E-book and power controller and power controlling method thereof
AssigneeE Ink Holdings Inc.
InventorsKai-Cheng Chuang, Tzu-Ming Wang
Life of this patent
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Abstract
An e-book under an external light having an intensity is provided. The e-book includes a memory module storing data; an input/output interface electrically connected to the memory module, inputting the data to the memory module, and outputting the data from the memory module; an e-paper module electrically connected to the memory module, and displaying the data; a power device electrically connected to the e-paper module and the memory module, and providing a power output; and a photosensor electrically connected to the power device, having a threshold value, and sensing the intensity of the external light, wherein when the sensed intensity is lower than the threshold value, the power device reduces the power output.
Claims11
An e-book under an external light having an intensity, comprising:
- a memory module storing data;
- an input/output interface electrically connected to the memory module, inputting the data to the memory module, and outputting the data from the memory module;
- an e-paper module electrically connected to the memory module, and displaying the data;
- a power device electrically connected to the e-paper module and the memory module, and providing a power output;
- and
- a photosensor electrically connected to the power device, having a threshold value, and sensing the intensity of the external light, wherein when the sensed intensity is lower than the threshold value, the power device reduces the power output.
A power control method for an e-book having a power device, comprising steps of
- providing a photosensor having a threshold value;
- electrically connecting the photosensor to the power device;
- sensing an intensity of an external light by the photosensor;
- and
- reducing a power output of the power device when the sensed intensity is lower than the threshold value.
A power control method for an e-book having a power device, comprising steps of:
- providing a gravity sensor to sense a gravity direction;
- electrically connecting the gravity sensor to the power device;
- and
- performing one of turning off a power output of the power device and enabling the e-book to enter an energy-saving mode when the gravity direction and a display direction of the e-book are pointed at a same direction.
A power controller for controlling a power output of an e-book under an external environment, comprising:
- an environmental sensor sensing the external environment, wherein when the external environment is changed, the power controller reduces the power output of the e-book.
Dependencies are inferred from the claim text.