Multiplex communications – Wide area network – Packet switching
Patent
1992-05-29
1994-10-04
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 953, H04Q 1104
Patent
active
053532813
ABSTRACT:
An intermittenceless switching system includes two speech path memories having sufficient capacity to store a single frame of data having a plurality of time slots. The incoming data is stored in one memory, while the outgoing data is read from the other memory. A control circuit continuously alternates the read/write functions between the two memories. A control memory is used to store switch control information. The system includes a buffer memory that is present between a data processor and the control memory to prevent switch operation during data transmission. The system also includes a monitoring circuit for detecting an indication bit signifying the presence or absence of data in the time slot.
REFERENCES:
patent: 4597079 (1986-06-01), Aoki et al.
patent: 4941141 (1990-07-01), Hayano
patent: 5040174 (1991-08-01), Takeuchi et al.
patent: 5042082 (1991-08-01), Dahlin
Furuya Tsuneo
Kuwahara Hiroshi
Nakagoshi Arata
Ogawa Yohichi
Sasa Toshikazu
Hitachi , Ltd.
Hom Shick
Kokusai Electric Co. Ltd.
Olms Douglas W.
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