Guoxuan Zhang, Wendong Xu, Hezong Ge, L. Men, B. Gan, Dunhe Yu
We have developed a testing system with 514.5 nm argon ion laser to test the static properties of optical disks. The whole testing system is controlled by a computer. The laser power, pulse duration time and external applied magnetic field can be adjusted in a wide range. The focused spot size is less than 1 micrometers on the recording layer which allows high laser power irradiation, up to 30 mW. This testing system can evaluate the writing and erasing characteristics of phase-changes and magneto-optical disks. The design idea and experimental results of this testing system are presented.
{"title":"Static testing system for optical disks with an argon ion laser","authors":"Guoxuan Zhang, Wendong Xu, Hezong Ge, L. Men, B. Gan, Dunhe Yu","doi":"10.1117/12.248715","DOIUrl":"https://doi.org/10.1117/12.248715","url":null,"abstract":"We have developed a testing system with 514.5 nm argon ion laser to test the static properties of optical disks. The whole testing system is controlled by a computer. The laser power, pulse duration time and external applied magnetic field can be adjusted in a wide range. The focused spot size is less than 1 micrometers on the recording layer which allows high laser power irradiation, up to 30 mW. This testing system can evaluate the writing and erasing characteristics of phase-changes and magneto-optical disks. The design idea and experimental results of this testing system are presented.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123843237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical array and special data arrangement affect data sharing feature of Video-on-Demand system significantly. Some aspects related to maximum user number have been analyzed in theory and verified in experiment.
{"title":"Data sharing through optical array in a video-on-demand (VOD) system","authors":"Haichuan Zhang, Longfa Pan, Duanyi Xu","doi":"10.1117/12.248709","DOIUrl":"https://doi.org/10.1117/12.248709","url":null,"abstract":"Optical array and special data arrangement affect data sharing feature of Video-on-Demand system significantly. Some aspects related to maximum user number have been analyzed in theory and verified in experiment.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126259975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper reports our study of a novel image sequence coding scheme based on 3D image segmentation. The intervals between successive reference frames are adaptively adjusted to increase the compensability of image sequences. The bit rate allocation takes the advantage of the temporal masking of human vision system.
{"title":"Adaptive image sequence coding scheme for CD-ROM applications","authors":"Jianping Fan, Liming Zhang, D. Xing, Fuxi Gan","doi":"10.1117/12.248718","DOIUrl":"https://doi.org/10.1117/12.248718","url":null,"abstract":"This paper reports our study of a novel image sequence coding scheme based on 3D image segmentation. The intervals between successive reference frames are adaptively adjusted to increase the compensability of image sequences. The bit rate allocation takes the advantage of the temporal masking of human vision system.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125754688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jun Li, Ping Chen, D. Zheng, T. Okazaki, M. Hayami
The spectrum characteristic and photostability of three near-infrared absorbing cyanine dyes with typical structure have been studied. The results show that the stability of three dyes with molecular structure of heterocyclic stem nuclei against photooxidation is in such order: benzoxazole > benzothiazole > benselenazole. It was found through quenching experiments that the photooxidation of cyanine dyes not only relates to the singlet oxygen but also to the superoxide anoin, however single oxygen plays a dominant role. We have succeeded in drastically improving the photostability of three cyanine dyes by using a dithiol nickel chelate as a singlet oxygen quencher.
{"title":"Study on the photo-oxidation of near-infrared absorbing cyanine dye","authors":"Jun Li, Ping Chen, D. Zheng, T. Okazaki, M. Hayami","doi":"10.1117/12.248688","DOIUrl":"https://doi.org/10.1117/12.248688","url":null,"abstract":"The spectrum characteristic and photostability of three near-infrared absorbing cyanine dyes with typical structure have been studied. The results show that the stability of three dyes with molecular structure of heterocyclic stem nuclei against photooxidation is in such order: benzoxazole > benzothiazole > benselenazole. It was found through quenching experiments that the photooxidation of cyanine dyes not only relates to the singlet oxygen but also to the superoxide anoin, however single oxygen plays a dominant role. We have succeeded in drastically improving the photostability of three cyanine dyes by using a dithiol nickel chelate as a singlet oxygen quencher.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130114948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Men, F. Jiang, Chao-Te Liu, Huiyong Liu, F. Gan
The optical properties of GeSb2Te4 thin films prepared by vacuum RF-sputtering method at the wavelength region of 400 - 830 nm were studied. A comparatively large absorption was observed in the wavelength range 400 - 600 nm, which matches with the wavelengths of Argon laser. The optical storage characterizations of GeSb2Te4 thin film demonstrate clearly that larger reflectivity contrast can be obtained at lower power Argon laser (514.5 nm) irradiation. The erasing contrast is relatively lower but can be improved by multi-layer films match.
