Patent ID: 7286570
Filing Date: 2007-10-23
Classification: H04J,H04L,H04Q

Abstract:
1. Data transmission apparatus comprising a first transmit interface for transmitting a data stream comprising a sequence of fixed-size transmit packets to a receiver, the first transmit interface comprising: a first demultiplexer connected to receive the data stream and to split the data stream by delivering the transmit packets in rotation into a plurality of N transmit channels, so that each said transmit channel carries every N a plurality of data transmitting devices, each data transmitting device connected to receive the transmit packets of a corresponding one of the N transmit channels and to output the transmit packets of the corresponding one of the N transmit channels on a corresponding data connection for transmitting data over a mid-plane to the receiver, wherein each data transmitting device comprises a serializer device and the corresponding data connection comprises a serial data connection; and, a first transmit control circuit connected to the data transmitting devices, the first transmit control circuit configured to cause the data transmitting devices to output the transmit packets in sequence with commencement of transmission of the transmit packets from sequential data transmitting devices staggered in time relative to one another by a time difference ΔT; wherein: the first transmit interface is located on a line card having an interface for receiving the data stream, the receiver is located on a second card, and the serial data connections comprise data lines extending between the line card and the second card through the midplane; the receiver comprises a second receive interface, the second receive interface comprising: wherein: