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    • 8. 发明公开
    • LASER POINTER
    • EP3518222A1
    • 2019-07-31
    • EP18154213.5
    • 2018-01-30
    • Swatek, Alexander
    • Swatek, Alexander
    • G09G3/02
    • The invention relates to a laser pointer (1) for continuously drawing arbitrary shapes on a surface, comprising:
      a MEMS mirror (14) configured to deflect an emitted laser beam (3, 8, 12), wherein the deflection angle (Φ) of the MEMS mirror (14) can be altered by means of applying a set of drive values (DV) to the MEMS mirror (14);
      an orientation measurement unit (18) configured to continuously determine a current orientation (θ i ) and to output said current orientation (θ i ) at an output (20);
      a memory (19) being configured to store current orientations (θ i ) received from the orientation measurement unit (18) as a set (S, S', S") of orientation samples (22); and
      a drive circuit (25) configured to generate said set of drive values (DV) by subtracting the current orientation (θ i ) from the set (S, S', S") of orientation samples (22) and to apply said set of drive values (DV) to the MEMS mirror (14).
    • 9. 发明公开
    • VIDEO DISPLAY DEVICE
    • EP3484147A1
    • 2019-05-15
    • EP17824247.5
    • 2017-07-04
    • Hitachi-LG Data Storage, Inc.
    • UKAI, RyujiSEO, YoshihoOGI, Yuya
    • H04N5/74G03B21/00G09G3/02
    • Provided is a video display device that can be miniaturized and can gradually change brightness of each gradation value of a video. The video display device includes a laser light source unit that changes an amount of emitted light depending on a drive current, a video processing unit that outputs a video gradation signal, a current gain signal, and a current offset signal, a laser driver that outputs the drive current based on the video gradation signal, the power supply gain signal, and the current offset signal, and a dimming level processing unit that divides a dimming level for designating brightness of a video into a plurality of dimming modes and divides the dimming level into in-mode levels within the divided dimming modes, wherein the video processing unit includes a video gradation value output unit that outputs the video gradation signal obtained by scaling and offsetting a gradation value of the video based on the dimming mode and the in-mode level, a current gain output unit that outputs the current gain signal depending on the dimming mode, and a current offset output unit that outputs the current offset signal depending on the dimming mode.