Patents Represented by Attorney John R. Stark

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  • Alias detector for digital oscilloscopes
    Patent number: 4656598
    Abstract: An alias detector for digital oscilloscopes is provided to detect inaccurate reconstructions of waveforms. Testing may be done according to the Nyquist criterion of a minimum of two points per period of the waveform or according to a user-specified criterion. The testing may be useful for detecting perceptual aliasing. The alias detector may automatically correct the error or display a warning to the user. The time frame for testing may be varied with reference to the time frame displayed to the user.
    Type: Grant
    Filed: November 6, 1984
    Date of Patent: April 7, 1987
    Assignee: Hewlett Packard Company
    Inventor: John R. Wilson