{"title":"Short-wavelength optical storage properties of GeSb2Te4 phase-change thin films","authors":"L. Men, F. Jiang, Chao-Te Liu, Huiyong Liu, F. Gan","doi":"10.1117/12.248700","DOIUrl":"https://doi.org/10.1117/12.248700","url":null,"abstract":"The optical properties of GeSb2Te4 thin films prepared by vacuum RF-sputtering method at the wavelength region of 400 - 830 nm were studied. A comparatively large absorption was observed in the wavelength range 400 - 600 nm, which matches with the wavelengths of Argon laser. The optical storage characterizations of GeSb2Te4 thin film demonstrate clearly that larger reflectivity contrast can be obtained at lower power Argon laser (514.5 nm) irradiation. The erasing contrast is relatively lower but can be improved by multi-layer films match.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125502033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fulong Tang, D. Gu, Qiying Chen, Xiaodong Tang, Congshan Zhu, F. Gan, H. Tian, Z. Yao
A cyanine-in-polymer film was prepared by spin-coating process on pregrooved polycarbonate substrate, and its optical storage performance was studied. The reflectance and absorbance of the film at 830 nm wavelength are high enough for optical storage. With optimum recording condition, 58 dB of carrier-to-noise ratio was obtained for single layer disk. Both of carrier-to-noise ratio and carrier signal level are proportional to log of the reflectivity change of the film before and after laser recording.
{"title":"Optical storage performance of a cyanine-in-polymer film","authors":"Fulong Tang, D. Gu, Qiying Chen, Xiaodong Tang, Congshan Zhu, F. Gan, H. Tian, Z. Yao","doi":"10.1117/12.248691","DOIUrl":"https://doi.org/10.1117/12.248691","url":null,"abstract":"A cyanine-in-polymer film was prepared by spin-coating process on pregrooved polycarbonate substrate, and its optical storage performance was studied. The reflectance and absorbance of the film at 830 nm wavelength are high enough for optical storage. With optimum recording condition, 58 dB of carrier-to-noise ratio was obtained for single layer disk. Both of carrier-to-noise ratio and carrier signal level are proportional to log of the reflectivity change of the film before and after laser recording.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129134551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper introduces a new method to simulate the pre- formatted information on optical disk cartridges. Using personal computer and a few data output circuits, pre- formatted information on magneto-optical disks specified by ISO/IEC 13549 standard can be generated continuously at a high rate.
{"title":"Computer simulation of the preformatted information on 130-mm optical disk cartridges","authors":"Yuanying Xie, Wendong Xu, Xishan Li","doi":"10.1117/12.248721","DOIUrl":"https://doi.org/10.1117/12.248721","url":null,"abstract":"This paper introduces a new method to simulate the pre- formatted information on optical disk cartridges. Using personal computer and a few data output circuits, pre- formatted information on magneto-optical disks specified by ISO/IEC 13549 standard can be generated continuously at a high rate.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131151116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hui-Qin Ge, Li-Ding Wang, Xiaoshu Tong, Y. Zhang, Li-xin Liu
In this paper, introductions are focused on the principle, structure and precision of the laser-cutting machine, which has been used to etch servo-grooves and preformat information for making the master optical disk.
本文重点介绍了激光切割机的工作原理、结构和精度，并将其用于刻蚀伺服槽和制作主光盘的预格式化信息。
{"title":"Design of main-body structure of laser-cutting machine for optical disks","authors":"Hui-Qin Ge, Li-Ding Wang, Xiaoshu Tong, Y. Zhang, Li-xin Liu","doi":"10.1117/12.248713","DOIUrl":"https://doi.org/10.1117/12.248713","url":null,"abstract":"In this paper, introductions are focused on the principle, structure and precision of the laser-cutting machine, which has been used to etch servo-grooves and preformat information for making the master optical disk.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124668233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An analysis of the RLL (1,7)-PWM method for magneto-optical disks and the RLL (2,7)-PPM method for phase-change disks is presented. The reasons why they exist simultaneously is the light of the characteristics of recording media are discussed.
{"title":"Modulation recording method for 90-mm optical disk","authors":"Rui Wang","doi":"10.1117/12.248720","DOIUrl":"https://doi.org/10.1117/12.248720","url":null,"abstract":"An analysis of the RLL (1,7)-PWM method for magneto-optical disks and the RLL (2,7)-PPM method for phase-change disks is presented. The reasons why they exist simultaneously is the light of the characteristics of recording media are discussed.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122962889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Rong, Y. Lu, Rui Wang, Kaihua Yuan, Zhonglin Zhang, Luqing Shi
International Standards of Optical disks: CD-ROM, CD-R, CD- E, magneto-optical disk and heat-mode phase-change optical disk are presented. DVD-RAM based on photon excited effects: electron-hole pair generation and recombination in nonlinear materials is discussed.
{"title":"International standards of optical disk and DVD-RAM technology","authors":"A. Rong, Y. Lu, Rui Wang, Kaihua Yuan, Zhonglin Zhang, Luqing Shi","doi":"10.1117/12.248695","DOIUrl":"https://doi.org/10.1117/12.248695","url":null,"abstract":"International Standards of Optical disks: CD-ROM, CD-R, CD- E, magneto-optical disk and heat-mode phase-change optical disk are presented. DVD-RAM based on photon excited effects: electron-hole pair generation and recombination in nonlinear materials is discussed.","PeriodicalId":212484,"journal":{"name":"Optical Storage and Information Data Storage","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123360877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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