Abstract: A communication device includes a communication part configured to establish a connection to either a first device or a second device, and a controller configured to control the communication part. The controller is configured to send a predetermined notice to the second device before disconnecting the connection with the second device in a predetermined operation mode to switch the connection from the second device to the first device, but the controller does not make the predetermined notice in other cases.

Abstract: A light source device includes first and second surface light sources, a first optical system that forms light source images of the first and second surface light sources on an image forming surface, an optical element provided with a columnar light guide section, and a second optical system that forms, on an entrance surface of the light guide section, an image of a synthesis surface light source comprising the light source images of the first and second surface light sources. The first optical system includes a reflection element provided with a first reflection surface that reflects a first light flux from the first surface light source toward the image forming surface, and a second reflection surface that reflects a second light flux from the second surface light source toward the image forming surface and that is at right angles to the first reflection surface.

Abstract: A display device includes a display panel including a display screen for displaying an image, and a terminal detection unit. When the terminal detection unit detects that a portable information terminal is arranged on the display screen, the display device transmits a data area generation instruction to secure a data area to a storage device to cause the storage device to secure the data area. The display device receives information indicating a location of the data area from the storage device. The display device causes the display screen to display a storage location image including the information indicating the location of the data area on a part of the display screen on which the portable information terminal is arranged, and notifies the portable information terminal of the location of the data area through the storage location image.

Abstract: A portable information terminal includes an imaging unit that captures a storage location image displayed on a display device to acquire information indicating a storage location in a storage device, a display panel including a display screen that displays a data image and a display device image indicating the display device, and a manipulation detection unit that detects, on the display screen, a manipulation of moving the data image toward the display device image. The portable information terminal stores data in the storage location when the manipulation detection unit detects the manipulation.

Abstract: A display device includes a display including a plurality of pixels having a plurality of light-emitting elements, a pixel selector configured to select a pixel from among a plurality of pixels, a positional information generator configured to generate the positional information representing the position of the selected pixel, and a light emission processor configured to superpose the positional information on the light emitted by the selected pixel. A position detecting device is used to detect and output the positional information superposed on the light of the selected pixel on the display device, thus making it easy to accurately detect the position of the pixel subjected to calibration in luminance.

Abstract: A projection-type display device includes: a light source; a dust-proof case; heat-dissipating fins; a heat-dissipation fan that causes cooling air to flow into the heat-dissipating fins; a prism unit that is provided inside the dust-proof case and that separates light from the light source into a multiplicity of illumination light beams; an internal circulation fan; heat-receiving fins; and heat pipes that connect the heat-dissipating fins and the heat-receiving fins. The heat-receiving fins and the heat-dissipating fins are both formed in a substantially rectangular parallelepiped shape, each having, as cooling air inflow surfaces that are effective in heat dissipation or heat reception, a first surface and a second surface whose area is greater than the first surface. The cooling airflow inside the dust-proof case that is supplied by the internal circulation fan flows from the first and second surfaces of the heat-receiving fins.

Abstract: A display device is for displaying an image generated by an image processing device. The display device includes: a video decoding and input unit that receives an encoded image of a reference signal generated by the image processing device, and decodes the encoded image; a video display unit that performs image quality correction of the decoded image and displays, on a display panel, the image to which the image quality correction has been performed; and an image cut-out unit that cuts out an image at a position corresponding to the reference signal from an image to which the image quality correction has not been performed and transmits the cut out image to which the image quality correction has been performed, to the image processing device.

Abstract: A display device includes: a display unit daisy-chain connected to a source device that outputs an image signal encoded with a prescribed version of a standard specified as a prescribed standard, displaying an image generated by decoding the image signal encoded with the prescribed version; a determination unit that determines the number of connected sink devices that are daisy-chain connected to the source device; and a setting unit that sets, from among the prescribed versions, a version in which the image that was generated by decoding the image signal encoded by the source device is displayable on the display units of all of the daisy-chain connected sink devices, depending on the number of connected sink devices.

Abstract: A display device is connectible to a first video signal output device and a second video signal output device. Upon receiving an input switch instruction from the first video signal output device, the display device is configured to inhibit a first video from the first video signal output device from being displayed when displaying a second video from the second video signal output device.

Abstract: An image display device includes a plurality of signal input parts, a plurality of sub-controllers configured to process video signals from a plurality of signal input parts, and a controller configured to generate a display screen to be displayed on a display. The controller obtains the timing information for a video signal from the sub-controller based on the display information installed in advance.

Abstract: A projector that can increase the brightness of an image, includes: first and second image forming elements that each include micromirrors; a projection lens that projects images formed on the first and second image forming elements; and a light source/optical unit that irradiates the first and second image forming elements with first blue light and second blue light in a first display period, and irradiates the first image forming element with the green light and irradiates the second image forming element with the red light in a second display period.

