Portable electronic device and power-saving method therefor
First Claim
1. A portable electronic device, comprising:
- a wireless communication module configured to wirelessly collect location information from at least one remote station;
a processing unit configured to execute a positioning application, and calculate a position of the portable electronic device based on the collected location information when the positioning application is executed;
a display device configured to operate at a bright mode or a dim mode, wherein the display device operates at the bright mode when the calculated position indicates that the portable electronic device is kept being moved; and
a backlight driver coupled to the processing unit, wherein the processing unit is further configured to control the backlight driver to make the display device leave the bright mode and enter the dim mode when the calculated position indicates that the portable electronic device is not moved for a first predetermined time period,wherein when the positioning application is ended and the portable electronic device is kept idle for a second predetermined time period, the processing unit further controls the backlight driver to make the display device switch from the bright mode to the dim mode.
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Accused Products
Abstract
A portable electronic device includes a wireless communication module, a processing unit, a display device and a backlight driver. The wireless communication module wirelessly collects location information from at least one remote station. The processing unit executes a positioning application and thereby calculates a position of the portable electronic device based on the collected location information. The display device operates at a bright mode when the calculated position indicates that the portable electronic device is kept being moved. The backlight driver is coupled to the processing unit, and, the processing unit is further configured to control the backlight driver to make the display device leave the bright mode and enter a dim mode when the calculated position indicates that the portable electronic device is not moved for a first predetermined time period.
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Citations
19 Claims
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1. A portable electronic device, comprising:
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a wireless communication module configured to wirelessly collect location information from at least one remote station; a processing unit configured to execute a positioning application, and calculate a position of the portable electronic device based on the collected location information when the positioning application is executed; a display device configured to operate at a bright mode or a dim mode, wherein the display device operates at the bright mode when the calculated position indicates that the portable electronic device is kept being moved; and a backlight driver coupled to the processing unit, wherein the processing unit is further configured to control the backlight driver to make the display device leave the bright mode and enter the dim mode when the calculated position indicates that the portable electronic device is not moved for a first predetermined time period, wherein when the positioning application is ended and the portable electronic device is kept idle for a second predetermined time period, the processing unit further controls the backlight driver to make the display device switch from the bright mode to the dim mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power-saving method for a portable electronic device, which has a display device, the method comprising:
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wirelessly collecting location information from at least one remote station; executing a positioning application; calculating a position of the portable electronic device based on the collected location information when the positioning application is executed; making the display device operate at a bright mode when the calculated position indicates that the portable electronic device is kept being moved; making the display device leave the bright mode and enter a dim mode when the calculated position indicates that the portable electronic device is not moved for a first predetermined time period; and making the display device switch from the bright mode to the dim mode when the positioning application is ended and the portable electronic device is kept idle for a second predetermined time period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification