Device for automatic equalization of electrical data transmissio

Details Device for automatic equalization of electrical data transmissio Device for automatic equalization of electrical data transmissio

1980-11-07

1982-09-28

Ng, Jin F.

Pulse or digital communications

Repeaters

Testing

333 18, H04L 2503, H03K 5135

Patent

active

043521908

ABSTRACT:
A device for the automatic equalization, on the receiving side, of digital data signals, in which, after amplitude stabilization, the input signal is fed to a synchronizing unit and a clock signal generating unit, a distortion measuring unit and a controllable equalizer unit in which the distortion measuring signal is fed to the equalizer as a control signal. The output signal of the equalizer is then normalized in amplitude. The equalization measuring unit consists of a squaring or rectifier unit, a clock filter for the zero transition region and an integrator. Equalizers with different characteristics and their circuits are represented. The amplitude stabilization on the input side may be supplemented by an amplitude-controlled pre-equalization (FIG. 1).

REFERENCES:
patent: 3755736 (1973-08-01), Kaneko et al.

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