Abstract: A video display apparatus includes: an inputter that receives an input of divided video signals representing divided images obtained by dividing an output image and acquires signal information for each of the divided video signals; a video signal processor that applies processing to the divided video signals and generates an output video signal representing an image obtained by combining the divided images; a controller that acquires the signal information from the inputter and supplies a control signal relating to the processing to the video signal processor; and a display that displays the image represented by the output video signal, and the number of kinds of signal information acquired by the controller with respect to some divided video signals among the divided video signals is greater than the number of kinds of signal information acquired by the controller with respect to the other divided video signals.

Abstract: A plurality of semiconductor light-emitting elements are to be efficiently cooled. There are provided a plurality of semiconductor light-emitting elements that are arranged in n rows and m columns, and a plurality of flow channels where a cooling medium flows through, the plurality of flow channels being formed to sandwich the n rows of semiconductor light-emitting elements or the m columns of semiconductor light-emitting elements.

Abstract: A light source device includes: a light source unit provided with a plurality of laser light sources provided in an array, the laser light sources being divided into first and second laser light source groups; a first diffusion plate that diffuses light emitted by the first laser light source group and emits first diffused light; a second diffusion plate that diffuses light emitted by the second laser light source group and emits second diffused light having a diffusion angle greater than that of the first diffused light; and optical path merging members that bend the optical path of the first diffused light to merge the optical path of the first diffused light with the optical path of the second diffused light and supply third diffused light in which the first and second diffused light are mixed.

Abstract: A position detection device has: a light sensor including a first light detection unit being located at a position facing a display screen on a first display device, and a second light detection unit being located at a position facing a display screen on a second display device that is provided adjacent to the first display device; and a position detection unit configured to detect a distance across a non-display region between the display screen of the first display device and the display screen of the second display device based on results of detection, by the first light detection unit, of a position adjustment image displayed on the display screen of the first display device, results of detection, by the second light detection unit, of a position adjustment image displayed on the display screen of the second display device, and display content of the position adjustment images.

Abstract: The present invention provides a method for establishing a connection path by way of a wireless LAN path of a projector and a wireless LAN terminal even when the operating mode is switched. The method establishes a wireless LAN connection between a wireless LAN terminal and a projector that can operate as an access point apparatus or a client apparatus of a wireless LAN. The projector projects connection information that indicates SSID, the wireless LAN terminal receives the connection information as input by way of a provided input unit, and further, operates as an access point apparatus. The projector detects the wireless LAN terminal that is operating as an access point device by means of a site survey, and the projector then connects to the wireless LAN terminal as a client apparatus.

Abstract: A projector apparatus that can effectively reduce bending of a base plate supporting a lens shifting unit thereon and facilitates replacement of unit parts in the event of a failure is provided. The projector apparatus includes: a base plate attached inside a projector body; a lens supporting unit attached to the base plate and supporting a projection lens so as to be movable relative to the base plate; guiding mechanisms for guiding the lens supporting unit so as to be freely movable in a horizontal direction and a normal direction relative to the base plate; and fixing devices which fix the base plate to the projector body. The fixing devices include a plurality of first fixing devices provided at a peripheral edge of the base plate, and second fixing devices provided on an inner side of the plurality of first fixing devices.

Abstract: A display device includes a signal detector for detecting gradation pixel data input to a display having multiple pixels, a current detector for detecting currents supplied to at least part of the pixels included in the multiple pixels, and an output part for outputting current data corresponding to currents supplied to the part of the pixels and signal data corresponding to gradation pixel data used for the part of the pixels. Accordingly, it is possible to compare current data with signal data, and therefore, it is possible to confirm whether or not video signals are correctly displayed on a screen.

Abstract: A display system includes: a display device that transits from a power-off state to a power-on state; and a brightness calculation device that calculates a brightness setting sequence based on a humidity amount over a first period in which the display device is in the power-off state, the brightness setting sequence being a sequence of a setting value of a brightness of the display device during a second period, the second period starting from when the display device transits to the power-on state, the setting value changing in time series. The display device displays an image signal at a brightness according to the brightness setting sequence.

Abstract: An image display device that is daisy-chain connected includes: a storage unit that holds identification data that include information of its own device; and a control unit that, when a next-stage side apparatus is connected that is an image display device that can receive a video signal relayed by its own device, receives the identification data of the next-stage side apparatus from that next-stage side apparatus, and when the identification data that were received indicate that the next-stage side apparatus is the same apparatus type as its own device, retains the identification data of its own device without alteration.