Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1998-03-27
2000-08-22
De Cady, Albert
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
714786, 370206, 375308, G06F 1110
Patent
active
061088102
ABSTRACT:
A broadcasting method encodes program material using convolutional codes having non-puncturable bits and puncturable bits and modulates orthogonal frequency division multiplexed carrier signals with the convolutional codes. The non-puncturable bits are carried by a first group of the carriers and the puncturable bits are carried by a second group of the carriers, where the first group of carrier signals is less susceptible to interference than the second group of carrier signals. The carrier signals are then broadcast to receivers which determine if the carriers in the second group have been corrupted and erase puncturable bits carried by any of the carriers which have been determined to be corrupted. This produces punctured codes which are subsequently decoded to recover the program material.
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Cammarata Denise Maureen
Kroeger Brian William
Stehlik Roy Ronald
Cady Albert De
Lamarre Guy
Lenart Robert P.
USA Digital Radio, Inc.
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