Methods for transporting digital media

摘要

A networked system is provided for transporting digital media packets, such as audio and video. The network includes network devices interconnected to send and receive packets. Each network device can receive and transmit media signals from media devices. A master clock generates a system time signal that the network devices use, together with a network time protocol to generate a local clock signal synchronized to the system time signal for both rate and offset. The local clock signal governs both the rate and offset of the received or transmitted media signals. The system, which can be implemented using conventional network equipment enables media signals to be transported to meet quality and timing requirements for high quality audio and video reproduction.

主权项

1. A data network suitable for transporting media packets, the network comprising:
a master clock device to generate a system time signal for the network; a plural number of network devices interconnected such that each network device can send media packets to other network devices, and to receive media packets from other network devices; wherein each network device also being configured to receive media signals from a media device, to transmit media signals to a media device, or to do both and wherein at least one network device is configured to receive and transmit media signals to a media device; and wherein, each network device is coupled to the master clock device and uses the system time signal and a network time protocol to generate a local clock signal synchronised to the system time signal for both rate and offset, the local clock signal governing both the rate and offset of the received or transmitted media signals.