Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Shunji Yoshimura"'
Publikováno v:
IEEE 1992 International Conference on Consumer Electronics Digest of Technical Papers.
Magnetically induced superresolution (MSR) technology expands the readout resolution limit of the optical disk system. A MSR-by-RAD (rear aperture detection) disk, was used to demonstrate a crosstalk level of less than -44 dB at a track pitch of 0.8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0af73016fce1a7ce309a106cd6ddb8a
https://doi.org/10.1109/icce.1992.697252
https://doi.org/10.1109/icce.1992.697252
Autor:
Yasuyuki Takeshita, Keiichi Tsutsui, Masayuki Arai, Shunji Yoshimura, Atsushi Fukumoto, Katsuhisa Aratani, Shinichi Kai
Publikováno v:
Joint International Symposium on Optical Memory and Optical Data Storage 1999.
A new class of super resolution method was proposed for magneto-optical recording by T. Shiratori et.al. The method called DWDD (Domain Wall Displacement Detection) is principled on momentary magnetic wall displacement during a read-out.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d663bbb5b622330956b0f9acec6af8c6
https://doi.org/10.1117/12.997613
https://doi.org/10.1117/12.997613
Autor:
Atsushi Fukumoto, Shunji Yoshimura
Publikováno v:
SPIE Proceedings.
The transition jitters of a Double-masked Rear Aperture Detection (D-RAD) readout werecalculated as a function of defocusing, disk tilt and recording mark width. The modelling resultssuccessfully explain our experimental results. Large jitter toleran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f18233cc5a0c1ec81c0b0420ca35770d
https://doi.org/10.1117/12.137545
https://doi.org/10.1117/12.137545
Autor:
Masumi Ohta, Shunji Yoshimura, Atsushi Fukumoto, Katsuhisa Aratani, Toshiki Udagawa, Masahiko Kaneko
Publikováno v:
SPIE Proceedings.
The cut-off frequency was extended by a factor of more than two using a magneto-optical disk with thermally induced mask.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::450d729a6831fd6413cf58964b8af66e
https://doi.org/10.1117/12.45902
https://doi.org/10.1117/12.45902
Autor:
Atsushi Fukumoto, Shunji Yoshimura, Toshiki Udagawa, Katsuhisa Aratani, Masumi Ohta, Masahiko Kaneko
Publikováno v:
Optical Data Storage Topical Meeting.
In the conventional optical disk systems, the optical cut-off frequency is limited by the numerical aperture(NA) of the objective lens and the wavelength of the light source due to the diffraction.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eab36ae1fb72dea71717dc30544f0886
https://doi.org/10.1364/ods.1991.tub4
https://doi.org/10.1364/ods.1991.tub4
Autor:
Masayuki Arai, Atsushi Fukumoto, Katsuhisa Aratani, Keiichi Tsutsui, Shinichi Kai, Yasuyuki Takeshita, Shunji Yoshimura
Publikováno v:
Japanese Journal of Applied Physics. 39:1757
High-density magneto-optical (MO) recording using a land/groove structured domain wall displacement detection (DWDD) medium has been achieved with a digital versatile disc (DVD) dimensional optical head including a 664-nm wavelength laser diode and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74594b8e4e7a188141ecbb87aadacf09
https://doi.org/10.1143/jjap.39.1757
https://doi.org/10.1143/jjap.39.1757
Autor:
Atsushi Fukumoto, Shunji Yoshimura
Publikováno v:
Japanese Journal of Applied Physics. 39:986
We have examined two unique data error causes for domain wall displacement detection (DWDD) media, dropout and bit shift, using 8–9 modulation and (1, 7)-RLL modulation. We have determined that dropout depends only on the mark length of recorded da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccc8e8b3bef3e7d3d21d71cbbbd739b0
https://doi.org/10.1143/jjap.39.986
https://doi.org/10.1143/jjap.39.986
Publikováno v:
Japanese Journal of Applied Physics. 31:576
Magnetically induced super resolution (MSR) is a new technology developed by us. It more than doubles the readout resolution limit of a conventional optical disk system without shortening the laser wavelength or increasing the numerical aperture (N.A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d5b6d47ca7d3b40c9e2ecaf30ac03d8
https://doi.org/10.1143/jjap.31.576
https://doi.org/10.1143/jjap.31.576
Autor:
Shinjiro Matsuura, Toshikazu Yoshikawa, Yoshiyuki Sasaki, Isao Sakaida, Kazunari Yamamoto, Keiki Ogino, Shinji Oka, Kazuya Matsuda, Shunji Yoshimura, Tadayoshi Takemoto, Yukinori Okazaki
Publikováno v:
Journal of Clinical Biochemistry and Nutrition. 3:189-193
It has been suggested that superoxide radicals play an important role in the pathogenesis of gastric mucosal lesions after ischemia. To prove a participation of O-2 in gastric mucosal lesion formation, diethyldithiocarbamate (DDC), an inhibitor of Cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4361e958fe8837ab02dcb1f3bbc7bddf
https://doi.org/10.3164/jcbn.3.189
https://doi.org/10.3164/jcbn.3.189
Publikováno v:
Japanese Journal of Applied Physics; February 2000, Vol. 39 Issue: 2 p986-986, 1p