Abstract: An image display apparatus includes: a transparent board that transmits visible light; a screen that is provided on one surface of the transparent board; a projector that projects an image toward the screen from the other surface side of the transparent board; and a support unit that supports the transparent board from the other surface side. The projector is disposed outside of the space that is enclosed by the transparent board and the support unit.

Abstract: A projection-type display which projects and displays images in accordance with an image signal includes a light source for projecting the images, output means that is equipped with a coil and switch, that uses electromagnetic induction of the coil to supply a current, and that changes the magnitude of the current by means of the switch, a cooling fan that cools the projection-type display device and for which the rotational speed is variable; and control means that, upon receiving an instruction to set a first mode in which a first current is intermittently supplied to the light source.

Abstract: A projector includes a DMD that forms an image, a projection lens that projects the image formed by the DMD on a projected surface, and a display control unit that controls an image forming operation of the DMD. The display control unit forms a frame image by sequentially forming a plurality of images using a combined pixel which is configured of a plurality of pixels, and with respect to temporally continuous two images, the display control unit forms one image at a position that is shifted by a distance that corresponds to the pixel pitch of the DMD in a predetermined direction relative to the other image.

Abstract: A structure for cooling a semiconductor element includes an element body and a lead terminal extending from one surface of the element body in a direction intersecting the one surface. The semiconductor element cooling structure includes a heat sink. The heat sink includes a contact surface that is in contact with the one surface of the element body, a through-hole which is formed in the contact surface and through which the lead terminal passes, and a space portion that communicates with the through-hole and that is configured to house a substrate connected to the lead terminal.

Abstract: A light source device includes: a light source for emitting excitation light; a first optical system for condensing excitation light emitted from the light source into a rectangular shape; a fluorescent wheel having a plurality of light emitting portions emitting different color light in response to irradiation of the excitation light formed in such a manner in which each of the multiple light emitting portions is irradiated with the excitation light condensed in a rectangular shape by the first optical system; a second optical system for condensing color light emitted from each of the multiple light emitting portions in response to irradiation of the rectangularly condensed excitation light; and a rotating prism that is rotatably arranged on the optical path of the light condensed by the second light source and that shifts the optical axis of the light condensed by the second optical system as the prism turns.

Abstract: A display device includes an emission part further including a first light source emitting a first light, a second light source emitting a second light having a longer wavelength than the first light, and a fluorescent substance which is excited by the first light and the second light so as to emit a third light, and a controller configured to generate a drive value of the first light source and a drive value of the second light source based on a luminance of the first light, a luminance of the second light, a luminance of the third light, a first target luminance for the first light source, a second target luminance for the second light source, and a third target luminance for the fluorescent substance, thus controlling two light sources based on the drive values of the first and second light sources.

Abstract: A control device includes: a storage unit that stores own-device version information indicating a version of firmware that an own device has; a version information acquisition unit that imports, from a plurality of control devices, other-device version information indicating a version of firmware that each of the plurality of control devices has; and a version management unit that compares an own-device version indicated by the own-device version information stored in the storage unit with each of a plurality of other-device versions indicated by the other-device version information imported by the version information acquisition unit, when the version management unit determines according to a result of the comparison that the own-device version is older than a newest other-device version in the plurality of other-device versions, the version management unit issuing a transfer request for firmware corresponding to the newest other-device version, to a control device corresponding to the newest other-device ve

Abstract: A display device is provided with a plurality of solid-state light sources (101-103) and a coolant-circulating means (100) that is equipped with a flow path (100a) formed to pass through each of the solid-state light sources (101-103) and that circulates a coolant via the flow path (100a). Each of the solid-state light sources (101-103) has the property that the luminance thereof changes in response to a temperature change. The flow path (100a) is formed such that the coolant first passes through solid-state light sources having a greater degree of luminance change according to the above-described property of the solid-state light sources (101-103).

Abstract: A display device includes a drive control unit that changes a frequency of a drive signal based on a brightness of a light source of a backlight when a duty ratio of the drive signal is in a first range or is in a third range, the drive signal being a pulse signal for driving the light source. The drive control unit fixes the frequency of the drive signal to a predetermined frequency when the duty ratio of the drive signal is in a second range.

Abstract: A display device includes: a generating unit that generates display chromaticity based on a degradation value, a set chromaticity and device chromaticity, the display chromaticity being chromaticity of a white point to be displayed on the display device, the degradation value indicating a degree of degradation of a backlight, the set chromaticity being chromaticity of a white point based on user setting, the device chromaticity being chromaticity of a white point at which brightness becomes highest in the display device. The generating unit makes the display chromaticity approach the device chromaticity from the set chromaticity, as the degree of degradation indicated by the degradation value increases.

