COMPOSITE MOBILE TERMINAL FOR REDUCING NOISE IN HIGH SPEED DATA COMMUNICATION, PARTICULARLY FOR REDUCING HARDWARE NOISE GENERATED FROM A LOCAL FREQUENCY GENERATOR BY CONTROLLING THE LOCAL FREQUENCY GENERATING UNIT

摘要

PURPOSE: A composite mobile terminal for reducing noise in high speed data communication is provided to ensure more stable high speed data communication by reducing hardware noise generated from a local frequency generating unit. CONSTITUTION: A controller(100) outputs a high speed data transmission control signal(110) used to indicate a high speed data transmission state, together with a sleep signal(13) used to control power of a local frequency generating unit(140). A local frequency generator(120) generates a local frequency upon receipt of an output signal of an operation selector(130). The operation selector(130) receives the sleep signal(130) and the high speed data transmission control signal(110) from the controller(100) and transmits an output obtained by combining the sleep signal(13) and the high speed data transmission control signal(110) to the local frequency generator(120). Upon receiving the output signal of the operation selector(130), the local frequency generator(120) generates a local frequency.