Patents Represented by Attorney J. M. May
  • Patent number: 4683469
    Abstract: A display terminal adapted to present character information, in any one of a plurality of different display formats, within a display frame having approximately constant dimensions. The terminal preferably includes a programmable CRT controller, first and second character memories, horizontal and vertical deflection circuits for selectably generating output signals having first or second periods, a central processor and circuitry for generating constant frequency dot clock and character clock signals. In establishing each display format, the central processor programs the CRT controller with the display parameters that are appropriate for that format and generates a plurality of display format control signals for controlling the selection of a character memory and the periods of the output signals of the horizontal and vertical deflection circuits.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: July 28, 1987
    Assignee: ITT Corporation
    Inventors: Jeff Elsmore, Kenneth W. Stoorza, Timothy A. Walker
  • Patent number: 4682163
    Abstract: A method for increasing the speed at which characters may be written onto a liquid crystal display of the type in which a plurality of write cycles must be applied to each picture element that is to become visible. The character writing operation is divided into two or more stages each of which preferably includes an equal number of write cycles. During at least those times when an operator is entering characters more rapidly than they can be fully written, the different stages of the writing operations for two or more successive characters are performed simultaneously to increase the apparent writing speed of the display.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: July 21, 1987
    Assignee: ITT Corporation
    Inventor: Forrest E. Brooks
  • Patent number: 4672387
    Abstract: An antenna system which has omnidirectional coverage in azimuth and sectoral coverage in elevation. A main reflector including a reflecting surface has polar symmetry about the Z-axis. It also has a cross section in any plane containing the Z-axis which satisfies the laws of power conservation and reflection. It is determined by the desired far-field pattern and the microwave feed pattern (for example TM.sub.01) employed. Single or dual reflector systems are described. Using the system on "receive" with multiple "feeds", full azimuthal direction finding of incident radiation can be achieved.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: June 9, 1987
    Assignee: International Standard Electric Corporation
    Inventors: William D. Waddoup, Andrew P. Norris
  • Patent number: 4668049
    Abstract: A flat panel liquid crystal display for use in providing single or multi-color display images. The display comprises one or more ultraviolet light sources, a light pipe assembly which includes a plurality of liquid crystal cells that may be addressed via an array of transparent row and column electrodes, and a viewing screen having a plurality of phosphor elements that are located in close proximity and in registry with respective liquid crystal cells. Those phosphor elements and only those phosphor elements that are associated with liquid crystal cells that are in their scattering states are illuminated to form the image to be displayed.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: May 26, 1987
    Assignee: ITT Corporation
    Inventors: Stanley Canter, Paul A. Warg, Forrest E. Brooks
  • Patent number: 4660047
    Abstract: An antenna element including microstrip having a microstrip feed line and ground plane on opposite sides of a substrate, a resonator on the same side of the substrate as the microstrip feed line, and a dipole insulated from the feed line and from the resonator.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: April 21, 1987
    Assignee: ITT Corporation
    Inventors: Ronald I. Wolfson, William G. Sterns
  • Patent number: 4655550
    Abstract: A ferro-electric liquid crystal display in which the individual pixels are addressed via an address matrix that includes one field effect transistor for each pixel, and a plurality of row and column conductors whereby data is written into each pixel to change or to maintain its display condition.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: April 7, 1987
    Assignee: International Standard Electric Corporation
    Inventors: William A. Crossland, Peter J. Ayliffe
  • Patent number: 4653946
    Abstract: A nominal carriage velocity profile is initiated during each carriage positioning interval which enables the carriage to be decelerated and stopped at the proper position for printing. However, the carriage velocity profile can be modified during the positioning interval to avoid decelerating if printing can occur on the fly; i.e., if the print element (and ribbon) are able to complete any necessary positioning by the time the carriage arrives at its printing position. In accordance with the preferred embodiment, the slave microprocessor produces a READY signal in advance of the print wheel arriving at its destination orientation. The READY signal indicates that both the print wheel and ribbon will reach their destinations and be ready for printing within a fixed time interval; e.g., three milliseconds. In response to the READY signal, the master microprocessor inhibits further adjustments in the carriage speed and permits the carriage to assume a "fly" mode.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: March 31, 1987
    Assignee: Qume Corporation
    Inventor: William N. Thanos
  • Patent number: 4639127
    Abstract: Apparatus is described for exposing a layer of photosensitive material to form an image thereon, by passing the photosensitive layer under a row of closely spaced light shutter apertures which are selectively opened and closed. The total light falling on each pixel area at the photosensitive layer is increased by using apertures which are long and thin, and concentrating the light passing therethrough onto a pixel at the photosensitive layer. Two rows of staggered apertures are used. The photosensitive layer is on a transparent substrate, and a reflector lies on a side of the substrate opposite the light apertures, so light passing through the photosensitive layer and substrate is reflected back through the layer to pass twice therethrough. The entire sheet is pre-exposed to light of a level less than a threshold, with the light subsequently passing through each light aperture being sufficient to raise the total exposure beyond the threshold.
