Analysis showed that the servo system should have less than 0.4 um dynamic focus error. This accuracy could be guaranteed with a standard high bandwidth second order loop with lead lag compensation and a low frequency integrator. In the electronic design attention has been paid to avoid signal saturation during seeks due to optical crosstalk between the focus and the tracking channel. This crosstalk is discussed in a companion paper.(2) A measurement of the focus loop transfer function can be found in figure 1.
{"title":"An Interactive Multiple Servo System for an Optical/Digital Drive","authors":"K. W. Getreuer, T. E. Berg, J. Hulshof","doi":"10.1364/ods.1984.fcb1","DOIUrl":"https://doi.org/10.1364/ods.1984.fcb1","url":null,"abstract":"Analysis showed that the servo system should have less than 0.4 um dynamic focus error. This accuracy could be guaranteed with a standard high bandwidth second order loop with lead lag compensation and a low frequency integrator. In the electronic design attention has been paid to avoid signal saturation during seeks due to optical crosstalk between the focus and the tracking channel. This crosstalk is discussed in a companion paper.(2) A measurement of the focus loop transfer function can be found in figure 1.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132669844","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}
Kodak's 14" optical disk drive uses Run-Length-Limited (RLL) encoding techniques to increase the in-track packing density. In a pulse length encoding scheme using RLL codes, the clock and data are encoded in the mark edges and not in the mark itself. The use of such encoding schemes allows an increase in the in-track density over pulse position encoding techniques. The price of using this technique is that the CNR and linearity of the media must be consistent and of high quality.
{"title":"Head Media Interface Tolerancing Kodak Optical Head & Kodak LWR Media","authors":"J. J. Miceli, Scott B. Chase, Scott A. Gerger","doi":"10.1364/ods.1987.tha3","DOIUrl":"https://doi.org/10.1364/ods.1987.tha3","url":null,"abstract":"Kodak's 14\" optical disk drive uses Run-Length-Limited (RLL) encoding techniques to increase the in-track packing density. In a pulse length encoding scheme using RLL codes, the clock and data are encoded in the mark edges and not in the mark itself. The use of such encoding schemes allows an increase in the in-track density over pulse position encoding techniques. The price of using this technique is that the CNR and linearity of the media must be consistent and of high quality.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133244534","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}
The world's requirements for the storage of digitized information is increasing at a compound annual growth rate of 30 to 35% per year. Optical storage systems offer a logical alternative for many current and future applications in the scientific and business environments. A write-once optical recording system has been developed that offers both high capacity (6.8 gigabytes per disk) and high user data rate (maximum of 1.0 megabyte per second at the disk). The media is based on an organic dye/binder recording layer, coated on a 14-inch aluminum substrate and protected with a thin off-spaced cover sheet. The optical disk recorder is coupled with an intelligent controller that supports SCSI and IPI-3 interfaces. An overview of Eastman Kodak Company's approach to large optical recording systems will be discussed.
{"title":"The Kodak Optical Storage System","authors":"R. Graham","doi":"10.1364/ods.1987.tha1","DOIUrl":"https://doi.org/10.1364/ods.1987.tha1","url":null,"abstract":"The world's requirements for the storage of digitized information is increasing at a compound annual growth rate of 30 to 35% per year. Optical storage systems offer a logical alternative for many current and future applications in the scientific and business environments. A write-once optical recording system has been developed that offers both high capacity (6.8 gigabytes per disk) and high user data rate (maximum of 1.0 megabyte per second at the disk). The media is based on an organic dye/binder recording layer, coated on a 14-inch aluminum substrate and protected with a thin off-spaced cover sheet. The optical disk recorder is coupled with an intelligent controller that supports SCSI and IPI-3 interfaces. An overview of Eastman Kodak Company's approach to large optical recording systems will be discussed.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131833525","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}
C. Chung, M. Alexander, D. Evanicky, C. W. Harrison
The 3M Optical Recording media consists of four essential layers. This quadri-layer structure is shown to be fundamentally stable in severe temperature and humidity environments. The impact of pregrooved plastic substrate materials on the stability of this structure is discussed.
{"title":"Stability of 3M Draw Optical Recording Media","authors":"C. Chung, M. Alexander, D. Evanicky, C. W. Harrison","doi":"10.1364/ods.1984.thcb1","DOIUrl":"https://doi.org/10.1364/ods.1984.thcb1","url":null,"abstract":"The 3M Optical Recording media consists of four essential layers. This quadri-layer structure is shown to be fundamentally stable in severe temperature and humidity environments. The impact of pregrooved plastic substrate materials on the stability of this structure is discussed.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134065377","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}
M. Nakajima, M. Hamada, M. Moribe, H. Hirano, K. Itoh, S. Ogawa
Improvement of carrier to noise ratio (C/N) is one of the most important problems of optical disk media.
