发明名称 POWER SWITCHING DEVICE OF MOBILE COMMUNICATION TERMINAL, CAPABLE OF CONTROLLING POWER WITHOUT USING ANOTHER TRANSISTOR OR ANOTHER DIODE BY USING CPLD
摘要 PURPOSE: A power switching device of a mobile communication terminal is provided to control power without using another transistor or another diode, by using a CPLD(Complex Programmable Logic Device), thereby reducing power consumption and a production cost. CONSTITUTION: A power switch hold signal input end(PS_HOLD) supplies a power enable signal(P_EN) to an MSM(50) through a VHDL(VHSIC Hardware Description Language) device(60). A power on switch input end(PWR_ON_SW), which is an inner signal of a mobile communication terminal, supplies a sense signal(ON_SW_SENSE) showing that a power switch is turned on to the MSM(50) through the VHDL device(60). A charger power input end(VEXT_DC) and a test point input end(TP) of the terminal supply an external power sense signal(EXT_PWR_SENSE) and an external analog digital conversion signal(EXT_DC_ADC) to the MSM(50) through the VHDL device(60).
申请公布号 KR20040095808(A) 申请公布日期 2004.11.16
申请号 KR20030026793 申请日期 2003.04.28
申请人 LG ELECTRONICS INC. 发明人 CHOI, YONG SEON
分类号 H04B1/40 主分类号 H04B1/40
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