    Type: Grant
    Filed: December 10, 1985
    Date of Patent: January 27, 1987
    Assignee: ITT Corporation
    Inventors: Jack Beery, Barry G. Broome
  • Patent number: 4638201
    Abstract: An electronically commutated dc motor having a dome-shaped external rotor and a stator having a double-T-shaped design with the stator consisting of one yoke stack disposed asymmetrically in relation to the longitudinal stator axis and of two pole stacks of which each is provided with an extension on the same side in the longitudinal direction. In the circumferential direction the extensions are provided with lugs.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: January 20, 1987
    Assignee: Standard Elektrik Lorenz Aktiengesellschaft
    Inventor: Josef Feigel
  • Patent number: 4638310
    Abstract: A matrix array type liquid crystal device whose liquid crystal layer is ferro-electric is addressed using strobing pulses applied serially to the members of a set of electrodes on one side of the layer while balanced bipolar data pulses are applied in parallel to the members of a set of electrodes on the other side. The data pulses are twice the length of the strobing pulses. This provides a way of minimizing the exposure of the pixels to `wrong` voltages between consecutive addressing that would tend to drive them to their opposite states.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: January 20, 1987
    Assignee: International Standard Electric Company
    Inventor: Peter J. Ayliffe
  • Patent number: 4626074
    Abstract: A relatively shallow arrangement for providing illumination for a light scattering type display cell employs a transparent sheet in optical contact with the front surface of the cell and a matte black sheet out of contact with the rear surface. The assembly acts as a light guide for light launched into at least one of the transparent sheet from at least one strip lamp. The only light escaping from the display, etc. in the direction of the observer is a proportion of that scattered into non-guided directions by regions of liquid crystal layer selectively set into a scattering state.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: December 2, 1986
    Assignee: International Standard Electric Corporation
    Inventors: William A. Crossland, John R. Brocklehurst, Peter J. Ayliffe, Arthur Atkinson
  • Patent number: 4624560
    Abstract: Apparatus is provided for use in printing systems wherein regions of rupturable subminiature capsules of a layer of capsules are ruptured to release dye that prints an image on an image-receiving sheet. A thin backing sheet is positioned so the layer of capsules lies between the backing sheet and the image-receiving sheet. A rotating brush brushes against a rear face of the backing sheet which is opposite the capsules, to apply pressure against multiple small independent areas of the backing sheet, to deflect each small area of the backing sheet towards the image-receiving sheet to rupture the capsules between them and thereby transfer the dye to the image-receiving sheet.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: November 25, 1986
    Assignee: ITT Corporation
    Inventor: Jack Beery
  • Patent number: 4611802
    Abstract: A paper feeder is described, of the type which includes a cylindrical platen (16) and multiple pressure rollers (18,20) that press paper between themselves and the platen, which is of simple and inexpensive construction. The paper feeder includes a shaft (34) of square cross-section, a group of leaf springs (30) with inner ends mounted on the shaft and outer ends lying under the platen, and a group of roller assemblies (38) mounted on the outer ends of the leaf springs. The inner end of each leaf spring has tabs (40,42) on opposite sides, which are bent down at substantially right angles and which have square slots (46) for closely receiving the square shaft. The group of perhaps five leaf springs are mounted on the shaft with their tabs abutting one another, and with grip rings on opposite ends of the shaft to hold the springs in place.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: September 16, 1986
    Assignee: Qume Corporation
    Inventor: Egon A. Pedersen
  • Patent number: 4607917
    Abstract: The disclosed invention relates to an electro-optical device for use with a facsimile printer, telecopier, etc., designed to accommodate line-at-a-time output of picture information with the aid of an electrically controllable electro-optical substrate made from a transparent electro-optical material, with the optical effect being controlled by applying a voltage between two control electrodes arranged next to each other on the substrate. According to a preferred embodiment of the invention, within the area (4) of the substrate (1) to be controlled, and in addition to the control electrodes (2,3), there is provided at least one additional electrode (7) which may be common to several such areas (4), with each area (4) to be controlled having a corresponding opening (8) in the additional electrode (7) and the two control electrodes (2, 3) being spaced apart from each other on one side of the substrate (1) and the one or more additional electrodes (7) being arranged on the opposite side of the substrate.
