Abstract: A drive signal for an LCD panel is formed of pulses having a raised cosine shape. Such pulse shape results in a drive signal having minimal harmonic content. The resulting drive signal is less susceptible to low pass filter, signal degradation effects. Regarding STN displays, the degradations which do occur are readily correctable amplitude and phase variations. Regarding TFT panels, the reduced harmonic content, in turn reduces coupling between adjacent panel circuits.

Abstract: A customizable hand-held data terminal system employs multiple housing bases able to accommodate different components allow the manufacture of hand-held data terminals with a variety of features based on a single design. Because the system according to the present invention does not require the external mounting of components, the ergonomics and basic footprint of the unit remains unaltered. The present system also alleviates problems with moisture resistance, shielding, and survivability under harsh treatment associated with terminals employing externally mounted end cap modules or pod. The present invention employs a plurality of different sized base units which can accommodate a variety of different components and configurations, and wherein the different base units are interchangeable with a single upper surface and user interface comprising a display screen and keypad.

Abstract: A plasma addressed electro-optical display including a first substrate having a plurality of discharge electrodes formed thereon; a dielectric layer disposed apart from the first substrate for a predetermined distance; a plasma cell formed by sealing the peripheries of the first substrate and the dielectric layer with a sealing portion; and a second substrate disposed opposite to the dielectric layer and having signal electrodes intersecting the discharge electrodes on the surface thereof, wherein the plasma cell and the second substrate are stacked in such a manner that an electro-optical material layer is interposed between the plasma cell and the second substrate so that the plasma addressed electro-optical display is formed, discharge channels are formed each of which is formed by at least two adjacent discharge electrodes, a scanning circuit for supplying selection pulses to the discharge channels by a line-sequential scanning method is provided, signal circuit for applying an image signal to each of the

Abstract: A computer-input stylus which provides thickness control when utilized in conjunction with a computer-implemented software-based drawing application. The input stylus includes a cylindrical body in a conical tip. A color display within the stylus is utilized to illuminate the conical tip with a color indicative of a currently selected color within the software-based drawing application, providing visual color feedback. Thickness selection is accomplished utilizing a thickness selection input actuator mounted to the cylindrical body of the input stylus. The thickness selection input actuator is utilized to vary the thickness of application of a selected color or pattern, while physically varying the thickness of the conical tip of the input stylus, in a manner analogous to utilizing a thicker tip brush.

Abstract: A computer system includes one or more scroll bar sensors for scrolling up and down and left and right in a document or data displayed on the computer's display. The scroll bar sensors include capacitive touchpad sensors and are coupled to an electrical circuit. Localized capacitance charges are caused by the placement of an operator's finger on or near the sensor. These capacitance variations are processed by the electrical circuit to determine the location of the operator's finger on the scroll bar sensor. An operator can cause the computer system to display any section of a document or data by touching different portions of a scroll bar sensor. The computer system 100 also can determine relative motion of the operator's finger as the finger moves from one end of a scroll bar sensor to another end, thereby causing the computer to scroll through the document at a rate proportional to the operator's finger motion.

Abstract: An image display device having a liquid crystal display panel in which display picture elements are arranged according to a dot matrix form includes a control circuit that controls the drive of a source driver and gate driver such that writing of signals for frame display in a horizontal direction is performed during the vertical blanking interval of input image signals. During the vertical blanking interval, the control circuit writes to the source driver each source selection signal of picture elements that are to display the horizontal frame and holds this data. The control circuit then generates sequential gate selection signals from the gate driver while supplying the held output of the source driver to the sources of the picture elements, and supplies horizontal frame display signals to the picture elements.