Patents by Inventor Roy M. Christensen

Roy M. Christensen 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 and horizontal detail signal processor
    Patent number: 4386434
    Abstract: A video signal is separated into a broad area luminance signal having attenuated vertical and horizontal detail components and a composite detail signal having horizontal and vertical detail components in a predetermined ratio. The broad area luminance signal is combined with the composite detail signal in desired proportions to provide continuous control of the picture detail from soft to sharp in all directions of reproduced images.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: May 31, 1983
    Assignee: RCA Corporation
    Inventors: Walter G. Gibson, Roy M. Christensen
  • Sound field transmission system surrounding a listener
    Patent number: 4316058
    Abstract: Systems for uniformly reproducing a sound field surrounding a listener are disclosed utilizing three channels of audio information signals. One channel provides signals representative of total sound pressure (a sum signal) and the two remaining channels provide orthogonal pressure gradients (difference signals) representative of location of sound sources which produce the sound field. FM radio systems utilizing the three channel technique for providing surround stereophonic sound are also described.
    Type: Grant
    Filed: May 9, 1972
    Date of Patent: February 16, 1982
    Assignee: RCA Corporation
    Inventor: Roy M. Christensen