Abstract: A signal discriminating and monitoring circuit provides a full black detection circuit which detects a full black signal input during the change of the video signal and holds the detection result of the full black signal only during the specified time period. When a full black video signal is detected in the full black detection circuit, the signal discriminating and monitoring circuit detects whether the resolution of the video signal input has changed by determining whether the frequency of the horizontal synchronization signal included in the video signal of the next frame to be input changed above a preset value. When a change in the resolution of the video signal is detected, the change detected signal indicates that the detection result is output. When a scalar circuit receives the change detected signal, the video display signal is output as a constant value in order to set the display video in the static state.

Abstract: In order to minimize a change in the luminance of a projected image caused by a lamp refreshing process, projector 10 according to the present invention includes lamp refreshing controller 13 which, upon detecting that the lighting power of lamp 15 is lower than rated power thereof for a given period of time, increases the lighting power of lamp 15 to the rated power and, after elapse of a predetermined period of time, reduces the lighting power to an original level thereof, and aperture data generator 16 which controls the aperture of optical diaphragm 18 depending on a change in the lighting power to keep constant the amount of light passing through optical diaphragm 18.

Abstract: A projection type display device includes: optical modulation elements, an illumination optical system that includes light sources for emitting light from light emitting units, and condensing optical systems; and vibrator. The optical modulation elements have optical modulation surfaces for modulating incident light based on image information. The condensing optical systems condense the light from the light sources to form images on the optical modulation surfaces. A vibrator vibrates components of the illumination optical system to move areas on the optical modulation surfaces that are irradiated with the light away from the illumination optical system.

Abstract: A lighting device includes excitation light sources, phosphor wheel that emits green fluorescent light, a collimator lens that converts the emitted fluorescent light into parallel luminous flux, a red laser, a blue laser, a dichroic mirror that combines the excitation light supplied from the excitation light sources and the light supplied from the red laser, and a cross dichroic prism that combines the fluorescent light emitted from phosphor wheel, the light supplied from the red laser and the light supplied from the blue laser. The cross dichroic prism supplies the excitation light supplied from the excitation light sources to the collimator lens and the collimator lens condenses the incident excitation light on the phosphor wheel.

Abstract: A fixing structure for a multi-screen display unit which forms a large screen by contiguously disposing a plurality of display units with respect to a mounting pedestal by making a first supporting member provided on the back surface of the display unit be engaged with a second supporting member provided at the mounting pedestal, wherein the first supporting member includes a monitor fitting which has a display-side supporting plate provided so as to protrude from the back surface and is disposed at a corner portion of the back surface of the display unit, the second supporting member includes a fixing-side supporting plate which is provided at a position corresponding to the display-side supporting plate to protrude toward the back surface and supports the display-side supporting plate, and a pin member is provided in an upright manner at the fixing-side supporting plate.

Abstract: Provided are a light source device that can effectively cool a surface side of a light-emitting element substrate, and a projection type display device that includes the same. The light source device includes substrate (290), light-emitting element (210), optical element (400), and optical element support member (300). Two through-holes (220) are formed in substrate (290). Light-emitting element (210) is mounted on substrate (290). Optical element support member (300) is located to surround two through-holes (220) and light-emitting element (210), and forms, with substrate (290), flow path (700) that passes through light exit surface (211) of light-emitting element (210). Each through-hole (220) and flow path (700) are connected to each other.

Abstract: This invention realizes an illumination optical system with a small etendue that has a longer lifetime and a high degree of brightness. The invention includes: a laser light source that generates excitation light having a first wavelength; a phosphor wheel including a blue fluorescent light generation region that generates fluorescent light having a second wavelength by means of the excitation light, and a green fluorescent light generation region that generates fluorescent light having a third wavelength by means of the excitation light; an LED light source that generates light having a fourth wavelength; and a dichroic mirror that reflects fluorescent light having the second wavelength and fluorescent light having the third wavelength and allows light having the fourth wavelength to pass therethrough, to thereby emit each of the lights in the same direction.

Abstract: A dust removal device is provided which reduces the differences, among different dusty environments, in time at which dust collection is started until the time when possible clogging may occur to significantly increase the time from the start of dust collection until the time when possible clogging occur, while improving dust removal performance. The dust removal device includes main filter 10 that is formed of non-woven cloth 8 with charged fiber, duct 6-1 with main filter 10 disposed therein, sub-filter 11 including a plurality of cylindrical air trunks formed of a charged member, and duct 6-2 with sub-filter 11 disposed therein. Duct 6-1 and duct 6-2 are in communication with each other. In operation, air flows from duct 6-1 to duct 6-2. Main filter 10 in duct 6-1 has a larger vent cross-sectional area than sub-filter 11 in duct 6-2.

