Phase difference detection circuit, phase difference...

Details Phase difference detection circuit, phase difference... Phase difference detection circuit, phase difference...

2005-11-28

2010-10-19

Ortiz Criado, Jorge L (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S053340, C369S059200

Reexamination Certificate

active

07817511

ABSTRACT:
An embodiment of the present invention provides a phase difference detection circuit for detecting a phase difference between input data and an input clock generated based on the input data, including: an input data edge position detecting part detecting an edge position of the input data based on an N-phase clock obtained by dividing a predetermined period into N areas (N is an integer of 2 or more); an input clock edge position detecting part detecting an edge position of the input clock based on the input clock and the N-phase clock; and a phase difference detecting part detecting the phase difference between the input data and the input clock based on the edge position of the input data and an edge position of the input clock.

REFERENCES:
patent: 5687203 (1997-11-01), Baba
patent: 6741668 (2004-05-01), Nakamura
patent: 6829295 (2004-12-01), Chao et al.
patent: 06-104740 (1994-04-01), None
patent: 8-237117 (1996-09-01), None
patent: 2001-273715 (2001-10-01), None
patent: 577992 (2004-03-01), None
Taiwanese Office Action dated Aug. 31, 2006, with English translation.
Japanese Office Action dated Dec. 8, 2009 with a partial English Translation.

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