Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1988-07-05
1991-07-23
Fuller, Benjamin R.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 771, 369178, G11B 1722
Patent
active
050349376
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a magazine-type record player with compartments that can accommodate several disk-shaped recording media and with a mechanism for removing the disk-shaped recording media from the compartments in the magazine.
Record players of this type include for example compact-disk players or videodisk players as well as computers that employ storage devices in the form of disk-shaped recording media. With known compact-disk players, a mechanism completely removes from the magazine the disk that is to be played and positions it on the disk-drive mechanism. Once it has been played, the disk is thrust back into the compartment provided for it.
One essential drawback of this type of compact-disk player is that the magazine takes up a lot of space, and this is a special problem for players installed in vehicles because the instrument panel does not have much room for the radio, the cassette recorder, and a compact-disk player.
SUMMARY OF THE INVENTION
The object of the invention is accordingly to improve a magazine-type record player to the extent that it will take up little space.
This object is attained in accordance with the invention in that a disk-shaped recording medium that is to be played is removed from the magazine only to the extent that the disk-drive mechanism can engage the bore in the medium.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates the optical scanner, the disk-drive mechanism, and the magazine of a compact-disk player in accordance with the invention and
FIG. 2 illustrates one compartment in the magazine.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows how a compact disk P is played. It is removed from a magazine M only far enough for a disk-drive mechanism A to engage the bore B in the disk. An optical scanning system O reads out the data stored in the spiral tracks on the disk.
Removing compact disk P from magazine M only partly instead of completely saves a lot of space. It also takes considerably less time to remove a disk from the magazine and thrust it back in.
FIG. 2 illustrates an especially practical embodiment of the invention with a semicircular recess K in the floor of each compartment in magazine M. The diameter of recess K is slightly longer than the outer diameter of the disks. Compact disk P is precisely centered in recess K while being played. The advantage of the recess is that each compartment in magazine M can be lowered from floor to roof because the recess allows the disk to rotate freely. The decrease in height of each compartment in turn makes the magazine as a whole lower from top to bottom, saving even more space.
The invention is in no way limited to compact-disk players but is appropriate for any equipment that reads information from a disk-shaped recording medium whether the scanner is in contact with the medium or not.
1. A record player comprising: a magazine having compartments for storing a plurality of rigid and flexible disk-shaped recording media; means for removing said disk-shaped recording media one at a time from said compartments in said magazine; disk drive means for engaging a bore in each of said recording media to play said recording media; said recording media being removable one at a time by said removing means to a minimum position necessary to expose said bore of a recording medium for engagement with said disk drive means; said compartments extending to an open side of said magazine from which said recording media are removed; each of said compartments having a floor with a semi-circular recess at said open side of said magazine; said recess therein having a diameter substantially longer than an outer diameter of a respective disk-shaped recording medium so that said recording medium can rotate freely while being player; each of said compartments having a storage recess above said semi-circular recess for fully storing said recording medium; said removing means lowering the medium to be played from said storage recess into said semi-circular recess for playing the recording medi
REFERENCES:
patent: 4510591 (1985-04-01), Schatteman
patent: 4644515 (1987-02-01), Allebest et al.
patent: 4670866 (1987-06-01), Hasegawa et al.
IBM Technical Disclosure Bulletin, vol. 20, No. 12, "Orient and Interlock Sensor Arrangement for Diskette Picker Mechanism", May 1978 by C. A. Larson, D. L. Lochner and G. C. Thomas, pp. 5281-5286.
Caspers Johannes
Laufer Helmut
Deutsche Thomson-Brandt GmbH
Fogiel Max
Fuller Benjamin R.
Gibson R.
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