Patent ID: 8311757
Filing Date: 2012-11-13
Classification: F41G,G01C

Abstract:
1. A self-calibration electric pointing device, comprising: a sensors/actuator assembly wherein further comprises: a 2-axis DTG (Dynamically Tuned Gyro) for sensing the earth rate and said device angular motion; a first accelerometer; a second accelerometer with said first accelerometer for sensing gravity; and an indexing device carrying said 2-axis DTG, said first accelerometer, and said second accelerometer for real-time multiple position sensor calibration, wherein said indexing device moves said 2-axis DTG, said first accelerometer, and said second accelerometer when said system is starting or during said system operation for sensor calibration, wherein said sensor calibration is a two-position calibration that said indexing device only needs to stop at two points from an original point to a stop point to complete said sensor calibration; a sensor interface circuits; and a computation platform electrically connected with said sensors/actuator assembly by said sensor interface circuits for processing measurement from said sensors/actuator assembly for pointing.