Readout method and apparatus for optical information medium
作者： Hiroshi Shingai , Hajime Utsunomiya , Takashi Kikukawa , Tatsuya Kato
DOI:
关键词:
摘要: An information readout method for an optical medium comprising recording layer having pits or recorded marks representative of data involves the step irradiating a laser beam to through objective lens providing readings marks. When has wavelength λ 400 410 nm, numerical aperture NA 0.70 0.85, and have minimum size P L up 0.36λ/NA, is carried out at power Pr least 0.4 mW beam. 630 670 0.60 0.65, 1.0 Pits approximate resolution limit determined by diffraction can be read high C/N.
lens.org 参考文章(27)
Shigemi Maeda, Hiroshi Fuji, Tetsuya Okumura, Optical recording method and device for optimally controlling the width of the recording marks ,(1998)
Katsumi Suzuki, Takashi Yoshizawa, Optical disk and method of apparatus for reproducing data from the same optical disk ,(2001)
Hironobu Mizuno, Michikazu Horie, Takashi Ohno, Optical information recording medium and optical recording method ,(1999)
Akemi Hirotsune, Motoyasu Terao, Keikichi Andoo, Hideki Saga, Junko Ushiyama, Yumiko Anzai, Masatoshi Ohtake, Makoto Miyamoto, Tsuyoshi Toda, Tetsuya Nishida, Information recording method and apparatus with suppressed mark edge jitters ,(2008)
Takashi Kikukawa, Tatsuya Kato, Hiroshi Shingai, Hajime Utsunomiya, High-Density Read-Only Memory Disc with Super Resolution Reflective Layer Japanese Journal of Applied Physics. ,vol. 40, pp. 1624- 1628 ,(2001) , 10.1143/JJAP.40.1624
Koichi Yasuda, Kotaro Kurokawa, Multi-layered optical disc ,(2002)
Kenya Yokoi, Information recording apparatus and method ,(2002)
Nobuo Akahira, Kenichi Nishiuchi, Kenichi Nagata, Noboru Yamada, Optical information recording medium, recording and reproducing method therefor and optical information recording and reproduction apparatus ,(1999)
Akemi Hirotsune, Takashi Namekawa, Motoyasu Terao, Kouichi Moritani, Yasushi Miyauchi, Toshimichi Shintani, Hiroki Yamamoto, Takashi Naitou, Optical recording medium and optical memory device ,(1998)
Minoru Takeda, Motohiro Furuki, Optical disk having recording capacity of about at least 15 GB ,(2000)