Patents by Inventor D. Lee Newman

D. Lee Newman 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).

  • Current-mode D/A converter having variable output and offset control
    Patent number: 6816099
    Abstract: A current-mode D/A converter is described having variable output and offset control. According to an exemplary embodiment, a first D/A converter includes a number of first control inputs and an output capable of generating a first current proportional to a number of active first control inputs. A driver includes an input connected to the output of the first D/A converter, a number of second control inputs, and an output capable of generating a second current proportional to the first current based on a number of active second control inputs. A second D/A converter includes a number of third control inputs and an output capable of generating a third current proportional to a number of active third control inputs. Offset control circuitry includes an input connected to the output of the second D/A converter, an offset control input, and an output connected to the output of the driver.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: November 9, 2004
    Assignee: Renesas Technology America, Inc.
    Inventors: Gregory T. Brauns, Russell C. Deans, D. Lee Newman, Jr., Brian Worobey
  • CURRENT-MODE D/A CONVERTER HAVING VARIABLE OUTPUT AND OFFSET CONTROL
    Publication number: 20040183706
    Abstract: A current-mode D/A converter is described having variable output and offset control. According to an exemplary embodiment, a first D/A converter includes a number of first control inputs and an output capable of generating a first current proportional to a number of active first control inputs. A driver includes an input connected to the output of the first D/A converter, a number of second control inputs, and an output capable of generating a second current proportional to the first current based on a number of active second control inputs. A second D/A converter includes a number of third control inputs and an output capable of generating a third current proportional to a number of active third control inputs. Offset control circuitry includes an input connected to the output of the second D/A converter, an offset control input, and an output connected to the output of the driver.
    Type: Application
    Filed: March 21, 2003
    Publication date: September 23, 2004
    Applicant: Mitsubishi Electric & Electronics, U.S.A., Inc.
    Inventors: Gregory T. Brauns, Russell C. Deans, D. Lee Newman, Brian Worobey