Patent ID: 8674646
Filing Date: 2014-03-18
Classification: B60K,G02B

Abstract:
1. A vehicle display system comprising: a mirror for reflecting an image of a display device so as to display the image on a windshield of a vehicle; a step motor having a rotor provided with permanent magnets, the step motor changing a reflecting angle of the mirror when the rotor is rotated; a motor control unit for driving the step motor in a micro-step driving manner, wherein a step angle of the step motor is divided into multiple micro step angles so that the rotor of the step motor is rotated by each micro step angle; and a display position adjusting switch, wherein a display position of the image on the windshield is adjusted when the display position adjusting switch is turned on, wherein the step motor as well as the motor control unit is connected to a battery of the vehicle, so that electrical power is continuously supplied to the step motor and the motor control unit, and wherein the motor control unit continuously drives the step motor until the rotor of the step motor reaches a next excitation stable point, in a case that the display position adjusting switch or an ignition switch is turned off when the rotor of the step motor is on a way to the next excitation stable point.