Cellular phone, and data protection method and program thereof

Details Cellular phone, and data protection method and program thereof Cellular phone, and data protection method and program thereof

2006-07-25

2006-07-25

Le, Lana (Department: 2685)

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

C455S573000, C455S575100, C455S082000

Reexamination Certificate

active

07082288

ABSTRACT:
When a casing opening/closing detection circuit detects folding of a casing, a control circuit transmits an interruption signal to a CPU. Upon reception of the interruption signal, the CPU backs up data, which is to be protected and stored in a RAM, by transferring it to a FLASH ROM through a bus. In addition, when a battery residual amount detection circuit detects that a battery residual amount has dropped below a predetermined value because it was left unattended for a long time, the information of detection is similarly transmitted through an interruption signal to the CPU. By using the CPU for executing backing-up, and by using a battery falling-off prevention lock to impose physical restrictions in order to prevent falling-off of a battery during use of a cellular phone, data loss caused by unexpected occurrence such as battery falling-off can be dealt with.

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