Method for controlling a power supply in an external...

Details Method for controlling a power supply in an external... Method for controlling a power supply in an external...

2006-06-13

2006-06-13

Jean, Frantz B. (Department: 2151)

Electrical computers and digital processing systems: support

Computer power control

C713S323000, C324S429000, C340S539230, C455S403000

Reexamination Certificate

active

07062661

ABSTRACT:
A power management method for a PDA (personal digital assistant) which can be connected with an external communication terminal is described. Upon detecting power-on of the external communication terminal, the PDA detects a battery voltage of the PDA and compares the battery voltage with a reference voltage which is slightly higher than an inoperable voltage of the PDA. If the battery voltage is lower than the reference voltage, the PDA generates a low-voltage alarm message. Otherwise, if the battery voltage is higher than the reference voltage, the PDA supplies electric power to the external communication terminal.

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