Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Other

Nec-mitsubishi Electric Visual Systems Corporation

Jun Someya

Yoshiaki Okuno

Hiroaki Sugiura

Hideki Yoshii

Masaki Yamakawa

Noritaka Okuda

Akihiro Nagase

Shuichi Kagawa

Satoshi Yamanaka

Yoshiki Ono

Tomohiro Sasagawa

Kazuhiro Chiba

Noriko Bamba

Takashi Hashimoto

Akihiko Iwata

Shinsuke Shikama

Hiroshi Ueno

Kazuhiko Tsutsumi

Kuniko Kojima

Shigeo Takata

Hironobu Arimoto

Takao Nakano

Yoshiteru Suzuki

Kazuyoshi Watabu

Mamoru Inamura

Akira Okumura

Koji Rikukawa

Masaru Nishimura

Yoshie Yamamoto

Takeshi Nagayama

Noboru Sunada

Hiroshi Sasaki

Kazuo Maeda

Kazuhiro Ito

Muneharu Kuwata

Ikuro Suga

Takahiro Urakabe

Masako Asamura

Takayoshi Nagai

Shigeki Harada

Eiji Niikura

Kazuo Kyuma

Hironobu Yasui

Kyoichiro Oda

Yoshikazu Tsunoda

Toshihiro Gai

Kazuya Maeshima

Toru Shiraki

Takahito Nakanishi

Daisuke Abe

Rena Nishitani

Ryosuke Namiki

Katsuhiro Hirose

Tatsuya Aoki

Mario Sato

Kengo Mori

Takao Nakan

Provided is a communication relay apparatus configured to relay communication between a plurality of segments of a network by a plurality of communication devices including an indoor unit and an outdoor unit connected to one another via the network, the communication relay apparatus including a relay setting unit configured to set a first mode value corresponding to processing of relaying all frames and a second mode value corresponding to processing of relaying a frame on the basis of a destination address of the frame, and a relay determination unit configured to perform processing of relaying the frame in an operation mode corresponding to a relay mode value set by the relay setting unit.

Communication relay apparatus and air-conditioning system

A ventilation device includes an outside air heat exchanger disposed between a total heat exchanger and an outside air port, a return air heat exchanger disposed between the total heat exchanger and a return air port, and a supply air heat exchanger disposed between the total heat exchanger and a supply air port. A compressor, a flow switching device, the outside air heat exchanger, an outside air expansion device, and the return air heat exchanger are sequentially connected by pipes, the supply air heat exchanger and a supply air expansion device which are connected in series by pipes are connected in parallel to the outside air heat exchanger and the outside air expansion device by pipes, thereby forming a refrigerant circuit in which refrigerant is circulated.

Ventilation device

An air-conditioning apparatus includes a refrigerant circuit in which a compressor, a first heat exchanger, an expansion unit, a second heat exchanger, and a first cooling unit having a refrigerant path are connected to each other by a pipe and through which refrigerant flows, a controller configured to control operation of the compressor and having a heat-generating element, a heat transfer element having a proximal end connected to the heat-generating element and a distal end connected to the first cooling unit, and conveying heat generated by the heat-generating element, and a second cooling unit connected between the proximal end and the distal end of the heat transfer element and cooling the heat transfer element, and the first cooling unit cools the heat transfer element using the refrigerant.

Air-conditioning apparatus

In an air-conditioning apparatus and a method of detecting an abnormality in a transmission line, the air-conditioning apparatus includes plural facility apparatuses which are connected to each other by a transmission line and communicate with each other. One of the plural facility apparatuses includes: a transmission circuit including an abnormality detection comparator which detects an abnormality in the transmission line, the transmission circuit being provided to detect the abnormality in the transmission line; and a data storage device which stores a reception signal and signal voltage wave-height information indicating that the abnormality in the transmission line is detected. The transmission circuit further compares a voltage value of a reception signal received from another of the plural facility apparatuses through the transmission line with a threshold value set in advance in the abnormality detection comparator.

Air-conditioning apparatus and method of detecting abnormality in transmission line

In the image processors and the image processing methods of the present invention, the number of bits for quantizing image data is adjusted on the basis of a dynamic range of each block. Therefore, the error introduced by encoding is reduced without increasing the data amount of the encoded image data, and the response speed of a liquid crystal can be controlled appropriately by preventing unnecessary voltages from being applied due to the error introduced by encoding.

Image processor, image processing method, image encoder, image encoding method, and image display device

A planar light source device includes a first light source for emitting a first light ray having a punctate spatial luminance distribution; a second light source for emitting a second light ray; a first spatial luminance distribution conversion portion for changing the first light ray to a linear spatial luminance distribution; a second spatial luminance distribution conversion portion for changing a spatial luminance distribution of the first and second light rays to a planar spatial luminance distribution; wherein the first light ray is a laser light; the second light ray has a divergence angle larger than the divergence angle of the first light ray when the first light ray is emitted from the first light source; and a slow-axis direction of the first light ray entering the second spatial luminance distribution conversion portion is parallel to an outgoing direction of the planar light.

