Patents by Inventor Francis C. Marino

Francis C. Marino has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Vertical deflection circuit
    Patent number: 3970896
    Abstract: A vertical deflection circuit which vertically deflects the electron beam of a cathode ray tube in response to vertical synchronizing pulses comprises a vertical deflection coil having one end connected to a reference voltage source and the other end connected to a first and second current generating means. The first current generating means generates a current having a repetitive sawtooth waveform which is in synchronism with vertical synchronizing pulses; and the second current generating means generates a constant current whose amplitude is selectively adjustable to control the vertical starting position of the electron beam of the cathode ray tube.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: July 20, 1976
    Assignee: Redactron Corporation
    Inventor: Francis C. Marino
  • Binary switching video amplifier
    Patent number: 3946275
    Abstract: A video amplifier for driving an electron beam intensity controlling electrode of a cathode ray tube comprises at least one solid state high speed binary switch which is connected via a coupling capacitor to the controlling electrode while a D.C. restoration means eliminates the chance of any droop in D.C. level of the signal fed to the controlling electrode.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: March 23, 1976
    Assignee: Redactron Corporation
    Inventor: Francis C. Marino
  • Data terminal for connection to telephone or teleprinter facilities
    Patent number: 3934088
    Abstract: A data communication terminal with a single data communications means is selectively connected via a first data coupler to a dialed telephone facility or via a second data coupler to a teleprinter facility.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: January 20, 1976
    Assignee: Redactron Corporation
    Inventor: Francis C. Marino
  • Horizontal deflection circuit
    Patent number: 3931545
    Abstract: The current flowing through the horizontal deflection coil of a cathod ray tube is controlled by a transistor which is switched between saturation and cut off by a circuit having a pulse generator for generating a pulse in response to a horizontal synchronizing pulse. The leading edge of the generated pulse is delayed before being applied to the controlling transistor which switches sometime thereafter due to the storage time of the transistor. To insure that the blanking of the electron beam of the tube takes place during the retrace time, the blanking interval is set to occur a period of time after the horizontal synchronizing signal which is less than the sum of the storage time of the transistor and the time which the leading edge of the generated pulse is delayed.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: January 6, 1976
    Assignee: Redactron Corporation
    Inventor: Francis C. Marino