All issues
Predecessor
22.14
Displaying 1-10 of 10 articles from this issue
- |<
- <
- 1
- >
- >|
-
Article type: Cover
Pages Cover1-
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (15K) -
Article type: Index
Pages Toc1-
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (47K) -
masashi KUBOTA, shohei SEKINEArticle type: Article
Pages 1-8
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have successfully developed optical-video-disk-camera which used a land/groove recording method. By introducing following 2 methods, stable motions in optical-video-disk-camera were confirmed.(1)Cancellation of disturbance acceleration using acceleration sensors & mechanical dampers. (2)Tracking servo ON timing sequencer, which applied L/G detection.View full abstractDownload PDF (747K) -
Satoshi Jinno, Masataka Yamaguchi, Hideo Kudo, Eiji Muramatsu, Shoji T ...Article type: Article
Pages 9-16
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe studied the feasibility of the rewritable optical disc, which can be played by DVD-ROM player in the extension of the DVD-R system. It resulted the disc whose characteristics are equivalent to those of the DVD-R disc, although its reflectivity is not confirmed to the DVD-ROM single-layer disc specification but to that of the dual-layer disc specification (Rtop≩18%). The disc uses a groove recording method and showed the following characteristics : modulation≩60%, jiter≨8%, the number of direct overwrite cycles≩1000 and data capacity 3.95 GB/side. In addition, the disc is conformed to tracking signal criteria (Δt/T≩0.5) claimed by the DVD-ROM specifications so that it is possible to use the phase detection tracking method. These facts show the feasibility of the rewritable disc having good compatibility with the DVD-ROM system.View full abstractDownload PDF (792K) -
Hidehiko Kando, Takeshi Maeda, Makoto Miyamoto, Akemi Hirotsune, Motoy ...Article type: Article
Pages 17-24
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSPhase change mark simulator is investigated. Nucleation, crystal growth, and recrystallization at amorphous/crystal boundary are taken into consideration. Crystallization is evaluated with 3-dimensional thermal analysis. Modeling of phase change process, numerical treatments, and evaluation of crystallization speed are mentioned. Mark shapes of experiments and simulation are in good agreement. Calculated recrystallization area also agree with the area obtained from actual marksView full abstractDownload PDF (1062K) -
Y. Suzuki, N. Mamiya, H. Watanabe, K. Asano, K. Tanase, Y. UchiharaArticle type: Article
Pages 25-30
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe track pitch on a disk becomes narrower as the recording density becomes higher. So, recording at the optimum recording power is very important to maintain high signal quality for land/groove (L/G) recording. In this paper, we studied power calibration using a wobbled groove. We can determine the optimum recording power easier by using the side band spectrum which appears due to the wobble influence.View full abstractDownload PDF (588K) -
M. Kuwahara, K. Watabe, H. Hasegawa, H. Kobori, K. Yusu, K. Ichihara, ...Article type: Article
Pages 31-36
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDVD-RAM (2.6GB/side) which adopts phase-change recording will be marketed soon. Several attempts have been made to realize much higher recording density. However, the increase in overwrite jitter which is caused by the different temperature rise between the amorphous and crystalline state is an obstacle to improve recording density. In this report, high-density recording capability of the five-layered phase-change disk, which controls absorbance of the two states, and its readout compatibility for bluish-purple wavelength are discussed.View full abstractDownload PDF (647K) -
Hideki Hatano, Takashi Yamaji, Satoru Tanaka, Yasunori Furukawa, Kenji ...Article type: Article
Pages 37-44
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe stoichiometric LiNbO_3 crystals containing nonstoichiometric defects much less than congruent LiNbO_3 were grown by the novel double crucible CZ method. These crystals exhibit some advantageous properties for the digital holographic data storage test. This superiority was obvious in the writing speed and the diffraction efficiency at the geometry using extraordinary polarization. The high performance of stoichiometric LiNbO_3 in digital hologram test was confirmed by measuring some related parameters such as linear electro-optic constants, photoconductivity and photogalvanic current.View full abstractDownload PDF (999K) -
Shogo Yagi, Tadayuki Imai, Hiroki YamazakiArticle type: Article
Pages 45-52
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe successfully controlled the effective trap density in the photorefractive strontium barium niobate single crystals by heat treatment without affecting their absorption. The annealing temperature should be higher in the case higher optical sensitivity is desired while the lower temperature is required in the case storage capacity and higher diffraction efficiency are preferable. Annealing duration was also determined by obtaining the oxygen diffusion constant in SBN. We also demonstrated the digital holographic storage in which the recording speed was 20kbps at 10mW exposure and 1/4 coding was proposed.View full abstractDownload PDF (855K) -
Article type: Appendix
Pages App1-
Published: March 04, 1998
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (72K)
- |<
- <
- 1
- >
- >|