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Information transfer system for transferring binary information

  • US 4,843,539 A
  • Filed: 01/29/1987
  • Issued: 06/27/1989
  • Est. Priority Date: 02/06/1986
  • Status: Expired due to Term
First Claim
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1. An information transfer system for transferring binary information between a central unit and a plurality of modular peripheral assemblies via a bus system, wherein the bus system comprises a serial ring, and further comprises an interface unit comprising a shift register of said serial ring associated with each peripheral assembly which permits parallel tranfer of the binary information between each peripheral assembly and the bus system, each said interface unit being disposed in the serial ring and having parallel outputs and inputs coupled to a respective peripheral assembly, said bus system further comprising a plurality of control lines for controlling said interface units, each said interface unit comprising two sub-units, each sub-unit comprising four information bits, and further comprising first switching means provided at terminal ends of each interface unit allowing serial outputs and inputs of said interface units to be coupled together to form a ring shift register, and further comprising second switching means provided at said terminal ends for coupling said interface units together to form an enlarged ring shift register.

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