Canon Kabushiki Kaisha

Masaya Yagi

Toru Koike

Tetsuji Saito

Takashi Asaka

A projection apparatus according to the present invention, includes: a field programmable gate array (FPGA) configured to control projection; and at least one processor which functions as: a configuration unit configured to configure a circuit to be included in the FPGA to a circuit corresponding to a state of the projection apparatus.

Projection apparatus and control method thereof

A video processing device includes a connecting unit that is connected to an external apparatus via an interface including a HPD line and a DDC line, a memory that stores EDID, with the EDID being transmitted via the DDC line; and a control unit that performs a predetermined process for resetting a state of the HPD line if a predetermined error relating to a transmission of EDID is detected. The control unit changes a state of the video processing device to a power off state if a number of times that the predetermined process is performed is not less than a predetermined value.

Circuit and method of control of DDC data transmission for video display device

A projection apparatus that provides flicker reduction according to the cause of flicker, to thereby properly reduce flicker without unnecessarily bringing about characteristic degradation is disclosed. Light for projecting a projection image onto a projection surface is output from a light source, and separated into light beams of a plurality of colors. Images corresponding to the light beams of the plurality of colors are formed on display units. The light beams of the plurality of colors having passed through the display units are synthesized and projected onto the projection surface. Fluctuations in the light quantity of the light beams of the plurality of colors having passed through the display units and yet to be input to the color synthesis unit are detected. Detection results are analyzed, and it is determined whether flicker caused by the display units or flicker caused by the light source is occurring in the projection image.

Growing community of inventors

Yokohama, Japan

Masaya Yagi