Method for controlling back light by using clock function in por

Details Method for controlling back light by using clock function in por Method for controlling back light by using clock function in por

1997-12-23

2000-12-05

Vo, Nguyen

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455569, 345102, H04B 138, G09G 336

Patent

active

061578495

ABSTRACT:
A method for reducing power consumption in a portable radio communication terminal by selectively preventing back light operation using daylight hours. The portable radio communication terminal checks whether current time of the timer is within a predetermined period of daytime. If the current time is within the period of daytime, the portable radio communication terminal is set to a back light-off mode. In this condition, if key data is received, the portable radio communication terminal manages the key data without turning on the back light. Therefore, it is possible not only to extend an operating time of the battery but also to prevent an increase of the temperature due to the heat radiation of the portable radio communication terminal.

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