Abstract: A projector screen that is used together with a projector for protecting a moving image being a result of scanning output of a video signal, and displays the moving image by a projection light reaching thereto after being emitted when the projector projects the moving image, the projector screen includes: a screen member that configures a partition screen area being a part of a screen area of displaying the moving image partitioned to a plurality of rows, and is capable of mode change between a first mode of delivering the projection light having reached the partition screen area to a side of a viewer, and a second mode of not delivering the projection light having reached the partition screen area to the viewer; and mode changing means for moving, for the screen member of each of the rows of the screen area, by exercising control over each of the screen members in terms of mode change between the first and second modes, any of the partition screen areas put in the second mode in the screen area.

Abstract: This image data processing device DP1 is equipped with a frame video data acquiring unit 40 and driving video data generator 50. The frame video data acquiring unit 40 acquires first frame video data FR(N) that shows first original images, as well as second frame video data FR(N+1) that show second original images that are displayed following the first original images. The driving video data generator 50 generates first through fourth driving video data DFI1(N), DFI2(N), DFI1(N+1), DFI2(N+1) that respectively show first through fourth driving images to be sequentially displayed on the image display device. First and second driving video data DFI1(N), DFI2(N) are generated based on first frame video data FR(N). Third and fourth driving video data DFI1(N+1), DFI2(N+1) are generated based on second frame video data FR(N+1). The color of the pixel in a part of the second driving image constitutes the complementary color of the color of the corresponding pixel in the first driving image.

Abstract: A moving image display device for displaying a moving image based on moving image data includes a plurality of display elements arranged in a matrix configuration and a driver configured to drive the plurality of display elements. The plurality of display elements are divided into i (where i is an integer not lower than 2) groups respectively containing a predetermined number of rows of the display elements. The driver sequentially selects the display elements row by row in parallel for the respective i display element groups and provides the selected display elements with a drive signal in accordance with the moving image data.

Abstract: To provide a technique to prevent an occurrence of flicker due to overlap periods during display of moving pictures. A display device includes: a plurality of light outputting elements; and a plurality of element controllers corresponding to the plurality of light outputting elements. In response to a predetermined signal provided to the plurality of element controllers at same timing, each of the plurality of element controllers supplies the light outputting element with pixel data included in image data that represents an image to be displayed by the display device, and controls an operating status of the light outputting element.

Abstract: In the moving image display device of the invention, a synthesis circuit inputs signals representing specified values of pixel rate factors R2 and R3 from a pixel rate factor specification circuit, while inputting overscanned frame image data D1 in the units of pixels from a 1st latch circuit. The synthesis circuit extracts a preset number of pixels corresponding to the specified value of the pixel rate factor R2 from a prior frame image, while extracting a preset number of pixels corresponding to the specified value of the pixel rate factor R3 from a latter frame image. The positions of pixels to be extracted from the latter frame image are complementary to the positions of pixels to be extracted from the prior frame image. The synthesis circuit combines the extracted pixels of the prior frame image with the extracted pixels of the latter frame image by a logical OR operation to generate intermediate frame image data D2.

Abstract: The synthesizing circuit inputs signals representing the brightness coefficient K2 and the brightness coefficient K3 from the multiplexer, and inputs the overscanned frame image data D1 in pixel units from the first latch circuit. When the start frame image read the third time and the after frame image read the first time are input simultaneously, the synthesizing circuit calculates the brightness coefficient K2 for the brightness value of the pixels of the start frame image, and calculates the brightness coefficient K3 for the brightness value of the pixel of the after frame image. Then, it synthesizes the pixels of the start frame image and the pixels of the after frame image for which the respective brightness coefficients were calculated, and generates the intermediate frame image data D2. As a result, it moving image flicker is suppressed using an easier method than in the past, and it is possible to realize smoother moving image display.

Abstract: The electric machine of the present invention comprises a first coil group containing a plurality of coils and a magnet group. The first coil group is classified into M phase sub coil groups, with the coils of the sub coil groups aligned one at a time in sequence at a specified sub coil group interval Dc from the first phase sub coil group to the M-th phase sub coil group. A sub coil group interval Dc is set to a value of K/M times a magnetic pole pitch Pm (K is a positive integer excluding an integral multiple of M) where the distance corresponding to an electrical angle of ? is defined as the magnetic pole pitch Pm. The adjacent sub coil groups are driven at a (K/M) ? phase difference. Each coil have substantially no magnetic material core.

Abstract: The electric machine of the present invention comprises a first coil group containing a plurality of coils and a magnet group. The first coil group is classified into M phase sub coil groups, with the coils of the sub coil groups aligned one at a time in sequence at a specified sub coil group interval Dc from the first phase sub coil group to the M-th phase sub coil group. A sub coil group interval Dc is set to a value of K/M times a magnetic pole pitch Pm (K is a positive integer excluding an integral multiple of M) where the distance corresponding to an electrical angle of ? is defined as the magnetic pole pitch Pm. The adjacent sub coil groups are driven at a (K/M)? phase difference. Each coil have substantially no magnetic material core.

