H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/26 (2006.01) H04H 20/67 (2009.01) H04L 7/04 (2006.01) H04J 3/06 (2006.01) H04H 3/00 (2006.01)
Patent
CA 2117254
A simulcast transmission system (10) provides for time synchronizing data transmissions from a plurality of transmission stations (16,18). The transmission stations (16,18) include inputs (400) for receiving system timing signals from a control station, a transmitter for transmitting synchronization timing signals and data (32), and transmission clocks (36) for controlling the time of transmission of synchronization timing signals and data. The synchronization timing signals indicate a local time of transmission and are transmitted in response to system timing signals received from a control station (12). The control station (12) comprises apparatus (20) for generating and distributing the system timing signals, apparatus (26) for receiving the synchronization timing signals from the transmission stations, and apparatus (20, 22, 28) for generating and distributing time adjustment factor signals to the transmission stations (16,18) in response to receiving the synchronization timing signals. The transmission clocks (36) are adjusted in response to the time adjustment factor signals for controlling the time of transmission of the data signals.
Un système de transmission simultanée (10) permet de synchroniser des transmissions de données à partir d'une pluralité de stations émettrices (16, 18) comportent des horloges de transmission (36) qui contrôlent le temps de transmission des données et des signaux de synchronisation, ces derniers indiquant un temps local de transmission et étant transmis en réponse aux signaux de synchronisation système reçus depuis une station de commande (12). La station de commande (12) comprend un appareil (20) qui génère et répartit les signaux de synchronisation système, un appareil (26) qui reçoit les signaux de synchronisation des stations émettrices et des appareils (20, 22, 28) qui génèrent et répartissent des signaux de facteurs de réglage dans le temps aux stations émettrices (16, 18) en réponse aux signaux de synchronisation. Les horloges de transmission (36) sont réglées par rapport aux signaux de facteurs de réglage dans le temps afin de réguler le temps de transmission des signaux de données.
Goreham Steven A.
Vanderspool Jan P. II
Gowling Lafleur Henderson Llp
Motorola Inc.
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