Abstract: A video signal processing circuit includes: a control unit that calculates a luminance integrated value on the basis of an input video signal and performs luminance control for the video signal on the basis of the calculated luminance integrated value, wherein the control unit calculates the luminance integrated value at a period shorter than time equivalent to one frame.

Abstract: An image display system is constituted by a server and a client apparatus. The server includes a storage unit that stores a plurality of illumination spectrum data after associating the data with values of adjustment parameters, an acquisition unit that acquires the present set value of an adjustment parameter of the client apparatus, a selection unit that selects, from among a plurality of illumination spectrum data stored in the storage unit, illumination spectrum data with a smallest difference between a value of the corresponding adjustment parameter and a value of the adjustment parameter acquired by the acquisition unit, a generation unit that generates image data representing appearance of an image pick-up object under illumination corresponding to the illumination spectrum data selected by the selection unit, and a delivery unit that delivers image data generated by the generation unit to the client apparatus.

Abstract: Provided is a display device including a setting condition acquisition unit for obtaining various conditions for adjusting a gain of a video-signal, a current-brightness table calculation unit that calculates a table representing a relationship between an average brightness and a gain of a video-signal, and that calculates the table capable of setting a peak-brightness and power consumption of the video-signal independently, based on the various conditions acquired by the setting condition acquisition unit, a video-average brightness conversion block that calculates average- brightness of the video-signal input for each frame, a current-brightness control table that calculates a gain of the video-signal from the table based on the average-brightness calculated above, a video gain block that adjusts the video-signal using the gain calculated above, and a display panel that includes a plurality of pixels that emit light in response to a video-signal and displays a video based on the video-signal adjusted above.

Abstract: A method of producing a color image using a display comprised of pixels comprising red, green and blue primary color subpixels. The method comprises reducing the color gamut and increasing the brightness of the image relative to a base level, decreasing power to the display to reduce the brightness of the image, restoring color to the image to approximately the base level by modifying image pixel data using a three-dimensional lookup table to produce output image pixel data, and communicating the output image pixel data to the display. The display may be an LCD display, an LED display, an OLED display, a plasma display, and a DMD projector. Reducing the color gamut and increasing the brightness of the image may be accomplished by adding white to the image. The white may be added adaptively according to an algorithm by which the amount of white added decreases with increasing color saturation.

Abstract: The purpose of the present invention is to increase a feeling of brightness and express a video with high contrast by detecting a part of a video signal that emits light, enhancing the display luminance of the light-emitting part, and displaying said part. A light emission detection portion (1) uses a prescribed feature quantity related to the brightness of an input video signal, predetermines the light emission quantity for the video signal on the basis of the relationship with the feature quantity, and detects the light emission quantity for each input video signal frame from the feature quantity. A backlight luminance stretch portion (3) stretches the light source luminance of the backlight according to the light emission quantity detected. A video signal luminance stretch portion (6) stretches the video signal according to the light emission quantity or the luminance distribution of the input video signal.

Abstract: There is provided a liquid crystal display, including: a backlight having a plurality of light sources; a liquid crystal panel configured to display a video picture in a plurality of illumination regions corresponding to the light sources; an intensity value calculator calculating representative intensity values of the illumination regions based on an input video signal; a weight calculator performing a smoothing process on the representative intensity values by using first weights and to calculate second weights of the illumination regions having values which become larger as smoothed values of the representative intensity values becomes smaller than the representative intensity values; an intensity value corrector correcting the representative intensity values of the illumination regions based on the second weights and performe a smoothing process on corrected intensity values by using the first weights to obtain light source intensity values of the light sources.

Abstract: A demodulator of a video demodulation device includes an analog-to-digital converter converting an analog IF signal into a digital IF signal, a luminance gain adjuster performing gain adjustment of a luminance component included in the digital IF signal such that a maximum of the luminance component within a predetermined period becomes equal to a predetermined reference value, and a synchronization corrector receiving as input a result of the gain adjustment, correcting a signal corresponding to a signaling period of the horizontal synchronizing signal, and outputting the signal as a CVBS signal. The synchronization corrector outputs, as the CVBS signal, a composite signal containing the luminance component and a color component included in the gain adjustment result when the composite signal is smaller than the reference value, or the reference value when the composite signal is equal to or greater than the reference value.

