Abstract: The image display apparatus of the invention has: a liquid crystal panel that is used to display an image represented by input image data; and a lighting device that emits illumination light controlled according to a light control level suitable for the input image data and irradiates the liquid crystal panel with the controlled illumination light. The image display apparatus further includes a counter electrode voltage control module that generates a counter electrode voltage to be input into the liquid crystal panel and supplies the generated counter electrode voltage to the liquid crystal panel. The counter electrode voltage control module has: a counter electrode voltage setting module that sets a counter electrode voltage control level corresponding to the light control level; and a counter electrode voltage generation module that generates the counter electrode voltage in response to the set counter electrode voltage control level.

Abstract: A 2.2th-power to 1st-power conversion circuit 102 uses a 2.2th-power curve to convert an input R signal ‘a’ into an R signal ‘b’ expressed in a 1st-power signal space. Offsets, which are to be added to a G signal and a B signal, at each tone of the R signal ‘b’ expressed in the 1st-power signal space have been stored in advance in a GLUT 112 for R and a BLUT 113 for R. In response to input of the R signal ‘b’, the GLUT 112 for R and the BLUT 113 for R output the offsets, which are to be added to the G signal and the B signal, according to the tone value of the R signal ‘b’. An adder circuit 122 adds offsets ‘c’ and ‘d’, which are output from an RLUT 114 for G and an RLUT 116 for B, to the R signal ‘b’ output from the 2.2th-power to 1st-power conversion circuit 102, so as to give an R signal ‘e’. A 1st-power to 2.2th-power conversion circuit 132 reversely converts the R signal ‘e’ according to the 2.2th-power curve.

Abstract: A cavity is formed by a lower multilayer mirror and an upper multilayer mirror and an active layer is arranged between the lower multilayer mirror and the upper multilayer mirror in a surface-emitting laser element. A relaxation oscillation frequency at a bias point in the cavity is set to exceed an optical communication frequency for modulating a laser light output from the surface-emitting laser element.

Abstract: Technology for carrying out a luminance range expansion process is provided. In the technology, the luminance range expansion process is carried out in a manner appropriate to the luminance histogram of image data. Using the white peak value WP which represents the maximum value of luminance and the APL which represents the mean value thereof in the luminance histogram of image data, an expansion coefficient for use in the luminance range expansion process is derived by referring to an expansion coefficient lookup table 210. On the basis of the expansion coefficient, the luminance range expansion process is performed on the image data.

Abstract: There is provided a surface emitting semiconductor laser satisfying a requirement of making a transverse mode stable and having characteristics of high output power, low resistance, high efficiency, and high speed response and a method for manufacturing the surface emitting semiconductor laser. Five holes are formed on the top surface of an upper multilayer reflection film formed in the shape of a post by the use of a focused ion beam (FIB) processing unit. One hole is formed on the surface of an upper multilayer reflection film corresponding to the center position of a square current injection region which is about 8 ?m square and the remaining four holes are formed at the corners of the square current injection region, for example, at the positions about 2 ?m square away from the one hole to produce four light emitting spots.

Abstract: A driving device for a liquid crystal panel that includes: plural liquid crystal cells arranged in a matrix shape; pixel electrodes provided for the respective liquid crystal cells; plural data lines for inputting an image signal to the respective pixel electrodes; a data line driver that generates a sampling signal for sampling the image signal from inputted plural timing signals; plural sampling circuits provided for the respective data lines that sample the image signal according to the sampling signal and output the image signal to the data lines; and a dummy element formed on, at least, a substrate identical with a substrate on which the sampling circuits are formed, the driving device for a liquid crystal panel including: a signal generating circuit that generates, as the plural timing signals, a start signal and other signals generated with the start signal as a reference of a phase; a reference signal generating circuit that generates a reference signal with a horizontal synchronizing signal of an ima

Abstract: A tone correction LUT 310 reads an offset Vos1 corresponding to a tone level of a digital image signal Vi and outputs the offset Vos1 to an adder-subtracter circuit 320. The adder-subtracter circuit 320 adds the offset Vos1 to the digital image signal Vi according to the polarity of a polarity specification signal INV and outputs a digital image signal Vs1. An in-plane correction arithmetic circuit 330 reads an offset Vos2 corresponding to a display position or a pixel position in response to a positioning signal POS and outputs the offset Vos2 to an adder-subtracter circuit 340. The adder-subtracter circuit 340 adds the offset Vos2 to the digital image signal Vs1 according to the polarity of the polarity specification signal INV and outputs a digital image signal Vs2.

Abstract: A projector in accordance with the invention includes a projection lens having a zoom function that forms a projected image corresponding to an image signal on a screen, a zoom state detection section that detects a zoom state of the projection lens, and an uneven color correction section that performs uneven color correction on the image signal based on a detected zoom state.

Abstract: The image display apparatus comprises: an image processor for outputting image data including plural color component data; a gain corrector for correcting levels of the image data output by the image processor; and an image display device having a plurality of pixels from each of whose pixels light for forming an image exits in accordance with the corrected image data corrected by the gain corrector. The gain corrector corrects the level of at least one of the plural color component data applied to the pixels in accordance with the positions of the pixels such that, when image data representing an image of a prescribed uniform color are output from the image processor, difference in chromaticity of light exiting from the pixels is reduced among the pixels without making luminance of the light exiting from the pixels of the image display device the same at all pixels.

