The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 1989
Filed:
Nov. 13, 1987
Donald L Schilling, Sands Point, NY (US);
David Manela, Kew Garden, NY (US);
SCS Telecom, Inc., Port Washington, NY (US);
Abstract
A PASM and TASM encoding method is provided comprising 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.