Patents by Inventor Martin K. Grace

Martin K. Grace 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).

  • Synchronous quantized subcarrier multiplexer for digital transport of video, voice and data
    Patent number: 4999831
    Abstract: This invention addresses the digital transmission of wideband video, narrowband audio, and digital information over information networks. More specifically, the invention involves synchronous quantized subcarrier multiplexing (quantized-SCM) which results in purely electronic multiplexing of voice, data and multiple channel full bandwidth NTSC video for digital transmission over a communcation line and recovery of same signals at a receiving station.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: March 12, 1991
    Assignee: United Telecommunications, Inc.
    Inventor: Martin K. Grace
  • Timing apparatus and method
    Patent number: 4281239
    Abstract: In a projectile scoring system including a transmitter for illuminating the projectile and a plurality of spaced apart sensors providing signals indicative of the time of arrival of the reflected energy at each of the sensors, timing apparatus including counters activated by the sensor signals and deactivated simultaneously at a predetermined later time. The differences between the counts being utilized in a computer to calculate the position of the projectile relative to the sensors.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: July 28, 1981
    Assignee: Motorola Inc.
    Inventors: Michael D. Coon, Martin K. Grace, Steven R. Smith