Abstract: An image display apparatus (and a method for dimming a light source) includes a light source and display units that spatially modulate a light from the light source on the basis of an input video signal to form an image, and performs dimming control to adjust luminance of the light source in stages. The image display apparatus includes a light source dimming unit that determines whether to perform dimming control on the basis of the input video signal, acquires a dimming rate, which is a ratio of brightness of an input image to a maximum luminance output from the light source, and sets the output of the light source to the maximum luminance output when a dimming rate of a frame immediately before a frame determined not to be subjected to dimming control is lower than a threshold.

Abstract: A method for displaying information on a screen includes modifying tone values to compress the tone of a main image; projecting by a first projector the main image with compressed tones generated with a first polarization component; modifying tone values of a sub-image for correcting tones of the sub-image; generating a correction image; and projecting by a second projector the correction image with a second polarization component different from the first polarization component over the main image projected by the first projector such that the main image is buried by an overlapped projection of the main image and the correction image generated by using the sub-image and an offset value to provide the sub-image to a viewer with a naked eye and to provide the main image to another viewer with a polarizer.

Abstract: A display device includes: a display unit that includes a display screen displaying an image, a first side extending in a long direction of the display unit, and a second side extending in a short direction of the display unit; a first presence sensor that is provided on the first side; a second presence sensor that is provided on the second side; a display screen detecting unit that detects whether the display screen of the display unit is in a vertical orientation or a horizontal orientation; and a control unit that obtains a detection result of either one of the first presence sensor and the second presence sensor in accordance with the orientation detected by the display screen detecting unit, the control unit controlling display of an image on the display unit based on the obtained detection result.

Abstract: A display device includes: a display panel that displays an image; an optical sensor which measures an irradiation amount of light emitted by a display panel as a measured optical value; a measured value revising unit which revises a revision target measured optical value using a function and outputs it as a revised measured optical value; and a signal processing unit which generates from the revised measured optical value, a control value and generates a post-processing video signal from the control value and an input video signal supplied from an external device. The function represents a change in the irradiation amount during a disabled period in which the signal processing unit disables a stabilizing function of keeping the irradiation amount of the light source of the display panel constant.

Abstract: An image display device includes: a display unit that includes a plurality of display lines; a detection unit that detects presence of an input of a predetermined position information signal; a signal output control unit that instructs whether or not to output a position information signal in accordance with a detection result by the detection unit; a signal output unit that outputs the position information signal in a case of being instructed; a display direction switching control unit that instructs switching of a vertical display direction to the display unit in accordance with the detection result; an image data input unit that receives image data including data for each display line; and an image data transmission switching unit that switches a transmission order of the data for each display line in accordance with the detection result, and transmits to the display unit the image data.

Abstract: A light source apparatus includes: a phosphor wheel that is provided with a plurality of ring-shaped light-emitting regions that are arranged concentrically and that respectively generate illumination light beams of a plurality of colors when irradiated by excitation light; a light source unit that simultaneously radiates the excitation light to the ring-shaped light-emitting regions; and a plurality of optical elements that are irradiated by the plurality of illumination light beams that are generated due to the irradiation of the excitation light.

Abstract: There are provided n (n is an integer greater than or equal to 2) physical layer control units which communicate with another apparatus connected to a device itself and control a physical layer, a logical layer control unit which controls a logical layer in communication with the other apparatus, and a control unit which controls the logical layer control unit from a power-supply ON state to a standby state in accordance with a standby instruction for the device itself, wherein one physical layer control unit of the n physical layer control units generates a clock using a connected resonator and the other physical layer control units receive the clock generated by the physical layer control unit to which the resonator is connected.

Abstract: A signal input switching circuit, including a switch circuit including a plurality of input terminals to which signals are respectively applied as input from different signal sources, and the switch circuit supplying as output thereof a signal that is applied as input by way of an input terminal selected from among the plurality of input terminals, and input control units provided corresponding to each of the plurality of input terminals belonging to the switch circuit, controlling signal sources that are connected to input terminals that were not selected by the switch circuit to not present signals to the corresponding input terminals.

Abstract: A display apparatus has a friction surface which makes friction force between a base and a support surface on a lower surface of the base that supports the display body, in which the friction surface has a high friction surface having a relatively high friction coefficient and a low friction surface having a lower friction coefficient than that of the high friction surface, and the low friction surface protrudes further than the high friction surface.

Abstract: A projector has a light source, image forming units, a projection lens, a first optical system and a second optical system. The image forming units form image light by adjusting, on a per-pixel basis, the intensity of light emitted by the light source. The projection lens projects the image light formed by the image forming units to the outside. The first optical system guides light of a first wavelength emitted by the light source to the projection lens, and the second optical system guides light of a second wavelength emitted by the light source to the projection lens. The f-number of the first optical system is higher than the f-number of the second optical system.