Apparatus and method for detecting synchronization signal of data signal utilizing synchronization symbols
AssigneeRealtek Semiconductor Corp.
InventorsWei-Ting Wang, Cheng-Yi Huang, Bao-Chi Peng
Life of this patent
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Abstract
A synchronization signal detector includes: a first circuit configured to delay the data signal by a period of at least one data segment of the data signal to generate a delayed signal; a second circuit configured to produce a plurality of similarity signals according to the data signal and the delayed signal, each of the similarity signals representing the similarity between the data signal and the delayed signal, and a third circuit configured to determine the synchronization signal of the data signal according to the similarity signals. The present invention further provides a method corresponding to the signal detector.
Claims24
An apparatus for detecting a synchronization signal of a data signal, comprising:
- a first circuit configured to delay the data signal by a predetermined period to generate a delayed signal;
- a second circuit configured to compare the data signal and the delayed signal to output a plurality of comparison values;
- a third circuit configured to produce a plurality of similarity signals according to the comparison values, each of the similarity signals representing the similarity between the data signal and the delayed signal;
- and
- a fourth circuit configured to determine the synchronization signal of the data signal according to the similarity signals;
- wherein each of the similarity signals is a summation of a plurality of adjacent comparison values of the comparison values.
A method for detecting a synchronization signal of a data signal, comprising:
- delaying the data signal by a predetermined period to generate a delayed signal;
- comparing the data signal and the delayed signal to output a plurality of comparison values;
- outputting a plurality of similarity signals according to the comparison values, each of the similarity signals representing the similarity between the data signal and the delayed signal, wherein each of the similarity signals is a summation of a plurality of adjacent comparison values out of the comparison values;
- and
- determining the synchronization signal of the data signal according to the similarity signals.
An apparatus for detecting a synchronization signal of a data signal, comprising:
- a first circuit configured to delay the data signal by a period of at least one data segment of the data signal to generate a delayed signal;
- a second circuit configured to produce a plurality of similarity signals according to the data signal and the delayed signal, each of the similarity signals representing the similarity between the data signal and the delayed signal;
- a buffering module, coupled to the second circuit, for storing the similarity signals:
- and
- an identification unit, coupled to the buffering module, for selecting an extreme from the plurality of similarity signals, wherein the extreme is a location utilized for generating the synchronization signal of the data signal.
A method for detecting a synchronization signal of a data signal, comprising:
- accumulating two symbols which are one segment apart according to the data signal to update the data signal;
- delaying the data signal by a predetermined period to generate a delayed signal;
- comparing the data signal and the delayed signal to output a plurality of comparison values;
- outputting a plurality of similarity signals according to the comparison values, each of the similarity signals representing the similarity between the data signal and the delayed signal;
- and
- determining the synchronization signal of the data signal according to the similarity signals.
A method for detecting a synchronization signal of a data signal, comprising:
- delaying the data signal by a predetermined period to generate a delayed signal;
- comparing the data signal and the delayed signal to output a plurality of comparison values;
- outputting a plurality of similarity signals according to the comparison values, each of the similarity signals representing the similarity between the data signal and the delayed signal;
- and
- selecting an extreme from the plurality of similarity signals, wherein the extreme represents a location utilized for generating the synchronization signal of the data signal.
Dependencies are inferred from the claim text.