Seiko Epson Corporation

Junichi Nakamura

Tsunemori Asahi

Takashi Nitta

Shoichi Uchiyama

Osamu Wada

Yoshitaka Itoh

Akitaka Yajima

Kunio Yoneno

Tadaaki Nakayama

Akio Murata

Masatoshi Yonekubo

Tomio Sonehara

Shohei Yoshida

Hideya Seki

Kazunori Hiramatsu

Takeshi Furihata

Hiroshi Kamakura

Shuji Aruga

Takeshi Ono

The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.

Color display device and color display method

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.

Growing community of inventors

Shiojiri, Japan

Junichi Nakamura