Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Shigemi Maeda"'
Publikováno v:
Japanese Journal of Applied Physics. 43:7097-7101
Adaptive equalization is essential in achieving wider system margins, such as tilt margin and defocus margin, in optical disk systems using partial response maximum likelihood (PRML) detection method. The most conventional method is the combination o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01193208ac0b609362b8617e351304b0
https://doi.org/10.1143/jjap.43.7097
https://doi.org/10.1143/jjap.43.7097
Publikováno v:
IEEE Transactions on Magnetics. 36:591-596
A technique for reducing cross-recording on data storage media with high track density is described. In order to detect cross-recording sensitively, an inverted mark pattern was first recorded on adjacent tracks and then synchronized with a normal re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a0b55be4e27f8da2b6827d74af690f4
https://doi.org/10.1109/20.846223
https://doi.org/10.1109/20.846223
Autor:
Hideaki Sato, H. Fuji, M. Mieda, Shigemi Maeda, Akira Takahashi, M. Tobita, Yoshiteru Murakami, T. Okumura
Publikováno v:
IEEE Transactions on Magnetics. 36:597-603
A new recording and readout technique for land and groove recording on a magnetic super-resolution (MSR) disk is described. The technique uses specifically premastered clock marks. To generate a stable clock signal, the clock marks are fabricated wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::684d2137222ef1513f2886febd07a4c1
https://doi.org/10.1109/20.846224
https://doi.org/10.1109/20.846224
Publikováno v:
IEEE Transactions on Magnetics. 35:2047-2052
An approach of readout aperture control for magnetic super-resolution (MSR) readout is described. In order to detect the size of a readout aperture generated by a focused laser beam on an MSR disk, a new mark pattern consisting of short and long mark
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a26cb728666667b46e3cc14567a25b94
https://doi.org/10.1109/20.764909
https://doi.org/10.1109/20.764909
Autor:
Masaki Yamamoto, Akira Takahashi, Yasuhiro Harada, Hideharu Tajima, Yoshiteru Murakami, Tetsuya Hayashi, Jun Akiyama, Shigemi Maeda, Hirohisa Yamada, Go Mori
Publikováno v:
Japanese Journal of Applied Physics. 47:6013-6015
Bit error rate (bER) of an energy-gap-induced super-resolution (EG-SR) read-only-memory (ROM) disc with a zinc oxide (ZnO) film was measured in Blu-ray Disc (BD) optics by the partial response maximum likelihood (PRML) detection method. The experimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54f36d24bfb09d8192da97b80656f182
https://doi.org/10.1143/jjap.47.6013
https://doi.org/10.1143/jjap.47.6013
Autor:
Tetsuya Okumura, Jun Akiyama, Yoshiteru Murakami, Tetsuya Hayashi, Akira Takahashi, Shigemi Maeda
Publikováno v:
Japanese Journal of Applied Physics. 47:5971-5973
The areal density of holographic memory can be increased by decreasing the aperture size of the optical system; however, this causes the deterioration of a reproduced image due to the elimination of the high-frequency components of the image. We have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f67280535312e06f01cd63092c8bc43
https://doi.org/10.1143/jjap.47.5971
https://doi.org/10.1143/jjap.47.5971
Publikováno v:
IEEE Transactions on Consumer Electronics. 41:510-515
The authors have developed the disc format for land/groove recording on a magneto-optical disc in which only a single side of the groove is wobbled. The format is suited for a rewritable digital video disc system. >
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e2623497dd751a457f37100fc463dbc
https://doi.org/10.1109/30.468037
https://doi.org/10.1109/30.468037
Publikováno v:
International Symposium on Optical Memory and Optical Data Storage.
We proposed a new method for adjusting write strategy in partial response maximum likelihood systems. It utilizes novel indices calculated from the sequenced amplitude margin and produces both a low bit error rate (BER) and a wide recording power mar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::861e24e50da62a80c1b40e3beda1379b
https://doi.org/10.1364/isom_ods.2005.tub3
https://doi.org/10.1364/isom_ods.2005.tub3
Publikováno v:
Optical Data Storage.
A new adaptive equalization method for partial response maximum likelihood system using sequenced amplitude margin was developed, which could improve tangential tilt margin remarkably.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e000d85a39fc26800c1d6c3e7c40f9f
https://doi.org/10.1364/ods.2003.tub3
https://doi.org/10.1364/ods.2003.tub3
Autor:
Shigemi Maeda, Tetsuya Okumura, Jun Akiyama, Tomiyuki Numata, Akira Takahashi, Takeshi Yamaguchi
Publikováno v:
Japanese Journal of Applied Physics. 41:1783-1784
We improve a media evaluation method for partial response maximum likelihood (PRML) systems using a sequenced amplitude margin (SAM). The improved method has many advantages over direct bit error rate (BER) measurement; it needs fewer samples and les
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b7960455d83154bec51479bdc2d7005
https://doi.org/10.1143/jjap.41.1783
https://doi.org/10.1143/jjap.41.1783