Patent ID: 8947217
Filing Date: 2015-02-03
Classification: B60R,G02B

Abstract:
1. A human machine interface for an automotive vehicle comprising: an instrument cluster and at least one head-up display for displaying information to a vehicle driver; wherein said instrument cluster and said at least one head-up display comprise at least two picture generation units, each picture generation unit including: at least one laser for generating at least one laser beam that is modulated in time; a micro-electromechanical minor arranged in the optical path of said laser beam, for sweeping said laser beam over a diffuser in a two-dimensional Lissajous pattern; each picture generation unit configured to generate on said diffuser a picture resulting from the combination of the modulation of said at least one laser beam in time and said two-dimensional Lissajous pattern; and wherein said human machine interface comprises a central control unit interfaced with a vehicle's on-board computer and one or more devices on-board the vehicle for receiving information to be displayed in form of a picture, the central control unit including: a processor operatively connected with said at least two picture generation units, said processor being configured to determine pictures to be generated by said at least two picture generation units that contain said information to be displayed, and to calculate in a centralized manner, for each picture generation unit, a two-dimensional Lissajous pattern and a modulation of said at least one laser beam, the combination of which results in the respective picture to be displayed, wherein each of said at least two picture generation units comprises a mirror sensor configured to sense an actual position and vibration of said micro-electromechanical mirror, and wherein said processor is configured to take into account said actual position and vibration when calculating said Lissajous pattern and to diagnose a malfunction of said micro-electromechanical mirror.