291results about How to "Prevent image degradation" patented technology

A liquid crystal display apparatus (1) wherein the shift registers of a source driver (4) are configured by use of asynchronous RS flip-flops in which an active input to a set input terminal has a higher priority than an active input to a reset terminal. In a second mode of operation, first and second clock signals and a start pulse are fixed at high levels, thereby performing discharges from all the pixels (PIX) of a liquid crystal panel (2).

Provided is an image display device, more particularly, an apparatus and method that can reduce power consumption and prevent image characteristics from being degraded in an image display device using a multicolor light source. The image display device includes a histogram analysis unit calculating a parameter representative of an input image on the basis of a histogram of the input image, a model selection unit analyzing the parameter and selecting a representative model including the input image among a plurality of representative models, a luminance reduction amount calculation unit calculating a luminance reduction amount for each color light source of the input image on the basis of a maximum luminance reduction rate corresponding to the selected model, a power reduction amount calculation unit calculating a power reduction amount for each color light source according to the luminance reduction amount on the basis of a power characteristic of each color light source, and a power control unit supplying power reduced by the power reduction amount to each color light source.

An image encoding method according to the present invention calculates first difference information of an encoding target block and second difference information of an adjacent block, calculates a difference between the first difference information and the second difference information, and uses an intra mode only for blocks where a residual image noise occurs by selecting the intra mode when the difference is larger than a predetermined threshold, and selecting an inter mode when the difference is smaller than the predetermined threshold.

An imaging device of the present invention operates with supply of power from a main power supply, and comprises an imaging section having an image sensor for forming a subject image and outputting image data, a variable voltage conversion section, supplied with power from the main power supply, for converting to a designated voltage based on control signals, and outputting the designated voltage, a constant voltage section that receives output of the variable voltage conversion section and supplies a constant voltage signal to the image sensor, a noise level prediction section for predicting and outputting a noise level of image data of the image sensor, and a control section for calculating a voltage value input to the constant voltage section in accordance with output from the noise level prediction section, and designating an output voltage to the variable voltage conversion section.

An image processing method of producing visual image-referred data by conducting an image processing to optimize for viewing the visual on an output medium by utilizing a color appearance model, comprises an inputting process to input a user's editing instruction; a reading process to read scene-referred raw data for each editing instruction of an user inputted in the inputting process; and a gamut adjusting process to conduct a gamut mapping for each output medium by converting the read scene-referred raw data in accordance with the user's editing instruction by utilizing a color appearance model.

To suppress deterioration of quality of a still image displayed with a reduced refresh rate. A liquid crystal display device includes a display portion that is controlled by a driver circuit and includes normally white mode (or normally black mode) liquid crystals, and a timing controller for controlling the driver circuit. The timing controller is supplied with an image signal for displaying a moving image and an image signal for displaying a still image. The absolute value of a voltage applied to the liquid crystals in order to express black (or white) in an image corresponding to the image signal for displaying the still image is larger than that of a voltage applied to the liquid crystals in order to express black (or white) in an image corresponding to the image signal for displaying the moving image.

It is an object of the present invention to provide a solid-state imaging device capable of operating at high-speed, and suppressing the deterioration of image quality caused by coupling. A solid-state imaging device according to the present invention includes: pixels arranged in rows and columns; color filters each of which is arranged on a light incidence plane of a corresponding one of the pixels, each of the color filters being one of at least two colors; and column signal lines provided for each of the columns of the pixels, and each of which transmits the signals from the pixels in a column direction, in which one of the color filters is arranged on one of the pixels connected to the column signal line, and is of a same color as another one of the color filters arranged on another one of the pixels connected to the column signal line.

A deblocking filtering processor includes a first deblocking filtering section provided with a typical filter intensity calculation section and a typical filter section. The typical filter intensity calculation section selects a predetermined pixel line among a plurality of pixel lines crossing a block boundary as a typical pixel line for decoded image data of a moving image that are coded in units of blocks, and performs a filter intensity calculation to obtain a typical filter intensity on the basis of pixel values included in the typical pixel line. The typical filter section provides smoothing for pixel values included in the plurality of pixel lines on the basis of the typical filter intensity.

