To provide an inverse multiplex process control system for an optical back plane unit that can adjust timing without the need for measurement at a high bandwidth.
A modulator 102 extracts a selected multiplexed compression data packet 120 from a multiplexed stream of the compression packet and a decompressor 104 decompresses the stream. A control signal 112 controls the modulator 102. The timing error of a modulator control signal copes with characteristic distortion in a decompression signal 116. Monitoring the effect of the timing error with respect to the decompression signal can control a delay in either of optical and electrical parts of a switching device to correct the timing error. Thus, the timing of the modulator control signal 112 can be adjusted continuously to minimize the timing error. A calibration pulse stream with a known value and a proper shape may be inserted to the decompression signal 116, in place of monitoring only the decompression signal 116.
| JPH10504145A | 1998-04-14 | |||
| JPH1188283A | 1999-03-30 | |||
| JP2002503916A | 2002-02-05 | |||
| JPH10504145A | 1998-04-14 | |||
| JPH1188283A | 1999-03-30 | |||
| JP2002503916A | 2002-02-05 |
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