Patent ID: 7522684
Filing Date: 2009-04-21
Classification: H04J,H04L

Abstract:
1. A signal transmission system comprising: a transmitter that transmits, for each one of a plurality arrays, a plurality of transmission signals and a synchronization signal synchronous with the plurality of transmission signals; a relay device for each of the plurality of arrays that relays the plurality of transmission signals and the synchronization signal of its respective array in parallel; and a receiver that receives the relayed transmission signals and synchronization signals, wherein the receiver includes: a synchronization signal output circuit for each of the plurality of arrays that receives the relayed synchronization signals and outputs a respective second synchronization signal according to each received synchronization signal; a holding circuit for each of the plurality of arrays that can hold the received plurality of transmission signals of its respective array synchronously with the second synchronization signal of its respective array; a notification circuit that selects one of plural timings for each relay device and outputs one notice, for each relay device, indicating the selected timing; and the transmitter includes a timing adjustment unit that adjusts a transmission timing of the plurality of transmission signals and the synchronization signal for each of the plurality of arrays to be transmitted from the transmitter, based on the respective notices from the notification circuit for each array, so that each of the plurality of transmission signals associated with the same array have the same transmission timing.