Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
199 words
Means for correcting errors in PCM data which has been encoded as interleaved binary data words for two channels and which also includes error-correction and error-detection words, comprising, an error detecting means receiving said PCM data and indicating from said error-detection words whether an error exists in a data format, a means for de-interleaving said PCM data by applying different time delays thereto to produce said binary data words, and said error-correction words and to identify any binary data words in which errors exist, a syndrome signal generating circuit receiving the output of said de-interleaving means to produce error syndrome signals from said binary data words and said error correction words, an error-correcting circuit receiving the outputs of said syndrome signal generating circuit and said means for de-interleaving said PCM data and correcting binary data words in error by using the correct binary data words and the error correction words, a controller, an error signal pattern identifying circuit connected to said controller and receiving an input from said de-interleaving means, an error compensating circuit receiving output of said means for de-interleaving and said controller, and a selector means receiving the outputs of said compensating circuit and said correcting circuit.
Claim 2
Dependent Claim
199 words
Means for correcting errors in PCM data which has been encoded as interleaved binary data words for two channels and which also includes error-correction and error-detection words, comprising, an error detecting means receiving said PCM data and indicating from said error-detection words whether an error exists in a data format, a means for de-interleaving said PCM data by applying different time delays thereto to produce said binary data words, and said error-correction words and to identify any binary data words in which errors exist, a syndrome signal generating circuit receiving the output of said de-interleaving means to produce error syndrome signals from said binary data words and said error correction words, an error-correcting circuit receiving the outputs of said syndrome signal generating circuit and said means for de-interleaving said PCM data and correcting binary data words in error by using the correct binary data words and the error correction words, a controller, an error signal pattern identifying circuit connected to said controller and receiving an input from said de-interleaving means, an error compensating circuit receiving output of said means for de-interleaving and said controller, and a selector means receiving the outputs of said compensating circuit and said correcting circuit.
Claim 3
Dependent Claim
35 words
Means for correcting PCM data according to claim 1 including a first delay means connected to receive the outputs of said correcting circuit and said compensating circuit and supplying an input to said compensating circuit.
Claim 4
Dependent Claim
33 words
Means for correcting PCM data according to claim 1 including a slewing rate controller receiving the outputs of said correcting circuit and said compensating circuit and supplying an input to said selector means.
Claim 5
Dependent Claim
32 words
Means for correcting PCM data according to claim 1 including a filter means receiving the outputs of said correcting circuit and said compensating circuit and supplying an input to said selector means.
Claim 6
Dependent Claim
29 words
Means for correcting errors in PCM data according to claim 4 including a detector connected to said error detecting means and supplying a muting signal under selected error conditions.
Claim 7
Dependent Claim
41 words
Means for correcting errors in PCM data according to claim 1 wherein said means for de-interleaving includes a series to parallel converter, and a buffer memory which receives the outputs of said series to parallel converter and said error detecting means.
Claim 8
Dependent Claim
33 words
Means for correcting errors in PCM data according to claim 6 wherein said means for de-interleaving includes a plurality of delay means of different delays connected to the output of said buffer memory.
Claim 9
Dependent Claim
20 words
Means for correcting errors in PCM data according to claim 7 wherein said plurality of delay means comprise memory means.
Claim 10
Dependent Claim
37 words
Means for correcting errors in PCM data according to claim 7 including a one block delay means receiving the outputs of said plurality of delay means and supplying inputs to said compensating circuit and said correcting circuit.