Portable information terminal apparatus capable of

专利名称：Portable information terminal apparatus

capable of correctly detecting power supplyvoltage

发明人：Kikuchi, Tsuneyuki,Matumoto, Hidehiro申请号：EP97309638.1申请日：19971128公开号：EP0845682A2公开日：19980603

专利附图：

摘要：In a portable information terminal system including a CPU (4) and peripheralcircuits (2,5), there is provided a discharge quantity table for storing remaining power

levels. Each of the remaining power levels is defined based on a state of the portableinformation terminal system as a system state and a voltage of a power supply. A voltagedetecting unit detects the power supply voltage in response to a voltage detectionrequest. A control section monitors the system state, and issues the voltage detectionrequest in response to a voltage check request. The control section refers to thedischarge quantity table based on the power supply voltage detected by the voltagedetecting unit and the monitored system state to determine the remaining power levelof the power supply.

申请人：NEC CORPORATION

地址：7-1, Shiba 5-chome Minato-ku Tokyo JP

国籍：JP

代理机构：Moir, Michael Christopher

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