Abstract: An active matrix display that does not require a transistor or similar current switching device at each pixel. Instead, the display employs in each pixel a temperature-controlled current source that provides to the field emitters of the pixel an amount of electrical current which varies in response to the temperature of a temperature sensor. Each pixel further includes a thermoelectric heat transfer circuit which transfers heat to or from the sensor in an amount which varies in response to the video signal. Consequently, the video signal controls the temperature of the sensor within a pixel's temperature-controlled current source, which controls the current flow through the pixel's field emitters.

Abstract: The present invention provides a driving method for a liquid-crystal-display (LCD) which is driven by a plurality of switching transistors positioned in a matrix. The drain of each switching transistor couples to a first scanning signal via a storage capacitor and to a pixel electrode. The gate and the source of each switching transistor respectively couples to a second scanning signal and a video signal. One step of the driving method is shifting the video signal to have a dc voltage of a first predetermined voltage.

Abstract: A liquid crystal display panel driving device includes a first signal level detection unit for detecting a level of an input image signal, a memory unit for delaying the input image signal by an arbitrary constant time period, a second signal level detection unit for detecting a level of a signal output from the memory unit, and a corrected-image-signal calculation unit for correcting the input image signal based on an output from the first signal level detection unit, an output from the second signal level detection unit, and the arbitrary constant time period, and for outputting the resultant image signal.

Abstract: A data signal line driving circuit which sequentially forms a plurality of sampling signals and continuously samples input signals to output such input signals, in response to the plurality of sampling signals, wherein the sampling signals respectively represent sampling periods thereof which are different from each other, and a pulse width of each of the sampling signals is prescribed to be small so that rising and falling of each of the sampling signals do not overlap each other.

Abstract: A tracking system for tracking one or more wireless input devices includes a receiver to receive wireless signals from the input devices and a tracking circuit to detect movements of the wireless input devices. The input devices may be either infrared (IR) or radio-frequency (RF) input devices.

Abstract: An information display device can be structured as an electronic book which has a first screen and a second screen made of liquid crystal with a memory effect. A dry battery can be used as its power source section. The remaining electric power of the battery is detected by measuring the voltage, and immediately before the remaining electric power becomes a minimum voltage necessary for erasure of the screens, the first and second screens are reset so that the images displayed thereon can be erased.

Abstract: Provided is an electrical circuit that provides a boosting circuit that all in one provides a regulated step-up voltage to a non-linear device such as an array of light emitting diodes (LEDs) used in a liquid crystal display (LCD). The unique placement of the current sensing circuit within the boosting circuitry eliminates the need for a separate current regulating circuit, thus minimizing the circuitry needed to provide a constant back lighting LED array of constant luminosity.

Abstract: The motion picture quality of liquid crystal display apparatus is improved by placing a non-display period depending on the responsiveness of the liquid crystal and a backlight source. For this purpose, a sub-period is set, within one frame period, for displaying a luminance corresponding to prescribed picture data so as to provide a time integral of luminance corresponding to a maximum luminance not exceeding a certain threshold, and another sub-period for displaying a lower luminance is placed in the same one frame period.

Abstract: An indicating device for a vehicle with an instrument board arranged in an image field of a driver in a control board of the vehicle, the indicating device has a unit for projecting at least one indicator on a projection surface in front of a driver seat and for forming a virtual image in front of a windshield of the vehicle, a common information source provided simultaneously for an information image forming on the instrument board in the control board and for an information image forming projected as a virtual image on the windshield of the vehicle.

Abstract: There is provided a method for driving a discharge device, especially a plasma display panel to improve a discharge process. The discharge device driving method prevents the increase of a discharge voltage and the decrease of an operating margin since space charge is efficiently controlled to lower the discharge voltage by adding a non-discharge signal for controlling space charge to a driving signal applied to at least one of two discharge electrodes, or to a third electrode, during a discharge sustaining period of the driving signals applied to both the discharge electrodes. In particular, the effects of the present invention is markedly excellent in the case of a pulse width of 1 &mgr;s or below. Discharge can be stably sustained by using a space-charge controlling non-discharge pulse of 200 ns˜1 &mgr;s wide, according to the panel structure, physical characteristics, and the driving method.

Abstract: Electroluminescent display device comprising drive circuitry (a number of alternatives is given) to determine the surface area of a pixel (via capacitance, reverse current) and adjust the current density in the pixel accordingly.

Abstract: In a manually movable computer mouse with a mouse movement sensing system for providing mouse movement signals, and at least one user finger operable control switch, for providing control signals for a graphic user interface, the mouse has a boomerang shaped body ergonomically shaped to fit and support the user's hand in a naturally relaxed curled hand position, with a main body portion and a narrower neck portion extending at an angle of about 45 degrees to 90 degrees to the main body narrow enough to be interposeable between the thumb and first finger, and with an integral mouse movement control fin or tab extending above the mouse body and being thinly shaped to fit in the relaxed space between the first and second fingers (and to also provide an alternate pen-like grip between the thumb and first finger) to orient the mouse to the users hand and move the mouse with user arm movements. An integral wrist support may be provided extending from the wrist end of the mouse.

