US 12,451,036 B2
Laser projection apparatus, projection display system, and projection display method
Qian Liang, Shandong (CN); Dabo Guo, Shandong (CN); Jichen Xiao, Shandong (CN); Lingyue Cui, Shandong (CN); Chao Wu, Shandong (CN); and Kai Wu, Shandong (CN)
Assigned to HISENSE LASER DISPLAY CO., LTD, Qingdao (CN)
Filed by HISENSE LASER DISPLAY CO., LTD, Shandong (CN)
Filed on Mar. 27, 2024, as Appl. No. 18/618,438.
Application 18/618,438 is a continuation of application No. PCT/CN2022/102066, filed on Jun. 28, 2022.
Claims priority of application No. 202111159111.3 (CN), filed on Sep. 30, 2021; application No. 202111161811.6 (CN), filed on Sep. 30, 2021; application No. 202111320711.3 (CN), filed on Nov. 9, 2021; and application No. 202122734014.4 (CN), filed on Nov. 9, 2021.
Prior Publication US 2024/0312377 A1, Sep. 19, 2024
Int. Cl. G09G 3/00 (2006.01); G03B 21/00 (2006.01); G03B 21/20 (2006.01); H04N 9/31 (2006.01)
CPC G09G 3/001 (2013.01) [G03B 21/008 (2013.01); G03B 21/204 (2013.01); H04N 9/3135 (2013.01); H04N 9/3161 (2013.01); H04N 9/3179 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A laser projection apparatus, comprising:
a laser source configured to provide illumination beams;
an optical modulating assembly including a digital micromirror device; the optical modulating assembly being configured to modulate the illumination beams provided by the laser source based on image signals to obtain projection beams;
a vibrating device configured to receive and output the projection beams;
a projection lens configured to receive the projection beams and project the projection beams into an image; and
a circuit architecture configured to drive at least the laser source and the optical modulating assembly to operate, wherein the circuit architecture includes:
a display driving circuit including:
an image processing sub-circuit configured to perform frame division on image data of an image to be displayed according to a preset frame division method to obtain image signals of a plurality of frames of sub-images, generate a frame division control signal based on the image signals of the plurality of frames of sub-images, and send the frame division control signal to a display driving sub-circuit; and
the display driving sub-circuit coupled to the image processing sub-circuit, the digital micromirror device, and the vibrating device and configured to receive the frame division control signal of the plurality of frames of sub-images, output the image signals of the plurality of frames of sub-images to the digital micromirror device according to an output timing of the image signals of the plurality of frames of sub-images based on the frame division control signal, and output a vibration instruction to the vibrating device based on the output timing of the image signals of the plurality of frames of sub-images, so as to control the vibrating device to perform vibrations in multiple directions, so that projection beams corresponding to different image signals of the sub-images are output through vibrations of the vibrating device in sequence.