Abstract: A video imager may be used to measure the natural and/or artificial light levels in a space. The lighting estimates may be passed to a controller via a communication network. The lighting estimates may be in the form of actual radiance values, brightness, or other forms. The controller may determine if and which areas of the space require more light or if and which areas of the space have more light than required. Based on the lighting estimates, the controller may issue commands to turn on/off or dim/brighten the light from various ones or combinations of light sources in or around the space via actuators. The controller may also directly interface with the light sources.

Abstract: A method of producing a display image comprises receiving image information representing an image to be displayed, producing an image formed of a plurality of images of different colors, and projecting the produced image along an optical path. The differently colored images have color intensities related to energy applied to a light source. A level of energy is applied to the light source during production of the image of one color that is different than the level of energy applied to the light source during production of the image of another color.

Abstract: Extracting and processing video content encoded in a rendered color space to be emulated by an ambient light source, comprising extracting dominant color information from a video signal and transforming the color information through unrendered color space using tristimulus primary matrices to form a second rendered color space for ambient distribution. Steps include quantizing the rendered color space to form an assigned color distribution, such as by reducing possible color states, or binning to form superpixels; and selecting a dominant color using a mode, mean, median, or weighted average of pixel chromaticities. A color of interest can be further analyzed to produce a true dominant color, and past video frames can guide selection of dominant colors in future frames.

Abstract: A method of controlling a display characteristic in a television receiver enables automatic adjustment of the display characteristic according to ambient illuminance levels. The television receiver includes a display module for displaying a video signal; an illuminance sensor for detecting an ambient illuminance, the detected ambient illuminance corresponding to one of a plurality of primary display grades for controlling at least one display characteristic of the display module; a system controller for determining, based on the detected ambient illuminance, the primary display grade corresponding to the detected ambient illuminance and for determining a final display grade with respect to the determined primary display grade; and a display characteristic controller for generating at least one display characteristic control value corresponding to the final display grade and for controlling the display module using the generated at least one display characteristic control value.

Abstract: Video signals that are reproduced or processed are outputted to a first video image display device. An illuminance detection section detects the ambient illuminance during the output of the video signals. In the case that the detected illuminance is equal to or greater than a predetermined threshold, the reproduced or processed video signals are outputted to a second video image display device which provides a display with lower brightness than that for a display provided by the first video image display device.

Abstract: A display system is configured to produce a color image formed of a plurality of differently colored images and may include at least one light source that directs light along an optical path, and at least one filter having a given optical filter characteristic. The display system may be selectively operable in a first state in which the optical path does not pass through a first filter during production of the plurality of differently colored images to form a color image having a first optical characteristic, and in a second state in which the optical path passes through the first filter during production of the plurality of differently colored images to form a color image having a second optical characteristic different than the first optical characteristic.

Abstract: A circuit for detecting light is disclosed comprising: a) a light-integrating photo-sensor circuit having one or more thin-film photosensors and being responsive to a variable integration period signal and to ambient light for producing a photo signal representing the intensity of the ambient light, wherein the photo signal may be in one of at least three states including a no-signal state, an in-range state, and a saturated state; and b) a control circuit for receiving the photo signal and automatically increasing the period of the integration period signal when the photo signal is in the no-signal state and decreasing the period of the integration period signal when the photo signal is in the saturated state so as to result in the photo signal being in the in-range state and producing a corresponding ambient light signal.

Abstract: A video output device includes a signal converter for generating a video signal corresponding to displayed video; a projector and a main screen for displaying the video based on the video signal output from the signal converter; left and right lighting units, a left screen, and a right screen disposed in the vicinity of the main screen; and a feature extractor, a left-lighting setting unit, and a right-lighting setting unit for controlling lighting modes of the left and right lighting units based on the content of the displayed video in synchronization with the display timing of the video.

Abstract: Methods and apparatuses for the application of image intensity and luminance adjustment and gamma adjustment for the purpose of compensating perceived image brightness, and thus enhancing the range of display backlight brightness adjustment that may be applied to conserve power, while minimizing impact to image color shade, hue or saturation characteristics.

