An adaptive equalizer comprising a computing unit which receives a known signal sequence to estimate transmission channel characteristics and effect compensatory control of tap coefficients by use of a first algorithm that has fast convergence property, and a tap coefficient computing unit for making compensation for relatively slow changes in a random data input after the compensation for the transmission channel characteristics, which either employs an algorithm that involves a relatively low ...

"An adaptive equalizer comprising a computer unit which receives a known signals sequence to estimate transmission channel characteristics and effect compensatory control of tap coefficients by use of a first algorithm that has fast convergence property, and a tap coefficient computing unit for making compensation for relatively slow changes in a random data input after the compensation for the transmission channel characteristics, which either employs an algorithm that involves a relatively low...

Apparatus for equalizing pressure between two conduits including means for sensing pressure in said conduits; valve means communicating between said conduits, said valve means adapted to open so as to equalize pressure between said conduits.

A method and an equalizer circuit equalize signals transmitted on a line having an attenuation. The equalizer circuit includes: an analogical adaptive filter applied in series with the line and includes plural transconductance filters each having a bias current. The adaptive filter has a pole and a zero each having a frequency position in the working band that is variable in response to the bias current. The equalizer circuit includes a retroaction circuit applied to the output of the filter and...

A multibump equalizer having a main path which comprises an amplifier and a summing network and a plurality of feedback paths each including an individual amplifier and shaping network connected from the output of the equalizer to individual inputs to the summing network. All amplifiers and the summing network can be realized with a single operational amplifier.

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 vir...

A line equalizer for eliminating a precursor interference component and postcursor interference components from a pulse signal inputted from a transmission line. A precursor equalizer takes a sum of a signal derived from the input pulse signal retarded by a fundamental period and a signal derived from the input pulse signal multiplied by a coefficient a. A decision circuit decides the threshold level of an output pulse signal from the precursor equalizer to output a predetermined signal. A contr...

A phase equalizer with a pair of ceramic resonators with different resonant frequencies than each other provides convex group delay time characteristics, which compensates for the concave group delay time characteristics of a ceramic filter. Thus, the flat group delay time characteristics in the combination of a ceramic filter and a phase equalizer is obtained, and excellent speech quality in analog signal transmission and/or excellent error rate in data transmission is obtained, while keeping e...

An equalizer is provided with a branching device for branching a digitally modulated signal into two outputs. A series of weighting devices weights one of the outputs of the branching means, and a series of second weighting devices equal to or fewer in number than the first weighting devices weights the remaining output of the branching means. Combining elements equal in number to the first weighting devices combine two or three inputs, and delaying means fewer in number than the combining eleme...

The present invention covers a backlash equalizer of simple and economical construction which includes isolation of input and output with no interaction during adjustment. This latter is easy to obtain.