Hakusan, Japan
Hakusan, Japan

EIZO Corporation or EIZO, is a manufacturer of high-end computer displays. A Japanese corporation, it was founded in March 1968 but did not adopt its current name until 1999, when Nanao Corporation and Eizo merged. It has its headquarters in Hakusan, Ishikawa Prefecture. Wikipedia.


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Patent
Eizo | Date: 2017-02-22

Provided is a photosensor device that even when the width and thickness of a bezel are reduced, can cause a sensor unit to smoothly exit and enter the bezel. Using drive means, a photosensor device (1) causes a sensor unit (3) to perform multiple rotation operations (4a, 4b, 4c, 4d). Thus, the sensor unit (3) is allowed to approach a display screen (101a) of an image display panel (101) for a measurement and to be stored in a bezel (20) after the measurement.


Patent
Eizo | Date: 2017-04-05

Provided is a liquid crystal display device that can further reduce flicker. The liquid crystal display device includes a control unit that controls the luminance of a backlight using PWM dimming. The backlight includes n (n4) number of backlight blocks that are turned on at different timings, and the n number of backlight blocks are turned on in an order different from the order in which the backlight blocks are physically arranged.


Patent
Eizo | Date: 2016-08-31

Improving the visibility of the dark portion and to prevent the degradation of image quality caused by excessive correction. A reflectance calculation unit is storing a parameter RGain for adjusting the amplitude of a reflectance component R. An illumination light correction unit generates a corrected illumination light component L1 from an illumination light component L and a formula L1=(log(LAmp*L+1))/(log(LAmp+1)). An image resynthesis unit obtains a corrected illumination light component L from L=LGain*L1+(1LGain)*L. The image resynthesis unit also calculates a corrected image Iout from the corrected illumination light component L and the corrected reflectance R, as well as from a formula Iout=exp(log L+RGain(log Ilog L)). The value of the corrected illumination light component (L) is determined based on the ratio (LGain) at which the output value of the correction function (L1) and the original illumination light component (L) are combined.


In a prediction system, terminal devices having monitors connected thereto and a server can communicate with each other through a network. Each terminal device acquires a luminance measured by a corresponding monitor and transmits it to the server. The server predicts the life of the monitors on the basis of information from the respective terminal devices and notifies the predicted life. The server previously stores information about the installation locations of the monitors. The server notifies the predicted life in such a manner that the installation location of each monitor and the predicted life are associated with each other. Each terminal device acquires, from a corresponding monitor, a measured luminance, a brightness setting at the time when the luminance has been measured, and information about the time when the luminance has been measured and transmits them to the server.


Patent
Eizo | Date: 2016-01-07

A display apparatus including a drive control section that performs control to repeatedly switch between a drive time period during which a backlight emits light and a rest time period during which the backlight does not emit light, in an alternating manner with a prescribed period. The drive control section controls a ratio between the drive time period and the rest time period, and controls the amount of drive current supplied to the backlight during the drive time period. The drive control section sets the rest time period to be a prescribed time period and controls the amount of the drive current for a range where an adjustment value is less than a prescribed value, and sets the drive current to a prescribed value and makes the rest time period shorter than the prescribed time period for a range where the adjustment value is greater than the prescribed value.


Patent
Eizo | Date: 2016-09-21

Provided is a display device and display method that can improve the moving image display performance. A display device includes a display panel and a backlight for the display panel. The display device also includes control means configured to output a control signal for controlling illumination and extinction of the backlight, to the backlight in synchronization with start of update of a frame on the display panel and update means configured to update a frame in each predetermined period in order to change one image displayed on a screen of the display panel. The control means outputs a control signal for controlling the backlight so that the backlight starts to illuminate after the update means starts to update one frame and ends illumination at the time point when the update means starts to update a frame subsequent to the one frame or after the time point.


An image quality enhancing apparatus, an image display apparatus, an image quality enhancing method, and a computer readable storage medium which make a learning-type image quality enhancing method utilizing a sparse expression practical are provided. The image quality enhancing apparatus calculates, from the feature quantity of an image, coefficients of low-image-quality base vectors expressing a feature quantity with a linear sum and generates the image with the enhanced image quality by calculating a linear sum of high-image-quality base vectors using the calculated coefficient. When calculating the coefficient, T base vectors highly influential on the feature quantity are selected from among a plurality of base vectors and an analytic solution making L2 norm of a coefficient matrix as small as possible is calculated. A sparse solution of the coefficients can be obtained without using the iteration method and a practical image quality enhancing apparatus can be realized.


An image quality enhancing apparatus which make a learning-type image quality enhancing method utilizing a sparse expression practical are provided. The apparatus calculates, from the feature quantity of an image, coefficients of low-image-quality base vectors expressing a feature quantity with a linear sum and generates the image with the image quality enhanced by calculating a linear sum of high-image-quality base vectors using the calculated coefficient. When calculating the coefficient, the number of base vectors with non-zero coefficients is determined, the determined number of base vectors is selected, and a solution of a coefficient matrix is calculated by assuming the coefficients of the base vectors other than the selected base vectors are zero. The amount of processes necessary for obtaining a sparse solution of a coefficient matrix can be reduced by adjusting the number of base vectors with non-zero coefficients, and a practical image quality enhancing apparatus can be realized.


Patent
Eizo | Date: 2016-10-05

Provided are a power supply device capable of supplying required power even during standby and an electrical apparatus. A power supply device includes a current resonant circuit configured to drive a transformer and a resonant circuit using a switching element, the resonant circuit being connected to a primary side of the transformer, the switching element being periodically repeatedly turned on and off, and a controller configured to control the switching element so that the switching element performs a continuous operation in which the switching element is turned on and off continuously repeatedly or an intermittent operation in which the switching element is turned on and off intermittently repeatedly, in accordance with an external signal indicating the continuous operation or the intermittent operation. The power supply device also includes a voltage detector configured to detect a voltage on a secondary side of the transformer and a switching unit configured to, when the controller is controlling the switching element so that it performs the intermittent operation, in accordance with an external signal indicating the intermittent operation and when a voltage detected by the voltage detector has fallen below a predetermined first threshold voltage, cause the controller to control the switching element so that it switches to perform the continuous operation.


Provided is a color adjustment apparatus, image display apparatus, and color adjustment method for adjusting color of a color image to enable easier distinction between objects shown in the image. A parameter defines a range of saturation to be adjusted within saturation before color adjustment and a range of change of the saturation after color adjustment compared to the saturation before color adjustment. The color adjustment apparatus calculates the saturation from an image signal, calculates the saturation after color adjustment according to the saturation before color adjustment such that the saturation in the range determined by the parameter increases/decreases by an amount determined by the parameter, and generates an image signal from the saturation after color change. By determining the parameter such that the saturation difference between prescribed colors is greater after color adjustment, the difference in color between a plurality of objects shown in the image is increased.

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