Communication apparatus

1. A communication apparatus having a main battery for performing main operations of the communication apparatus so as to connect or remove from the device freely, comprising:

a clock unit configured to count a current time by using power supplied by the main battery,

an acquiring part configured to acquire the current time included in information received from a GPS base station in response to reconnection of the main battery after removal even if a status of a power supply is OFF, and

a control unit configured to set the current time acquired by the acquiring part as the current time counted.

2. The communication apparatus according to claim 1 , wherein

the clock unit is not capable of counting the current time if the battery is not connected to the communication apparatus.

3. The communication apparatus according to claim 2 , wherein

the clock unit is configured to count the current time and the acquiring part is configured to acquire the current time, even if the main battery is connected to the communication apparatus, and

the control unit is configured to set even if the status of the power supply is ON or OFF.

4. The communication apparatus according to claim 1 , further comprising:

a storage unit configured to store a schedule information, the schedule information including a designated time information of the schedule, a content information indicating a content displayed at the designated time of schedule, and an execution status information indicating whether notification has been done or not, and wherein

the control unit controls to, if the control unit sets the current time and if the control unit detects not to inform the content information despite passing the designated time, inform the content information passing the designated time.

5. The communication apparatus according to claim 2 , further comprising:

a storage unit configured to store a schedule information, the schedule information including a designated time information of the schedule, a content information indicating a content displayed at the designated time of schedule, and an execution status information indicating whether notification has been done or not, and wherein

the control unit controls to, if the control unit sets the current time and if the control unit detects not to inform the content information despite passing the designated time, inform the content information corresponding to the designated time passed.

6. The communication apparatus according to claim 4 , wherein, the control unit informs the content information with alarm.

7. The communication apparatus according to claim 5 , wherein, the control unit informs the content information with alarm.

8. A communication apparatus having a rechargeable main battery for performing main operations of the communication apparatus so as to connect or remove from the device freely, comprising:

a clock unit configured to count a current time by using power supplied by the rechargeable main battery,

an acquiring part configured to acquire the current time included in information received from a GPS base station in response to starting of a charging of the rechargeable main battery after a power cutoff caused by a low power level of the rechargeable main battery even if a status of a power supply is OFF, and

a control unit configured to set the current time acquired by the acquiring part as the current time counted.

9. The communication apparatus according to claim 8 , wherein

the clock unit is not capable of counting the current time if the battery is not connected to the communication apparatus.

10. The communication apparatus according to claim 9 , wherein

the clock unit is configured to count the current time and the acquiring part is configured to acquire the current time, even if the rechargeable main battery is connected to

the communication apparatus, and

the control unit configured to set even if the status of the power supply is ON or OFF.

11. The communication apparatus according to claim 8 , further comprising:

a storage unit configured to store a schedule information, the schedule information including a designated time information of the schedule, a content information indicating a content displayed at the designated time of schedule, and an execution status information indicating whether notification has been done or not, and wherein

the control unit controls to, if the control unit sets the current time and if the control unit detects not to inform the content information despite passing the designated time, inform the content information passing the designated time.

12. The communication apparatus according to claim 9 , further comprising:

a storage unit configured to store a schedule information, the schedule information including a designated time information of the schedule, a content information indicating a content displayed at the designated time of schedule, and an execution status information indicating whether notification has been done or not, and wherein

the control unit controls to, if the control unit sets the current time and if the control unit detects not to inform the content information despite passing the designated time, inform the content information corresponding to the designated time passed.

13. The communication apparatus according to claim 11 , wherein, the control unit informs the content information with alarm.

14. The communication apparatus according to claim 12 , wherein, the control unit informs the content information with alarm.