Patent ID: 6229990
Filing Date: 2001-05-08
Classification: H04M,H04W,Y02D

Abstract:
A radio apparatus powered by a rechargeable battery for downloading predetermined data through a radio communication line, said radio apparatus comprising:data transmission request means for requesting a download site to transmit said predetermined data;data reception means for receiving said predetermined data transmitted from said download site;data recording means for sequentially writing said predetermined data received at said data reception means in a recording medium;voltage detection means for detecting a voltage value of said rechargeable battery;write interrupt control means for interrupting said data recording means writing said predetermined data when the voltage value detected by said voltage detection means is smaller than a threshold value required by said data recording means to write data in said recording medium;line disconnection means for disconnecting the radio communication line between said radio apparatus and said download site when the writing of said predetermined data is interrupted;memory means for memorizing a telephone number of said download site and information of said predetermined data when the writing is interrupted;line connection means for connecting the radio communication line between said radio apparatus and said download site by using said download site telephone number memorized in said memory means when the voltage value detected by said voltage detection means is greater than said threshold value required by said data recording means after said line was disconnected by said line disconnection means;data resend request means for requesting said download site to transmit remaining data of said predetermined data after a writing interruption by informing said download site of information of said predetermined data memorized in said memory means after said radio communication line is connected by said line connection means; andresume control means controlling said data recording means for resuming writing of said remaining data received at said data reception means in said recording medium.