Zhao-dong Zhang

3 Patents

• US120286572024

  Projection Device and Keystone Correction Method Thereof

  Ali Corporation

  0 cites
• US118771032024

  Projection Device and Projection Picture Correction Method Thereof

  Ali Corporation

  0 cites
• US116529672023

  Projection Device and Projection Image Correction Method Thereof

  Ali Corporation

  0 cites