Abstract: There is provided a projector including a display section that displays a first image according to the video signal outputted from the output apparatus on a projection surface, a connection section that couples an external apparatus to the projector, a storage that stores at least setting information representing a setting on display of the first image, an operation accepting section that accepts operation of updating the setting information, and a controller. The controller operates in one of a normal action mode and an external control mode. In the external control mode, the controller transmits the setting information to the external apparatus, and when operation is performed on the operation accepting section, the controller transmits operation information representing the operation to the external apparatus.

Abstract: A projector comprises a projection unit, an image pickup unit, a control unit, and a correction unit. The projection unit is configured to project a video based on a video signal. The image pickup unit is configured to pick up an image of a projection video projected by the projection unit and output the picked-up image. The control unit is configured to determine a projection video projected by the other projector based on the picked-up image received from the image pickup unit. The correction unit is configured to carry out correction of the video signal so that the projection video projected by the projection unit is aligned with the projection video projected by the other projector.

Abstract: A projector comprises a projection unit, an image pickup unit, a control unit, and a correction unit. The projection unit is configured to project a video based on a video signal. The image pickup unit is configured to pick up an image of a projection video projected by the projection unit and output the picked-up image. The control unit is configured to determine a projection video projected by the other projector based on the picked-up image received from the image pickup unit. The correction unit is configured to carry out correction of the video signal so that the projection video projected by the projection unit is aligned with the projection video projected by the other projector.

Abstract: In at least one embodiment, a projector comprises a projection unit configured to project a video based on a video signal. An image pickup unit is configured to pick up an image of a projection video projected by the projection unit and output the picked-up image. A control unit is configured to determine a projection video projected by an other projector based on the picked-up image received from the image pickup unit. A keystone correction unit is configured to carry out keystone correction of the video signal so that the projection video projected by the projection unit is aligned with the projection video projected by the other projector.

Abstract: A image pickup unit picks up an image of a video projected by a projection unit and outputs the picked-up image. A control unit determines whether the picked-up image includes a projection video other than the video projected by the projection unit or not. If the control unit determines that the picked-up image includes a projection video other than the video projected by the projection unit, the control unit instructs a keystone correction unit to carry out keystone correction of the video signal in accordance with the picked-up image. The keystone correction unit carries out keystone correction of the input video signal or the output video signal so that an edge of the video projected by the projection unit contacts an edge of the projection video other than the video projected by the projection unit.

Abstract: A image pickup unit picks up an image of a video projected by a projection unit and outputs the picked-up image. A control unit determines whether the picked-up image includes a projection video other than the video projected by the projection unit or not. If the control unit determines that the picked-up image includes a projection video other than the video projected by the projection unit, the control unit instructs a keystone correction unit to carry out keystone correction of the video signal in accordance with the picked-up image. The keystone correction unit carries out keystone correction of the input video signal or the output video signal so that an edge of the video projected by the projection unit contacts an edge of the projection video other than the video projected by the projection unit.

Abstract: A image pickup unit picks up an image of a video projected by a projection unit and outputs the picked-up image. A control unit determines whether the picked-up image includes a projection video other than the video projected by the projection unit or not. If the control unit determines that the picked-up image includes a projection video other than the video projected by the projection unit, the control unit instructs a keystone correction unit to carry out keystone correction of the video signal in accordance with the picked-up image. The keystone correction unit carries out keystone correction of the input video signal or the output video signal so that an edge of the video projected by the projection unit contacts an edge of the projection video other than the video projected by the projection unit.

Abstract: In a high luminance area having a target luminance L of not lower than a preset reference luminance L0, the light emitting element driver of the invention adopts a direct current drive mode and enables the function of a constant current driving circuit to drive an LED or light emitting diode. In a low luminance area having the target luminance L of lower than the preset reference luminance L0, on the other hand, the light emitting element driver adopts a pulse width modulation drive mode and enables the function of a pulse width modulation driving circuit to drive the LED. This control procedure enables the luminance adjustment by the pulse width modulation drive control in the low luminance area, while ensuring the high power efficiency by the direct current drive control in the high luminance area. The advantage of this arrangement simultaneously satisfies both the luminance adjustment in a wide range including the low luminance area and the high power efficiency.