    Type: Grant
    Filed: April 19, 1983
    Date of Patent: August 26, 1986
    Assignee: International Standard Electric Corporation
    Inventors: Heinz Ebner, Gabriele I. Koch, Joachim Lauckner, Felix Lutz, Gerhard Seibold, Gerhard Wessel
  • Patent number: 4602852
    Abstract: An acousto-optic deflector system including first and second transducers for producing acoustic waves for interaction with an optic beam in an acousto-optic device. The transducers are driven by signals of differing frequencies (f.sub.1 +.DELTA.f, f.sub.1) in order to produce two deflected optical beams from an incident optical beam launched from a laser. The two deflected beams are detected by a common photodetector whose output is filtered whereby to separate a component which is dependent on the frequency difference. The phase of this component is the relative optical phase of the two deflected optical beams. By determining the phase of the component for different frequencies (f.sub.1, F.sub.1 =f.sub.T etc.), the optical angle of incidence (.theta..sub.i) may be obtained. Alternatively, by frequency modulating both transducer drive signals and appropriately electronically processing the detector output, a signal whose amplitude varies with the optical angle of incidence can be obtained.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: July 29, 1986
    Assignee: International Standard Electric Corporation
    Inventor: John Moroz
  • Patent number: 4589734
    Abstract: The array of electrodes of an active silicon backed matrix addressed liquid crystal cell incorporating a black guest dye arranged in groups whose individual members exhibit contrasting colors, typically, red, blue, green and optionally yellow, whereby a polychromatic image can be displayed.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: May 20, 1986
    Assignee: International Standard Electric Corporation
    Inventors: Barbara Needham, Peter W. Ross
  • Patent number: 4588921
    Abstract: The invention relates to the construction and the mode of operation of vacuum-fluorescent display matrices which, as regards size and manufacturing investment, can compete with LCD versions and have the added advantage of being self-luminous. Between a rear wall plate and a closely adjacent transparent front plate which are both provided on their insides with transparent conductor leads, only the filaments are disposed. The fluorescent material (phosphor) is deposited as spaced segments on the conductor leads of the front plate. For activating the fluorescent segments, the electron stream is redirected, by reversing the polarity of the associated conductor leads, from the rearward electrode to the fluorescent segments on the front plate. Matrix addressing serves the selection of the character elements.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: May 13, 1986
    Assignee: International Standard Electric Corporation
    Inventor: Kurt M. Tischer
  • Patent number: 4575579
    Abstract: In public videotex (Btx) terminals, different pages are displayed successively on the screen in the off-line mode (e.g., advertisements and user instructions). To be able to update such off-line pages at low cost, a page memory in the terminal is constructed as a random-access memory (46). A central operating facility contains an editing device in which the information and control characters required to display an off-line page are produced. These characters are transmitted to the terminal and written into the random-access memory (46). This may be effected automatically when the supply voltage is turned on.
    Type: Grant
    Filed: November 29, 1983
    Date of Patent: March 11, 1986
    Assignee: International Standard Electric Corporation
    Inventors: Gerhard J. Simon, Gerhard Schneider
  • Patent number: D284379
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: June 24, 1986
    Assignee: International Telephone & Telegraph Corp.
    Inventor: Roy K. Fischer
  • Patent number: D284574
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: July 8, 1986
    Assignee: International Telephone & Telegraph Corp.
    Inventor: Roy K. Fischer