提高载波噪声比(C/N)是光盘介质的重要问题之一。
{"title":"Reduction of Media Noise in Optical Disks","authors":"M. Nakajima, M. Hamada, M. Moribe, H. Hirano, K. Itoh, S. Ogawa","doi":"10.1364/ods.1985.thcc5","DOIUrl":"https://doi.org/10.1364/ods.1985.thcc5","url":null,"abstract":"Improvement of carrier to noise ratio (C/N) is one of the most important problems of optical disk media.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130373370","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}
Application areas of optical disk systems have been expanding slowly but stably into the market during these few years. So far optical disks systems are widely used for image and document data storage. This application area is thought to be the most appropriate for the present performances and the functions of optical disks. One of the biggest limiting factor of the present optical disks for applying to directly competitive market with the conventional magnetic disk storage systems is their slow data processing time including data transfer rate, accessing time, and disk rotaion time. These problems have to be solved in order to apply optical disks to more general application areas where conventional magnetic disk storage systems are widely used.
{"title":"Advanced Technologies for the Next Generation Optical Disks","authors":"Y. Tsunoda, M. Ojima","doi":"10.1364/ods.1987.wd1","DOIUrl":"https://doi.org/10.1364/ods.1987.wd1","url":null,"abstract":"Application areas of optical disk systems have been expanding slowly but stably into the market during these few years. So far optical disks systems are widely used for image and document data storage. This application area is thought to be the most appropriate for the present performances and the functions of optical disks. One of the biggest limiting factor of the present optical disks for applying to directly competitive market with the conventional magnetic disk storage systems is their slow data processing time including data transfer rate, accessing time, and disk rotaion time. These problems have to be solved in order to apply optical disks to more general application areas where conventional magnetic disk storage systems are widely used.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116876553","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}
Most cartographic mapping is done photogrammetrically with the use of photographs taken from an airplane. Remote sensing images will gain in importance for cartographic mapping with the coming satellites, such as SPOT.
{"title":"DIGI-PHOTO Integrating Write-Once Optical Disk as an Active Component in Mapping from Digitized Photographs","authors":"Erling Maartmann-Moe, Jens Bech Jorgensen","doi":"10.1364/ods.1985.wcc4","DOIUrl":"https://doi.org/10.1364/ods.1985.wcc4","url":null,"abstract":"Most cartographic mapping is done photogrammetrically with the use of photographs taken from an airplane. Remote sensing images will gain in importance for cartographic mapping with the coming satellites, such as SPOT.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121769938","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}
High performance beamsplitting, polarizing and beam-steering optics used in optical disk drive heads have some requirements which are not always compatible with the low cost goal which is mandatory for high volume.
{"title":"Disk Drive Optics: Design Factors Affecting Manufacturing and Cost in Volume.","authors":"R. Westney, B. Swaby","doi":"10.1364/ods.1987.fc4","DOIUrl":"https://doi.org/10.1364/ods.1987.fc4","url":null,"abstract":"High performance beamsplitting, polarizing and beam-steering optics used in optical disk drive heads have some requirements which are not always compatible with the low cost goal which is mandatory for high volume.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129248084","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}
Mechanical, Optical, Read/Write and Environmental guidelines for Optical Storage Media will be presented. The guidelines were created by a group of optical storage media and drive company representatives. The purpose of these guidelines is to assist others in optical media and/or drive design development and provide definitions and test methods for those interested in optical media storage.
{"title":"Optical Storage Media Guidelines","authors":"T. Olson","doi":"10.1364/ods.1983.tub1","DOIUrl":"https://doi.org/10.1364/ods.1983.tub1","url":null,"abstract":"Mechanical, Optical, Read/Write and Environmental guidelines for Optical Storage Media will be presented.\u0000 The guidelines were created by a group of optical storage media and drive company representatives. The purpose of these guidelines is to assist others in optical media and/or drive design development and provide definitions and test methods for those interested in optical media storage.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130571579","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. Huijser, B. Jacobs, L. Vriens, J. Markvoort, A. Spruijt, P. Vromans
Accelerated ageing tests on discs with Te-alloys for ablative optical recording show that these media meet the requirements for long-term data storage.
对烧蚀光学记录用te合金光盘的加速老化试验表明，这些介质满足长期数据存储的要求。
{"title":"Ageing Characteristics of DOR Media","authors":"A. Huijser, B. Jacobs, L. Vriens, J. Markvoort, A. Spruijt, P. Vromans","doi":"10.1364/ods.1983.thb1","DOIUrl":"https://doi.org/10.1364/ods.1983.thb1","url":null,"abstract":"Accelerated ageing tests on discs with Te-alloys for ablative optical recording show that these media meet the requirements for long-term data storage.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"2167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127469924","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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