Patents by Inventor David Danielsons

David Danielsons 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).

  • System and method for predistorting signals to be amplified
    Patent number: 6400415
    Abstract: A system and method for predistorting a signal which is to be amplified by a non-linear amplifier. The system and method uses additional predistortion circuits to eliminate the predistortion caused by amplifier input circuits and amplifier output circuits. In one aspect of the invention, the system and method uses a frequency response and phase corrector circuit to modify the amplitude versus frequency of the signal independent of phase.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: June 4, 2002
    Assignee: Harris Corporation
    Inventor: David Danielsons
  • System and method for transmitting advanced television signals
    Patent number: 6335766
    Abstract: A system and method for transmitting advanced television signals such as digital television signals. The system and method controls the frequency of the RF signal by compensating for errors in the signal received from a transport system. The system and method also reduces the complexity of the transmission system by inserting a pilot frequency signal after the television signal has been filtered and shaped.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: January 1, 2002
    Assignee: Harris Corporation
    Inventors: Ed Twitchell, Bob Davis, David Danielsons, Bob Plonka, Dave Nickell
  • System and method for controlling a transmitter frequency
    Patent number: 6281935
    Abstract: A system and method for controlling the frequency of a signal being transmitted wherein the frequency of the signal received at the transmitter site is error corrected before being broadcast. The error in the frequency may be developed and applied to the intermediate frequency upconversion and/or the channel upconversion to reduce or eliminate the effects of the error. In the system and method, a pilot frequency signal can be added to the signal to be broadcast after the signal to be broadcast has been shaped and filtered.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: August 28, 2001
    Assignee: Harris Corporation
    Inventors: Ed Twitchell, Bob Davis, David Danielsons, Bob Plonkn