Patents Examined by Alvin Oberley
  • Patent number: 4808985
    Abstract: A character pattern converting circuit is adapted to control a character pattern expressed in the form of a dot matrix and received from a character generator and to deliver the character pattern so converted, and includes a first switching circuit for switching the order of bits constituting the character pattern provided from the character generator; a matrix circuit having shift registers arranged in the form of a matrix, the shift registers being adapted to shift upon permitting the character pattern from the first switching circuit to be entered in succession in the row or column direction thereof and to be delivered in the row direction thereof, respective bits of the character pattern simultaneously or selectively in conformity with the mode of the concerning conversion; a second switching circuit for switching the order of the bits constituting the character pattern provided from the matrix circuit in conformity with the mode of the concerning conversion; and a matrix control part for controlling the
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: February 28, 1989
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Jiro Tanuma, Tadashi Kasai
  • Patent number: 4808978
    Abstract: A device for weakening the incident light passing through a transparent emissive display system so as not to drown the emitted light is disclosed which utilizes two polarizing filters one at least of which is placed before the screen so as to selectively attenuate the incident light. A photoelectric cell measures this incident light and controls a motor which rotates one of the filters so as to adjust the attenuation to the initial intensity.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: February 28, 1989
    Assignee: Sintra
    Inventor: Michel Vernay
  • Patent number: 4807942
    Abstract: The hydraulic brake system with slip control comprises two master cylinder pistons for the operation of the vehicular brakes and in which hydraulic medium tapped from the wheel brake during slip control is returned to the wheel brakes from an auxiliary pressure source via a master cylinder piston gasket acting as check valves. The operating stroke of the master cylinder pistons is limitable by suitable pressurization of a positioning piston. An open connection between the working chambers of the master cylinder and a reservoir is provided, in the brake-released position, solely via the control valve so as to enable the brake circuits connected with the master cylinder to be pressurized right from the beginning of the braking action.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: February 28, 1989
    Assignee: ITT Industries, Inc.
    Inventor: Juan Belart
  • Patent number: 4805854
    Abstract: A gating circuit and method for controlling the output of data from the scanner of a heat detector in response to a bi-polar signal indicating the presence of an object within the scanning window of the heat detector; stores the data output; senses the stored data with respect to a reference signal with a differential amplifier responsive to the data output; gates the data output to storage by a first gate interconnecting the data output with the differental amplifier; generates control signals for opening and closing the gate with different states of the bi-polar signal for controlling the gate such that the reference signal represents the last immediate data output; detects the difference between the stored peak value and the highest data value of the output data subsequent to turning off a first gate; and using a second gate interconnecting the output of the sensor with the detector and controlled by the control signals to be open with the first gate closed and closed with the first gate open.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: February 21, 1989
    Assignee: Southern Railway Company
    Inventor: Roland A. Howell
  • Patent number: 4807295
    Abstract: A loudspeaker design that eliminates the close tolerance magnetic gap used in conventional loudspeakers and in which motion of the diaphragm is produced by the attraction and repulsion of the magnetic poles of a solenoid and a permanent magnet. In the preferred embodiment, the permanent magnet is affixed to the frame, and the solenoid fits loosely about it, the two being coaxial. Elimination of the magnetic gap relaxes the dimensional tolerances of the loudspeaker as well as the possibility that heating will cause the coil to expand to the point of interfering with the pole pieces. Also, the design of the present invention results in the driving portion of the magnetic field being spread over a relatively larger volume of space, and this reduces the production of motion-induced voltages in the windings of the drive coil and improves linearity.
    Type: Grant
    Filed: August 18, 1987
    Date of Patent: February 21, 1989
    Assignee: Dumbroski and Hanson Industrial Designs, Inc.
    Inventor: Earl L. Dombroski
  • Patent number: 4806923
    Abstract: An electronic apparatus has a solar battery and a liquid crystal display unit for displaying a plurality of digits. A plurality of column electrodes are provided for each digit, and a plurality of common electrodes are provided for all the digits. A regulator receives and stabilizes the output voltage of the solar battery. A pulse generator generates a clock pulse signal. It is an oscillator with CMOS structure to permit implementation as a LSI. A CPU is driven by the stabilized voltage and the clock pulse signal to provide data to be displayed on the display unit. A liquid crystal driver circuit applies common signals, which can assume two different voltage levels and have a waveform with the logic level thereof inverted for every one held cycle period, to the common electrodes. The driver circuit applied column signals of either one of the two voltage levels corresponding to the display data to the column electrodes.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: February 21, 1989
    Assignee: Casio Computer Co., Ltd.
