Data transmission

H - Electricity – 04 – L

Patent

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Details

H04L 25/49 (2006.01) H04L 25/00 (2006.01) H04N 7/025 (2006.01)

Patent

CA 2258171

A transmitter (20) having means (206, 207) to encode an input signal to form coded data, each element of said coded data having one of at least two discrete signal magnitude levels, the encoding means including in the coded data a periodic training sequence of data (T); and a receiver (30) to receive the coded data and, on the basis of the received training sequence, to adapt a threshold or thresholds to allow the discrete levels to be distinguishable from each other. The training sequence T may comprise a plurality of elements at least one of which, in turn, represents each one of the discrete signal levels. The receiver generates a look-up-table to store the adapted thresholds.

Emetteur (20) avec moyen (206, 207) pour coder un signal d'entrée pour former des données codées, chaque élément de ces données codées possède un niveau de magnitude parmi au moins deux niveaux de magnitude de signal discrets, le moyen de codage incluant dans les données codées une séquence de données de conditionnement périodique (T); et récepteur (30) recevant les données codées et adaptant sur la base des séquences de conditionnement reçues, un seuil ou des seuils pour permettre de distinguer les niveaux discrets les uns des autres. La séquence de conditionnement T peut se composer d'une pluralité d'éléments dont chacun représente à son tour chaque niveau de signal discret. Le récepteur génère une table de consultation mémorisant les seuils adaptés.

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