Device for playing, recording, and issuing discs

Details Device for playing, recording, and issuing discs Device for playing, recording, and issuing discs

1996-11-25

1998-11-24

Evans, Jefferson

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

360 9806, G11B 1722, G11B 1560

Patent

active

058417443

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND

1. Field of the Invention
The invention relates to a playing and/or recording and/or issuing device for discs configured as information carriers, particularly Cds.
2. Related Art
EP 0 138 005 B1 discloses a disc-changing apparatus in which a vertically-traveling disc-extracting apparatus is disposed between two vertical disc magazines that store disc covers with discs; this disc-extracting apparatus supports a disc cover gripper, which travels horizontally on the apparatus. The disc cover gripper is provided with two gripping devices, of which one is alternatingly in its ready position in the left or right disc magazine, while the other gripping device holds an extracted disc cover in the center position, in which the disc is located above the turntable of the playback device. Accordingly, only one gripping device of the disc cover gripper can assume a ready position for extracting a disc cover from the associated disc magazine, that is, if a disc cover is to be extracted from the other disc magazine, the disc cover gripper must first be moved in the direction of this disc magazine in order to bring the other gripping device into a ready position for extracting a disc cover from its associated disc magazine, which represents an additional path of travel for the disc cover gripper that increases the transport time for conveying the disc cover containing the desired disc from the disc magazine to the turntable of the playback unit.
EP 0 280 263 A2 discloses a disc playback device in which the discs are arranged in two stacks and can be played in two playback stations. The individual discs can be played from two sides. They are not returned to the same stack after being played. This device includes an endless conveyor belt as an extraction device. With this conveyor belt, a disc can be extracted from one of the two magazines without a delay period. In this device, the position of the extraction device cannot be used to check the disc position. Consequently, unacceptable subtle disturbances in operations are anticipated to occur with the slightest irregularity in disc transport, for example the release of discs from the playback device or jarring of the system.
EP 0 439 483 B1 discloses a disc-playback device having two oppositely-located disc magazines and a transport device that can move in the direction of the disc magazine stack to convey a disc holder and a disc back and forth between the disc magazines and a playback unit; this device also has two extraction devices that can be controlled independently of one another and can travel horizontally on the transport device, and each extraction device has a gripper arm that can be extended or retracted. The independently-traveling extraction devices are respectively located in a ready position for extracting a disc holder for a disc from the associated disc magazine, or one extraction device is moved into a central position, in which it fixes the disc and disc holder that have been extracted from the disc magazine concentrically to the turntable, while the other extraction device remains in its ready position for the other disc magazine. The result of this design is a relatively short conveying path for an individual disc or associated disc holder; however, when a disc holder is transferred from one disc magazine to the other, the extraction device that has brought the disc holder into the central position must be returned to its ready position, and the other extraction device must be brought into the central position before it can convey the disc holder into the other magazine. This results in a corresponding loss of time.
Finally, WO-A-93/11 535 discloses a playing and/or recording device for discs configured as information carriers, the device encompassing two disc magazines for disc holders, a transport device having two horizontally-traveling extraction devices, a running gear and a disc loading and issuing slide. The extraction devices alternatingly in the ready position and the transport device position, respectively, can be brought into a p

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patent: 5228016 (1993-07-01), Menke
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patent: 5414679 (1995-05-01), Menke
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patent: 5532931 (1996-07-01), Erickson, Jr. et al.
patent: 5539712 (1996-07-01), Menke et al.
patent: 5546366 (1996-08-01), Dang
patent: 5640510 (1997-06-01), Hanaoka et al.

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