US 11,848,802 B2Granted

Received data equalization apparatus and method

AssigneeRealtek Semiconductor Corp.

InventorsPeng-Fei Lin, Chen-Yuan Chang, Shih-Chang Chen

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Abstract

The present invention discloses a receive data equalization apparatus. A delay-compensating calculation circuit retrieves training data groups of a training data signal to retrieve total delay amount, generate signed compensation amounts according to a relation among training data contents of training data in each of the training data groups to generate total compensation amount accordingly, and solve equations that correspond total delay amount of the training data groups to the total compensation amount to obtain each of the compensation amounts. A receive data equalization circuit receives the compensation amounts and retrieves a receive data group in a receive data signal, generate signed receive compensation amounts according to a relation among receive data contents of receive data in the receive data group to generate a total receive compensation amount accordingly to perform equalization on a terminal edge of the receive data group according to the total receive compensation amount.

Claims10

Dependent claims

A received data equalization apparatus, comprising:

a delay-compensating calculation circuit configured to:
retrieve a plurality of training data groups of a training data signal, wherein each of the training data groups comprises an identical number of a plurality of pieces of training data each having a training data content and each corresponding to one of a plurality of compensation amounts;
retrieve a total delay amount of each of the training data groups;
for each of the training data groups, determine a sign of each of the compensation amounts according to the relation among the training data content of each of the pieces of the training data to generate a plurality of signed compensation amounts and further generate a total compensation amount according to a sum of the signed compensation amounts;
and
for each of the training data groups, solve an equation that makes the total delay amount correspond to the total compensation amount to obtain each of the compensation amounts;
and
a receive data equalization circuit configured to:
receive the compensation amounts from the delay-compensating calculation circuit;
retrieve a received data group in a received data signal, wherein the received data group comprises a plurality of pieces of received data each having a received data content and each corresponding to one of the compensation amounts;
determine a sign of each of the compensation amounts according to the relation among the received data content of each of the pieces of the received data to generate a plurality of signed received compensation amounts and further generate a total received compensation amount according to a sum of the signed received compensation amounts;
and
perform equalization on a terminal edge of the receive data group according to the total receive compensation amount.

10 more elements

A received data equalization method, comprising:

retrieving a plurality of training data groups of a training data signal by a delay-compensating calculation circuit, wherein each of the training data groups comprises an identical number of a plurality of pieces of training data each having a training data content and each corresponding to one of a plurality of compensation amounts;
retrieving a total delay amount of each of the training data groups by the delay-compensating calculation circuit;
for each of the training data groups, determining a sign of each of the compensation amounts by the delay-compensating calculation circuit according to the relation among the training data content of each of the pieces of the training data to generate a plurality of signed compensation amounts and further generate a total compensation amount according to a sum of the signed compensation amounts;
for each of the training data groups, solving an equation that makes the total delay amount correspond to the total compensation amount by the delay-compensating calculation circuit to obtain each of the compensation amounts;
receiving the compensation amounts from the delay-compensating calculation circuit by a received data equalization circuit;
retrieving a received data group in a received data signal by the received data equalization circuit, wherein the received data group comprises a plurality of pieces of received data each having a received data content and each corresponding to one of the compensation amounts;
determining a sign of each of the compensation amounts by the received data equalization circuit according to the relation among the received data content of each of the pieces of the received data to generate a plurality of signed received compensation amounts and further generate a total received compensation amount according to a sum of the signed received compensation amounts;
and
performing equalization on a terminal edge of the receive data group by the received data equalization circuit according to the total receive compensation amount.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/677,177Filed 22 Feb 2022 · us provisional application
Priority: 4 Mar 2021
Published: US 2022/0286326 A18 Sep 2022
Granted: 19 Dec 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 25/03044
With a non-recursive structure: using fractionally spaced delay lines or combinations of fractionally integrally spaced taps
H04L 25/03146
Non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals: with a recursive structure
H04L 25/03229
Trellis search techniques: with state-reduction using grouping of states
H04L 25/10
Details ; arrangements for supplying electrical power along data transmission lines: compensating for variations in line balance