Seiko Epson Corporation

Takashi Nitta

Junichi Nakamura

Tsunemori Asahi

Shoichi Uchiyama

Mikio Aoki

Hirotaka Ohashi

Naoki Kuwata

Yoshitaka Itoh

Yoshihiro Nakami

Shinichi Kamoshida

Shinichi Arazaki

Shohei Yoshida

Toshio Tanaka

Katsuhito Gomi

Haruhisa Kurane

Satoshi Ogawa

Yoshiteru Nishimura

Shigekazu Yanagisawa

Satoshi Yamada

An image display device includes: an optical modulation element having a plurality of pixels; light sources illuminating the optical modulation element, each of which is independently controlled; a light source control value setting section setting control values for each of the light sources according to the grayscale of each pixel of an input image; optical sensors provided on areas of 'n' pixels, respectively, where the 'n' is an integer equal to or greater than 1; an illumination detection section detecting the illumination of the areas by the optical sensors; and a grayscale control section processing to correct grayscale of each pixel based on the detected illumination and controlling the optical modulation element according to the corrected grayscales obtained by correction.

Image display device and image display method using black display

The quality of an image recorded on electronic paper is improved. Specifically, electronic paper for displaying an image is supplied in a region in which an electric field is generated in the thickness direction of the electronic paper, the electronic paper having charged color particles and being used for displaying an image as a result of charged color particles migrating in the thickness direction. Voltage for generating an electric field in the region is controlled by a voltage control section so that the value of the voltage varies together with time. The quality of an image recorded on electronic paper can thereby be improved.

Device and method for recording image to electronic paper

The object of the present invention is to provide a printer capable of efficiently processing print data corresponding to a plurality of images in the main scanning direction, as in the case of an index print, with a limited memory capacity, thereby improving the throughput, and an image data processing method for executing the operations of the printer. An image data processing section accesses original image data including partial images of a plurality of images printed through one main scanning, and generates bit image data by executing predetermined image processing. An image data control section temporarily stores the image data in a primary buffer, and when necessary, reads out a part thereof from the primary buffer band by band, copies the read data to a band (secondary) buffer, and sends the data to a print processing section. Therefore, it is no longer necessary to access the original image data to obtain each portion of the partial images and execute predetermined image processing each time when the necessity arises, thereby improving the processing efficiency.

Printer, image processing device, image processing method, and recording medium

There is provided an image display device with a two-modulation optical system for displaying an image corresponding to input image signals. The image display device includes a first optical modulation element for turning on or off pixels every subfield in the unit of plane; and second optical modulation elements for displaying gradation of the pixels in the unit of line, the first optical modulation element and the second optical modulation element are arranged optically in series; a second optical modulation element drive unit for driving the second optical modulation elements in a line-sequential manner; and a first optical modulation element drive unit for generating a control signal for controlling the pixels in lines disposed to correspond to the unit of single or several lines of the line-sequential driving of the second modulation elements with a driving interval in the unit of single or several lines and controlling the first optical modulation element in synchronism with the unit of single or several lines.

Image display device and projector

An image display device includes a first optical modulator that modulates a plurality of color lights coming from a light source, a color combination member that combines the color lights, a second optical modulator that modulates a light provided by the color combination member as a result of the color light combination, and a relay optical system that is disposed between the color combination member and the second optical modulator. The replay optical system guides the light provided by the color combination member to the second optical modulator. A light transmissive member is disposed between the relay optical system and the second optical modulator, and allows optical path conditions from the first optical modulator to the relay optical system via the color combination member to be substantially the same as optical path conditions from the relay optical system to the second optical modulator.

A display control apparatus that controls first and second modulation sections optically connected in series includes a storage unit and a control unit. The storage unit stores information to specify a defective pixel of the first modulation section. The control unit controls the second modulation section in response to a defect of the defective pixel being stored in the storage unit.

Display control apparatus and method

A projector includes: a first light modulation device that modulates illumination light; a second light modulation device that further modulates the illumination light modulated by the first light modulation device; a projection unit that projects the modulated illumination light toward a screen; and an optical device moving unit that moves an optical device blocking at least part of the illumination light relatively to a light path of the illumination light to move the device off the light path in response to an external request.