Abstract: An image display apparatus includes an image display section in which a plurality of light emitting elements are arranged in a matrix at intersections of a plurality of scan lines and a plurality of data lines. A control circuit selects one of modes as an operation mode in response to a mode switching signal, and outputs a data signal and a scan control signal based on an image signal to be displayed and the selected mode. A row driving section is connected to the plurality of scan lines to sequentially drive the plurality of scan lines based on the scan control signal in a unit determined based on the operation mode. A column driving section is connected to the plurality of data lines to sequentially drive the plurality of data lines based on the data signal. In this way, an image corresponding to the image signal is displayed on the image display section.

Abstract: This invention discloses an arrangement capable of controlling necessary display characteristics by a proper one of a controller and image display when display characteristics must be corrected upon an environmental change even if the image display and controller are located apart from each other in an image display control system having the controller for outputting a signal including at least a pair of video and acoustic signals, and at least one image display for receiving a signal from the controller and displaying a corresponding image. This invention adopts various sensors for detecting the environment of one of the controller and image display. In adjusting the display characteristics of the image display in accordance with the detection results of the sensors, the display characteristics of the image display are adjusted by either one of the controller and image display in accordance with an adjustment target.

Abstract: An image display device of the present invention is provided with a liquid crystal display panel for displaying an image in accordance with an input of a chrominance signal, a sensor for sensing light characteristics of external light, and a chrominance signal converter for converting a chrominance signal to be inputted into an image display section in accordance with an output of the sensor. The chrominance signal converter includes a target display color setting section for setting a color to display as an image agreeable with chromatic adaptation characteristics of human, according to the output of the sensor, and a color reproduction section for reproducing a target color set by the target display color setting section, by using three primary color with chromaticities suitable for the output of the sensor. The target display color setting section converts the chrominance signal into a chrominance signal of the target display color reproduced by the color reproduction section.

Abstract: In indication and image reproduction apparatus, the ambient brightness must be taken into account for an optimum reproduction quality. This requires an optical sensor, which is associated with additional technical outlay. The invention relates to a circuit which allows the ambient brightness to be determined by means of a sensor that is already present in the device, for the reception of data or control signals. In particular for apparatus appertaining to consumer electronics.

Abstract: An image having a large contrast and excellent visibility to the viewer is displayed on an image display device used in the presence of light. A black-display characteristic specifying means generates a black-display characteristic specifying data indicating the brightness of the external light reflected from the surface of an image display means, which is obtained by operating an external-light brightness specifying bar to be displayed on the image display means. A black-approximated data calculating means calculates, based on the black-display characteristic specifying data, a black-approximated data related to at least one of luminance, chromaticity and tristimulus values in displaying black with the image display means. On receipt of an image data and the black-approximated data, a black correction means calculates a black-corrected image data, and displays an image on the image display means based on the black-corrected image data.

Abstract: The invention relates to an apparatus for processing signals, comprising parameter control means for controlling parameters of said signals in response to manual adjustments by the user as well as automatically generated adjustments based on current ambient factors or properties of said signals. The apparatus according to the invention comprises indicator means for presenting a level indicator which is indicative of the combined result of the manual and automatic adjustments.

Abstract: To provide an environment-compliant image display system, a presentation system, an image processing method, and a program, a colored-light information processing section 140 is used to create XYZ values that take into account a visual environment, based on colored-light information (more precisely, RGB or XYZ tristimulus values) that has been measured by a colored-light sensor 60, and a profile management section 130 is used to correct the input-output profiles of the projector.

Abstract: A camera module forms digital images and measures an ambient light level. A device such as a digital camera, a telephone, or a PDA containing the camera module can set lighting levels of I/O systems such as keypads or displays according to the ambient light level to thereby save power or optimize functionality of the I/O systems. A dedicated sensor in the camera module or one or more selected sensors in the imaging array of the camera module can measure the ambient light level.

Abstract: An image display, includes a substrate; a light emitter formed on the substrate; and a photo-sensor formed on the substrate and optically coupled directly to the light emitter.

