Adaptively synchronized ring network for data communication

Details Adaptively synchronized ring network for data communication Adaptively synchronized ring network for data communication

1986-10-14

1987-12-29

Masinick, Michael A.

Pulse or digital communications

Repeaters

Testing

370 86, 370108, 375118, H04B 336

Patent

active

047165758

ABSTRACT:
In a ring communication system, data is received by and retransmitted by a plurality of network interface units spaced along the ring. Each network interface unit includes an elastic storage buffer which is preferably less than two bits in length. A feedback loop in each unit continuously controls the data transmitting rate from the network interface unit as a function of the average number of data bits in the elastic storage buffer. By thus controlling the transmitting rate, delay of data in the elastic storage buffer is controlled. Each network interface unit provides some of the delay required to cause the sum of all delays in the ring to become a multiple of 360 degrees. The entire network thus stabilizes at a substantially common frequency which provides the necessary phase delays throughout the network to provide a total phase shift of a multiple of 360 degrees.

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Brubaker and Nash, "A New Generation of Integrated Avionic Synthesizers", Motorola Semiconductor Products Inc., Mar. 1971.
Nash, "Phase-Locked Loop Design Fundamentals", Motorola Semiconductor Product Inc., AN-55 application Note.

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