Patents by Inventor George Nicholas Eberl

George Nicholas Eberl 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).

  • Method and apparatus for AM digital broadcasting
    Patent number: 6487256
    Abstract: A method for AM in-band-on-channel (IBOC) digital audio broadcasting (DAB) uses a center channel signal in a central frequency band of an AM radio channel, the center channel signal is modulated by first and second versions of the program material to be transmitted. Sub-carriers in a upper and lower sidebands of the AM radio channel are modulated with addition digitally encoded portions of the program material. The upper sideband lies within a frequency band extending from about +5 k Hz to about +10 kHz from a center frequency of the radio channel and the lower sideband lying within a frequency band extending from about −5 k Hz to about −10 kHz from the center frequency of the radio channel. The center channel signal the upper and lower sideband sub-carriers are transmitted to receivers.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: November 26, 2002
    Assignee: Ibiquity Digital Corporation
    Inventors: Brian William Kroeger, E. Glynn Walden, George Nicholas Eberl
  • Method and apparatus for AM digital broadcasting
    Patent number: 6243424
    Abstract: A method for AM in-band-on-channel (IBOC) digital audio broadcasting (DAB) uses a center channel signal in a central frequency band of an AM radio channel, the center channel signal is modulated by first and second versions of the program material to be transmitted. Sub-carriers in a upper and lower sidebands of the AM radio channel are modulated with addition digitally encoded portions of the program material. The upper sideband lies within a frequency band extending from about +5 k Hz to about +10 kHz from a center frequency of the radio channel and the lower sideband lying within a frequency band extending from about −5 k Hz to about −10 kHz from the center frequency of the radio channel. The center channel signal the upper and lower sideband sub-carriers are transmitted to receivers.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: June 5, 2001
    Assignee: iBiguity Digital Corporation
    Inventors: Brian William Kroeger, E. Glynn Walden, George Nicholas Eberl