19.8-GB ROM disk readout using a 0.7-NA single objective lens and a violet laser diode

Tetsuya Kondo; Atsushi A.H. Hayami; Tsuyoshi Oki; Junichiro J.T. Tonami; Eiji Nakagawa; Takeo Kojima; Makoto M. Itonaga

doi:10.1117/12.399371

18 September 2000 19.8-GB ROM disk readout using a 0.7-NA single objective lens and a violet laser diode

Tetsuya Kondo, Atsushi A.H. Hayami, Tsuyoshi Oki, Junichiro J.T. Tonami, Eiji Nakagawa, Takeo Kojima, Makoto M. Itonaga

Proceedings Volume 4090, Optical Data Storage 2000; (2000) https://doi.org/10.1117/12.399371
Event: Optical Data Storage, 2000, Whistler, BC, Canada

Abstract

The noise reduced disc and the advanced signal reproduction system with the asymmetry compensatory function enhance the disc capacity up to 19.8 GBytes per DVD size. The noise was reduced by applying Aluminum based multi-component alloy for the reflective layer, moreover all the loops in the system accurately function even under the signal asymmetric condition by using the newly developed Error Feedback type PRML. The error rate characteristics versus disc tilts suggest that the ROM disc system has sufficient performance for the practical use.

Citation Download Citation

Tetsuya Kondo, Atsushi A.H. Hayami, Tsuyoshi Oki, Junichiro J.T. Tonami, Eiji Nakagawa, Takeo Kojima, and Makoto M. Itonaga "19.8-GB ROM disk readout using a 0.7-NA single objective lens and a violet laser diode", Proc. SPIE 4090, Optical Data Storage 2000, (18 September 2000); https://doi.org/10.1117/12.399371

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