An image display apparatus includes a dimming value determination circuit for determining a dimming value of a backlight based on an input image signal, an image signal compensation circuit for compensating the input image signal supplied to a liquid crystal panel in accordance with the dimming value, and a backlight drive circuit for driving and controlling the backlight in accordance with the dimming value. When the light emitting luminance of the present frame of the backlight increases relative to the light emitting luminance of the previous frame, the backlight drive circuit delays the timing for applying the dimming value of the present frame. This makes it possible to reduce power consumption of the backlight by suppressing deterioration in the image quality in spite of the sharp change in the display image luminance.

An image projection apparatus adjusting a whit balance in consideration of temperatures and light levels of LEDs and a white balance adjustment method thereof. The image projection apparatus comprises a light source unit sequentially emitting lights generated by a red (R)-light emitting element, a green (G)-light emitting element, and a blue (B)-light emitting element. Light levels of the R-light emitting element, the G-light emitting element and the B-light emitting element change depending on changes in temperature. An image generation unit generates an image using the lights sequentially emitted from the light source unit and projects the image. A driving unit drives the light source unit and the image generation unit. A temperature sensor measures a temperature of the light source unit. A light sensor measures levels of light generated by the R-light emitting element, the G-light emitting element, and the B-light emitting element. A controller controls a driving operation of the driving unit based on the levels of light measured by the light sensor if the temperature of the light source unit measured by the temperature sensor exceeds a threshold, and adjusts a white balance of the image projected from the image generation unit. Accordingly, even if the temperatures of the LEDs increase due to a prolonged use of the image projection apparatus and thus light levels are deviated from a reference value, a white balance of a projected image is optimally adjusted. As a result, there is no image degradation and an optimal image can be provided to a user.

The droplet deposition position error measurement method, comprises the steps of: ejecting liquid droplets from a liquid ejection head including a plurality of liquid droplet ejection ports in such a manner that the liquid droplets are deposited on a recording medium; determining an amount of a droplet deposition position error with respect to an ideal droplet deposition position on a recording surface of the recording medium, according to a droplet deposition result obtained from the liquid droplets on the recording medium; separating a first error component caused by an error in a relative position between the liquid ejection head and the recording medium, and a second error component caused by an error in an ejection direction of each of the liquid droplet ejection ports, from the determined amount of the droplet deposition position error; and obtaining error information relating to at least one of the first and second error components.

An image sensing apparatus having an electronic shutter for controlling the charge accumulation time of an image sensing element and a mechanical shutter for releasing/shielding an optical path to the image sensing element includes an electronic shutter mode of controlling the image sensing time mainly by the electronic shutter and a mechanical shutter mode of controlling the image sensing time mainly by the mechanical shutter. In the electronic shutter mode, the operations of the electronic and mechanical shutters are controlled to overlap each other, and a charge reading period of the image sensing element and part of a release operation period of the mechanical shutter are controlled to overlap each other.

An image capturing apparatus includes an image sensor, a switching unit which switches between the first read mode in which pixel signals within the first range are read out by decreasing the number of pixel signals at the first reduction ratio, and the second read mode in which pixel signals within the second range narrower than the first range are read out without reducing the pixel signals or by decreasing the number of pixel signals at the second reduction ratio lower than the first reduction ratio, and a control unit which controls the switching unit to switch between the first read mode and the second read mode in accordance with the enlargement ratio of the electronic zoom. The control unit controls to change, in accordance with whether the electronic zoom operates toward the telephoto side or wide-angled side, the zoom enlargement ratio for switching a read mode.

An image processing device configured to be installed in a vehicle includes an image acquirer, an image selector, a first luminance adjuster, a synthetic image generator, and an image provider. The image acquirer acquires camera images captured by cameras provided on the vehicle. The image selector selects one of the camera images as a representative image based on luminances of the camera images. The first luminance adjuster adjusts a luminance of at least one of the other camera images based on a luminance of the representative image. The synthetic image generator generates a synthetic image showing a periphery of the vehicle, based on the representative image and the other camera images the luminance of at least one of which has been adjusted by the first adjuster. The image provider outputs, to a display device installed in the vehicle, information corresponding to the synthetic image.

The reversible thermosensitive recording medium according to the present invention comprises a support, a thermosensitive layer and a protective layer in order, the thermosensitive layer comprises an electron-donating coloring compound and an electron-accepting compound and reversibly changes the color depending on temperatures, and the protective layer comprises a reactive heterocyclic compound, and inorganic fine particles of which surface is at least partially treated into hydrophobic, alternatively the protective layer comprises inorganic fine particles of which number-average particle size is 100 nm or less and of which surface is at least partially coated with organic silane compounds.

