Apparatus for restoring a digital transmission signal

Excavating

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Details

375286, 375341, 375354, G06F 1110, H03M 1312

Patent

active

058964053

ABSTRACT:
An apparatus for receiving data block-interleaved and multi level/phase modulated data and restoring the block-interleaved multi level/phase modulated data into original data, comprises a demodulation and error correction portion for demodulating and error-correcting data to be received and outputting the modulated and error-corrected data; a synchronization portion for generating a fixed sync position signal, based on the comparison between the data output from the demodulation and error correction portion and stored block sync data; and a block deinterleaver for block-deinterleaving the data which is output from the demodulation and error correction portion according to the fixed sync position signal. The apparatus makes certain that a sync signal for block deinterleaving is identical to a sync signal at the transmission end and performs block deinterleaving even though no error correction is made. Furthermore, the present invention is capable of reliably detecting a sync signal, even when the sync signal is momentarily deviated because error correction is not completely made.

REFERENCES:
patent: 5241563 (1993-08-01), Paik et al.
patent: 5398260 (1995-03-01), Min
patent: 5442646 (1995-08-01), Chadwick et al.
patent: 5535220 (1996-07-01), Kanno et al.

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