Transmission apparatus and transmission method for digital data

Details Transmission apparatus and transmission method for digital data Transmission apparatus and transmission method for digital data

H - Electricity

03

M

H03M 7/00 (2006.01) G06F 13/38 (2006.01) H04L 5/14 (2006.01) H04L 12/40 (2006.01) H04L 25/49 (2006.01) H04L 12/64 (2006.01)

Patent

CA 2232624

Arbitration signals and packet data are transmitted and received as 5-bit code data through transmission blocks (6A and 6B) and receiving blocks (7A and 7B) by providing a conversion block (3) which converts the arbitration signals into 5-bit code data and subjects the packet data to 4-bit/5-bit conversion. With this constitution, the cable lengths between nodes in a digital serial data interface (for instance IEEE1394 High Performance Serial Bus Standard) which performs the arbitration of the bus usage priority before the data transfer are increased and a digital serial data interface apparatus which facilitates the long distance transmission can be realized.

Des signaux d'arbitrage et des paquets de données sont émis et reçus sous forme de données en code 5 bits par des émetteurs (6A et 6B) et des récepteurs (7A et 7B) respectivement, grâce à un convertisseur (3) traitant les signaux d'arbitrage en données en code 5 bits et transcodant les paquets de données en code 4/5 bits. Du fait de cette structure, il est possible d'augmenter la longueur de câble entre des noeuds dans des interfaces de données numériques en série (par exemple bus HPSBS de type IEEE 1394) arbitrant, avant le transfert de données, la priorité d'utilisation de bus, ainsi que de mettre au point un appareil d'interfaçage de données numériques en série, ce qui facilite les transferts à longue distance.

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