Abstract: An environment-compliant image display system, image processing method and information storage medium which can reproduce the same colors at different locations by absorbing any difference in the visual environment. In an individual environment, an image data is generated by absorbing any difference between a reference environment and the individual visual environment by a colored light information processing section 140, based on X, Y and Z values of an image in an image display area measured by a colored light sensor 60 as well as X, Y and Z values measured in the reference environment. A profile for projector input/output is corrected by a profile managing section 130 and then an image is projected by using an L/V drive section 190.

Abstract: Device and method for compensating a picture quality of a projection type display, the device including a screen for displaying a picture projected from outside of the screen, a video processing part for receiving, and converting an analog video signal into a digital video signal, and adjusting an offset and a gain thereof, for making the video signal displayable on the screen, a sensing part for sensing the video signal from the video processing part and projected to a region of the screen, a memory part for storing reference video information, and a microcomputer for projecting the reference video information stored at the memory part onto the screen through the video processing part according to a user's picture quality compensation command, or a preset algorithm, and controlling the video processing part so that a luminance and chromaticity of the picture are calculated according to an output of the sensing part, the luminance and the chromaticity of picture are compared to preset values, and a compensati

Abstract: An image processing system that shorten calibration time includes a storage section which stores darkroom-condition-measurement data obtained by measuring a display region on which a plurality of calibration images having different colors are displayed under a darkroom condition through a sensor; a measurement data generating section which generates supposed measurement data based on a viewing-environment-measurement data obtained by measuring one of the plurality of calibration images through the sensor under a viewing environment and the darkroom-condition-measurement data; a color gamut computing section which computes an area ratio between a color gamut based on the darkroom-condition-measurement data and a color gamut based on the supposed measurement data; and a correcting section which corrects an image correcting data to correct a hue and gray scale of an image using a logistic function with a parameter based on the area ratio and also corrects image information for displaying an image.

Abstract: An image processing apparatus is provided which includes an image input apparatus for inputting an image including an object. The image is input into a reproducing environment converting unit, which sets a desired illuminating environment on a monitor display screen in which the image is reproduced. The reproducing environment unit converts the image of the object by three-dimensionally moving and rotating the object in the set environment, and an image output apparatus displays and prints the converted image.

Abstract: The image display device includes a liquid crystal display device having a liquid crystal panel and a backlight and a backlight controller for allowing the backlight of the liquid crystal display device to be bright when environment light is bright and allowing the backlight to be dark when the environment light is dark such that light leak (minimum luminance) which is defined by an extinction ratio of liquid crystal will not grow more than a specified degree. The image display device enables displayed images to be really discernible regardless of brightness of environment light (surrounding light).

Abstract: A display brightness monitoring system associates a brightness level and an ambient light level with a user identifier. Ambient light signals are received from an ambient light sensor mounted in proximity of an electronic display. Brightness levels are received from a brightness control mechanism for user selection of a display brightness. The monitoring system collects brightness levels and associates them with one of the ambient light levels associated with a user identifier. Preferably, a plurality of brightness levels are collected for each ambient light level and are used to compute a preferred brightness level indicative of a user's preferred display brightness for a given ambient light level. The brightness levels may be statistically averaged for computation of the brightness level. A data structure for associating brightness levels with ambient light levels and associating ambient light levels with a user identifier may be used to segregate one user's brightness levels from those of another.

Abstract: A system and method of automatically selecting a vertical refresh rate for a video display monitor is disclosed. The system includes an ambient light frequency identifier and a vertical refresh rate selector. The ambient light frequency identifier is configured for capturing lightwaves from an ambient light source and for identifying a frequency of the lightwaves. The vertical refresh rate selector is configured for automatically selecting a vertical refresh rate for the video display monitor based on the identified ambient light frequency.

Abstract: A surrounding light judging method and a video compensation control apparatus which are capable of securing an optimum quality of picture by detecting a color signal near a video displaying instrument, judging a lighting environment from the detected color signal, and automatically correcting a video data in accordance with the judged lighting environment and a variation in the lighting environment.