Abstract: In an image data processing device of the invention, an image memory sequentially stores input image data of multiple frames. A write control module controls a writing operation into the image memory, and a read control module controls a reading operation from the image memory. A driving image data generation module generates the driving image data from read image data sequentially read from the image memory. The driving image data generation module generates the driving image data by replacing at least part of the read image data with regard to selected pixels with mask data. The mask data is set corresponding to a pixel value of the read image data in each of the selected pixels to be replaced with the mask data. This arrangement of the invention effectively reduces blur of a moving image displayed by the image display device, while preventing a significant decrease in luminance level of the displayed image.

Abstract: A display method for a liquid crystal panel is provided. The method includes a step of scanning pixels, arranged in a matrix, in an horizontal direction and in a vertical direction, to write video signals, thereby performing display; and a step of delaying the vertical-direction scanning for writing the video signals by a predetermined amount of time and writing a first predetermined fixed-level signal to all pixels in a row specified by the vertical-direction scanning delayed by the predetermined amount of time, in a predetermined time in the horizontal blanking period, thereby performing display.

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: A liquid crystal display device has a liquid crystal panel module, sampling circuits that sample video signals in response to sampling circuit driving signals, a timing adjustment module that adjusts the phase of a timing signal, driving signal generators that generate the sampling circuit driving signals in response to the timing signal, and a dummy element that has substantially equivalent retardance to those of the driving signal generators and receives input of the timing signal. The timing adjustment module detects a variation in signal delay in the driving signal generators with a temperature change or with time, as a phase difference of an output signal from the dummy element relative to a reference signal. The timing adjustment module adjusts the phase of the timing signal corresponding to the detected phase difference.

Abstract: The projector comprises a light source that emits illuminating light, a single modulation panel, a projection optical system, a color filter mechanism, a converging optical system that converges the illuminating light on a filter surface of the color filter mechanism, and a controller for controlling the color filter mechanism and the single modulation panel. The color filter mechanism includes a rotatable filter rotor having a plurality of color filters and a plurality of light-blocking mask bands provided at the boundaries of the color filters, and a filter driver that rotates the filter rotor. The converging optical system converges the illuminating light such that the size of the illuminating light spot on the filter surface is smaller than the individual color filters.

Abstract: A single-plate modulation panel comprises, for each pixel, a drive signal storage section for storing the drive signals corresponding to three colors used during the individual modulation of three-color illumination light; a color selection section for selecting one of the drive signals for the three colors stored in the drive signal storage section; and a modulation-executing section for performing modulation in accordance with the drive signals selected by the color selection section. Three light sources are controlled such that the single-plate modulation panel is illuminated with three-color illumination light in a recurring fashion one color at a time. In addition, the color selection section is controlled such that one of the drive signals corresponding to the three colors stored in the drive signal storage section is applied to the modulation-executing section while being switched in synchronism with the lighting timing of three-color illumination light.

Abstract: An image signal processing circuit (102) includes a phase-expansion circuit (103), a digital polarity-inversion circuit (104), first to sixth D/A converters (111 to 116), and first to sixth operational amplifiers (151 to 156). The resistance value of the first to sixth amplitude adjusting resistors (121 to 126) which cause the output amplitude of an analog signal output from the first to sixth D/A converters (111 to 116) to be fixed is adjusted by laser trimming. First to sixth gain setting resistors (161 to 166) are connected to the first to sixth operational amplifiers (151 to 156). The first gain setting resistor (161) includes a first resistor (131) and a second resistor (141), and the gain of the operational amplifier (151) is set by the resistance ratio (R2/R1) thereof. In order that this resistance ratio (R2/R1) is fixed for each set, the first resistor (131) and the second resistor (141) are formed on the same substrate by undergoing the same manufacturing process.

Abstract: An image signal processing circuit (102) includes a phase-expansion circuit (103), a digital polarity-inversion circuit (104), first to sixth D/A converters (111 to 116), and first to sixth operational amplifiers (151 to 156). The resistance value of the first to sixth amplitude adjusting resistors (121 to 126) which cause the output amplitude of an analog signal output from the first to sixth D/A converters (111 to 116) to be fixed is adjusted by laser trimming. First to sixth gain setting resistors (161 to 166) are connected to the first to sixth operational amplifiers (151 to 156). The first gain setting resistor (161) includes a first resistor (131) and a second resistor (141), and the gain of the operational amplifier (151) is set by the resistance ratio (R2/R1) thereof. In order that this resistance ratio (R2/R1) is fixed for each set, the first resistor (131) and the second resistor (141) are formed on the same substrate by undergoing the same manufacturing process.

Abstract: Image data to which gamma correction for a CRT has been applied is digitally gamma corrected to image data based on an applied voltage-transmittance characteristic of a liquid crystal display unit.A digital gamma correction circuit for correcting digital image data to which gamma correction for a CRT has been applied to digital image data suitable for driving display on liquid crystal display units 50R, 50G, 50B comprises a first digital gamma correction circuit 24 and a second digital gamma correction circuit 32. The first digital gamma correction circuit 24 applies a first gamma correction containing a correction for effectively restoring digital image data to which gamma correction for a CRT has been applied to the digital image data before gamma correction for a CRT was applied.