| 摘要 |
A method of reducing power consumption within a portable communication device uses spatial sensing modules to identify a stationary state or to sense motion of the device, and continuously monitors the device's surroundings. The device includes a control module coupled to the spatial sensing modules, which include a global positioning system, and a module that identifies the location of the device through a cellular wireless communication network. The method uses the control module to switch on or switch off the spatial sensing modules based on identifying that the device has been in a spatially static state for a time period or has been suddenly moved, or if any sudden changes have been detected in the device's surroundings. Furthermore, if the device is identified to be at an indoor location for a specific period of time, the control module switches off the global positioning system of the device.
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