Abstract: A method for adapting color appearance of a display (200) for low luminance conditions includes operating a projection (100) to display images on a display surface (30); detecting ambient light conditions and displayed image brightness; determining low luminance conditions based on the detected ambient light conditions and the detected display brightness; determining changes in color appearance to be applied to the displayed images based on the low luminance conditions, a model of photopic vision of the human eye, and a model of mesopic vision of the human eye; and applying the determined changes in the color appearance to image data using an image processor (130) that alters the image data for the projected images.

Abstract: A TV or monitor with a sensor sensing radiation or light from the surroundings, where a controlling unit, on the basis of the sensed radiation or parameters of a video signal, frame rate converts an original video signal to an up converted video signal by determining additional images for the video signal, the additional images being determined on the basis of the determined radiation/light or parameter of the video signal in order to relatively reduce frame rate conversion generated artifacts when the radiation or light intensity is higher.

Abstract: A picture control method and an image processing apparatus thereof are provided. The method includes setting a picture control mode; setting a picture control value in response to the picture control mode; and sensing a change of the picture control value; restoring the picture control value to a previous value if the change of the picture control value is maintained in excess of a certain amount of time. The image processing apparatus includes a picture controller which sets a mode and a value in response to the mode; a memory which stores an initial value of the value; and a controller which senses a change of the value and controls the picture controller to maintain the change of the value for a certain amount of time, and if the change of the value is maintained in excess of the certain amount of time, retrieves the initial value of the value, and controls the picture controller to change the picture control value to a previously unchanged value.

Abstract: It is determined whether or not an input image is an image converted from an image with a relatively low resolution based on one frame of an image. A resolution determination device includes: an edge strength calculator configured to obtain an edge strength of a pixel included in an input image based on luminance of the pixel and luminance of a pixel adjacent to the pixel, for each of a plurality of pixels included in the input image; and a resolution determiner configured to determine whether or not the input image is an image upconverted from an image with a predetermined resolution or less, based on distribution of the edge strengths.

Abstract: A method of processing a digital image, said image comprising a plurality of pixels, the method comprising a computation step (S1) wherein a histogram of the distribution of the number of pixels of the image as a function of their luminance is computed, a step (S2) for lightening the image based on said histogram comprising a subdivision (S20) of the pixels of the image into a first set of pixels having luminance values between a low threshold and a high threshold and into a second set of pixels having luminance values greater than said high threshold, a first luminance processing operation (S21) on the pixels of the first set of pixels and a second luminance processing operation (S22) on the pixels of the second set of pixels, the two luminance processing operations (S21, S22) being different, the first processing operation (S21) comprising an increase in the luminance of the pixels of the image.

Abstract: A patient monitoring/defibrillation instrument displays patient vital signs in numeric form or as graphical waveform traces. Under normal room lighting conditions the numeric and waveform information is displayed in color against a black or gray background. When the patient monitor is operated outside or in bright light, the user has the option to select a color map for display of the patient vital signs information in a highly contrasting manner such as black numeric or waveform information against a bright background such as yellow. The high contrast display, while being objectionable in most indoor settings, has been found to comfortably and effectively display the monitored information in sunlight without the need to increase power to the display.

Abstract: A display apparatus, which adjusts a luminance value of an image, and a method for driving the same are disclosed. The display apparatus includes a first image conversion unit that converts first image data into a plurality of second image data each including a luminance value, a luminance analysis unit that determines quantities of luminance values of the second image data, and determines a distribution of the luminance values, and a luminance adjustment unit that adjusts the respective luminance values of the second image data based on the quantities.

Abstract: An image processing apparatus sequentially provides a display device with a plurality of image output including a first image, a second image set to become at least a part of an image that is not correlated with the first image when luminance values of pixels of the first image are added to it, and a third image set to become an image, which is obtained by adding luminance values of pixels of all pluralities of images, higher spatial-frequency components than those of the first image. The image processing apparatus has an optical shutter control unit for controlling an optical shutter provided between the display device and a viewer to make the shutter be in a light transmission state while a part of or all the first image is displayed, and in a light interception state while other images are displayed.

