Resources Contact Us Home
Waveform equalizer

Image Number 9 for United States Patent #6061395.

A waveform equalizer prevents the delay of coefficient convergence due to the characteristics of a reproduced signal or the coefficient divergence due to an increase in determined errors. The waveform equalizer constituted by a transversal filter suppresses inter-symbol interferences of a transmitted digital information signal by multiplying the digital information signal and delayed signals thereof by tab coefficients and adding the multiplication results. The waveform equalizer comprises a virtual determination circuit for virtually determining the most plausible digital information from the output of the transversal filter, an error calculation circuit for providing an amplitude error based on the virtual determination result, a retaining and selecting circuit for retaining and selecting the digital information signal and the delayed output thereof, and an updating circuit for multiplying the output from the error calculation circuit by the outputs from the retaining and selecting circuit and to thereby update tab coefficients, wherein the virtual determination circuit virtually determines the value of a most plausible digital information signal by detecting a peak and utilizing the correlationship between signal components of the digital information signal.

  Recently Added Patents
Handling errors in a data processing system
Circuit for compressing data and a processor employing same
Time sharing type autostereoscopic display apparatus and method for driving the same
Flexure with insulating layer isolating a portion of a metal substrate
Non-visual presentation of information on an electronic wireless device
Pyridazine compounds for controlling invertebrate pests
Optical cable plug-in detection
  Randomly Featured Patents
Rear suspension system for four-wheel-steered vehicle
Flow control member for a filter cartridge cleaning system
Oil-water separator
Dip socket having preloading and antiwicking features
Lens dyeing method and lens dyeing aparatus: dyeing lenses to give a continuous color density gradient
Focus error signal generation using a birefringent lens with confocal detection
Planetary differential
Mobile device with acoustically-driven text input and method thereof
Gas-blast switch
Dispensing cap with rotatable top