Translator Disclaimer
12 April 1985 High-Performance Optical Disk Jukebox
Author Affiliations +
Proceedings Volume 0529, Optical Mass Data Storage I; (1985) https://doi.org/10.1117/12.946438
Event: 1985 Los Angeles Technical Symposium, 1985, Los Angeles, United States
Abstract
An advanced optical disk recorder has been developed for very-high-performance data capture, data storage, and data sorting applications that cannot be cost-effectively addressed by alternate magnetic or optical recording systems. The recording approach uses a three-channel, argon laser-based optical system to input/ output user data at rates up to 100 Mbps and store up to 1011 userbits per side of a 14-inch disk. This is achieved at a disk rotation rate under 30 rps and at a corrected read-bit error rate less than 10-9 by the use of an efficient data encoding algorithm, read-while-write verification, and a two-level error detection and correction architecture. The automated disk handling method achieves less than six-second access to the data from 68 on-line disks, with provision made for future interface to an external storage module to achieve automated access to several hundred disks in under 15 seconds. The recorder design provides for a growth in capability to accommodate a.0-300 Mbps user data rate for a concentric data format on the disk or a fixed, continuous rate to 450 Mbps for a spiral format with a single nine-channel write/read head, to simultaneously write to or read from a double-sided disk, and to add a second turntable. Operational reliability and maintainability has been enhanced with respect to earlier recorder designs by providing 1) more convenient access to the optics and the disk-handling mechanisms, 2) optical system alignment control loops, 3) disk write power control loops, and 4) advanced subsystem status monitoring with software-controlled fault isolation.
© (1985) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gerald M. Claffie "High-Performance Optical Disk Jukebox", Proc. SPIE 0529, Optical Mass Data Storage I, (12 April 1985); https://doi.org/10.1117/12.946438
PROCEEDINGS
7 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

An Optical Disk Jukebox Mass Memory System
Proceedings of SPIE (November 09 1983)
Optimization of magneto-optic head
Proceedings of SPIE (July 31 1990)
Digital Disk Optics
Proceedings of SPIE (November 09 1983)
Diffractive optics for data storage
Proceedings of SPIE (May 11 1995)
Intensified CCD detector head for the VIS UV EUV spectral...
Proceedings of SPIE (November 14 1993)
Autofocus module for multilaser print heads
Proceedings of SPIE (December 07 1998)

Back to Top