Multi-phase locked loop for data recovery

Details Multi-phase locked loop for data recovery Multi-phase locked loop for data recovery

2004-08-27

2009-10-20

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S374000

Reissue Patent

active

RE040939

ABSTRACT:
The present invention provides a multi-phase-locked loop without dead zone, which can reduce clock jitter and provide larger tolerance for data random jitter. It generates and output multiple sets of control signals (upk/dnk) via a multi-phase voltage controlled oscillator which generates a plurality of multi-phase clock signals for detecting the transition edge of data signal. Therefore, the phase error θeand the voltage Vd of the multi-phase-locked loop can be adjusted to be nearly linear according to the control signals. A multi-phase-locked loop without dead zone thus can be provided.

REFERENCES:
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patent: 4535459 (1985-08-01), Hogge, Jr.
patent: 5408200 (1995-04-01), Buhler
patent: 5799048 (1998-08-01), Farjad-Rad et al.
patent: 6026134 (2000-02-01), Duffy et al.
patent: 6314151 (2001-11-01), Fukaishi

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