×

Transition-controlled digital encoding and signal transmission system

  • US 5,999,571 A
  • Filed: 10/05/1995
  • Issued: 12/07/1999
  • Est. Priority Date: 10/05/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for detecting a boundary of a synchronization character within an encoded serial data stream including at least three repetitions of said synchronization character, said synchronization character having a number of logical transitions within a predetermined range, said system comprising:

  • means for coupling an input set of bits from said encoded serial data stream into a register;

    means for performing a first set of logical operations at least upon adjacent ones of a first subset of said input set of bits and for grouping the results of said predefined logical operations into a set of groups;

    means for comparing said groups in order to determine if said input set of bits corresponds to said at least three repetitions of said synchronization character;

    detection logic means for identifying said boundary of said synchronization character on the basis of results of performance of a second set of logical operations upon said input set of bits; and

    wherein said means for comparing includes means for comparing first and third of said groups and for comparing second and fourth of said groups, said input set of bits corresponding to said at least three repetitions of said synchronization character if said first group is equivalent to said third group and if said second group is equivalent to said fourth group.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×