Patents by Inventor Philip Stephen Crosby

Philip Stephen Crosby 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).

  • Monochrome presentation of demodulated color signals
    Patent number: 4092666
    Abstract: This invention relates to the display, in monochrome, of color television component decoded signals red, green and especially blue, and particularly to a method of displaying transmission and recording system produced defects of color television signals which gives improved visual perception of the defects in the chrominance signal thereof in National Television System Committee and Phase Alternation Line color television systems.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: May 30, 1978
    Assignee: Tektronix, Inc.
    Inventors: Charles Wesley Rhodes, Philip Stephen Crosby
  • Phase locked demodulator
    Patent number: 4051440
    Abstract: A phase detector provides a voltage output which depends upon the phase difference between a limited input signal and a reference signal. The phase detector increases the dynamic range of the resultant phase locked loop. An embodiment which illustrates the capability of the design is a SECAM color difference signal demodulator.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: September 27, 1977
    Assignee: Tektronix, Inc.
    Inventors: Larry A. Nelson, Philip Stephen Crosby
  • Fast recovery limiting and phase inverting amplifier
    Patent number: 3949317
    Abstract: An amplifier comprising a paraphase amplifier and a differential amplifier for converting a signal voltage to a signal current that is linearly related to an input voltage between two well-defined output current limits and further having a dynamic range that is an appreciable fraction of the supply voltage and having low input and output impedance.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: April 6, 1976
    Assignee: Tektronix, Inc.
    Inventor: Philip Stephen Crosby
  • Wideband DC current amplifier
    Patent number: 3939434
    Abstract: A wideband DC current amplifier comprising a pair of transducers, the collector of the input transistor being connected to it's base through a compensating resistance and directly to the base of a second transistor is provided.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: February 17, 1976
    Assignee: Tektronix, Inc.
    Inventor: Philip Stephen Crosby