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Transmitting commands over a serial link

  • US 5,048,062 A
  • Filed: 10/30/1989
  • Issued: 09/10/1991
  • Est. Priority Date: 10/30/1989
  • Status: Expired due to Term
First Claim
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1. Apparatus for generating commands in a system wherein multi-bit characters are continuously sent from a sender to a receiver to acquire character synchronization, said apparatus comprising:

  • register means for providing a multi-bit idle character;

    bit modifying means connected to said register means for changing selected bits of said multi-bit idle character for forming a command character which is a modification of said multi-bit idle character; and

    multiplexing means for forming an ordered set of characters, said ordered set having said multi-bit idle character as a first character and said command character as a second character.

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