Abstract: In a hydraulic control device, when it is detected that a pressure of first oil (output pressure) detected by an output pressure sensor pulsates, a transmission control unit as a TCU stops driving of a second pump or decreases a rotation number of the second pump as a first operation. Alternatively, when it is detected that the output pressure pulsates, the TCU increases the rotation number of the second pump to a rotation number (for example, maximum rotation number) that is higher than a target rotation number as a second operation.

Abstract: In a hydraulic control device, when it is detected that a pressure of first oil (output pressure) detected by an output pressure sensor pulsates, a transmission control unit as a TCU stops driving of a second pump or decreases a rotation number of the second pump as a first operation. Alternatively, when it is detected that the output pressure pulsates, the TCU increases the rotation number of the second pump to a rotation number (for example, maximum rotation number) that is higher than a target rotation number as a second operation.

Abstract: In a gear pump in which a driving rotor that is driven by a driving source meshes with a driven rotor that is driven by the driving rotor for rotation to pump a hydraulic oil, only one of the driving rotor and the driven rotor is given the steam treatment while the other remains untreated.

Abstract: In a gear pump in which a driving rotor that is driven by a driving source meshes with a driven rotor that is driven by the driving rotor for rotation to pump a hydraulic oil, only one of the driving rotor and the driven rotor is given the steam treatment while the other remains untreated.

Abstract: Disclosed is a projection type image display apparatus including a projection section to output a projection light in which an image is attached through a projector lens and a photographing section to photograph a projected image projected by the projection section through a photographing lens, and the projected image which is projected on a screen by the projection section is obtained by the photographing section and a focus of the projected image is adjusted based on a photographing result of the image obtained by the photographing section, and the projector lens and the photographing lens are movable in a direction to change the focus of the projected image or a focus of the photographed image by a same drive section.

Abstract: Disclosed is a projection type image display apparatus including a projection section to output a projection light in which an image is attached through a projector lens and a photographing section to photograph a projected image projected by the projection section through a photographing lens, and the projected image which is projected on a screen by the projection section is obtained by the photographing section and a focus of the projected image is adjusted based on a photographing result of the image obtained by the photographing section, and the projector lens and the photographing lens are movable in a direction to change the focus of the projected image or a focus of the photographed image by a same drive section.

Abstract: Disclosed is a projection type video display apparatus including: a projection section to generate projection light of a video to output through a projection lens; an imaging section to image through a camera lens in a direction in which a video is projected; an XY driving section to change a projection direction of a video projected by the projection section; and a control section to perform a position adjustment processing of the projected video relative to a screen, wherein in the position adjustment processing, the control section allows the imaging section to image in the projection direction and when a plurality of pre-set marks are in an imaged image, the control section allows the XY driving section to drive so that a center point shown by the plurality of marks and a center point of the projected video overlap.

Abstract: Disclosed is a projection type image display apparatus including a projection section, a photographing section, a zoom changing section, a projection position changing section and a control section, and when an image is projected on the screen which includes a projection region of a predetermined size and which has a first mark image at a portion of the projection region, the control section controls the projection section so as to project an image which includes a second mark image matching with the first mark image when the projected image is displayed by being matched with the projection region, the control section controls the photographing section so as to photograph the first mark image and the second mark image which is in the projected image, and the control section adjusts the size and the projection position of the projected image based on the first mark image and the second mark image.

Abstract: Disclosed is a projection type video display apparatus including: a video projection section to generate projection light of a video to output through a projection lens; an imaging section to capture through a camera lens the video projected by the video projection section; a moving section to move the projection lens in a direction of changing focus of the video; and a control section to adjust the focus of the projected video, wherein the control section allows the video projection section to project a pre-set mark image and the imaging section to capture the projected video of the mark image to allow the moving section to operate so that the captured mark image is in focus, and thus adjusts the focus of the projected video.