Abstract: A system and method for tracking a moving object very accurately at short ranges in general, and a handwriting input device such as a pen in particular. The method is based on measuring times of arrival of ultrashort RF pulses transmitted by the pen to an array of receivers. Dealing with the ultrashort events is done by "strobing" the pen position. To achieve the necessary resolution, on the order of 0.25 mm, the times of arrival of the pulses are determined by sampling the pulses digitally and fitting appropriate mathematical functions to the samples pulses. The time jitter is averages over many sweeps, and a dedicated receiver is used for synchronization.

Abstract: Portable communication equipment having a virtual image display including display electronics and optics for providing a virtual image in the display, cursor electronics connected to the display electronics for producing a manually controllable cursor virtual image in the display, and manual controls mounted on the portable communication equipment and externally accessible by an operator. The manual controls are connected to the cursor electronics for controlling the position and function of the cursor virtual image to provide functions such as pull-down menus and image selection.

Abstract: A gas flat display tube is disclosed including a glass container having a discharge gas therein; a plurality of cathodes extending horizontally and arranged by a predetermined interval in the glass container, for emitting electrons; a plurality of anodes extending vertically and arranged by a predetermined interval on one side of the glass container, for absorbing the emitted electrons; a plurality of phosphors arranged in a matrix form on the plurality of anodes and becoming luminous by the electrons absorbed into the anodes; and a plurality of gates extending vertically and arranged by a predetermined interval on the phosphors, for controlling the emitted electrons to be absorbed into the anodes.

Abstract: A video memory stores a plurality of image data, and an attribute storage means stores image attributes indicating whether or not the respective image data require expansion of a luminance range. An image data conversion means receives an image data digital signal output from the video memory and an image attribute signal output from the attribute storage means. When the image attribute signal provides an instruction to expand the luminance range, the image data conversion means outputs, to a display unit, a display data analog signal representing a higher luminance value, as compared with the display data analog signal to be output therefrom when the image attribute signal provides no instruction to expand the luminance range.

Abstract: A mechanic encoder having a single conductors ring is provided. The arrangement between the a first and a second conducting fingers and the conductors ring are specially arranged such that the sequential signal pairs can be accurately and precisely generated, i.e. the resolution is accordingly increased. The conductors ring is configured by a plurality of conducting plates which are aligned with the center of the encoding wheel or in an alternative, those conducting plates are offset from the center of the center of the encoding wheel. The conductors ring is configured with a plurality of conducting portions and insulating portions which are alternatively contacted with the conducting fingers. The encoding wheel is powered by a third conducting finger and a sequential signal pairs can be detected from the output of the first and second conducting fingers. The signal pairs can be further processed and recognized to determine the rotation of the encoding wheel.

Abstract: A computer implemented environmental process control apparatus for displaying the condition of selected attributes of a plurality of environmental control components or zones within a facility. One embodiment of the apparatus is configured to create a river of time display including a rivulet having an historical and future data segment corresponding to each of the plurality of components or zones. In order to create the river of time, the apparatus includes a memory having a plurality of first instances of a data structure and a plurality of second instances of a data structure for storing historical and future data, respectively, means for establishing a look back value, means for establishing a look forward value, an historical data processing module, a future data processing module, a graphic engine, and a data access logic device. The historical and future data processing modules receive and commnunicate historical and future data, respectively, to the first and second instances of the data structure.

Abstract: LED arrays where a plurality of LEDs are vertically arranged are lit up in luminance corresponding to tone values on digital image data. Light beams in line emitted from the LED arrays are scanned in a horizontal direction to display a two-dimensional image. Clocks A, B, C are selectively gated according to the tone values D0, D1 on the digital image data to generate a drive pulse for driving each of the LEDs on the LED arrays. Each LED thus emits light in luminance corresponding to the tone value on the digital image data. Pulse widths of the clocks A, B, C are changed by one screen. Luminance of each light emitting element corresponding to the tone data on the digital image data is thus changed to increase the substantially representable number of tones.

Abstract: A portable, light weight support stand for vertical mounting and use of a flexible digitizer. The stand is placed against a wall or other vertical structure so that writing pressure on the digitizer is supported by the wall and not by the stand. The entire structure is supported by legs extending at an angle from the stand to a floor adjacent to the supporting wall. The result is a very light weight, highly portable structure that provides all of the support necessary to maintain writing operations on a flexible digitizer while avoiding the weight and awkwardness of conventional rigid digitizers and support stands.

Abstract: Portable communication equipment having a virtual display including display electronics and optics for providing a virtual image in the display, a virtual control panel image viewable in the virtual display as a portion of the virtual image and cursor electronics connected to the display electronics for producing a manually controllable cursor virtual image in the display. The virtual image control panel is connected to be operable with the cursor virtual image and further connected to operate the portable communication equipment. Manual controls, connected to the cursor electronics for controlling the position and function of the cursor virtual image, are mounted on the portable communication equipment and externally accessible by an operator.

Abstract: Registration of organ images, such as myocardial images obtained by myocardial perfusion scintigraphy, is performed by an elastic transformation which includes a rigid transformation, a global affine transformation, and local transformations. The elastic transformation eliminates normal morphological variances such as variances in orientation, size and shape, so that the remaining differences represent important functional differences. The method may be used to register a patient's organ against a template obtained by averaging organ images from many patients. For scintigraphic images the boundary of the organ is determined by a "segmentation" procedure involving the analysis of spatial derivatives of the count density. After the elastic transformations of the surface of the organ, the scintigraphic count densities are redistributed. The method decreases the effects of operator variability and increases the reliability of diagnoses of organ irregularities.

