Novel constant linear velocity control method for the multilevel run-length limited read-only disc

Mingming Yan; Jing Pei; Longfa Pan; Hequn Wang

doi:10.1117/12.843079

23 October 2009 Novel constant linear velocity control method for the multilevel run-length limited read-only disc

Mingming Yan, Jing Pei, Longfa Pan, Hequn Wang

Proceedings Volume 7517, Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies; 75170G (2009) https://doi.org/10.1117/12.843079
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

A novel constant linear velocity (CLV) control method employing sync pattern detection has been developed for the multi-level run-length limited read-only disc. In the proposed method, the sync pattern is special designed and inserted in the RF signal to detect the velocity error of the spindle. The differentiation method is adopted to detect the sync pattern from the RF signal and is more easy and accurate than using the threshold level slicer. By using the proposed CLV method, the spindle works robust in the CLV mode and the velocity error of the spindle can be suppressed less than 0.3%. The experimental result shows the novel CLV control method for the ML-RLL read-only disc is practicability.

Citation Download Citation

Mingming Yan, Jing Pei, Longfa Pan, and Hequn Wang "Novel constant linear velocity control method for the multilevel run-length limited read-only disc", Proc. SPIE 7517, Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies, 75170G (23 October 2009); https://doi.org/10.1117/12.843079

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