Backlight device and liquid crystal display apparatus

An image display apparatus, and an apparatuse for and a method of image processing are provided that can reduce in real time a quantization noise in an image signal received by the image display apparatus. The image processor apparatus includes a variation calculator that calculates, as a variation B of grayscale, a difference in a grayscale value between adjacent pixels in a single dimension in a spatial direction, of an image signal A; a variation limiter that limits a range of a possible value of the variation B calculated by the variation calculator; a gradient determination unit that calculates a gradient of grayscale of image signals from the variation C having the value limited; an additional bit generator that generates an additional bit, based on the image signal grayscale gradient calculated by the gradient determination unit; a bit adder that adds to the image signals the additional-bit-generator-generated additional bit, to output the additional-bit-added image signals; and a display unit that displays an image based on an image signal to be output from the bit adder.

Image display apparatus, and method and apparatus for processing images

An image display device and an image display method are provided so as to suppress consumption power and provide a more brightly colored display image. The image display device is provided with a light modulating means wherein image data is inputted and an image is formed by modulating light from a light source based on the image data. The image display device is also provided with a color information detecting means for detecting a quantity of a chromatic color component of an image expressed by the image data; a light source control data generating means for generating light source control data for controlling brightness of the light source; and a light source control means for controlling the brightness of the light source based on the light source control data.

Image display apparatus and method

An image encoding device includes a dynamic range generator for outputting dynamic range data Ddof block image data Dc, an average value generator for outputting average value data Deof the block image data Dc, a number-of-pixel reducing unitfor decreasing number of pixels of the block image data by reduction-number of pixels to generate reduced-number-of-pixel block image data Dc', an encoding parameter generatorfor generating encoding parameter paspecifying a quantization bit rate and the reduction-number of pixels in accordance with the dynamic range data Dd, a quantization threshold generatorfor generating a quantization threshold value tb, and an image data quantizerfor generating quantized image data Dffrom the reduced-number-of-pixel block image data Dc&#x2032; with use of the quantization threshold value tb

Image encoding device, image processing device, image display device, image encoding method, and image processing method

Motion blur periods (bf) are detected () from gradation differences (g) between a first image signal (d) and a second image signal (d), gradation differences (g) between the second image signal (d) and a third image signal (d), and results of the detection of transition periods (h) in the gradations of the second image signal (d), and the second image signal (d) is corrected () only during the detected motion blur periods (bf). Transition periods (h) are deemed to occur when, for example, the absolute value of a gradation change in the second image signal is greater than a first predetermined threshold value (S) and less than a second predetermined threshold value S(&#x3c;S). Motion blur in the image signal can be detected without increased circuit size, and accordingly, the detected motion blur can be reduced.

Motion blur detecting apparatus and method, image processing apparatus, and image display apparatus

A projection display uses a light modulating device to modulate, in accordance with image data, light radiated from a light source, project the modulated light onto a screen, and display an image. The projection display separates a unit of time configuring the image data into an effective light time when the light modulating device can express the light as an image on the screen and an ineffective light time when the light modulating device cannot express the light as an image on the screen. The projection display increases the power supplied to the light source during the effective light time over the power supplied to the light source during the ineffective light time.

Projection display

The object of the present invention is to provide an image display apparatus, an image processing apparatus, and an image display method that are able to display images without motion blur without increasing the transmitted amount of image signal. An image display apparatus of the invention comprises an image reception unit that receives an image signal; a gray-level correction unit that corrects image signals each corresponding to sub-frames consisting of a plurality of pixel groups split from the received mage signal, using respective grayscale characteristics different from sub-frame to sub-frame; and an image display unit that displays the frame image by successively displaying the sub-frame images each having been gray-level-corrected.

Image display apparatus, image processing apparatus, and image display method

In a liquid-crystal-driving image processing circuit that encodes and decodes image data to reduce the frame memory size, the present invention has the object of providing a liquid-crystal-driving image processing circuit capable of correcting image data accurately and applying appropriately corrected voltages to the liquid crystal without being affected by encoding or decoding errors, even when moving images are input. To achieve the above object, the liquid-crystal-driving image processing circuit according to the present invention takes a difference between first decoded image data corresponding to the image in the current frame and second decoded image data corresponding to preceding-frame image data, selects either the image data of the current frame or the second decoded image data for each pixel on the basis of the difference, thereby generates preceding-frame image data, and corrects the gray-scale values of the image of the current frame on the basis of the preceding-frame image data and the image data of the current frame.

Liquid-crystal-driving image processing circuit, liquid-crystal-driving image processing method, and liquid crystal display apparatus

An image processing device and an image processing method according to the present invention, by dividing an image into a plurality of blocks, generates a control signal denoting a change in the image data, based on a result of comparing first encoded image data that is quantized from image data in each of the blocks based on representative values of the image data in each of the blocks with second encoded image data that is obtained by delaying the first encoded image data for a period equivalent to one frame, and generates one-frame-preceding image data by choosing on a pixel to pixel basis either the current-frame image data or second decoded image data that is obtained by decoding the second encoded image data, based on the control signal.

Image processor, image processing method, and image display device

A video display apparatus generates luminance information for individual frames of a video signal from histograms of the luminance component of the video signal, and classifies the content of the video signal on the basis of this information. Color saturation information is also generated from color saturation histograms, and scene changes are detected. Video correction parameters and display control parameters are derived from the content classification and color saturation information. The video signal is corrected according to the video correction parameters, and displayed according to the display control parameters. Display characteristics suitable for the video content are thereby obtained. The parameters are changed when a scene change is detected, so that the viewer is not disturbed by the change in video display characteristics.

Video display apparatus that adjusts video display parameters based on video picture type

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Tokyo, Japan

Jun Someya