Circuit and method for detecting address in pre-groove...

Details Circuit and method for detecting address in pre-groove... Circuit and method for detecting address in pre-groove...

2007-09-18

2007-09-18

Korzuch, William (Department: 2627)

Dynamic information storage or retrieval

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

Control of information signal processing channel

C369S047220, C369S059230

Reexamination Certificate

active

10832937

ABSTRACT:
An ADIP (address in pre-groove) signal detection circuit is capable of correctly and quickly detecting discontinuous points in a wobble signal, and has a simple configuration in a wobble detection system of an optical disc device such as a DVD+R/RW, and an ADIP signal detection method thereof. The ADIP signal detection circuit performing the ADIP signal detection method includes one or two window comparators, two edge detection circuits each consisting of an exclusive OR circuit and an AND circuit, and two discontinuous point determination circuits each consisting of a flip-flop and a counter. Therefore, the ADIP signal detection circuit has a simple configuration so that it can be easily implemented. Also, since the ADIP signal detection circuit has a fast operation speed, the ADIP signal detection circuit detects discontinuous points correctly and quickly.

REFERENCES:
patent: 6310851 (2001-10-01), Tobita et al.
patent: 6385257 (2002-05-01), Tobita et al.
patent: 11-45519 (1999-02-01), None
patent: 2002208231 (2002-07-01), None
patent: 2003-85749 (2003-03-01), None

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