Abstract: The present invention enhances instant readability by causing a driver to visually recognize, without a feeling of stranger an image obtained by photographing an area around a vehicle. A display section (11, 12, 13) is provided ahead of a driver, and the display section displays an image, obtained by photographing an area around an automobile (1), so that the image is recognized to be located on a deeper side away from the driver, an amount, by which a visible object is recognized to be located on a deeper side than a display screen, corresponding to a distance which causes the driver to recognize the visible object reflected by a mirror.

Abstract: An aspect of the present invention provides a display device that does not hinder driving. An electronic mirror includes: an image display device capable of switching between 2D display and 3D display, the 3D display being carried out by a parallax barrier method; and a distance measuring device for measuring a distance from eyes of a user to a display screen of the image display device. The electronic mirror switches display from the 3D display to the 2D display in a case where the distance measured by the distance measuring device falls outside a predetermined range during the 3D display.

Abstract: An aspect of the present invention provides a display device that does riot hinder driving. An electronic mirror in accordance with an embodiment of the present invention includes: a depth adjusting section for adjusting a depth of a visible object contained in an image, in a case where 2D display is switched to 3D display or in a case where 3D display is switched to 2D display; and an output image generating section for generating an image which reaches, in a predetermined time period, the depth having been adjusted by the depth adjusting section.

Abstract: To ensure the safety of the driver and offer an improved operability at the same time, a rear-view mirror (200) includes a half mirror (150) configured to reflect light incident on its reflecting surface and transmit light incident on its transmitting surface and a side-surface touch sensor (121) configured to detect a touch by the user on the side surface of a casing that houses a display (130) having a display surface and disposed on or over the half mirror (150) in such a manner that the transmitting surface faces the display surface.

Abstract: A display device is provided that comprises a liquid crystal display panel (2) for displaying an image by spatial light modulation. The image is represented by a plurality of image elements each having an image data value (7). The display device further comprises a display controller (1) arranged to determine a signal voltage to be applied to the panel (2) for each image element in dependence upon its image data value (7) and a secondary data value (8) for the element, there being a predetermined mapping between the data values and the signal voltage. The secondary data values (8) are arranged to vary across the image so as to introduce variations in luminance as a result of the mapping. The mapping and secondary data values (8) are mutually arranged to take account of the signal voltage to on-axis luminance response of the panel (2) so that the luminance variations introduced on-axis tend to balance locally through spatial averaging to, and hence would not be perceivable by, an on-axis viewer (3).

Abstract: A method of processing image data for display by a display panel of a display device. The method comprises receiving main image pixel data representing a main image and side image pixel data representing a side image, and performing a mapping of the pixel data to signals used to drive the display panel. The mapping is arranged to produce an average on-axis luminance which is dependent mainly on the main image pixel data and an average off-axis luminance which is dependent at least to some extent on the side image pixel data. A compression of the main image pixel data is performed in advance of or at least partly incorporated into the mapping, the compression being performed at least partly in dependence upon the main image pixel data and at least partly in dependence upon how the off-axis luminance varies with pixel data input to the mapping.

Abstract: An image display apparatus having sub-pixels of four colors is provided in which the resolution when an image is two-dimensionally displayed is not affected, and deterioration in the color balance of a three-dimensionally displayed image is suppressed. In the image display apparatus, the arrangement of a sub-pixel for displaying red for a left eye and a sub-pixel for displaying green for a right eye has been replaced with the arrangement of a sub-pixel (Lg1) for displaying green for the left eye and a sub-pixel (Rr1) for displaying red for the right eye. The arrangement of a sub-pixel for displaying blue for the left eye and a sub-pixel for displaying yellow for the right eye has been replaced with the arrangement of a sub-pixel (Lx1) for displaying yellow for the left eye and a sub-pixel (Rb1) for displaying blue for the right eye. Replacement with the sub-pixel and the sub-pixel and replacement with the sub-pixel and the sub-pixel are made for every other pixel.

