US Patent 9618344 Digital map tracking apparatus and methods

In an embodiment, an apparatus may include a circuit that has a first input to receive motion data from at least one of a motion sensor and an optical sensor and that has a second input to receive directional data corresponding to the motion data. The circuit may further include an input/output interface configured to provide data to a display and a control circuit coupled to the first input, the second input, and the input/output interface. The control circuit may be configured to determine a current position based at least in part on the motion data and the directional data and update an indicator on a digital map based on the current position determined from the motion data.