Invention Grant
- Patent Title: Modified jitter criterion for optical recording media
- Patent Title (中): 光学记录介质的修改抖动标准
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Application No.: US12452541Application Date: 2008-06-26
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Publication No.: US07940620B2Publication Date: 2011-05-10
- Inventor: Joachim Knittel , Christof Ballweg , Rudolf Eyberg
- Applicant: Joachim Knittel , Christof Ballweg , Rudolf Eyberg
- Applicant Address: FR Boulogne-Billancourt
- Assignee: Thomson Licensing
- Current Assignee: Thomson Licensing
- Current Assignee Address: FR Boulogne-Billancourt
- Agent Robert D. Shedd; Jeffrey M. Navon
- Priority: EP07112031 20070709; EP07121176 20071121
- International Application: PCT/EP2008/058131 WO 20080626
- International Announcement: WO2009/007243 WO 20090115
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
The present invention relates to a method for checking the quality of a recording on a disk intended to be read with a first wavelength and intended to be recorded with a second wavelength, directly with the second wavelength used by the recording system. According to the invention, the method uses a modified jitter definition when a jitter value of recorded information is measured using light of the first wavelength. A special equalizer takes account of a required asymmetry.
Public/Granted literature
- US20100128584A1 Modified jitter criterion for optical recording media Public/Granted day:2010-05-27
Information query
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