    Inventors: Tsuguo Yanai, Yukio Inagaki, Shoji Matsuo, Hidetaka Fujisawa
  • Patent number: 4806917
    Abstract: An X-Y direction input device used, for example, in a graphic display apparatus includes some members enclosed in a casing and requiring electrical connection to each other. The casing is divided into upper and lower cases one of which has some chamber defining walls or ribs and the other has associated projections or pins, so as to accept the members previously connected physically, electrically to each other in the respective chambers and suppressingly support them in the chambers by the projections or pins.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: February 21, 1989
    Assignee: Alps Electric Co., Ltd.
    Inventor: Junichi Hosogoe
  • Patent number: 4803476
    Abstract: A bit-mapped graphics terminal capable of displaying graphs as well as text permits character and screen attributes to be controlled with minimal memory requirements, and is capable of operating as an interlaced display and as a non-interlaced display. A first memory stores a display bit map that defines characteristics of individual picture elements of the display. A second memory stores attribute information for individual groups of the picture elements of the display.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: February 7, 1989
    Assignee: Visual Technology Incorporated
    Inventors: Edward Knapton, Ernest Vincent
  • Patent number: 4801932
    Abstract: A display apparatus using a light-transmitting ceramic having an electrooptic effect. A voltage application head has at least a pair of electrodes which contact the light-transmitting ceramic. The head is driven by a head driver so as to scan across a surface of the light-transmitting ceramic. Electrodes may be formed also on the surface of the light-transmitting ceramic. A bright and dark pattern caused by double refraction in the light-transmitting ceramic is seen through a polarizing plate.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: January 31, 1989
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoneharu Takubo, Yasutaka Horibe, Nobue Yamanishi, Eiji Fujii, Hideyuki Okinaka
  • Patent number: 4799049
    Abstract: A control that uses movement to position an image on a screen for use with means for detecting the movement and a microprocessor that interprets the movement detected and means for displaying an image on a screen, comprising a body and a bar having a bar axis coupled to the body so that the bar is rotatable with respect to the body about the bar axis and is slidable with respect to the body in a direction parallel to the bar axis thereby permitting movement of the bar with respect to the body which is the movement that is used to position an image on a screen.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: January 17, 1989
    Inventor: Harold C. Avila
  • Patent number: 4796957
    Abstract: When excessive acceleration slip of a driving wheel is detected by wheel speed sensors attached to driving and non-driving wheels, an electronic control unit provides first and second control signals to a change-over valve and a control valve, respectively. The change-over valve operates in accordance with the first control signal to supply hydraulic pressure from a hydraulic pump to control a cut-off valve to thereby cut off communication between a master cylinder and a wheel cylinder. At the same time, hydraulic pressure from the hydraulic pump is fed to the wheel cylinder through the change-over valve and the control valve to brake the driving wheel. The control valve operates in accordance with the second control signal to increase or decrease the pressure in the wheel cylinder thereby adjusting the braking force for the driving wheel.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: January 10, 1989
    Assignee: Nippondenso Co., Ltd.
    Inventors: Hideo Wakata, Yuzo Imoto, Toshihiro Takei, Yoshiyuki Hattori
  • Patent number: 4796019
    Abstract: The invention relates to a display system using a remote control transmitter handunit having both a "pointing function" capability for moving a cursor displayed on a display screen by changing the angular position of the remote control handunit, and the capability of sending dedicated function data directly to the receiver. Thus, numeric data representing, for example, channel number or time of day, being unsuitable for selection from a menu is directly transmitted along with "pointing function" data transmission.
    Type: Grant
    Filed: February 19, 1987
    Date of Patent: January 3, 1989
    Assignee: RCA Licensing Corporation
    Inventor: Victor Auerbach
  • Patent number: 4794390
    Abstract: An alphanumeric display including an array of 42 electrically energizable, light-emitting or reflecting segments which, when selectively energized, are capable of forming legibly all numerals and upper and lower case alphabet letters and/or mathematical and punctuation symbols. The array disclosed is characterized by arrangement of the light-emitting or reflecting elements in closely nested relation to form a vertically disposed rectangular display. A solid state system employing the display means including light-emitting diodes and switching transistors is disclosed.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: December 27, 1988
    Inventor: Jeffrey H. Lippman
  • Patent number: 4787482
    Abstract: A self-energizing disc brake of the spreading type is disclosed. In the disc brake rotatable friction discs provided on opposite sides with linings are adapted to be brought into engagement with radial braking surfaces in a housing by an actuator assembly. The actuator assembly comprises pressure plates located between the discs and centered by pilot lugs, and balls located in oppositely inclined recesses in the adjacent faces of the pressure plates. At least the linings which engage with the pressure plates are separated into annular rings by an annular groove, and the groove is substantially coincident with a pitch circle of constant diameter upon which the recesses lie in an angularly spaced relationship. The groove increases the degree of cooling in the regions of the base of the recesses, thereby reducing the likelihood of hot spotting occurring in such regions.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: November 29, 1988
    Assignee: Lucas Industries Public Limited Co.