Abstract: A light-emitting color display system is provided having an optical sensor system in which a plurality of photosensors are directed towards the light source of the light-emitting color display system to provide outputs proportional to the light energy associated with each color. A processing system responds to the outputs over time with the initial outputs and provides a mechanism to correct color changes in the display system. The color light-emitting display system has a second plurality of photosensors directed away from said light-emitting color display system for providing outputs related to the different illuminants and allowing compensation of the light-emitting color display system for the illuminants.

Abstract: A thin film transistor liquid crystal display (TFT-LCD) capable of adjusting its light source utilizes at least one thin film transistor (TFT) disposed in a peripheral region of a bottom substrate as a photo sensor for detecting ambient illumination. Then, a light source modulator can enhance, weaken, open or close the light source of the TFT-LCD to an optimal brightness level that depends on the ambient illumination spontaneously.

Abstract: An image display system, image processing method, and program that make it possible to reproduce the colors of an image more rapidly in accordance with the user's preferences. The image display system includes: a color gamut calculation section that calculates a target color gamut based on a target profile within a target profile storage section that was selected by the user, and also calculates a displayable color gamut based on a projector profile within a projector profile storage section and environmental information from a colored-light sensor that detects the visual environment; a matrix generation section that generates a conversion matrix according to the relationship between the target color gamut and the displayable color gamut; and a matrix converter section that uses the thus-generated conversion matrix to convert image information; whereby image information is converted and image is displayed.

Abstract: A wireless communication device (100) includes a display (120) having a backlight (124). A backlight controller (126) selectively enables the backlight (124) to minimize power consumption and conserve energy in a battery (132). In one embodiment, a receiver (110) receives a time-of-day message from a remote location to set a timer (122) with the current time-of-day. The current time-of-day is compared with a predetermined time-of-day and the backlight controller (126) enables and disables the backlight (124) at predetermined times-of-day. The wireless communication device (100) may also include a GPS receiver (128), to determine the location of the device. The backlight controller (126) can determine the sunrise or sunset times for the specific location. The GPS data may be used in combination with the time-of-day message. A photosensor (130) can detect ambient light levels and generate an electrical signal corresponding thereto.

Abstract: In a television set, image quality is adjusted in accordance with parameters calculated on the basis of adjustment values used in the past, depending on a feature of an image and an environmental status. A weight calculator determines a weight depending on the manner in which a user performs a volume control operation. A cumulative weight memory outputs a cumulative weight corresponding to the feature value. Output volume values used in past are stored in a volume value generator. The volume value generator calculates output volume values corresponding to a feature value on the basis of parameters indicating final adjustment values, the feature value, the weight, and the cumulative weight. The calculated volume values are stored in the volume value generator. Under the control of a system controller, the volume values stored in the volume value generator are output to a coefficient generator.

Abstract: The information processing apparatus equipped with a liquid crystal display apparatus that is usable in the face-to-face usage style. When the display direction is switched into the facing direction and in a normal usage state, the liquid crystal display apparatus exhibits an excellent visual recognizability and complicated operations are unnecessary. The image information, the picture direction of which has been inverted upside down, is outputted from the information processing unit 2 to the display unit 1 in such a manner as to be coupled with the picture direction change instructing member 3. At the same time, the luminance information at the time of the picture upside-down inversion, which has been set in advance into the luminance adjusting member 4, is supplied to the display unit 1 so as to change the luminance simultaneously with the picture inversion.

Abstract: In indication and image reproduction apparatus, the ambient brightness must be taken into account for an optimum reproduction quality. This requires an optical sensor, which is associated with additional technical outlay. The invention relates to a circuit which allows the ambient brightness to be determined by means of a sensor that is already present in the device, for the reception of data or control signals.

Abstract: A display system may include an identifier configured to identify an image display condition associated with the display of an image produced by the display system, an apparatus configured to produce a plurality of differently colored images, and a display device. The images have color characteristics based on image information and the identified display condition. Differently colored images may be directed along associated portions of an optical path. The display device may be coupled to the apparatus and may be configured to display a color image formed of the differently colored images.

