Patents by Inventor Robert L. Cloke

Robert L. Cloke 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).

  • Data processing system including encoder, decoder and write precompensator, using run length limited code
    Patent number: 4691254
    Abstract: A data processing system employs a run-length limited code and incorporates an encoder and decoder sharing common circuits, including a data shift register, a code shift register and a write precompensation logic circuit. Data bits are processed as single words or double words depending upon the pattern of data bits as they are shifted.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: September 1, 1987
    Assignee: Priam Corporation
    Inventor: Robert L. Cloke
  • Phase detector with independent offset correction
    Patent number: 4599570
    Abstract: A method and apparatus of offset correction which can be applied to control systems, primarily phase-locked-loop systems, and which permits sampling of the error signals for use as an auxiliary input to the system in order to center the error signal around zero.
    Type: Grant
    Filed: July 21, 1982
    Date of Patent: July 8, 1986
    Assignee: Sperry Corporation
    Inventor: Robert L. Cloke
  • Composite filter/differentiator
    Patent number: 4506236
    Abstract: There is shown and described a relatively simple electronic circuit using few discrete components which is used to replace the filter and delay line differentiator in existing circuits. The new circuit provides a simultaneous output of even and odd signals which have the same transfer function except for the derivative operation. The circuit is especially useful in read and write channels of a disk drive apparatus.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: March 19, 1985
    Assignee: Sperry Corporation
    Inventor: Robert L. Cloke
  • System for recording and reading back data on a recording media
    Patent number: 4122501
    Abstract: A system for detecting data from and recording data on a recording media whereby a single clocking signal generator is utilized for generating the clocking signal both during the recording of data on and the reading of data from the recording media.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: October 24, 1978
    Assignee: Sperry Rand Corporation
    Inventors: Frank J. Sordello, Robert L. Cloke
  • Tow mode harmonic and nonharmonic phase detector
    Patent number: 4080576
    Abstract: A phase detector for use in data systems which recovers data from a recorded media, which phase detector operates in a nonharmonic mode during the period of synchronization of the clock frequency and phase with that of preamble data, and operates in a harmonic mode during actual data recovery.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: March 21, 1978
    Assignee: Sperry Rand Corporation
    Inventors: W. Donald Huber, Robert L. Cloke
  • Current controlled oscillator
    Patent number: 4071832
    Abstract: An oscillator utilizing a pair of transistors interconnected with a resonance circuit in the collector circuits thereof such that by regulation of the current flow to the connected emitters, the frequency of oscillation is regulated.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: January 31, 1978
    Assignee: Sperry Rand Corporation
    Inventor: Robert L. Cloke
  • Sinusoidal oscillator with electronically variable frequency
    Patent number: 4003000
    Abstract: A sinusoidal oscillator including means for electronically varying the frequency of oscillation by altering the phase angle of the amplifier circuit phase shift.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: January 11, 1977
    Assignee: Sperry Rand Corporation
    Inventors: Frank J. Sordello, Robert L. Cloke