Patents by Inventor Harland G. Hopkins

Harland G. Hopkins 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).

  • Devices, systems and methods for composite signal decoding
    Patent number: 5416843
    Abstract: A device and method for composite signal decoding is provided in which an analog to digital converter (18) digitizes an incoming composite signal. The digitized signal is transmitted to a least mean squares estimator (24). Least mean squares estimator (24) generates composite estimates which are filtered in filter (26). A phase extractor (28) extracts information on the phase between the sampling frequency and the incoming composite signal. Any phase shift existing between a left channel and right channel of the incoming composite signal are compensated in phase compensator (30). A channel extractor (34) extracts a sum and a difference of the left and right channels based on the phase information generated by phase extractor (28). An interpolator (36) adds and subtracts the information generated by channel extractor (34) to isolate the left and right channel signals.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: May 16, 1995
    Assignee: Texas Instruments Incorporated
    Inventor: Harland G. Hopkins
  • Anti-lock brake control system
    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
  • Anti-lock brake control system
    Patent number: 4664453
    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: October 21, 1985
    Date of Patent: May 12, 1987
    Assignee: General Motors Corporation
    Inventors: Alexander Kade, Harland G. Hopkins, Mutasim A. Salman
  • Anti-lock brake control system
    Patent number: RE33557
    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: June 8, 1990
    Date of Patent: March 19, 1991
    Assignee: General Motors Corporation
    Inventors: Alexander Kade, Harland G. Hopkins, Mutasim A. Salman