Patent ID: 7631215

Claim:
A battery-driven personal digital assistant which wirelessly communicates with other terminals, comprising: a memory means for storing data; a loss detection means for detecting whether the personal digital assistant is in a lost state; a value information retention means for retaining a value assessment index indicating values of data stored in the memory means; a recovery sequence determination means for determining a recovery sequence of data stored in the memory means based on the value assessment index retained in the value information retention means when the lost state is detected by the loss detection means; a transmission means for transmitting data stored in the memory means to another terminal based on the recovery sequence determined by the recovery sequence determination means; a remaining battery power level measurement means for measuring remaining battery power level; and a consumption power retention means for retaining consumption power required for data transmission; wherein the recovery sequence determination means determines the recovery sequence of data stored in the memory means based on the remaining battery power level measured by the remaining battery power level measurement means, the consumption power retained in the consumption power retention means and the value assessment index retained in the value information retention means.