Detecting sync patterns for optical media

Details Detecting sync patterns for optical media Detecting sync patterns for optical media

2008-02-15

2009-06-09

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

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

Control of information signal processing channel

C369S047480, C369S053320

Reexamination Certificate

active

07545711

ABSTRACT:
A sync finder module for an optical medium playback device that generates a bit stream including sync patterns and data blocks comprises a pulse jitter detect module that receives the sync pattern, which includes a plurality of transitions each having a desired position in the sync pattern, that selects actual N-bit segments of the sync pattern at the desired positions and that compares the actual N-bit segments to at least one expected N-bit segment. A pulse verifying module communicates with the pulse jitter detect module and generates a verified signal if the expected N-bit segments match the actual N-bit segments.

REFERENCES:
patent: 6263469 (2001-07-01), Jang
patent: 6536011 (2003-03-01), Jang et al.
Standard ECMA-130 2nd Edition-Jun. 1996; ECMA Standardizing Information and Communication Systems; Data Interchange on Read-Only 120 mm Optical Data Disks (CD-ROM); pp. 1-47.
Standard ECMA-267 3rd Edition-Apr. 2001; ECMA Standardizing Information and Communication Systems; 120 mm DVD-Read-Only Disk; pp. 1-85.
ECMA International Standard ECMA-337; 2nd Edition-Dec. 2003; Data Interchange on 120 mm and 80 mm Optical Disk Using +RW Format—Capacity: 4,7 and 1,46 Gbytes per side (Recoding speed up to 4X); pp. 1-121.
Standard ECMA-338; Dec. 2002; ECMA Standardizing Information and Communication Systems; 80 mm (1,46 Gbytes perside) and 120 mm (4,70 Gbytes per side) DVD Re-recordable Disk (DVD-RW); pp. 1-150.

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