs a stop signal to stop the operation of the clock oscillator to switch the CPU into the sleep mode, andwherein in response to detecting an input signal from the input device, the input detecting circuit transmits the input signal to the CPU and outputs a signal to the interrupt controller, the interrupt controller activates the clock oscillator in response to the signal from the input detecting circuit, and the CPU switches to the normal operating mode in response to the clock signal from the clock oscillator.