Abstract: A method is provided of processing image data for display by a display panel of a display device. The method comprises receiving main image pixel data representing a main image and side image pixel data representing a side image, and performing a mapping of the pixel data to signals used to drive the display panel. The mapping is arranged to produce an average on-axis luminance which is dependent mainly on the main image pixel data and an average off-axis luminance which is dependent at least to some extent on the side image pixel data. A compression of the main image pixel data is performed in advance of or at least partly incorporated into the mapping, the compression being performed at least partly in dependence upon the main image pixel data and at least partly in dependence upon how the off-axis luminance varies with pixel data input to the mapping.

Abstract: A method of operating a display device comprising a display panel comprises receiving main and side image pixel data respectively representing a main image (S1) and a side image (S2). For each of a plurality of pixel groups (S3), where each pixel group comprises at least one pixel of the main image pixel data and at least one spatially corresponding pixel of the side image pixel data, a predetermined mapping is performed (S4) using the pixel data of the pixel group as input. The mapping holds output pixel data for the input pixel data which is known to produce an average on-axis luminance with substantially no dependence on the side image pixel data of the group and an average off-axis luminance with substantially no dependence on the main image pixel data of the group. The signals used to drive the display panel are determined from the output pixel data (S5).

Abstract: A display device is provided that comprises a liquid crystal display panel (2) for displaying an image by spatial light modulation. The image is represented by a plurality of image elements each having an image data value (7). The display device further comprises a display controller (1) arranged to determine a signal voltage to be applied to the panel (2) for each image element in dependence upon its image data value (7) and a secondary data value (8) for the element, there being a predetermined mapping between the data values and the signal voltage. The secondary data values (8) are arranged to vary across the image so as to introduce variations in luminance as a result of the mapping. The mapping and secondary data values (8) are mutually arranged to take account of the signal voltage to on-axis luminance response of the panel (2) so that the luminance variations introduced on-axis tend to balance locally through spatial averaging to, and hence would not be perceivable by, an on-axis viewer (3).

Abstract: A coordinate inputting apparatus capable of being used in combination with a device generating noise, comprises an input section for inputting coordinates, a detecting section for detecting the input coordinates, and a control section for controlling the entire coordinate inputting apparatus. The control section sets a detecting time during which the detecting section detects the coordinates and a non-detecting time during which detection is not performed, the detecting time and the non-detecting time being alternately repeated, and the control section controls the coordinate inputting apparatus so that an operation of the device is stopped for at least a time during which the coordinate inputting apparatus is otherwise affected by the noise, the time being part of the detecting time.

Abstract: A coordinate inputting apparatus capable of being used in combination with a device generating noise, comprises an input section for inputting coordinates, a detecting section for detecting the input coordinates, and a control section for controlling the entire coordinate inputting apparatus. The control section sets a detecting time during which the detecting section detects the coordinates and a non-detecting time during which detection is not performed, the detecting time and the non-detecting time being alternately repeated, and the control section controls the coordinate inputting apparatus so that an operation of the device is stopped for at least a time during which the coordinate inputting apparatus is otherwise affected by the noise, the time being part of the detecting time.

Abstract: In the display control device of the present invention, individual control signals are supplied to a liquid crystal display device and a television-signal encoder respectively from a reading circuit so that RGB data, stored in a display memory, is commonly used by those devices. Therefore, the number of data bus lines, that is, the number of terminals of the display control circuit, can be reduced to, for example, 18, namely, 6 for each of the colors of R, G and B; thus, the number of terminals for RGB data can be reduced to ½.

Abstract: It is an object of the invention to provide a display control circuit capable of superimposing superimpose data which can be optionally set on an external image. When a superimposing function is set to ON, the optional superimpose data is preset by a software in a display DRAM of the display control circuit. A superimpose data latch temporarily latches the superimpose data stored in the display DRAM in accordance with a timing signal generated from a memory timing generator. The superimpose data is output to a data comparing/switching circuit in synchronization with the timing of tuner image data. The data comparing/switching circuit outputs overlap data, which is obtained by superimposing the superimpose data on the tuner image data, to a TFT liquid crystal panel in accordance with the timing signal generated from a display timing generator. Thus, the optional superimpose data can be superimposed on the external image.

