Patent ID: 7085594
Filing Date: 2006-08-01
Classification: H04M,H04W,Y02D

Abstract:
1. A portable telephone apparatus, comprising: a body for removably accommodating a cell therein; a cell cover mounted for opening and closing motion on said body for covering the cell; a volatile memory provided in said body; a non-volatile memory provided in said body; a cell remaining power detection section provided in said body for detecting a remaining power of the cell and outputting a cell remaining power detection signal; a cell cover opening/closing detection section provided in said body for detecting opening or closing of said cell cover; a display section provided on said body; a control circuit provided in said body for generating an interruption signal of cell remaining power detection when the cell remaining power detection signal is received from said cell remaining power detection section and generating an interruption signal of cell cover opening when a cell cover opening signal is received from said cell cover opening/closing detection section; and a CPU provided in said body and adapted to interrupt, when the interruption signal of cell remaining power detection is received from said control circuit, a process being currently performed by said CPU and then transfer only those data which require retention from said volatile memory to said nonvolatile memory and control said display section to display a warning, whereafter said CPU disables later updating of said volatile memory, said CPU being further adapted to interrupt, when the interruption signal of cell cover opening is received from said control circuit, a process being currently performed by said CPU and then transfer only those data which require retention from said volatile memory to said non-volatile memory.