Finedrive 400 updating procedures
The disc, when rotated ,by the drive mechanism, permits the read-write head to access all portions of the disc media.
To conserve space in optical storage systems, it is desirable to minimize the size required by the apparatus that loads a disc onto and unloads the disc from a spindle.
The corresponding disc drive includes a mechanism for opening the door or shutter on the cartridge as the cartridge is pushed into the system.
Such a mechanism may comprise a door link that makes contact with a locking tab, thereby unlocking the shutter.
A method for moving a carriage assembly from an initial position to a target position relative to a storage medium having a center and a circumference, and rotating relative to said carriage assembly at a circumferential velocity about said center, said method comprising the steps of:determining a circumferential distance between said intermediate position of said carriage assembly and said target position of said carriage assembly taken parallel to said circumference of said storage medium;calculating a velocity trajectory relative to said radial distance, said circumferential distance, and said initial circumferential velocity so that when said carriage assembly is moved from said intermediate position to said target position with said velocity trajectory, said carriage assembly will arrive radially and circumferentially at said target position at substantially the same time; andapplying a force to said storage medium to change from said initial circumferential velocity to said target circumferential velocity wherein said velocity trajectory is further relative to said target circumferential velocity and said carriage assembly will arrive radially and circumferentially at said target position at substantially the same time when moved from said intermediate position to said target position substantially with said velocity trajectory, and when said initial circumferential velocity of said storage medium is changed to said target circumferential velocity. The turntable may comprise a spindle having a magnet upon which a disc hub is mounted for use.
A conventional disc loading and unloading system that uses disc cartridges is typically capable of automatically transporting a disc cartridge from a receiving port onto the spindle.
As the cartridge is inserted further into the drive, the shutter is opened to partially expose the information recording medium contained therein.
This permits a disc hub to be loaded onto a spindle of a motor or other drive mechanism, and permits entry of a read-write head and a bias magnetic into the protective cartridge.
Cartridge Loading To protect the disc when the cartridge is external from the drive, the disc cartridge typically includes at least one door or shutter that is normally closed.
The cartridge shutter may have one or more locking tabs associated with it.These disc cartridges are well known in the computer arts.