Abstract: 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.

Abstract: An image processing device (100) includes: a luminance distribution information preparation section (110) for preparing a luminance histogram in which each luminance range serves as a class, by counting the number of pixels belonging to each luminance range; a weight correction section (120) for generating, for each luminance range, a weighting value which is proportional to a corresponding class value; and an image processing section (140) for correcting a luminance value of each pixel so that a difference between a maximum luminance value and a minimum luminance value in the luminance range is determined by an increasing function with respect to both (i) a frequency of the luminance range and (ii) a weighting value of the luminance range.

Abstract: This backlight device 12 of the present invention includes: a cold cathode fluorescent tube; a chassis 14 that houses at least the cold cathode fluorescent tube on a front surface 14a1 side of a bottom plate 14a of the chassis; and a circuit substrate 32 having a front surface 32a on which electronic components 38a and 38b are disposed, the front surface 32a facing a rear surface 14a2 of the bottom plate 14a of the chassis 14. The heat generated from the electronic components 38a and 38b circulates towards the chassis 14 with ease, and therefore the heat generated from the electronic components 38a and 38b on the circuit substrate 32 can be effectively dissipated by the bottom plate 14a of the chassis 14.

Abstract: A device for image processing includes: a video signal receiver, for receiving at least one video signal; a color engine, comprising a local adjusting unit, for dividing pixels of an image frame of the at least one video signal into multiple pixel groups according to luminance factors of the pixels in HSI color space and adjusting the luminance factors of a specific pixel group of the pixel groups having luminance factors in a predetermined range that is a part of a full range of luminance factor by moving the pixels of the specific pixel group from a region to another region of the HSI color space without changing color axes of the HSI color space.

Abstract: A white balance method for a display image is disclosed. The steps of the method includes: measuring gray levels of a basic and reference colors based on a plurality of color temperatures; obtaining reference color gains according to average values of the gray level of the reference and basic colors and a ratio according to the reference color gains corresponding to each of the color temperatures; dividing the display image into a plurality of blocks, and obtaining a reference color gain of each of blocks according to the average values of the gray levels of reference and basic colors, and obtaining a block ratio of each of blocks; generating a selected number corresponding to each of the color temperature according to the ratios and the block ratios; selecting the basic and reference color gains of one of the color temperatures for executing white balance to the display image.

Abstract: The color gamut of display devices like digital projectors and digital displays is expanded by incorporating additional passband filters into the optical path of the devices to produce presentations of color components in two different color gamuts. The composite visual effect of the two presentations is a presentation in an expanded color gamut. Special considerations in the modulation of color components of the image can reduce variations in color and brightness, which can otherwise manifest themselves as flicker.

Abstract: In embodiments of power saving field sequential color (FSC), an illumination source illuminates pixels of a displayable image by sequentially generating RGB (red, green, blue) components of a pixel in a timed sequence of field sequential color. The pixels of a displayable image may also include a white component derived from the RGB components. An illumination reduction algorithm is implemented to determine the highest RGB (or RGBW) components from any of the pixels of the displayable image. The highest RGB (or RGBW) components can be determined from any combination of the same or different pixels of the displayable image. The illumination reduction algorithm then divides each of the highest RGB (or RGBW) components by a maximum brightness value to generate respective RGB (or RGBW) component factors. A display controller then processes each pixel of the displayable image for display according to the RGB (or RGBW) component factors.

Abstract: A method of displaying an image that includes, in a display having a pixel comprising red, green, blue, and white sub-pixels, receiving data for an image, the image data comprising a first red value corresponding to a brightness of the red sub-pixel, a first green value corresponding to a brightness of the green sub-pixel, a first blue value corresponding to a brightness of the blue sub-pixel, and a first white value corresponding to a brightness of the white sub-pixel. A maximum value is determined from among the first red value, the first green value, and the first blue value, and brightnesses are set corresponding to the values other than the maximum value at quantities generally inversely proportional to the maximum value.

Abstract: A method of improving an image quality of a video signal, which is supplied on a frame-by-frame basis, includes extracting low frequency components from a video signal of an n-th frame, where n is a natural number excluding zero, subtracting the extracted low frequency components from a video signal of an (n+m)th frame to produce high frequency components, where no is a natural number excluding zero, and adding the produced high frequency components to the video signal of the (n+m)th frame. The extracted low frequency components include a horizontal component and a vertical component.

