Projector and projector control method

A projector which projects an image onto a projection surface, and displays it thereon, comprising:

• a light source;
• a light modulator which modulates light from the light source into an image light representing the image;
• a projection optical system which includes an autofocus section for automatically adjusting a focus in such a way that the image light modulated by the light modulator is imaged on the projection surface;
• a detection section which detects a stop of a movement of the projector;
• and
• a control section which, on the stop of the movement of the projector being detected in the detection section, causes the autofocus section to start the adjustment of the focus, wherein
• the detection section includes an angular velocity sensor which detects an angular velocity of the projector and the detection section detects the stop of the movement of the projector in the event that a predetermined time has elapsed in a condition in which the angular velocity detected by the angular velocity sensor, after exceeding a first value set in advance, becomes lower than a second value which is lower than the first value, and maintains a value lower than the second value.

A projector which projects an image onto a projection surface, and displays it thereon, comprising:

• a light source;
• a light modulator which modulates light from the light source into an image light representing the image;
• a projection optical system which includes an autofocus section for automatically adjusting a focus in such a way that the image light modulated by the light modulator is imaged on the projection surface;
• a keystone distortion correction section which carries out a keystone distortion correction process for correcting a keystone distortion of the image projected onto the projection surface;
• a detection section which detects a stop of a movement of the projector;
• and
• a control section which, on the stop of the movement of the projector being detected in the detection section, as well as causing the keystone distortion correction section to start the keystone distortion correction process in accordance with a relative positional relationship between the projector after being moved and the projection surface, causes the autofocus section to start the adjustment of the focus, wherein
• the detection section includes an angular velocity sensor which detects an angular velocity of the projector and the detection section detects the stop of the movement of the projector in the event that a predetermined time has elapsed in a condition in which the angular velocity detected by the angular velocity sensor, after exceeding a first value set in advance, becomes lower than a second value which is lower than the first value, and maintains a value lower than the second value.