Phase difference-adjusting circuit

Details Phase difference-adjusting circuit Phase difference-adjusting circuit

1989-07-18

1991-04-30

Olms, Douglas W.

Pulse or digital communications

Spread spectrum

Direct sequence

375118, H04L 102, H04L 704

Patent

active

050124935

ABSTRACT:
A phase-adjusting circuit for adjusting the phase relation between an input data string supplied via input lines includes sync detecting apparatus provided for each of the lines for generating frame sync-detection signals by detecting frame sync signals of the input data strings. Apparatus is provided for detecting a first data string having a largest delay of the input data strings. A phase difference-detecting apparatus detects phase differences between the first and the remaining data strings to produce phase difference signals for such remaining data strings. A line connecting signal-generating apparatus is responsive to the phase difference signal for generating line connecting signals. A variable-delay apparatus is responsive to the phase difference signals for outputting delayed data strings by giving delays to the remaining data strings. A first switching apparatus responsive to the line connecting signals delivers the remaining data strings to the variable-delay apparatus and outputs the first data string in an undelayed state. A second switching apparatus responsive to the line connecting signals delivers the first data string and the delayed data strings to output lines corresponding to the input lines.

REFERENCES:
patent: 3992580 (1976-11-01), Bittel et al.
patent: 4052670 (1977-10-01), Watanabe et al.

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