Abstract: A method of producing a display image comprises receiving image information representing an image to be displayed, producing an image formed of a plurality of images of different colors, and projecting the produced image along an optical path. The differently colored images have color intensities related to energy applied to a light source. A level of energy is applied to the light source during production of the image of one color that is different than the level of energy applied to the light source during production of the image of another color.

Abstract: A display system is configured to produce a color image formed of a plurality of differently colored images and may include at least one light source that directs light along an optical path, and at least one filter having a given optical filter characteristic. The display system may be selectively operable in a first state in which the optical path does not pass through a first filter during production of the plurality of differently colored images to form a color image having a first optical characteristic, and in a second state in which the optical path passes through the first filter during production of the plurality of differently colored images to form a color image having a second optical characteristic different than the first optical characteristic.

Abstract: An intelligent luminance correction system is used in a vision system. The vision system has a video decoder, used to receive a video signal and decode the video signal into three basic components of red, green, and blue. A photodetector is used to detect the luminance of the current environment, so as to export a reference signal. A color correction circuit is used to receive the reference signal and the three component of RGB. The color correction circuit also stores a vision response curve at dark condition and a vision response curve at bright condition, so that the color correction circuit can determine one curve of the vision response curve at dark condition and a vision response curve at bright condition according to environment luminance indicated by the reference signal. The three components of RGB thereby are corrected individual. After correction, the color correction circuit exports the corrected three components of RGB to a display.

Abstract: In an illumination control method of the present invention, illumination of an appreciation space is controlled in association with an image displayed on an image display device so that a realism of the image displayed on a screen of the image display device can be enhanced, where an appreciator appreciating the image is in the appreciation space. More specifically, one or more light sources provided in the appreciation space is controlled so that at least one parameter of a level, a light color, a luminous intensity distribution, and a direction of illumination to the appreciation space is made substantially coincident with a corresponding parameter of a virtual image space imaginarily created from the image displayed on the image display device.

Abstract: An apparatus and method is provided for dynamically modifying both the luminance and contrast of an image as it is displayed on a display unit in response to changing lighting conditions. Sensors are utilized to continually measure the luminance of the light illuminating the display unit and the display surround luminance. Measurement signals generated by the light sensors are processed to provide display luminance and contrast adjustment control signals that gradually cause the adjustment of the display unit's luminance and contrast in response thereto. Continual adjustment of the luminance and contrast of a display unit according to changing lighting conditions such that the brightness and contrast perception of the displayed image remains constant under the varying conditions.

Abstract: To provide an environment-compliant image display system, image processing method, and information storage medium that enable correction of images within a shorter time, a Y value of color signals (Y3, x3, y3) measured by a color light sensor 60 and converted by an Y3x3y3 conversion section 143 is replaced with Y1, which is a Y value of an ideal environment, by a Y replacing section 142; color difference between the replaced color signals (Y1, x3, y3) and ideal color signals (Y1, x1, y1) is obtained by a color difference calculation section 145; and image display information is corrected by using that color difference (&Dgr;x, &Dgr;y).

Abstract: A portable terminal allows the user to flexibly and readily change an overlay output distribution for reproduced data in accordance with the user's taste and can automatically control the overlay output distribution in accordance with a surrounding environment. A setting means sets output parameters which are parameters related to reproduced data output for each reproduced data. A data output control means processes each of the reproduced data based on the output parameters set by the setting means and outputs the processed output data.

Abstract: When gamut mapping (hue restoration) defined by one Lab color space is applied in color matching under different reference white points, human vision perceives the hue as inconsistent. In view of this, input data which is dependent on a color space of an input device is converted by a first conversion LUT to color space data which is independent of any devices, based on a viewing condition at the time of viewing an input original. The device independent data is converted to data in the human color perception space by a forward converter, subjected to gamut mapping, and converted back to device independent data in the color space independent of any devices by an inverse converter, based on a viewing condition at the time of viewing an output original. Then, the device independent data is converted to output data in a color space which is dependent on an output device by a second conversion LUT.

Abstract: Device and method for compensating a picture quality of a projection type display, the device including a screen for displaying a picture projected from outside of the screen, a video processing part for receiving, and converting an analog video signal into a digital video signal, and adjusting an offset and a gain thereof, for making the video signal displayable on the screen, a sensing part for sensing the video signal from the video processing part and projected to a region of the screen, a memory part for storing reference video information, and a microcomputer for projecting the reference video information stored at the memory part onto the screen through the video processing part according to a user's picture quality compensation command, or a preset algorithm, and controlling the video processing part so that a luminance and chromaticity of the picture are calculated according to an output of the sensing part, the luminance and the chromaticity of picture are compared to preset values, and a compensati

Abstract: An apparatus and method is provided for dynamically modifying both the luminance and contrast of an image as it is displayed on a display unit in response to changing lighting conditions. Sensors are utilized to continually measure the luminance of the light illuminating the display unit and the display surround luminance. Measurement signals generated by the light sensors are processed to provide display luminance and contrast adjustment control signals that gradually cause the adjustment of the display unit's luminance and contrast in response thereto. Continual adjustment of the luminance and contrast of a display unit according to changing lighting conditions such that the brightness and contrast perception of the displayed image remains constant under the varying conditions.

Abstract: A portable information terminal apparatus measures the ambient illuminance and exercises illumination control over its display and manual input unit during a predetermined period. The appropriate length of this predetermined period is determined from various parameters including the ambient illuminance and the function(s) to be used by the portable information terminal apparatus. Illuminance measurements are subjected to various corrective computations to obtain proper illuminance decision values. These decision values are used to perform appropriate illumination control.

Abstract: When reception of an E-mail or browser data on a Web site from a network has been completed, a controller informs the user of the completion of the data reception by turning on the backlight of a display section or sounding a sounding device, on the basis of information set in an informing-operation-setup-table storage area, more specifically, on the basis of the ambient brightness detected by a sensor or a present time point detected by a timer.

Abstract: A high definition display unit which demodulates, decodes, and processes in relation to chroma and displays a television signal in which a PI (picture) signal and an SI (service information) signal are mixed. A changeover switch 13 connected to an image quality adjusting circuit in a video chroma processing circuit 7 is opened or closed according to an on-off signal S1, showing the superposed period of both signals detected by a decoder 4. If the above on-off signal S1 is on, the changeover switch 13 is opened and the adjustment of image quality is disabled. Therefore, SI display never disappears due to the adjustment of image quality, and the quality of an image can be also adjusted according to an ambient status. Other approaches are also disclosed from preventing image quality adjustment of at least portions of a displayed image containing an information image.

Abstract: An intelligent luminance correction system is used in a vision system. The vision system has a video decoder, used to receive a video signal and decode the video signal into three basic components of red, green, and blue. A photodetector is used to detect the luminance of the current environment, so as to export a reference signal. A color correction circuit is used to receive the reference signal and the three component of RGB. The color correction circuit also stores a vision response curve at dark condition and a vision response curve at bright condition, so that the color correction circuit can determine one curve of the vision response curve at dark condition and a vision response curve at bright condition according to environment luminance indicated by the reference signal. The three components of RGB thereby are corrected individual. After correction, the color correction circuit exports the corrected three components of RGB to a display.

Abstract: An image processor includes a determination unit which determines an adaptation ratio of a reference white color value with respect to at least two white color values. Also included are a calculation unit which calculates a reference white color value in accordance with the determined adaptation ratio, and a conversion unit which converts an image signal in accordance with the calculated reference white color value.

Abstract: A multi-vision system includes chromaticity sensors for performing colorimetry of a plurality of display units. From colorimetry results obtained from the chromaticity sensors, a color conversion coefficient calculation unit inside a color calibration unit calculates the color conversion coefficient that is characteristic of each display unit. Calculated color conversion coefficients are stored in a color processing unit. The color calibration for this multi-vision system displays representing colors without a color conversion, and from colorimetry results of the representing colors for all the display units, a target color is decided automatically. For all display units, the color conversion coefficients are automatically calculated so that the representing colors are able to be displayed as a target color.