Abstract: For display control of a liquid crystal display, display data and address signals for designating display dots are required. Segment address data designating X-direction addresses in the display space and common address data designating Y-direction addresses are input. Processing such as block transfer of address data in cases where the display address extends beyond the display space and where display picture is shifted within the display space has hitherto been carried out by software, but this places limitations on display speed. In the present application, the display space is divided in the X direction and the divisions of the display space are separately served by phural segment drive circuits. A common drive circuit is provided with hardware elements for selecting individual segment drive circuits so as to match the display address, This permits high-speed display operation and facilitates provision of software regulating the operation CPU.

Abstract: For display control of a liquid crystal display, display data and address signals for designating display dots are required. Segment address data designating X-direction addresses in the display space and common address data designating Y-direction addresses are input. Processing such as block transfer of address data in cases where the display address extends beyond the display space and where display picture is shifted within the display space has hitherto been carried out by software, but this places limitations on display speed. In the present application, the display space is divided in the X direction and the divisions of the display space are separately served by phural segment drive circuits. A common drive circuit is provided with hardware elements for selecting individual segment drive circuits so as to match the display address. This permits high-speed display operation and facilitates provision of software regulating the operation CPU.

Abstract: In the case where a fed display data is to be displayed as it is, a display operation is executed in accordance with a predetermined first clock signal. In the case where a calculation operation is executed based on the fed display data and the calculation result is to be displayed as a display data, the display operation is executed in accordance with a second clock signal having a frequency higher than that of the first clock signal. In this way, the second clock signal is fed to a display device only when the calculation operation which requires a high speed processing is executed. Accordingly, power consumption can be reduced and an improved quality of display can be obtained. Further, an inversion signal is fed to the display device together with a display signal and a scan signal. The inversion signal is used for periodically switching the polarity of the display signal applied to the display device so as to prevent an occurrence that a direct current is applied to the display device.

Abstract: A clock generation circuit (23) is provided for use with a data display device and a calculation unit, with the calculation unit performing a calculation in a calculation mode resulting in data which is displayed on the data display device. The clock generation circuit generates a first clock signal (CK2) and a second clock signal (CK1). The second clock signal (CK1) is generated by a circuit (52) only during a calculation mode. A clock switching circuit (54) selects, in dependence upon whether the calculation mode is being executed, between a clock signal (CKD) derived from the signal (CK1) and an independently-produced clock signal (CKI) for use as the first clock signal (CK2). Thus, power is conserved by turning off the circuit (52) during a pure display mode and by turning off an oscillator (24) which generates the signal (CKI) during a calculation mode.

Abstract: The invention provides a coordinates input device capable of detecting coordinates with high accuracy by eliminating errors that could be contained in detected voltage depending on the condition of the pressure applied to a coordinates input section. When pressure is applied to a plane resistive sheet of the coordinates input section, the maximum voltage applied to the coordinates input section is detected by means of an A/D converter prior to the detection of the coordinates, and correction is made by a reference voltage regulating circuit so that a reference voltage becomes equal to the maximum voltage. Thereafter, the A/D converter converts the detected voltage to digital data on the basis of the corrected reference voltage, for calculation of the coordinates. Errors that could be contained in the detected voltage when detecting the coordinates can thus be eliminated.

Abstract: A display control circuit includes a window coordinate data memory for storing window coordinate data which specifies a window region in a display region of a displaying device for displaying an image in accordance with address data and display data, a mask data generator for generating mask data for distinguishing the window region from the display region in accordance with the address data and the window coordinate data, and an operating device for generating display data input to the displaying device by operating the mask data and the display data corresponding to every address data input to the displaying device.