Trellis code for extended partial response maximum likelihood (EPRML) channel

A first trellis code (12A, 20A) according to the present invention is a rate 24/26 trellis code with three (3) bytes error propagation due to EPRML minimum distance channel errors, a minimum of six (6) transitions per code word and a maximum of twelve (12) consecutive zeroes. A second trellis code (...

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Bibliographische Detailangaben
Hauptverfasser:	RAE, JAMES WILSON, KARABED, RAZMIK, ASHLEY, JONATHAN J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A first trellis code (12A, 20A) according to the present invention is a rate 24/26 trellis code with three (3) bytes error propagation due to EPRML minimum distance channel errors, a minimum of six (6) transitions per code word and a maximum of twelve (12) consecutive zeroes. A second trellis code (12B, 20B) according to the present invention is a rate 48/51 trellis code, derived from the first trellis code. The second trellis code has four (4) bytes error propagation due to EPRML minimum distance channel errors, a minimum of twelve (12) transitions per code word and a maximum of twelve (12) consecutive zeroes. A third trellis code (12C, 20C) according to the present invention is a rate 48/51 trellis code with four (4) bytes error propagation due to EPRML minimum distance channel errors, a minimum of fourteen (14) transitions per code word and a maximum of eleven (11) consecutive zeroes.