Abstract: An integrated image-input type display unit employs a conventional liquid crystal display panel and is capable of optically writing an original image directly at a high resolution into liquid crystal display panel and electrically reading the image. This unit has an image input/output device comprising a liquid crystal cell which contains light-sensitive molecules. The light-sensitive molecules are capable of changing their structure to a first molecular structure when being irradiated with light of a first wavelength range and to a second molecular structure when being irradiated with light of a second wavelength range, and are further capable of changing their alignment in accordance with the structural change of the light-sensitive molecules.

Abstract: A pseudo-synchronizing signal generator for use in a digital image processing apparatus is disclosed.

Abstract: A data processor in which special regions 31a, 31b are set in the backmost screen, and comprises means for specifying the functions to be started corresponding to them, and means for registering the specified special regions 31a, 31b and the function to be started corresponding to them in correspondence to a specific wallpaper 31. When coordinates data of the position selected by the cursor in the backmost screen is included in the special regions 31a, 31b, the function registered in correspondence thereto is started. In such constitution, complicated operation for starting up a required function by accurately selecting a small icon by the cursor is eliminated, and the working efficiency and controllability are enhanced.

Abstract: A computer system is provided which employs a hardware rotation unit capable of rotating a raster-scan portrait image by 90 degrees in a clockwise or counter-clockwise direction in order to create a landscape image on a raster-scan display device. Rotation of a portrait image is accomplished by a mapping of pixel information associated with the portrait image to corresponding frame buffer locations necessary to properly display the portrait image as a landscape image. A video controller incorporating the hardware rotation unit stores only pixel information associated with the landscape image in a frame buffer. Dedicated circuitry within the hardware rotation unit allows full support of portrait image data read and write operations involving the landscape image pixel information stored in the frame buffer.

Abstract: In a TFT liquid crystal display device using a DHF liquid crystal, the DHF liquid crystal is alienable to a first alignment state in which liquid crystal molecules are substantially aligned to a first direction, to a second alignment state in which the liquid crystal molecules are substantially aligned to a second direction and to an arbitrary intermediate alignment state between the first and second alignment states, in accordance with a voltage applied between the pixel electrodes and the opposing electrode. One of a pair of polarization plates has an optical axis set in substantially an intermediate direction between the first and second directions. The optical axis of the other polarization plate is set perpendicular to the optical axis of the former polarization plate. A pulse having a voltage whose absolute value corresponds to a display gradation and whose polarity changes frame by frame is applied to the DHF liquid crystal for each pixel in the selection period of that pixel.

Abstract: A trace coloring system enhances signal information that is provided to a user of a signal measurement device, for example, a digitizing oscilloscope or spectrum analyzer, having a color display for displaying graphical depictions of electrical signals. Trace coloring logic (hardware, software, or a combination thereof) colors a trace with different colors, each indicating a corresponding range of signal values. As an example, in the context of an oscilloscope, the trace may be colored with various colors to visually indicate which areas of the trace correspond to particular logic levels. A first color may be allocated to a logic low ("0"), a second color to a logic high ("1"), a third color to an indeterminate range that is between logic low and high, and a fourth color to an extreme value that is outside a desired or acceptable predefined logic range. In the preferred embodiment, the trace coloring logic is implemented in software that is executed by a processor.

Abstract: The present invention provides a method and system for providing relevance-enhanced image reduction in computer systems. Using such a method and system, information including images can be displayed in a display area that is smaller than the display area for which the information was designed while accurately conveying the overall content of the information. A computer system in which the present invention operates includes a computer connected to a display device and a secondary storage device. A reducer is stored in the secondary storage device for execution by the computer. Additionally, data regarding an image to be displayed on the display device is stored in the secondary storage device. In operation, the computer receives data regarding an image to be displayed from the secondary storage device. The reducer reduces the image by first cropping the image and then scaling the image. Lastly, the computer displays the reduced image on the display device.

Abstract: A processor based method for recognizing, capturing and storing tabular data receives digital-computer data representing a document either as a pixel-format document-image, or as formatted text. Within the digital computer, either form of the digital-computer data is processed to locate tabular data present therein. After a table has been located, tabular data is extracted from cells present in either form of the digital-computer data. The extracted tabular data is stored into a database present on the digital computer.

Abstract: A method for scaling a portion of an image shown on the display of a PDA is disclosed. After scaling, the display of the PDA switches to show the scaled view of the portion of the image. This method essentially involves the scaling of a first set of display information which forms the portion of the image, into a second set of display information which makes up the scaled view. During the scaling process, a series of look-up tables containing display conversion information are generated. An address-indexing technique is then used with the look-up tables to achieve an efficient and fast scaling process. The method also employs a smoothing technique to provide a more pleasing scaled view.

Abstract: In an image display apparatus which has a multi-electron beam source in which a plurality of electron emission elements are connected in a matrix pattern using a plurality of data electrodes and a plurality of scanning electrodes, and a fluorescent screen having phosphors of three primary colors R, G, and B corresponding to the electron emission elements, natural white color emission is obtained while suppressing a decrease in G luminance, using, e.g., a checkerboard layout which has a G spatial resolution higher than the R or B spatial resolution and includes more G phosphors than the R or B phosphors.