Abstract: A display panel drive circuit according to exemplary embodiments of the invention include a source driver that applies a drive voltage corresponding to a display level of gray to a source line of an active element to drive each pixel of a display panel in which the display level of gray of each pixel is determined depending on accumulated charge between electrodes of each pixel. Exemplary embodiments further include a control unit that controls the drive voltage to be applied to the source line by the source driver and a potential of a common electrode of the display panel at the same potential in a predetermined period.

Abstract: There is provided a surface emitting semiconductor laser satisfying a requirement of making a transverse mode stable and having characteristics of high output power, low resistance, high efficiency, and high speed response and a method for manufacturing the surface emitting semiconductor laser. Five holes are formed on the top surface of an upper multilayer reflection film formed in the shape of a post by the use of a focused ion beam (FIB) processing unit. One hole is formed on the surface of an upper multilayer reflection film corresponding to the center position of a square current injection region which is about 8 ?m square and the remaining four holes are formed at the corners of the square current injection region, for example, at the positions about 2 ?m square away from the one hole to produce four light emitting spots.

Abstract: A gradation attributes correcting device to correct gradation attributes of an input image signal includes a brightness gradation correcting unit to correct gradation attributes with respect to brightness of an image indicated by the input image signal. The brightness gradation correcting unit includes a characteristic information acquisition unit, a correction information decision unit, and a brightness gradation processing unit. The characteristic information acquisition unit acquires a minimum, average, and maximum brightness, of an image on a frame from the input image signal. The correction information decision unit determines correction information to correct the gradation attributes with respect to brightness according to combinations of the acquired minimum, average and maximum brightness of the image on the frame.

Abstract: This is an image processing device that processes images, and that, for an image, sets multiple sets of reference pixels as references and adjacent pixels that are adjacent to these reference pixels. For each difference absolute value for each set, the total of the number of the absolute value of differences that are greater than a preset first threshold value is calculated as the edge volume. When the calculated edge volume is greater than a preset second threshold value, the aforementioned image is distinguished to be a notated image that contains text or symbols, etc. When the aforementioned edge volume is not greater than the second threshold value, the aforementioned image is distinguished to be an image other than a notated image. Therefore, with the present invention, it is possible to suitably distinguish between notated images that contain text or symbols, etc. and non-notated images other than the notated images.

Abstract: An information display 1 according to the present invention has an information carrier 10 including a storable display panel 14 separate from a processing unit 20 including a battery 27, and in the case where there is a need to perform a process such as updating or manipulating information displayed on the display panel 14, it is possible to perform a desired process by connecting the processing unit 20 to the information carrier 10. For that reason, it is possible, in normal use, to separate components other than those for maintaining “display” which is a fundamentally required function for a display close to “paper” from the information display 1. Therefore, it is possible to realize the information display having convenience capable of replacing the paper.

Abstract: In the case where processing is implemented in a medium mode, by interconnecting connectors 10 and 28, processing of information to be displayed on a memory type display panel 2 is implemented by a host display processing device 21; in the case where processing is implemented in a stand-alone mode, by disconnecting the connectors 10 and 28 from each other, processing of information to be displayed on the memory type display panel 2 is implemented by an information display sheet 1 itself.

Abstract: Aspects of the invention can reduce the memory capacity constituting a lookup table while reducing the lower in color correction accuracy. A color correction circuit for correcting for color of an image to be displayed, in an image display apparatus, can include a two-dimensional lookup table. A color correction circuit section is for correcting for intensity level of at least one signal of three signals of a light-intensity signal, a first chrominance signal and a second chrominance signal that are to be inputted as an image signal representative of the image, by use of a correcting value stored in the two-dimensional lookup table, according to a combination in intensity level of the first and second chrominance signals. The two-dimensional lookup table can store, as the correcting value, correcting values corresponding respectively to combinations to be specified by an intensity level of the first chrominance signal and an intensity level of the second chrominance signal.

Abstract: An opposing electrode voltage regulator adjusts the voltage values of an opposing electrode inputted in a liquid crystal display through the below processing. In a case where an instruction is given to adjust the voltage value of the opposing electrode inputted in the liquid crystal panel, the value of the parameter set to the opposing electrode voltage generator is changed, and a plurality of values are successively set. The difference between the maximum and minimum values of the luminance signal inputted from the luminance detectors is found as the flicker value for each parameter value. The parameter value corresponding to the minimum flicker value that was found is set to the opposing electrode voltage generator. The opposing electrode voltage is thereby adjusted in response to changes in the optimal value that should be provided as the opposing electrode voltage for the liquid crystal panel.

Abstract: Aspects of the invention provide a color correction circuit that can reduce a memory capacity needed to create a look-up table while suppressing deterioration in accuracy of color correction.

Abstract: A surface-emitting semiconductor laser includes a first reflection layer formed on a substrate; an active layer formed on the first reflection layer; a second reflection layer formed on the active region; an electrode that has an aperture that defines a light emission range and is provided on the second reflection layer so that an uppermost layer of the second reflection layer is exposed through the aperture; and a third reflection layer that is provided on the electrode so as to cover the aperture. The third reflection layer includes a conductive film that electrically contacts the uppermost layer of the second reflection layer.

Abstract: A former stage signal adjustment module included in a signal adjustment device has a signal conversion sub-module, a first lookup table, and an interpolation sub-module. The signal conversion sub-module outputs an upper q-bit color video signal, where q is an integer of not less than 1 and not greater than (p?1), in response to input of a p-bit color video signal, where p is an integer of not less than 2. The first lookup table stores information representing a mapping of a tone value expressed by the upper q-bit color video signal to an r-bit tone value set according to first adjustment information regarding a predetermined characteristic, where r is an integer of not less than p.