    Inventors: Roy Campbell, Graham J. Gornall
  • Patent number: 4787483
    Abstract: A transmission band assembly including a circular band member 12 with connector members 14 and 16 disposed on the exterior of the ends of the band member, a friction lining 22 that is bonded to the interior surface of the band member 12, a first pair of spaced slot 24 that extend from one end of the band member 12 over approximately one half the length of the band member, and a second pair of slots 26 that are aligned with the first pair of slots 24 and that extend over the remaining length of the band member. A hole 28 extends therefor through the band member 12 and the lining 22 between the slots 24 and 26.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: November 29, 1988
    Assignee: Advanced Friction Materials Co.
    Inventor: Oscar E. Stefanutti
  • Patent number: 4788539
    Abstract: A digital device for visually displaying the value of a generally continuously varying function, such as car speed. The device displays subranges of a full scale, putting them individually in a viewing area. The displayed subranges in the viewing area will be replaced as required to permit representation of the input function over the full scale. The device allows selection of a new subrange with the property that the input function value initially will be at an interior position in the new subrange, thereby preventing repeated rapid switching between subranges. The subrange display can be defined using scale markers in just a few fixed positions in the viewing area.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: November 29, 1988
    Inventor: Roger G. Frey
  • Patent number: 4784443
    Abstract: A method and apparatus for monitoring and controlling a slip-controlled brake system wherein the wheel rotational behavior is ascertained and wherein, on detection of a tendency to lock, the braking pressure in the wheel brakes is kept constant or varied temporarily. The slip control of the front wheels is deactivated on the occurrence of a malfunction of the slip control unit which would result in locking or an inadmissible strong tendency to lock of a first rear wheel and deactivating or maintaining the slip control of the front wheels as a function of the wheel rotational behavior of the second rear wheel.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: November 15, 1988
    Assignee: Alfred Teves GmbH
    Inventor: Lutz Weise
  • Patent number: 4783127
    Abstract: A brake control system is described that prevents a wheel lockup condition by identifying the brake pressure that produces the maximum possible braking effort during each brake pressure application period and applying a predetermined fraction of the identified pressure after an incipient wheel lockup condition is sensed. The predetermined fraction provides for adaptive adjustment of the brake pressure if the identified brake pressure is in error until a pressure is applied that produces substantially the maximum possible braking effort.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: November 8, 1988
    Assignee: General Motors Corporation
    Inventors: Alexander Kade, Harland G. Hopkins, Mutasium A. Salman
  • Patent number: 4783648
    Abstract: In a multiwindow system in which a plurality of windows are set on a display screen at positions such that these windows partially overlap and the display priority and position of each window can be arbitrarily changed, when the operator instructs to change the display priority of the window, a check is automatically made to see if there exists the window which will be completely covered by the other windows having priorities higher than that of this window and will fully disappear from the screen if the display priority is changed or not. If such a window is found out, the display priority of this window is changed in the state in which this window is automatically shifted to the position where a part of this window can be seen on the screen, thereafter the window is displayed on the screen.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: November 8, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Homma, Masayuki Satta
  • Patent number: 4782328
    Abstract: A convenient predetermined rectangular passive area is converted into a touch screen suitable for feeding X and Y cartesian coordinate data into a computer by employing ambient light as the medium to sense positioning of a pointer brought near to any desired coordinate location of the touch screen. Such "pointer" can be a stylus, rod, dowel, finger, pencil, or similar relatively long, slim element readily movable by hand and capable of reflecting a significant proportion of incident ambient light or of creating sharp shadows. The passive area can be any selected rectangular area of suitable size in space or in the air, or on or near an inert panel of plywood, hardboard, sheetrock, or flat wall, etc., or in a region located before a video or tracking screen, selection chart or informational items, for example, a passive custom keyboard.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: November 1, 1988
    Assignee: Product Development Services, Incorporated
    Inventor: Michael B. Denlinger