Projection-type display device and method for adjusting a projected image

1. A projection-type display device that allows adjustment of a projected image, comprising:

an operation signal detector, configured to receive an operation signal that indicates adjustment content of said projected image that was instructed by way of an operation unit;

an installation state detector, configured to detect, as an installation state of said projection-type display device, a first state and a second state that is rotated 90 degrees from said first state around an axis that is parallel to an optical axis of a projection lens; and

a controller that, upon detecting a signal that corresponds to a first direction by way of said operation signal detector in said first state and said second state, adjusts said projected image by causing said projected image to shift in said first direction, or adjusts said projected image by causing a correction-object site in said projected image to move in said first direction, wherein:

said controller, when said projection-type display device is changed from said first state to said second state, exchanges a breadth of an adjustment range which is instructed by way of said operation unit in left-right directions of said projected image and a breadth of an adjustment range which is instructed by way of said operation unit in up-down directions of said projected image.

2. The projection-type display device according to claim 1 , wherein:

said second state includes:

a 90-degree state in which said projection-type display device of said first state is rotated 90 degrees to the right around an axis that is parallel to the optical axis of said projection lens; and

a 270-degree state in which said projection-type display device of said first state is rotated 90 degrees to the left around an axis that is parallel to the optical axis of said projection lens; and

said controller:

in the 90-degree state, reverses a sign of a value of the adjustment range in the up-down directions of said projected image; and

in said 270-degree state, reverses a sign of a value of the adjustment range in the left-right directions of said projected image.

3. The projection-type display device according to claim 1 , wherein:

said controller, when said installation state of said projection-type display device is changed from said first state to said second state, exchanges an adjustment value which is instructed by way of said operation unit in the left-right directions of said projected image and an adjustment value which is instructed by way of said operation unit in the up-down directions of said projected image.

4. The projection-type display device according to claim 2 , wherein:

said controller:

when said installation state of said projection-type display device is changed from said first state to said second state, exchanges the adjustment value which is instructed by way of said operation unit in the left-right directions of said projected image and the adjustment value which is instructed by way of said operation unit in the up-down directions of said projected image;

in said 90-degree state, reverses the signs of the adjustment value and the value of the adjustment range in the up-down directions of said projected image; and

in said 270-degree state, reverses the signs of the values of the adjustment value and the value of the adjustment range in the left-right directions of said projected image.

5. The projection-type display device according to claim 1 , wherein the breadth of the adjustment range in the left-right directions of said projected image differs from the breadth of the adjustment range in the up-down directions of said projected image.

6. The projection-type display device according to claim 1 , wherein said controller causes an image that indicates an adjustment value and the adjustment range to be displayed together with said projected image.

7. The projection-type display device according to claim 1 , wherein said first direction is any one direction from among the up, down, left, and right directions.

8. The projection-type display device according to claim 1 , wherein in said first state, short sides of a display element are parallel to a vertical direction.

9. The projection-type display device according to claim 1 , wherein in said first state, short sides of said projected image are parallel to a vertical direction.

10. A projection-type display device that allows adjustment of a projected image, comprising:

a processor; and

a memory coupled to the processor, the memory storing instructions to cause the processor to perform:

receiving, by an operation signal detector, an operation signal that indicates adjustment content of said projected image that was instructed;

detecting, by an installation state detector, as an installation state of said projection-type display device, a first state and a second state that is rotated 90 degrees from said first state around an axis that is parallel to an optical axis of a projection lens; and

adjusting, by a controller, upon detecting a signal that corresponds to a first direction by way of said operation signal detector in said first state and said second state, said projected image by causing said projected image to shift in said first direction, or adjusting said projected image by causing a correction-object site in said projected image to move in said first direction, wherein:

said controller, when said projection-type display device is changed from said first state to said second state, exchanges a breadth of an adjustment range which is instructed in left-right directions of said projected image and a breadth of an adjustment range which is instructed in up-down directions of said projected image.

11. A projection-type display device that allows adjustment of a projected image, comprising:

a processor; and

a memory coupled to the processor, the memory storing instructions to cause the processor to execute:

receiving an operation signal that indicates adjustment content of said projected image that was instructed;

detecting, as an installation state of said projection-type display device, a first state and a second state that is rotated 90 degrees from said first state around an axis that is parallel to an optical axis of a projection lens;

upon detecting a signal that corresponds to a first direction in said first state and said second state, adjusting said projected image by causing said projected image to shift in said first direction, or adjusting said projected image by causing a correction-object site in said projected image to move in said first direction; and

when said projection-type display device is changed from said first state to said second state, exchanging a breadth of an adjustment range which is instructed in left-right directions of said projected image and a breadth of an adjustment range which is instructed in up-down directions of said projected image.