Abstract: According to the present invention, there is provided an image display device for displaying acquired image information including: an information acquisition section for acquiring image information and information associated with the image information by communication from an external device; an adjustment section for executing image quality adjustment processing in relation to display of the image information; and a setting section for setting details of the image quality adjustment processing, based on the information. Therefore, details of the image quality adjustment processing may easily be set automatically in an appropriate manner.

Abstract: An image processing apparatus includes a calculation to calculate a compression gain that is applied to a low-frequency component of an input image and an amplification gain that is applied to a high-frequency component of the input image, a generation to generate a display image in which a pixel value of a pixel of the input image is corrected based on the compression gain and the amplification gain calculated by the calculation unit, and a display to display the display image.

Abstract: A display apparatus according to this invention performs control so as to reduce the difference between image data input to a display unit and an image which is displayed on a display surface and acquired by an acquisition unit, based on the image data and the image.

Abstract: A projector apparatus includes: a projection unit that projects an image onto a projection surface; a reflectance distribution detection unit that detects a reflectance distribution at the projection surface; a density distribution detection unit that detects a density distribution of a base pattern at the projection surface; a smoothing unit that smooths the reflectance distribution and the density distribution; an input unit that inputs image data; a correction unit that corrects the input image data based upon the smoothed reflectance distribution, the smoothed density distribution and input/output characteristics of the projection unit; and a control unit that controls the projection unit so as to project the image based upon the image data having been corrected.

Abstract: Method and apparatus for converting a first video signal into a second video signal, including a succession of frames wherein each includes a plurality of points having a luminance. The points of the second video signal can be displayed on corresponding pixels of a display device. The method includes calculating the luminance of a point of a current frame of the second video signal by a weighted sum of a luminance of a corresponding point of a current frame of the first video signal and of a luminance of a corresponding point of a previously stored frame, and storing the luminance of the corresponding point of the current frame of the first video signal. The calculation is repeated for all the points of the current frame of the second video signal, and the storage is repeated for all the points of the current frame of the first video signal.

Abstract: An object of the present invention is to obtain a display device having excellent display quality by appropriately modifying the chromaticity of images. In this display device, a correction processing part (CPU 30) determines a first chromaticity change amount stored in memory (31) on the basis of a first cumulative usage amount, which is the cumulative usage amount of an LED (17) up to a present time, the cumulative value having been measured by a counter (32), and the correction processing part also determines a second chromaticity change amount stored in the memory (31) on the basis of a second cumulative usage amount, which is the cumulative usage amount of the LED (17) up to a time when the chromaticity of a pixel is adjusted by a chromaticity adjusting part (CPU 30), the cumulative value having been measured by the counter (32).

Abstract: Disclosed embodiments relate to techniques for enhancing luminance resolution in a backlight unit. A backlight unit may have light-emitting diode (LED) light sources arranged in strings. In one embodiment, a backlight controller provides enhanced luminance resolution by drive each LED string at either first or second consecutive luminance values corresponding to first and second duty cycles of a pulse width modulation (PWM) signal. The outputs of the LED strings are optically mixed to achieve intermediate luminance values between the first and second luminance values.

Abstract: An image processing apparatus according to the present invention extracts a characteristic value of a luminance in relation to respective fields of an input video, and determines the presence of a scene change between adjacent fields. A gamma curve is then generated on the basis of the magnitude of the characteristic value. When a difference in the characteristic value between fields is larger than a predetermined value and a scene change does not exist, the gamma curve to be applied to a subsequent field is modified such that the correction characteristic of the gamma curve does not vary rapidly. The luminance is then corrected using the modified gamma curve.

Abstract: A brightness adjusting device of the present invention includes: a brightness setting section that accepts input of brightness change information that is an instruction to change a brightness setting value; a brightness adjusting section that performs brightness adjustment by either one of a first brightness adjusting unit and a second brightness adjusting unit having different characteristics from each other, in accordance with the instruction that is input from the brightness setting section; a determining section that determines whether or not the brightness adjustment of the brightness adjusting section switches from the first brightness adjusting unit to the second brightness adjusting unit; and an output section that outputs an alarm when the brightness adjustment of the brightness adjusting section is determined to switch from the first brightness adjusting unit to the second brightness adjusting unit based on a determination result of the determining section.