Abstract: Provided is an electronic equipment cabinet capable of detecting a storage state of a circuit board unit by using a smaller number of switches than circuit board units. The electronic equipment cabinet, which stores a plurality of circuit board units inserted and extracted in the same direction, includes a plurality of slots for storing the circuit board units, a plurality of cover members for covering the slots, and a switch for detecting closing of all the slots. The cover members, which are provided by a plurality of types having an installation order restricting mechanism for preventing closing of the slots, except for when the cover members are installed according to a preset installation order, includes a driving member located in a final-installation cover member that is installed last and configured to drive the switch.

Abstract: A video processing device includes: a deserializer that both converts a serial digital interface signal received as input to parallel data and extracts a clock; format detection means that both detects a video data format that is included in the parallel data that were converted by the deserializer and supplies clock ratio information that indicates the ratio of the clock frequency and the pixel clock frequency stipulated by the format; pixel clock generation means that generates a pixel clock based on the clock that was extracted by the deserializer; saving means that saves video data and supplies the saved video data in synchronization with the pixel clock; write control means that, based on the clock ratio information, divides the video data that are contained in the parallel data that were converted by the deserializer into two or four portions and saves the divided data in the saving means; and an unpack processor that, synchronized with the pixel clock, subjects the data that are supplied from the savin

Abstract: Provided is a speaker fall prevention structure, which includes a speaker device formed by housing a speaker unit in a housing independent of a main appliance, a speaker attaching part provided to the main appliance to allow the speaker device to be attached, an attached part facing the speaker attaching part in the speaker device, a fall prevention wire set between the speaker device and the main appliance, and a fastening member for attaching the attached part to the speaker attaching part. Using the fastening member, a first end of the fall prevention wire is fastened and fixed to the main appliance along with the attached part.

Abstract: A projection image display apparatus that enlarges and displays an image includes a case, a laser light source, a cooling mechanism that includes a component that produces vibration during an operation, a diffuser that diffuses light emitted from the laser light source, optics that shape the light that is diffused by the diffuser to light having a uniform luminance distribution and a rectangular cross-section, and an optical modulation element that modulates the light shaped by the optics.

Abstract: In order to make visible the image in a region which is hidden by an image sensor provided on a display unit when performing color calibration, an image display device of the present invention includes a sensor position detecting unit that detects a position on a screen where the image sensor is provided, and an image processing unit that displays, at another region on the screen, an image at the position on the screen that is detected by the sensor position detecting unit.

Abstract: A Fiber Channel or other high speed data transmission channel is provided to transfer movie files and other content between shared storage and screen servers to enhance content availability in a digital cinema system. In one embodiment a digital cinema system is provided that includes a first screen server coupled to a first digital projector. Additionally, the digital cinema system includes a memory for storing a digital movie, and a Fiber Channel communication link coupled between the first screen server and the memory. The Fiber Channel communication link is configured to transmit a copy of the digital movie from the memory to the first server for storage therein.

Abstract: An electronic device of the present application includes a case (1), a stem-shaped leg (3), and a leg fixing part (4). The leg fixing part (4) is provided on one face of the case (1) and includes a case thread ridge portion (4a) that is formed on an inside face of a hole, into which the leg (3) is inserted, and that is divided into isolated thread ridge portions. A peripheral face of a stem portion of the leg (3) has a first screw structure portion (3a), which is engaged with the case thread ridge portion (4a), and a second screw structure portion (3b) which is engaged with the case thread ridge portion (4a) before being engaged with the first screw structure portion (3a). The second screw structure portion (3b) has a guide portion (5a) and an idle turn inducing portion (5b). The guide portion (5a) guides the case thread ridge portion (4a) to the second screw structure portion (3b) when the leg (3) is inserted into the hole while being turned in a direction in which the leg (3) enters the case (1).

Abstract: Provided is a light source device capable of effectively cooling a bulb included therein. The light source device includes: a luminous tube having a bulb to seal a pair of electrodes that generates light by electric discharging; a reflector formed into a concave surface shape and configured to emit light from the bulb; and an air blowing device that generates a flow of gas to cool the luminous tube.

Abstract: Provided is an optical unit that includes: light source (1a); light source (1b) located to face light source (1a); color wheel (2) located between light sources (1a and 1b); prism unit (3a) that totally reflects light emitted from light source (1a) and that is transmitted through color wheel (2), and transmits light emitted from light source (1b) to enter color wheel (2); and prism unit (3b) that totally reflects the light emitted from light source (1b) and that is transmitted through color wheel (2), and transmits the light emitted from light source (1a) to enter color wheel (2).

Abstract: A chromaticity correction device corrects chromaticity of a video signal displayed on a display panel of a display device to correspond to a change in a luminance value of the display panel. The chromaticity correction device includes a luminance detection unit which detects the luminance value, a backlight driving level detection unit which detects a backlight driving level, a temperature detection unit which detects an internal device temperature or an ambient temperature, a reference luminance value calculation unit which estimates a reference luminance value in a characteristic of an initial state, a chromaticity calculation unit which obtains a chromaticity change amount of white point chromaticity and estimated white point chromaticity that is an estimated value of current white point chromaticity, a chromaticity correction value calculation unit which obtains a chromaticity correction value and a chromaticity correction circuit which corrects the chromaticity of the video signal.