Patents Assigned to Peter Qvortrup
  • Digital to analog conversion devices
    Patent number: 5420585
    Abstract: A digital-to-analog conversion device for converting a digital signal to an analog signal for amplification by an audio amplifier. The conversion device has a solid state digital-to-analog converter and a filter connected to the output of the digital-to-analog converter. The filter comprises n passive components where n is a number of at least two, arranged so as to form an nth order filter for reducing the quantization of the output of the digital-to-analog converter.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: May 30, 1995
    Assignee: Peter Qvortrup
    Inventor: Guy d. W. B. Adams