| 摘要 |
A method of reducing power consumption within a portable communication device, uses a number of spatial sensing modules to identify a spatially stationary state or to sense motion of the device, and continuously monitors the device's surroundings. The device includes a control module operatively coupled to the spatial sensing modules. The spatial sensing modules include a global positioning system, and a module configured to identify the location of the device through a cellular wireless communication network through which the device communicates. The method uses the control module to switch on or switch off, in a selective manner, one or more of the spatial sensing modules, in a hierarchical manner, based on identifying that the device has been in a spatially static state for some temporal 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, to reduce power consumption, until the time the device is identified to move from the indoor location, to an outdoor location. |