Projector

In a projection-type display device, a display control devicethat controls a first DMDand a second DMDis composed by comprising an interface circuit, a mirror device drive circuitfor controlling the driving of the micromirrors of second DMD, a mirror device drive circuitfor controlling the driving of the micromirrors of second DMD, a CPUthat controls computations and the entire system based on a control program, a ROMthat contains the control program of CPUand so forth in a predefined area, and a RAMfor containing data read from ROMand so forth and computation results required for the computation process of CPU

Gradation control device, optical display device, gradation control program, optical display device control program, method of controlling gradation and method of controlling optical display device

Exemplary embodiments of the present invention provide a light propagation characteristic control apparatus which extends the light-intensity dynamic range and the number of levels, and are suited for enhancing image quality and reducing the size and generation time of tables. Exemplary embodiments provide a projection display apparatus that tentatively decides a transmissivity Tof each pixel of a color-modulation light valve depending upon HDR display data, and decides a transmissivity Tof each pixel of an intensity-modulation light valve depending upon a tentatively decided transmissivity Tand the HDR display data, and a control value of each pixel of the intensity-modulation light valve depending upon a decided transmissivity T. Depending upon a decided transmissivity Tand the HDR display data, transmissivity Tis decided of each pixel of the color-modulation light valve. Depending upon a decided transmissivity T, a control value is decided of each pixel of the color-modulation light valve.

Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control program, optical display apparatus control program, light propagation characteristic control method and optical display apparatus control method

An image display device that displays an image by modulating a light from a light source according to display image data, includes: a first light modulation element that modulates a light emitted from the light source; and a second light modulation element that is disposed on an optical path in series with the first light modulation element and modulates a light exiting from the first light modulation element, wherein the first light modulation element and the second light modulation element are disposed in such a manner that a bright-field direction of an optical image of the first light modulation element and a bright-field direction of the second light modulation element almost coincide with each other.

An image processing apparatus for controlling a display apparatus including a luminance modulation element and a color modulation element that are configured using different modulation elements, includes: a control value determination unit that determines, based on an input target color value, using a plurality of color conversion matrixes that describe a relationship between the target color value and a control value for the color modulation element for each control value for the luminance modulation element, the control value for the color modulation element; and a correction unit that non-linearly corrects the control value for the color modulation element according to a characteristic of the color modulation element.

Image processing apparatus and image processing method

Exemplary embodiments of the invention provide an optical display device that modulates light from a light source in two stages through an optical modulator and a luminance adjusting element to expand the luminance dynamic range and the number of the gradation levels of a display image, that allows the picture quality to be enhanced, and that is suitably applied to display an image according to the resolution of the luminance adjusting element having a higher resolution than the optical modulator. Exemplary embodiments provide a projection type display device that converts RGB pixel values in HDR display data into YCbCr pixel values, selects the maximum Yfrom corresponding YCbCr values on a pixel-basis in a color modulation light valve, and calculates average values Cband Cr. The device converts YCbCr pixel values consisting of these values into RGB pixel values, determines the transmittance Tof each of the pixels in the color modulation light valve using the RGB value, then determines the transmittance Tof each of the pixels in the luminance modulation light valve based on the transmittance T, and determines control values for the light valves based on the values Tand T

Optical display device, program for controlling the optical display device, and method of controlling the optical display device

A projection-type display deviceincluding a light source, an optical integrator, dichroic mirrorsand, a reflecting mirror, a relay optical system, parallelizing lensesB,G andR, liquid crystal light valvesB,G andR, incident side lensesB,G andR, a light-synthesizing cross dichroic prism, a relay lens, an emergent side lens, a liquid crystal light valveand a projection lens, and liquid crystal light valveis provided in the rear stage of liquid crystal light valvesB,G andR.

Optical display device and projection-type display device

Aspects of the invention can provide an image display apparatus for displaying an image by modulating light from a light source based on display image data. The apparatus can include a first light modulator device can modulate light from the light source, a second light modulator device that can modulate the light from the first light modulator device, and a polarization compensation system disposed between the first light modulator device and the second light modulator device for compensating a polarization state of light.

Image display apparatus, projector, and polarization compensation system

The invention provides an image processing system which is suitable to carry out image processing in excellent accuracy while removing influence due to characteristics depending on the type difference and which facilitates wide and flexible adaptation over image capturing devices. A digital camera includes an image pick-up sensor unit which receives images as data, a URL memory unit which stores a URL to indicate an acquisition site of image processing data, and a URL adding unit which adds the URL in the URL memory unit to the image data. The printer includes an RAW data read unit which reads out the image data, a URL acquisition unit which acquires the URL added to the image data, an image processing data acquisition unit which acquires the image processing data from the image processing data storage server based on the acquired URL, and an image data processing unit to process the image data based on the acquired image processing data.

Image processing system, image capturing device, image processing terminal, image processing data storage terminal, program for the device, program for the terminal, data structure of image data, method of processing image, and method of generating image data

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Chino, Japan

Takashi Nitta