| 摘要 |
PROBLEM TO BE SOLVED: To perform data communication while effectively using the remaining capacity of both batteries by enabling the supply of power to a PC part both from device side and from radio equipment side when a PC card is connected to the device side of notebook-sized PC or PDA. SOLUTION: When the PC card is connected to the device side of the notebook-sized PC or PDA, a user operates a key 1 and selects whether or not a power source is to be taken at the notebook-sized PC or PHS (R) part and according to these contents, a control part 2 operates any one of power source circuit 5 or power source circuit 8. When the power source circuit 5 is turned on, the power source circuit 5 secures power supply from a charging battery 4 of the PHS (R) part and supplies power to a circuit 11 of the PC card part. When the power source circuit 8 is turned on, the power source circuit 8 secures power supply from the notebook-sized PC or PDA through a connector 7 and supplies power to the circuit 11 of the PC card part. |
