| 20080262720 | DRIVING RECORDER - A driving recorder is installed on a vehicle and has a processor, a register, a gravity sensing unit, a magnetic field positioning unit, a camera and a storage unit. The gravity sensing unit is electronically connected to the processor and uses gravity as a reference for detecting a movement of the vehicle to allow the processor to calculate a motion and orientation of the vehicle and determine whether the vehicle is colliding. The magnetic field positioning unit is electronically connected to the processor and detects a position of the magnetic field positioning unit by measuring the Earth's magnetic field so the processor calculate a location of the vehicle. Therefore, the driving recorder accurately detects motion, orientation and location of the vehicle even when the vehicle is being driven in a tunnel. | 10-23-2008 |
