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
Valved, microwell cell-culture device and method
System and method for associating financial transaction data with a user's project data using a portable electronic device
Liquid-filled protein-phosphatidic acid capsule dispersions
Ice tray for refrigerator
Pyridyldiamido transition metal complexes, production and use thereof
Three-dimensional holographic display using active shutter
Process for preparing soybean curd using micronized solution of soybean curd
  Randomly Featured Patents
Flush toilet
Tampon applicator having a rupturable membranous cap
Unipolar semiconductor photodetector with suppressed dark current and method for producing the same
Knife and safety cap
Plasma processing apparatus
Fume exhauster
Top loading, continuous suction feeder attachment for printing apparatus
Methods and systems for producing faces of N-dimensional forms
Memory system with reversible resistivity-switching using pulses of alternatrie polarity
Dispenser comprising inner and outer walls functioning as cooperative unit