PASM and TASM forward error correction and detection code method

Details PASM and TASM forward error correction and detection code method PASM and TASM forward error correction and detection code method

1987-08-03

1989-07-18

Pellinen, A. D.

Excavating

G06F 1110

Patent

active

048499765

ABSTRACT:
A PASM and TASM encoding method with the steps of storing a block of a data-bit sequence in a memory, calculating parity-check symbols, and outputting an encoded data bit sequence. The PASM encoding method includes calculating a first set of parity-check symbols from the data-bit sequence along a first set of parity lines, and calculating at least a second set of parity-check symbols from the data symbols and parity-check symbols along a second set of parity lines, wherein each parity line of the second set of parity lines has a path traversing through the parity-check symbols. The TASM encoding method includes calculating a first parity-check symbol from data symbols and parity-check symbols along a first parity line having a first slope and calculating at least a second parity-check symbol from data symbols and parity-check symbols along a second parity line having a second slope, wherein the second parity line traverses through the first parity-check symbol.

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