Automatic framing in time division multiplexer

Details Automatic framing in time division multiplexer Automatic framing in time division multiplexer

1981-01-12

1984-07-17

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

370 99, 364900, H04J 316

Patent

active

044609930

ABSTRACT:
A method and apparatus are described for automatically generating the frame that is used in a bit-interleaved time division multiplexer (TDM). The apparatus comprises a microprocessor, two random access memories in which are stored the channel select signals, device for determining the transmission frequencies of each channel and a computer program which is stored in the memory of the computer for calculating the distribution of the channel select signals in the frame. With such a system, the frame can be reconfigured in about thirty seconds. Two random access memories are preferably used for the storage of the channel select signals. While the signals stored in one memory are being used to generate the actual frame, a new set of channel select signals can be stored in the other memory. After such an updated frame is written in the second memory, the task of generating the channel select signals can be switched from the first memory to the second memory without loss of any data from any of the data channels.

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