Synchronization of navigation and image information for handheld scanner

摘要

A computer peripheral that operates either as a computer mouse or as a scanner. The peripheral includes navigation sensors that generate information on motion of the device and an image array that captures successive image frames of an object being scanned. In a mouse mode, the peripheral periodically transfers readings from the navigation sensors to a computing device so that the computing device can track a position of the device. In a scanner mode, in addition to obtaining navigation information from the navigation sensors, the peripheral also captures image frames as it is moved across the object. Operation of the navigation sensors and image array may be synchronized such that an association between the image data and the navigation information may be generated and maintained as image frames are transferred to the computing device, even if some of the frames are dropped in transmission between the scanner-mouse and a computer.