Delay regulating device

Details Delay regulating device Delay regulating device

2008-01-08

2008-12-16

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

Reexamination Certificate

active

07466764

ABSTRACT:
In a delay regulating device, delay regulation is performed using a delay circuit performing delay regulation in a clock unit and a delay filter performing delay regulation in a tap unit smaller than the clock unit. The delay regulation is performed so as to obtain the maximum value of the correlation value and the minimum value of the error signal. First the delay circuit based on the clock unit is used to control the delay amount of the reference signal so as to obtain the maximum value of the correlation value. The delay filter is used to control the delay amount of the feedback signal so as to obtain the maximum value of the correlation value. Phase adjustment of the reference signal and the feedback signal is performed. The delay amount of the feedback signal is regulated so as to minimize the error signal unit using the delay filter.

REFERENCES:
patent: 6757525 (2004-06-01), Ishikawa et al.
patent: 6836517 (2004-12-01), Nagatani et al.
patent: 2005/0073361 (2005-04-01), Hamada et al.
patent: 2007/0286307 (2007-12-01), Hayashi et al.
patent: 2001-189685 (2001-07-01), None
patent: 03/103166 (2003-12-01), None
International Search Report dated Oct. 25, 2005, from the corresponding International Application.

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