JPH0736245B2 - Information selection system - Google Patents

Description

Description: TECHNICAL FIELD The present invention selects a disk related to necessary information from a large number of stored disk groups to perform recording / reproducing at high speed and to request information from many requesters. The present invention relates to an information selection system configured to support high speed.

Configuration of Conventional Example and its Problems Conventionally, as an information selection system for distributing and storing a large amount of information in a large number of discs and selecting and reproducing the disc as needed, a jukebox type is used. A conventional information selection system in which a disc changer device has been developed and used will be described with reference to FIGS. 1 and 2.
FIG. 1 is a view of a conventional jukebox type disc changer seen from above, in which 1 is a turntable, 2 is a disc,
Reference numeral 3 is a disc reproducing device, 4 is a detacher for loading the disc into the disc reproducing device 3, and 5 is a holder for holding the disc. The disc 2 is held by the rotating stage 1 while the rotating table 1 is rotating. Remove the hold. FIG. 2 is a lateral view of a conventional jukebox type disc changer device, in which 6 is an electric motor, 7 is a rotational position detector and a computer for controlling the device, and 8 is a base of the disc reproducing device 3. In response to a request from the information requester, the control computer 7 drives and controls the electric motor 6 while detecting the position of the turntable so that necessary information can be taken out, and the disc reproducing apparatus 3
The required disc is taken to the loading port of the disc, and the disc 2 is loaded into the disc reproducing device 3 by the detachable member 4 after the turntable 1 is stopped. At this time, the holder 5 is pushed by the detachable member 4 to release the holding of the disk 2. Similarly, the disk from which the information has been taken out is returned to the rotary table 1.

However, in the conventional system, when retrieving a large amount of information, the number of disks on the turntable 1 becomes enormous, and due to its weight, the time required to stop and start the turntable 1 becomes very long, and the information is taken out. There was a drawback that it took a very long time to reach.

OBJECT OF THE INVENTION It is an object of the present invention to provide an information selection system capable of realizing faster access to information requests.

According to the information selection system of the present invention, between the first rotary table on which the holders for holding the disk are radially arranged and the recording / reproducing apparatus arranged at the radial position of the first rotary table. , A second rotary table that is continuously lightweight and is equipped with a detachable member while continuing rotation is provided, and the second rotary table is electromagnetically coupled to the first rotary table. When the driving force is applied, the rotation is relatively stopped, the position is detected, the rotation is stopped at a necessary position, and the disc is loaded into the recording / reproducing device by a detachable member, or conversely, the disc is taken out from the recording / reproducing device, and the first rotary table. It is characterized in that it is configured to return to the upper retainer. According to such a configuration, the light turntable rotates to attach / detach the disc, so that disc access can be greatly shortened.

Description of Embodiments FIGS. 3 and 4 show an embodiment of the present invention. In FIGS. 3 and 4, reference numeral 1 is a first rotary table, and a plurality of holders 5 for holding the disks 2 are radially provided, and 1024 disks 2 can be attached. Reference numeral 3 denotes a disk recording / reproducing apparatus, in which 32 units are radially arranged on the outer periphery of the first rotary table 1. Reference numeral 4 denotes a detachable member for loading the disc 2 held on the first turntable 1 into the disc recording / reproducing device 3. Reference numeral 5 denotes a holder, which holds the disk on the first rotary table 1. Reference numeral 9 denotes a second turntable, on which the detachable member 4 is attached. Reference numeral 10 denotes a control computer, which controls the first rotary table 1, the disc reproducing device 3, the detachable unit 4, the second rotary table 9 and the like in response to an information request. An electric motor 6 is arranged under the floor, and drives the first rotary table 1. Reference numeral 11 denotes an angular position detection device for the first rotary base 1, which optically reads a 10-bit optical position pattern written on the back surface of the first rotary base 1 to rotate 2 ¹⁰ = 1024 types of rotations. Detect the angle. Reference numeral 12 denotes an angular position detection device for the second rotary table 9, which optically reads an optical position pattern corresponding to 10 bits written on the back surface of the second rotary table 9. Reference numeral 13 is an armature arranged under the floor and driven by a three-phase current, and forms a stepping motor together with a field magnet 14 embedded in the back surface of the second turntable 9. Further, 15 is an armature embedded in the back surface of the first rotary base 9, which is driven by a three-phase current
Together with this, it forms a stepping motor. The field 14 generates a magnetic field in a salient pole having a large number of teeth by passing a current through the coil. In this embodiment, the first rotary table 1 is constantly rotating, and the second rotary table 9 is repeatedly rotated and stopped to load and pull out the disc 2. When the first turntable 1 and the second turntable 9 rotate at the same number of revolutions, they can be removed from the holder 5. Further, when the second turntable 9 is stationary, the disc recording / reproducing apparatus 3 can be loaded / unloaded. Actually, the armature 1 is attached to the second turntable 9.
If no current is applied to 3, field 14, and armature 15, almost no force is applied. When a direct current is applied to only one phase of the armature 13 even when a current is applied to the field 14, a brake is applied to the second rotary base 9 and a direct current is applied to only one phase of the armature 15. , The second turntable 9 rotates in synchronization with the first turntable 1. Furthermore, even if the coil is shorted without applying a direct current, the brake is applied by the counter electromotive force. For these operations, the switching timing can be controlled by taking the slip into account in the calculation based on the angles detected by the control computer 10 and the position detecting devices 11 and 12. In addition, one of the 32 disc recording / reproducing devices 3 that is not used, or 2
It is possible to perform control such as selection of one of the detachable members 4 closest to the unused disk recording / reproducing device 3. When the direct access is made to flow through the armature and the rough access is completed in the vicinity of the intended angle by the timing control, the fine access can be performed by the stepping motor. It goes without saying that the second rotary table 9 does not necessarily have to be disk-shaped.

