DATA REPRODUCTION CIRCUIT - MITSUBISHI ELECTRIC CORP

Title:

DATA REPRODUCTION CIRCUIT

Document Type and Number:

WIPO Patent Application WO/2008/029438

Kind Code:

A1

Abstract:

A data reproduction circuit includes: an input phase detection circuit for outputting a gate signal synchronized with an input data rise phase even when a jitter component is superimposed on a in put burst optical signal; a gate-equipped multi-phase oscillator for instantaneously oscillating an N-phase clock by using the gate signal as a trigger; a data identification reproduction circuit for outputting sampling data on the input data synchronized with the clock; a continuous clock generation circuit for generating a continuous clock as a reference clock; a continuous clock synchronization circuit for outputting the sampling data synchronized with the continuous clock as the phase-synchronized data; and a phase selector for selecting phase-synchronized data of the optimal identification phase having the greatest phase margin for the input data and outputting it as reproduction data. Thus, it is possible to reproduce data identified rapidly by the optimal identification phase from the input data and output the data synchronized with the reference clock.

Inventors:

SUZUKI NAOKI (JP)
TAGAMI HITOYUKI (JP)
NOGAMI MASAMICHI (JP)
NAKAGAWA JUNICHI (JP)

Application Number:

PCT/JP2006/317431

Publication Date:

March 13, 2008

Filing Date:

September 04, 2006

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
SUZUKI NAOKI (JP)
TAGAMI HITOYUKI (JP)
NOGAMI MASAMICHI (JP)
NAKAGAWA JUNICHI (JP)

International Classes:

H04J3/06; H04L7/02

Foreign References:

JP2005012305A	2005-01-13
JP2004015689A	2004-01-15
JPH07221744A	1995-08-18
JP2002094494A	2002-03-29
JP2005151424A	2005-06-09
JP2005045525A	2005-02-17

Other References: