Projection display device, display control method, and display control program

A display control method for a projection display device comprising a light modulator that spatially modulates, in accordance with image data that has been input, light emitted by a light source, and a projection optical system that projects the light that has been spatially modulated onto a projection surface of a vehicle,

• the display control method comprising:
• acquiring measurement information measured by first processor of an information measuring device mounted in the vehicle and built into the projection display device;
• performing a first display control for generating image data in accordance with information received from a control unit second processor that controls the vehicle and then inputting the image data to the light modulator, and a second display control for generating image data in accordance with the measurement information acquired directly from the information measuring device without passing through the second processor that controls the vehicle and then inputting the image data to the light modulator;
• and
• determining, in accordance with the measurement information, whether or not a warning is necessary, wherein
• the second display control is performed when the determining that the warning is necessary, and performing the first display control when determining that the warning is not necessary,
• in a first mode in which driving of the vehicle is performed in accordance with an internally generated instruction or an instruction externally and wirelessly received, performing at least the second display control without passing through the second processor.

A non-transitory computer readable medium storing a display control program for a projection display device having a light modulator that spatially modulates, in accordance with image data that has been input, light emitted by a light source, and a projection optical system that projects the light that has been spatially modulated onto a projection surface of a vehicle,

• the display control program causing a computer to execute:
• acquiring measurement information measured by a first processor of an information measuring device mounted in the vehicle and built into the projection display device;
• performing a first display control for generating image data in accordance with information received from a second processor that controls the vehicle and then inputting the image data to the light modulator, and a second display control for generating image data in accordance with the measurement information acquired directly from the information measuring device without passing through the second processor that controls the vehicle and then inputting the image data to the light modulator;
• and
• determining, in accordance with the measurement information, whether or not a warning is necessary, wherein
• the display control program causing the computer to perform the second display control when determining that the warning is necessary, and perform the first display control when determining that the warning is not necessary,
• in a first mode in which driving of the vehicle is performed in accordance with an internally generated instruction or an instruction externally and wirelessly received, the display control program causing the computer to perform at least the second display control without passing through the second processor.