Abstract: A system and method for dynamically changing the display parameters of a display device. The system includes a server that obtains information about display content, environmental factors and user preferences affecting the display device. This information is used to generate initial display parameters which can be downloaded to the display device. The display device can use the initial display parameters to select final display parameters based upon sensed real-time information about the display device, the user preferences and environmental factors affecting the display device.

Abstract: A monitoring apparatus includes a detection circuit, a filter circuit, an amplifying circuit, a regulation circuit, a delay and charging circuit, and a driving circuit. The detection circuit receives a video signal, and performs an operation to obtain an image signal from the video signal. The filter circuit obtains an average intensity of a luminance signal corresponding to the image signal. The delay and charging circuit charges an input capacitor when receiving a low level regulated signal from the amplifying circuit. The driving circuit activates an alarm when a charging voltage of the chargeable capacitor exceeds a predetermined value.

Abstract: An entertainment system for a vehicle, including a media player and a control panel having an option that allows a user to select either a first communication mode or a second communication mode, wherein the first communication mode sets the entertainment system to respond to a transmitted first set of codes and the second communication mode sets the entertainment system to respond to a transmitted second set of codes.

Abstract: A broadcast receiving device includes a receiving component, a comparison component and a drive signal generating component. The receiving component is configured to receive broadcast waves and extract a video signal from the broadcast waves. The comparison component is configured to compare quality of the video signal with a first level. The drive signal generating component is configured to generate a drive signal for displaying video on a display based on the video signal such that at least one of brightness and contrast of the video is reduced by a certain amount when the quality of the video signal is lower than the first level.

Abstract: To provide a video display apparatus and an afterimage correcting method for solving the problem of image quality degradation. Removing unit 2 removes DC components from the video signal received by input terminal 1. Integrating unit 3 integrates the video signal with DC components removed by removing unit 2 to generate an integration signal. Subtracting unit 4 subtracts the integration signal generated by integrating unit 3, from the video signal received by input terminal 1.

Abstract: A first video picture is translated based upon a first translation matrix to adjust a contrast of the first video image. A second translation matrix is determined based upon a first histogram of a second video picture. A third translation matrix is determined based upon the first translation matrix and the second translation matrix, and the video picture is translated based upon the third translation matrix. The translation matrix can be determined using a histogram that has been adjusted using a clipped histogram equalization technique.

Abstract: Image data is transformed for display on a target display. A sigmoidal transfer function provides a free parameter controlling min-tone contrast. The transfer function may be dynamically adjusted to accommodate changing ambient lighting conditions. The transformation may be selected so as to automatically adapt image data for display on a target display in a way that substantially preserves creative intent embodied in the image data. The image data may be video data.

Abstract: In a microdisplay TV with dynamic iris control, interpolation is used to undertake 3D gamma adjustment of the display for intermediate brightness levels.

Abstract: An image display apparatus includes a filter which obtains low-frequency image data from input image data, a multiplier which multiplies the low-frequency image data obtained by the filter by a predetermined ratio, and a subtracter which subtracts, from the input image data, the low-frequency image data multiplied by the predetermined ratio to obtain high-frequency image data. In addition, a display control unit displays, in alternate order, the low-frequency image data and the high-frequency image data, and an adjustment unit adjusts the predetermined ratio so as to set a flicker of an image displayed by the display control unit to a predetermined level.

