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Predecessor
21.18
Displaying 1-9 of 9 articles from this issue
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Article type: Cover
Pages Cover1-
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (14K) -
Article type: Index
Pages Toc1-
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (38K) -
M. Ogawa, M. Kubogata, S. Ohkubo, M. Okada, M. ItohArticle type: Article
Pages 1-6
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSPhase change optical disk with optical phase encoding was adapted to land/groove recording. R/W characteristics of this disk was measured under the condition of 640nm wavelength, 0.56μ m track pitch, 0.285μ m bit pitch and (1-7) modulation code. The disk has the characteristics equal to a conventional land/groove disk. Moreover, resolution, overwrite jitters and cross erase of the optical phase encoding disk were compared with that of the conventional one. These characteristics of the disk is superior to that of the conventional one.View full abstractDownload PDF (644K) -
M. Miyamoto, A. Hirotsune, Y. Miyauchi, M. TeraoArticle type: Article
Pages 7-
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSCorrelation between laser pulse wave form and recorded mark shape in mark edge recording on a phase change optical disk has been studied using heat transfer simulation and transmission electron microscopy. The mark shape corresponds to distribution of holding time at cryatalization temperature during laser pulse irradiation on the recording film. Relationships between the wave form and the mark shape or crystal grain size around the mark are explaned by analyzing the mark recording process. Control of holding time at transition temperature region between melting point and crystalization temperature by the wave form is important for reducing erase residue.View full abstractDownload PDF (120K) -
Kenji Narumi, Yasuo Kitaoka, Kenichi Nishiuchi, Nobuo AkahiraArticle type: Article
Pages 9-14
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSFeasibility of reading a phase change optical disk at wavelength of 430nm is studied in order to realize high density rewritable optical media. A second harmonic generation (SHG) blue laser was adopted as an optical source. To obtain high carrier to noise ratio (CNR), structure of a phase change optical disk was optimized for blue wavelength region. As a result of reading marks written at wavelength of 680nm, recording density was advanced in proportional to spot size. A CNR of 48dB at the mark length of 0.35μm was achieved at a wavelength of 430nm.View full abstractDownload PDF (696K) -
S. Ohta, Y. Mizutani, Y. Kimura, Y. Shimizu, M. Kamei, K. ChidaArticle type: Article
Pages 15-20
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have developed a Multi-Scan Converter LSI, which is capable of converting several computer signals and a Hi-Vision video signal to an NTSC signal. This LSI has the filter which reduces a number of pixel to realize square pixel images and variable-sized window display. The LSI also contains three D/A converters, line memories and an NTSC digital encoder, so that it provides a scan converter system with a limited number of external components.View full abstractDownload PDF (501K) -
N. Nobukuni, T. Ohno, K. Takada, M. HorieArticle type: Article
Pages 21-26
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSPhase-change optical recording media for blue-green wavelength region was investigated. The erasability decreased significantly at shorter wavelength, because the temperature distribution across a beam scanning direction becomes steep, as the beam spot diameter becomes small in proportion to λ/NA. By using a very thin upper layer with a thickness of 0-10nm, thermal diffusion across the track could be enhanced. Consequently, the erasable width could be extended and the erasability was improved. Otherwise, when the amorphous mark width was confined by a groove width and the phase difference between amorphous and crystalline states was used, high erasability of more than 20dB was maintained. Finally, overwrite repeatability of more than 10000 cycle were demonstrated.View full abstractDownload PDF (958K) -
S. Taniguchi, E. Muramatsu, K. Kuroda, A. InoueArticle type: Article
Pages 27-33
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe describe the basic characteristics and physical specifications of the new write once disc called DVD-Recordable (DVD-R) disc in the present condition. User data capacity of 3.9Gbytes perside have been technically realized, and the capacity of 4.7Gbytes per side which is equal to the capacity of the ROM disc is being developed now. The recorded DVD-R disc must be compatible with the DVD Read-Only disc (DVD-ROM and DVD-VIDEO disc) to be played back on any DVD-player. After discussing these characteristics, we describe DVD-R system architecture and linking scheme for the additional recording.View full abstractDownload PDF (830K) -
Article type: Appendix
Pages App1-
Published: March 07, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (72K)
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