Canon Kabushiki Kaisha

Kohei Inamura

Takeshi Ikeda

Naoto Abe

Hiroshi Saito

Osamu Sagano

Izumi Kanai

Yukio Hiraki

Masaru Tada

Mitsuru Tada

Eiichi Matsuzaki

Makiko Mori

Tatsuro Yamazaki

Nobuhiro Hoshi

Kousei Sugimoto

Toshiyuki Kanda

Masaharu Yamagishi

Toshiki Nakatani

Seiji Osawa

Hidetoshi Suzuki

Hideaki Mitsutake

Masaaki Iwane

Hiroshi Uchiike

Noritake Suzuki

Yukio Masuda

Seiji Ohsawa

Yuki Shindo

An image display apparatus according to the present invention includes: a light-emitting unit including a plurality of light sources and a conversion member; a display unit configured to display an image by modulating light from the light-emitting unit; a control unit configured to control respective light-emitting brightness of the plurality of light sources; an estimation unit configured to estimate, based on the respective light-emitting brightness, a first brightness distribution and a second brightness distribution; and an image processing unit configured to perform image processing, in which color unevenness due to a difference between the first brightness distribution and the second brightness distribution is reduced, to input image data.

Image display apparatus and method for controlling same

An image display apparatus includes: a light-emitting unit, a light emission amount of which is variably controllable; a display unit configured to display an image by modulating, according to image data, light emitted from the light-emitting unit; and a control unit configured to control the light emission amount of the light-emitting unit according to a maximum and a minimum of a pixel value in a frame. The control unit maximizes the light emission amount of the light-emitting unit irrespective of the maximum when the minimum is larger than a first threshold.

Image display apparatus and control method therefor for controlling light emission amount of light-emitting unit

An image display apparatus according to the present invention includes: a light-emitting unit capable of separately controlling the emission brightness in each of a plurality of divided regions in a screen; a determining unit configured to determine a target brightness of a predetermined divided region, based on image data corresponding to the predetermined divided region; an estimating unit configured to estimate the brightness of the predetermined divided region when light is emitted by the light-emitting unit at emission brightness which is based on image data in each of the plurality of divided regions; and a control unit configured to control the emission brightness of two or more divided regions including the predetermined divided region based on the difference between the target brightness determined by the determining unit and the brightness estimated by the estimating unit.

Image display apparatus and control method thereof

An image processing apparatus that corrects gradation of a first image, which is one image from among the image for left eye and the image for right eye, and gradation of a second image, which is the other image from among the image for left eye and the image for right eye, the image processing apparatus comprises: a detection unit that detects parallax between the first image and second image; a correction unit that detects a pixel in the second image corresponding to a pixel in the first image on the basis of the parallax, and corrects a gradation value of the pixel in the first image and a gradation value of the pixel in the second image corresponding to the pixel in the first image by using a single gradation conversion curve.

Image processing apparatus and control method thereof

A video processing apparatus that can be connected to a video playback apparatus includes an input unit configured to input video data from the video playback apparatus, an interpolation unit configured to generate interpolated frame image data of input video data, and an output unit configured to output the interpolated frame image data as interpolated video data, wherein the interpolation unit generates different interpolated frame image data according to a playback mode of the video playback apparatus.

Video processing apparatus and controlling method for same

A frequency of each gradation in an image for the left eye histogram is compared with a frequency of each gradation in an image for the right eye histogram. An integration histogram is generated using at least a larger one of the frequency of each gradation in the image for the left eye histogram and the frequency of each gradation in the image for the right eye histogram. A gradation correction parameter is set based on the generated integration histogram. The gradations of the image for the left eye and the image for the right eye are corrected using the gradation correction parameter.

Image processing apparatus for displaying image on display unit and control method thereof

There is provided an image display apparatus including: a first correction unit for outputting data to determine a lighting time of a first pixel on the basis of data to indicate luminance of the first pixel, wherein the first correction unit carries out first correction to compensate a loss of the luminance of the first pixel; and a second correction unit for outputting data to determine a lighting time of a second pixel on the basis of data to indicate luminance of the second pixel, wherein the second correction unit carries out second correction to compensate a loss of the luminance of the second pixel by predicting a lighting state of the first pixel that is corrected by the first correction.

