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Asynchronous digital time-division multiplexing system with distributed bus

  • US 4,849,965 A
  • Filed: 07/07/1987
  • Issued: 07/18/1989
  • Est. Priority Date: 10/14/1983
  • Status: Expired due to Term
First Claim
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1. An asynchronous digital time-division multiplexing system, comprising(a) plural data sources each having active and inactive states and being identified by respective identifiers, each active source supplying data bits with a corresponding bit rate, and said corresponding bit rates of said active sources being different therebetween;

  • (b) plural access means associated with said data sources, respectively, for linking each associated data source to an identifier bus and to a packet bus, each access means transmitting a packet into said packet bus in response to each identifier of said associated data source detected on said identifier bus, and each transmitted packet consisting of said identifier and a group of data bits delivered by said associated data source; and

    (c) allocating means linked to said identifier bus for constituting identifier frames and transmitting said frames into said identifier bus; and

    wherein(d) each said identifier frame has a determined length and is composed of said identifiers corresponding to said active sources; and

    (e) each identifier is repeated in said identifier frame a number of times approximately proportional to said bit rate of said active source corresponding to said identifier.

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