Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Patent
1996-12-03
2000-08-08
Vu, Huy D.
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
370537, 370538, 370544, H04J 302, H04J 322, H04J 304
Patent
active
061011983
ABSTRACT:
A technique for performing a time slot interchange in a processor. The TSI process is surrounded by a multiplexing/demultiplexing circuit for converting a plurality of PCM highways into a single input serial data stream. The mux/demux circuit includes elastic stores to align frames and shift resisters to mux/demux with a minimum of delay. The TSI processor includes an input and an output buffered serial port, a pair of input buffers, one to receive even-numbered frames from the PCM highways and one to receive odd-numbered frames, and an output buffer. Data is read from the appropriate input buffer in a non-sequential fashion as commanded by the processor in accordance with information stored in connection arrays (address buffers). The data is then written to the output buffer sequentially. The timing of the reading and writing steps is optimized relative to free running buffered serial port pointers for each BSP to reduce the frame delay.
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Dougherty James Michael
Francis Gordon K.
Groth Tim P.
Koenig Roger L.
Morris Matthew D.
Carrier Access Corporation
Crouch Robert G.
Phan Man
Vu Huy D.
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