Abstract: In a liquid crystal display device having a pair of substrates disposed to oppose one another and a liquid crystal layer sealed therebetween, an image signal driver circuit element disposed on a surface of one of the pair of substrates confronting the liquid crystal layer, and a plurality of wiring layers formed on the surface so as to connect the image signal driver circuit element electrically to external circuitry at least two of the plurality of the wiring layers belongs to a first group and are connected to input electrodes of the image signal driver circuit element for receiving logic signals, at least two of the plurality of the wiring layers other than those of the first group belongs to a second group and are connected to input electrodes of the image signal driver circuit element, other than those for receiving logic signals, which are electrically connected to a voltage supply, and at least one of the wiring layers belonging to the first group and the wiring layers belonging to the second group hav

Abstract: The present invention is generally directed to a system and method for anti-aliasing edges of adjacent primitives. In accordance with one aspect of the invention, a method operates by determining whether a pixel is an edge pixel of a filled primitive, approximating a coverage area of the pixel, the coverage area being the area of the pixel interior to the primitive edge, determining a direction from the pixel center to an external edge of the primitive, and blending a first color of the primitive with a second color, the second color being a color of a pixel of a second primitive adjacent the external edge. In accordance with another aspect of the invention, a system is provided having frame buffer circuitry uniquely configured for rendering an anti-aliased graphics scene.

Abstract: A touchpad pointing device dynamically adjusts cursor control gain characteristics based on the x-y coordinates at which the finger first touches the touchpad for a given cursor control task. In this manner, cursor control gain such as simple cursor tracking rate or cursor acceleration profile may be optimized for each control task without changing settings. The x-y coordinates are preferably grouped into easily identifiable zones on the touchpad surface. Accordingly, a wide range of control gain is available, including very high cursor track rates where long distance cursor excursions are desired, and very low cursor tracking for tasks requiring fine cursor positioning. As a further aspect of the invention, the touchpad also allows control of other operational features such as tapping, tapping sensitivity, and button functionality, thus providing a touchpad that is highly customizable.

Abstract: A MOS transistor (M1) which is arranged in the highest order of a low Vth MOS transistor grayscale group of a decoder circuit of a drain driver is formed of a CMOS transistor, to prevent a current from flowing from an output side into the low Vth MOS transistor portion owing to a grayscale voltage applied to another portion.

Abstract: In an operation of an address period for addressing cells of a display device, such as a plasma display panel, comprising a plurality of cells of three kinds, red (R), green (G), blue (B), which are arranged on a plane for forming a display surface thereof, in which each of said cells comprising: a pair of transparent electrodes provided in parallel to each other; an address electrode being positioned opposing the pair of transparent electrodes; luminescence medium provided on the address electrode; and a discharge space being defined between the pair of transparent electrodes and said fluorescence medium on the address electrode, wherein the address discharge is conducted by applying an address voltage to the address electrode, and the address voltage applied is determined depending upon the each kind of the cells, R, G and B.

Abstract: A technique is described for driving a liquid crystal display device having a liquid crystal layer exhibiting a cholesteric phase and switchable between a planar state and a focal conic state according to the magnitude of an applied voltage. The technique comprises the steps of: in a first period, simultaneously applying a voltage by which a plurality of pixels arranged in a matrix array are reset to the focal conic state; in a second period after the first period, sequentially applying voltages corresponding to image data to the pixels, thereby updating the display contents of the pixels; and in a third period after the second period, retaining the display state by utilizing memory characteristics of the liquid crystal.

Abstract: A digital map display zooming method for continuously enlarging and reducing a displayed portion of a digital map as map information in digital form within a display screen is provided which comprises the steps of displaying the displayed portion of the digital map at the display screen, displaying a scroll part within the display screen for shifting the displayed portion, making the scroll part function as a scale setting part for carrying out enlarging and reducing operations of the displayed portion of the digital map within the display screen, and carrying out enlarging and reducing operations of the displayed portion of the digital map within the display screen by shifting a shifting operation part of the scale setting part.

Abstract: The present specification and drawings disclose a technique to display image on the display panel using subfield. Particularly, it is disclosed that the technique for conducting the reset operation by impressing, to the electrode of cells, a plurality of reset pulses per one subfield in the subfield period for the reset operation and then conducting the address operation for selecting cells for display discharge. Further, it is disclosed that the display technique for causing the cells of display panel to conduct display discharge for image display through the reset operation and address operation. Namely, it is the technique for impressing the auxiliary pulse to the electrode of cells after impression of reset pulse for reset operation to form charges in inverse voltage to the scan pulse during the address operation and then conducting the address operation for selecting the cells for display discharge.