Image display apparatus and driving method of image display apparatus

The present invention relates to an image display apparatus for forming an image with a plurality of luminescent spots to be precisely aligned in a matrix. For example, a spacer disposed between an electron source and a face plate causes luminescent spots on the face plate spaced unevenly. The luminescent spots spaced unevenly will produce a visual unevenness in luminance which deteriorates the quality of produced image. By modifying the quantity of light of luminescent spots spaced unevenly, the visual unevenness in luminance is compensated.

Image display apparatus for forming an image with a plurality of luminescent points

A signal processing method comprises the steps of: inputting three signals specifying a color of one pixel; and generating four signals from the input three signals, wherein each of said four signals represents intensities of four different colors to display a color of one pixel by mixing colors, wherein said generating step includes a first converting step of converting the input three signals to two signals representing intensities of two colors among the four colors and a signal representing intensity of a mixed color obtained by mixing (a) the four colors or (b) a plurality of colors among the four colors; and a second converting step of converting the signal representing intensity of the mixed color to a plurality of signals representing intensities of a plurality of colors including at least other two colors different from the two colors.

Signal processing method, image display apparatus, and television apparatus

In the image display device according to the present invention, control is performed such that a condition of not using a subsidiary pixel which corresponds to a specific color among the subsidiary pixels constituting a first pixel is selected as a condition for signal processing to output a signal for designating intensity of each subsidiary pixels constituting the first pixel, and a condition of using a subsidiary pixel which corresponds to a specific color among the subsidiary pixel constituting a second pixel is selected as a condition for signal processing to output a signal for designating intensity of each subsidiary pixels constituting the second pixel adjacent to the first pixel in the first direction.

Image display apparatus

An image display apparatus including a plurality of pixels, a drive circuit for outputting drive signals for driving the pixels, and a correction circuit for correcting an input signal corresponding to a predetermined pixel with a correction value to output a corrected input signal to a side of the drive circuit, wherein the apparatus adopts as the correction value a value reflecting drive states of pixels located in the neighborhood of the predetermined pixel, the value being one having received an adjustment according to a nonlinear characteristic between a value of the input signal and a gray-level display of the pixel on the basis of the value of the input signal corresponding to the predetermined pixel.

Image display apparatus and correction method of image signal

The objective of the present invention is to enhance a specific color without changing the hue of an original image. At least two different gray-level correction functions are provided for luminance signals input for three colors, R, G and B, and these functions are used to calculate correction coefficients for the individual colors. Then, the luminance signals input for the three colors are synthesized so that the weighting of the colors is changed in accordance with the input luminance signals, and a correction coefficient is calculated that is used in common. The input signals are then multiplied by the thus obtained correction coefficient.

Image signal correction method and image signal correction apparatus

Provided are image display apparatus and image display methods capable of suitably making correction for variation of driving conditions due to an electric resistance of matrix wiring of a display panel by downsized hardware. The apparatus and methods involve a device of calculating voltage drop amounts caused by the resistance of row wires, for input image data, and a device of calculating image data with correction for the voltage drop amounts (corrected image data). An overflow processing circuit is provided so as to prevent overflow of the image data after the correction from an input range of a modulator, and the overflow is prevented by a gain. Since a gradation converter for changing a gradation conversion characteristic by a gain is provided in the stage preceding to the configuration for making the correction for influence of the voltage drop, it becomes feasible to cancel saturation characteristics of phosphors and to display images with high quality thereby.

Image display apparatus and image display methods

An image data processing circuit includes a first circuit for calculating an average picture level value of the image data, a multiplier for multiplying a coefficient by the image data, a second circuit for calculating a first coefficient for the multiplier based upon the average picture level value, and a third circuit for calculating a second coefficient for the multiplier. The second coefficient is calculated so that the result of multiplying (1) image data having a value over an input range of a circuit to which data from the multiplier is inputted, and (2) the second coefficient falls in the input range. In addition, a selection circuit selects the coefficient to be used in the multiplier from the first coefficient calculated by the second circuit and the second coefficient calculated by the third circuit.

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Sagamihara, Japan

Kohei Inamura