Patent ID: 8504858
Filing Date: 2013-08-06
Classification: G06F,Y02D

Abstract:
1. A wireless input device with a power saving system comprising: a sensor having a sensor array configured to capture an image data of a surface; a rest mode switch configured to set the input device to various levels of rest modes when the input device is at rest, wherein the various levels of rest modes comprise a light rest mode and a deep rest mode; a control logic coupled to the rest mode switch and the sensor, wherein the control logic is configured to set the input device to process a predetermined portion of the image data on the sensor array during a wake up detection operation when the input device is in the light rest mode, and configured to set the input device to process a smaller portion of the image data for monitoring movement on the wireless input device when the input device is in the deep rest mode, wherein the smaller portion of the image data is smaller than the predetermined portion of the image data; and a current controller coupled to the control logic and the sensor, the current controller configured to control a current supply limited to a section of the sensor array containing the predetermined portion of the image data that is being processed by the input device during the wake up detection operation.