Patents Examined by David C. Helms
  • Patent number: 4404466
    Abstract: A lag control electrode is mounted on that portion of a cell constituting a picture element which is disposed on one end portion of an N.sup.+ layer. A gate electrode is provided close to the other end portion of the N.sup.+ layer. Where a picture light enters a solid state image sensor, then a signal charge is generated in a P type semiconductor substrate. The signal charge thus produced is collected in the N.sup.+ layer. Only during the period in which the lag control electrode is impressed with a prescribed level of voltage, then part of the signal charge is trapped in interface states between that portion of a SiO.sub.2 layer which lies below the lag control electrode and the N.sup.+ layer. Only during the period in which the gate electrode is impressed with a prescribed level of voltage, the signal charge collected in the N.sup.+ layer is delivered to the channel layer of a CCD shift register.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: September 13, 1983
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventor: Nozomu Harada
  • Patent number: 4151409
    Abstract: A direct current, high voltage generator is disclosed in which electric power is produced by repeated capacitance changes. In various embodiments of the basic electric circuitry, the required capacitance change is effected by various methods, including, especially in the principal embodiment, the method of capacitance change by radiation-variable capacitors the dielectric material of which is uniquely a non-photoconducting material. This generator is distinctive in two basic ways, namely in that it is a complete d.c. generator without an iron core transformer not merely a voltage augmentor and secondly in that the light-variable dielectric material is different from that of prior art generators.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: April 24, 1979
    Inventor: Louis R. O'Hare
  • Patent number: 4104516
    Abstract: A panel shaped, proximity type, x-ray image intensifier tube for medical x-ray fluoroscopy use having all linear components and yet a high brightness gain, in excess of 4,000 cd-sec/m.sup.2 -R, the tube being comprised of a rugged metallic tube envelope, an inwardly concave metallic input window, a directly viewable full size output display screen, and a scintillator-photocathode screen having a thickness of at least 200 microns for a high x-ray photon utilization ability as well as x-ray stopping power, the scintillator-photocathode screen being suspended on insulators within the envelope and in between the input window and the output screen.
    Type: Grant
    Filed: January 28, 1977
    Date of Patent: August 1, 1978
    Assignee: Diagnostic Information Inc.
    Inventors: Shih-Ping Wang, Charles D. Robbins, Elisha Merritt
  • Patent number: 4081671
    Abstract: An arrangement for cutting workpieces with a scanning device having a signalling photoresistor which detects markings, with an attached control device which contains a first timing element to which a switch for reducing the rate of speed is connected includes an OR-element connected between the first timing element and the switch with a further timing element connected by means of an AND-element to the input and output of the timing element with the input of the further timing element being connected to the output of the AND-element and the output of the further timing element being operationally connected to the input of the OR-element.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: March 28, 1978
    Assignee: Messer Griesheim GmbH
    Inventors: Dietrich Bohme, Gunter Hellmut Schumann, Gunter Hahn, Rolf Jung
  • Patent number: 4079252
    Abstract: A measuring system includes a scale grating carried on one of two relatively movable bodies and an index grating carried on the other. The scale grating is illuminated directly in such a way that light passing from it to the index grating is at least partially diffuse. Detector means are provided to respond to the resulting spatially periodic distribution of illumination.
    Type: Grant
    Filed: August 20, 1976
    Date of Patent: March 14, 1978
    Assignee: Ferranti Limited
    Inventor: David George Brake
  • Patent number: 4058735
    Abstract: The invention relates to an opto-electronic contact mechanism in which a potential of an input circuit is separated from the potential of an output circuit by two optocouplers. The optocouplers contain an excitor circuit having a radiation transmitter and also a radiation receiver optically coupled to the transmitter, all within a common housing. The mechanism utilizes a pulsed operational mode to distinguish normal operation from erroneous operation.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: November 15, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventor: Franz Tippner