Dynamic information storage or retrieval – Storage medium structure – Adjuncts or adapters
Patent
1995-02-08
1996-12-03
Wolff, John H.
Dynamic information storage or retrieval
Storage medium structure
Adjuncts or adapters
360133, G11B 2303
Patent
active
055815405
ABSTRACT:
A write protection system for machine-readable data storage disks, such as optical disks, of a single or multiple disk cartridge, where write protection of any disk can be individually enabled or disabled while the cartridge is inserted into a disk drive. Separate trays support each of the disks, all trays being housed by a cartridge. When the cartridge is inserted into the disk drive, only a face of the cartridge is exposed. Each tray includes a write protection mechanism positioned near the cartridge face when that tray is housed by the cartridge. Each mechanism provides a user-selectable, machine-readable indication of the protection status of its associated disk. An exemplary mechanism includes a resilient finger, deformably pivotable from a released position to an activated position when a deflection pin is pressed against the finger through an activation hole in the cartridge face. A detente is resiliently urged toward the finger, at an intersecting angle thereto. The detente includes a ramp with a catch facing the finger. As the finger moves from its released position to its activated position, the ramp slidably contacts the finger's tip. The catch maintains the finger in its activated position after the tip slides past the catch. Manually extending a deflecting pin against the detente through a releasing hole in the face pivots the detente away from the finger, causing the tip and the catch to move apart, whereupon the finger's resiliency snaps it back into its released position.
REFERENCES:
patent: 3662360 (1972-05-01), Lambert
patent: 4460930 (1984-07-01), Takahashi
patent: 4536812 (1985-08-01), Oishi et al.
patent: 4564871 (1986-01-01), Cybulski
patent: 4617655 (1989-10-01), Aldenhoven
patent: 4800554 (1989-01-01), Yamasaki et al.
patent: 4819114 (1989-04-01), Bernitt et al.
patent: 4908817 (1990-03-01), Sandell et al.
patent: 5041923 (1991-08-01), Iwata et al.
patent: 5159585 (1992-10-01), Ikedo et al.
patent: 5231552 (1993-07-01), Schneider et al.
patent: 5325256 (1994-06-01), Miyazaki et al.
patent: 5371644 (1994-12-01), Hoge et al.
International Business Machines - Corporation
Ometz David L.
Wolff John H.
LandOfFree
Single disk write protection system for multiple-disk cartridge does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Single disk write protection system for multiple-disk cartridge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single disk write protection system for multiple-disk cartridge will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-791512