Abstract: According to one embodiment, An image processing method includes: estimating a composition of image data, for each piece of image data received in a temporal order to calculate a reliability indicating likelihood of the composition estimated; determining whether the composition estimated is different from a composition previously used which is a composition to be used for image data previously received and whether the reliability is equal to or higher than a predetermined first threshold, and updating a composition to be used to the estimated composition when the estimated composition is different from the composition previously used and compositions having the reliability equal to or higher than the first threshold are received successively equal to or more than a predetermined first number of times; and calculating an intensity at which a sharpening process of the image data is performed based on the composition to be used

Abstract: A brightness adjuster generating an image output to a panel, which displays the corresponding image according to the image output. The image output includes a red output signal, a green output signal, and a blue output signal. The brightness adjuster includes a determination unit, a calculation unit, and a digital to analog converting unit. The determination unit determines a main input signal according to a red input signal, a green input signal, and a blue input signal. The calculation unit adjusts the red, the green, and the blue input signals according to the main input signal. The digital to analog converting unit transforms the adjusted red, the adjusted green, and the adjusted blue input signals into the red, the green, and the blue output signals.

Abstract: Disclosed is a display device and method for automatically adjusting the brightness of an image according to the image mode. The display device includes: a determination unit for obtaining information relating to an input image and determining the image mode of the input image on the basis of the obtained information; a converting unit for receiving the input image and automatically adjusting the brightness of the input image according to the image mode determined by the determination unit; and a display unit for displaying the image outputted from the converting unit. Accordingly, the image mode of an image is determined, and the brightness of the image is automatically adjusted, and in particular, the brightness of the image in 3D mode is adjusted automatically so that the user may watch a 3D image with a high level of satisfaction without additional settings.

Abstract: Specific image quality adjustment of an image is performed according to a setting made by a user, and contrast compensation is performed such that a brightness is kept unchanged at the center of a specific color region larger than a predetermined size, regardless of the setting of the image quality adjustment. The image quality adjustment is performed by selecting one of a plurality of filters with different frequency characteristics according to the setting of the image quality adjustment, and then performing filter processing on the image by using the selected filter. The contrast compensation is performed upon the image that has undergone the filter processing, by using a contrast compensation value related to the selected filter.

Abstract: Brightness expression without solid white pattern is enabled, and video expression with an improved black level is achieved. A distortion module (5) reduces the luminance of a backlight source according to the histogram of the video signal so that the contrast may be a predetermined target one. A configuration design unit (13) sets the gain according to the luminance level (BLreduced) of the backlight source selected by the distortion module (5). When setting the gain, the luminance level (BLref) for reference of the backlight source preset according to the video feature value is referenced. If the video feature value meets a predetermined condition, the input video signal is always amplified with the gain. If not, depending on the relation between the BLreduced and the BLref, the input video signal is amplified or not.

Abstract: Display functions in an electronic device may comprise combining runtime color adjustments with brightness adjustments triggered by ambient light detection. Light sensors may be utilized to detect ambient lighting conditions, which may cause adjustment of brightness level applicable to a display (or screen) of the electronic device. The adjustment of brightness level may then be combined with adjustment of contrast level that may also be applicable to display functions. In this regard, a particular contrast level may be selected based on the detected ambient lighting conditions—e.g., by mapping various contrast levels to preconfigured ambient lighting levels. The contrast adjustment may comprise adjusting colors and/or sharpness. Using contrast adjustments, in conjunction with the brightness adjustments, may allow for achieving the same levels of readability with less brightness, and/or for increased readability with the same brightness.

Abstract: A method of reducing power consumption in a liquid crystal display illuminated by a backlight device includes dimming the backlight and adjusting the intensity of the image to compensate for the dimmed backlight. A dimming factor for the backlight is based on a clipping point determining from the pixel intensity distribution of the image signal. The intensity of the image is adjusted based on the dimming factor, wherein a first tone mapping function is used to adjust pixel intensities below an intensity threshold and a second tone mapping function is used to adjust pixel intensities above the intensity threshold.

Abstract: A moving image processing apparatus includes a brightness information acquisition unit configured to acquire, from an input video signal, brightness information indicating brightness of the video signal, an illumination information acquisition unit configured to acquire illumination information about an environment of the moving image processing apparatus, an adaptation coefficient calculation unit configured to calculate an adaptation coefficient for an observer based on brightness when the brightness indicated by the brightness information is less than a first threshold and the brightness indicated by the illumination information is less than a second threshold, a correction coefficient calculation unit configured to calculate a correction coefficient to be used for image correction of the video signal based on the adaptation coefficient calculated by the adaptation coefficient calculation unit, and an image correction unit configured to perform image correction on the video signal using the correction coef