Abstract: A display device is in a multi-monitor system in which a plurality of display devices are connected using a daisy chain to display an image signal. The display device may include, but is not limited to, a reception unit configured to receive signal information that is information regarding a display of the image signal on a display device from the display device connected to an own display device; a comparison unit configured to compare the received signal information and signal information of the image signal in the own display device; and an output unit configured to output an instruction to perform a reset on at least one of the plurality of display devices when the two types of signal information are determined to be different as a result of the comparison.

Abstract: A video device includes: a first video signal terminal to which a video signal cable for transmitting a video signal is detachably connected; a second video signal terminal which is of the same shape as that of the first video signal terminal, and to which the video signal cable is detachably connected; a detection unit which detects a predetermined state in the first video signal terminal and the second video signal terminal; a first video signal switch which connects the first video signal terminal to either an input unit or an output unit; a second video signal switch which connects the second video signal terminal to either the input unit or the output unit; and a control unit which controls a connection state of the first video signal switch and a connection state of the second video signal switch according to a detection result of the detection unit.

Abstract: A display device is in a multi-monitor system in which a plurality of display devices are connected using a daisy chain to display an image signal. The display device may include, but is not limited to, a reception unit configured to receive signal information that is information regarding a display of the image signal on a display device from the display device connected to an own display device; a comparison unit configured to compare the received signal information and signal information of the image signal in the own display device; and an output unit configured to output an instruction to perform a reset on at least one of the plurality of display devices when the two types of signal information are determined to be different as a result of the comparison.

Abstract: A video device includes: a first video signal terminal to which a video signal cable for transmitting a video signal is detachably connected; a second video signal terminal which is of the same shape as that of the first video signal terminal, and to which the video signal cable is detachably connected; a detection unit which detects a predetermined state in the first video signal terminal and the second video signal terminal; a first video signal switch which connects the first video signal terminal to either an input unit or an output unit; a second video signal switch which connects the second video signal terminal to either the input unit or the output unit; and a control unit which controls a connection state of the first video signal switch and a connection state of the second video signal switch according to a detection result of the detection unit.

Abstract: An apparatus includes a lamp a power supply for supplying power to lamp, an image processing unit for displaying an image according to any one of a plurality of video signals applied externally, and a control unit for causing the power supply to start supplying power to the lamp when at least one of the plurality of video signals is applied in an initial state, checking whether or not any one of the plurality of video signals is applied within a predetermined period of time from the time when the applied video signal is stopped, making the power supply continue to supply power to the lamp if at least one of the plurality of video signals is applied, and making the power supply stop supplying power to the lamp if any one of the plurality of video signals has not been applied.

Abstract: An apparatus includes a lamp, a power supply for supplying power to lamp, an image processing unit for displaying an image according to any one of a plurality of video signals applied externally, and a control unit for causing the power supply to start supplying power to the lamp when at least one of the plurality of video signals is applied in an initial state, checking whether or not any one of the plurality of video signals is applied within a predetermined period of time from the time when the applied video signal is stopped, making the power supply continue to supply power to the lamp if at least one of the plurality of video signals is applied, and making the power supply stop supplying power to the lamp if any one of the plurality of video signals has not been applied.

Abstract: An auxiliary line created on a computer is displayed on a user interface screen, and is projected onto a curved screen by a projector. The user adjusts real numbers substituted into variables of an approximate expression held in the computer for drawing auxiliary line to transform the auxiliary line drawn on the user interface screen for a correction such that the auxiliary line in the image projected from the projector through a video cable approaches to a straight line. If this correction causes the auxiliary line to extend beyond the screen of a display, the computer scales down the current user interface screen, and creates a virtual correction area therearound, so that the auxiliary line can be fully displayed within the screen.

Abstract: A computer calculates the shape of a figure after transformation using an approximate expression previously set for correcting a projected image for distortion associated with the shape of a projection surface of a cylindrical screen (an equation representative of a parabola in this case), a variable for horizontal transformation and a variable for vertical transformation which are entered through a user interface for transforming the approximate expression, and/or a variety of parameters required for transformation of image and optical corrections such as the optical center, linearity, amplitude, and position. A projector scales up or down pixels to produce a transformed image from the calculated figure after transformation for projection onto the cylindrical screen.

Abstract: A system for correcting an optical center is provided with: a lens control unit for shifting a lens in vertical and horizontal directions; an offset detection unit for detecting a displacement of the optical center with respect to a screen on a basis of a magnitude of a shift of the lens effected by the lens control unit; a memory unit for storing in advance data on the centrally aligned location of the lens and also data on the positions of the optical center effected by lens shifts; and a correction unit for linking the displacement of the optical center detected by the offset detection unit with the data on the centrally aligned location of the lens and the data on the position of the optical center effected by the lens shift stored in the memory unit to correct the displacement of the optical center.

Abstract: An image sensor is installed in the vicinity of a projection lens. The image sensor images a projected and displayed image and a screen. A projection display area and a screen area are detected from the image imaged by the image sensor. An inputted image data is corrected so that the projection display area matches the screen area. The image to be displayed is automatically displayed in a shape, which matches a display surface of the screen.

Abstract: A computer calculates the shape of a figure after transformation using an approximate expression previously set for correcting a projected image for distortion associated with the shape of a projection surface of a cylindrical screen (an equation representative of a parabola in this case), a variable for horizontal transformation and a variable for vertical transformation which are entered through a user interface for transforming the approximate expression, and/or a variety of parameters required for transformation of image and optical corrections such as the optical center, linearity, amplitude, and position. A projector scales up or down pixels to produce a transformed image from the calculated figure after transformation for projection onto the cylindrical screen.

Abstract: An auxiliary line created on a computer is displayed on a user interface screen, and is projected onto a curved screen by a projector. The user adjusts real numbers substituted into variables of an approximate expression held in the computer for drawing auxiliary line to transform the auxiliary line drawn on the user interface screen for a correction such that the auxiliary line in the image projected from the projector through a video cable approaches to a straight line. If this correction causes the auxiliary line to extend beyond the screen of a display, the computer scales down the current user interface screen, and creates a virtual correction area therearound, so that the auxiliary line can be fully displayed within the screen.

Abstract: An image sensor is installed in the vicinity of a projection lens. The image sensor images a projected and displayed image and a screen. A projection display area and a screen area are detected from the image imaged by the image sensor. An inputted image data is corrected so that the projection display area matches the screen area. The image to be displayed is automatically displayed in a shape, which matches a display surface of the screen.