Patents Assigned to Graychip Inc.
  • Signal processing system and method for enhanced cascaded integrator-comb interpolation filter stabilization
    Patent number: 5880973
    Abstract: A signal processing system and method for stabilizing cascaded integrator-comb (CIC) interpolation filters. The signal processing system includes an overflow detection circuit and reset circuitry. The overflow detection circuit monitors the output of the CIC interpolation filter for an overflow condition which is indicative of filter instability. When an overflow condition is detected, the reset circuitry automatically resets the filter, thereby eliminating the instability.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: March 9, 1999
    Assignee: Graychip Inc.
    Inventors: Joseph Harold Gray, Lars Morten Jorgensen