US 7,095,803 B2 · Method of reconstructing data transmitted over a transmission path in a receiver and corresponding device

Abstract

To reconstruct data transmitted over a transmission path, for example a cable, the corresponding signal received by the receiver is firstly amplified and subsequently made discrete by means of an A/D-converter (6), in order to obtain a suitable digital signal, whereby the signal amplified for this purpose is scanned with a relatively low sampling rate, which can frequently lie in the Nyquist range or can be even less than the Nyquist frequency. Subsequently the signal made discrete in this way is filtered by means of a digital high pass filter (8) and equalized by means of a digital cable approximation filter (9) to compensate any distortion occurring during the transmission over the transmission path. By means of a phase locked loop (14, 18) a regenerated clock (CLK) and synchronous with this clock the originally transmitted data (DATA) is recovered from the digital signal processed in this way.

Claims30

Dependent claims

Method of reconstructing data transmitted over a transmission path in a receiver, comprising the steps of:

a) amplification of a signal received by the receiver over the transmission path corresponding to the transmitted data,
b) making discrete the signal amplified in step a) with the aid of an A/D-converter, in order to obtain a suitable digital signal,
c) filtering of the digital signal obtained in step b) with the aid of a digital high pass filter,
d) compensation of distortion of the signal occurring through the transmission over the transmission path with the aid of a digital filter, is fed to the high pass filtered digital signal in step c), in order to obtain a suitable equalized digital signal, and
c) recovery of the data originally transmitted over the transmission path from the equalized digital signal obtained in step d),
wherein the amplified signal is filtered with the aid of an analog low pass filter between steps a) and b), and
wherein the signal emitted by the analog low pass filter to suppress offset is filtered with the aid of a further analog low pass filter, whereby the signal emitted by this further analog low pass filter to adjust the amplification, with which the signal received by the receiver is amplified in step a), is used.

4 more elements

Dependencies are inferred from the claim text.

Method of reconstructing data transmitted over a transmission path in a receiver and corresponding device

Life of this patent

Method of reconstructing data transmitted over a transmission path in a receiver and corresponding device

Life of this patent

Abstract

Claims30