An image processing apparatus comprising image capturing means for capturing a plurality of images, adjacent ones of which partially overlap with each other, overlap region determining means for determining an overlap region, first region determining means for determining a first region within the overlap region determined, first pixel value determining means for determining a pixel value in the first region based on a pixel value of one of the two adjacent images, second pixel value determining means for determining a pixel value in a second region within the overlap region based on respective pixel values of the two adjacent images, and image joining means for joining the two adjacent images with each other by utilizing the determined pixel value in the first region and the determined pixel value in the second region as pixel values in respective regions of the overlap region.

The present invention aims to provide a transparent electromagnetic wave shield member, which is free from a moirè phenomenon which could not be solved by the prior art, and in which an excellent electromagnetic wave shielding properties and a sufficient total light transmittance based on an appropriate network structure are compatible, and a method for manufacturing the same.

The transparent electromagnetic wave shield member of the present invention is a transparent electromagnetic wave shield member in which a metal layer of an electroconductive metal network structure having a geometrical shape is formed on a transparent substrate, and which is characterized in that a spacing of said network structure is 200 μm or less, an opening ratio of the network structure is 84% or more, and in addition, a thickness of the electroconductive metal layer is 2 μm or less.

Furthermore, the method for manufacturing such transparent electromagnetic wave shield member is a method for manufacturing a transparent electromagnetic wave shield member in which a metal layer of a network structure having a geometrical shape is formed on a transparent substrate, which is characterized in that a metal layer of a thickness of 2 μm or less is provided on a transparent substrate and the metal layer is removed by laser abrasion to form a metal layer of a network structure having a spacing of the network structure of 200 μm or less, and in addition, an opening ratio of the network structure of 84% or more.

A display device and a method of driving the display device include first and second pixel row groups having at least one pixel row including a plurality of pixels, a plurality of scan lines, a plurality of data lines, and a data driver generating the data voltage including a normal data voltage and a reverse bias voltage. The data driver applies one of the normal data voltage and the reverse bias voltage to the data line according to a selection signal. The normal data voltage is applied to the driving transistors of the first pixel row group, and the reverse bias voltage is applied to the driving transistors of the second pixel row group. Accordingly, the reverse bias voltages are applied to the pixels, preventing transition of threshold voltages of the driving transistors.

The present invention provides a liquid crystal display device including a liquid crystal layer disposed between a first substrate and a second substrate, a pixel electrode in a reflection region and a transmission region over the first substrate, a film for adjusting a cell gap in the reflection region over the first substrate, and an opposite electrode in the reflection region and the transmission region over the second substrate. The pixel electrode in the reflection region is provided over the film and reflects light. The pixel electrode in the transmission region transmits light. The pixel electrode in the reflection region and the transmission region includes a slit. The slit is overlapped with at least a part of a step portion which is provided by the film between the reflection region and the transmission region.

The present invention provides an image capturing apparatus which enables a desired image quality to be maintained regardless of transfer efficiency of a CCD image capturing element. R, G and B signals (CCD-RAW data) are acquired from the CCD image capturing element. In addition, various information, namely transfer efficiency of the CCD image capturing element, camera sensitivity upon photography, drive frequency of the CCD image capturing element, WB gains of the acquired R, G and B signals, pixel count, internal temperature of camera or temperature of the CCD image capturing element, and CCD color filter array of the CCD image capturing element are acquired. Signal processing on the acquired R, G and B signals is changed according to the acquired information in order to suppress image quality deterioration due to transfer efficiency degradation.

A shift register is discussed in which a pull-up switching device is turned off positively in a period in which no scan pulse is forwarded for securing drive stability and prevents a picture quality from becoming poor. The shift register in one embodiment includes stages having any one of first and second start pulses, and any one of first to fourth clock pulses to forward a scan pulse in succession, wherein the first and second start pulses are in gate high voltage states for two horizontal periods, with the second start pulse forwarded with a delay of one horizontal period than the first start pulse. The first to fourth clock pulses are in gate high voltages for two horizontal periods, with one horizontal period delay to one another.