FIG. 5 shows another embodiment of the present invention. In FIG.
1 is a first rotary table, 2 is a disc, 3 is a disc recording / reproducing device, 4 is a disc holder, 5 is a disc holder, and 16 is an outer frame for preventing the disc from flying in the centrifugal direction. is there. According to this embodiment, since the rotation moment of the second turntable 9 is small, faster access can be obtained.

6 and 7 show another embodiment of the present invention.
In FIGS. 6 and 7, 3 is a disk recording / reproducing device, 10 is a control computer, and 9 is a second turntable. In addition, 2 is a disk, 4 is a disk attachment / detachment,
It is attached to the lower part of the second turntable 9. Reference numeral 3 is a disk reproducing device. Reference numeral 6 denotes an electric motor, which drives the first rotary table 1 by a belt 17. First turntable 1
And the axis of the second turntable 9 are coaxially driven. Reference numeral 11 is an angular position detecting device for the first rotary base 1, and 12 is a position detecting device for the second rotary base 9. A field 14 is connected to the shaft of the second turntable 9. An armature 15 is connected to the shaft of the first turntable 1. 13 is also an armature and is installed under the floor.

EFFECTS OF THE INVENTION As described above, according to the present invention, the rotary table on which the detachable element is placed is decelerated or accelerated to take out the medium to be selected on the first rotary table. The light turntable does not have to catch up with the rotation speed of the medium turntable that rotates at a constant speed, and the detacher can be moved to the target media device in a short time by position control such as simple phase adjustment that does not require delicate timing control. In addition, since the turntable on which the attachment / detachment, which requires time such as movement stop, is placed is light, it is possible to make the starting, positioning and stopping times extremely short.
Further, since the first rotary table having the retainer and the second rotary table having the detachable member are relatively stopped in rotation, a large amount of information data can be taken out at a very high speed.

[Brief description of drawings]

FIG. 1 is a top view of a conventional system, FIG. 2 is a side view thereof, FIG. 3 is a top view showing a first embodiment of the system of the present invention, FIG. 4 is a side view thereof, and FIG. 6 is a top view showing a second embodiment of the system of the present invention, FIG. 6 is a top view showing a third embodiment of the system of the present invention, and FIG. 7 is a side view thereof. 1 ... 1st rotary base, 2 ... disk, 3 ... recording / reproducing device, 4 ... detachable member, 5 ... holding, 9 ... second rotary base.

Claims (1)

[Claims] 1. A recording / reproducing device which is fixedly installed radially in a circumferential direction, and a plurality of holders for holding a disc-shaped recording medium to be recorded / reproduced by the recording / reproducing device. A first rotary table that is driven to rotate; and a detacher that takes out a disk-shaped recording medium from the holder and loads it into the recording / reproducing apparatus, or removes a disk-shaped recording medium from the recording / reproducing apparatus and loads it into the holder. One or more provided second rotatable bases capable of continuous rotation, and a second rotatable base is provided between the first rotatable base and the recording / reproducing device,
Means for independently controlling rotation of the first rotary base and the second rotary base, first position detecting means for detecting a rotational angular position of the first rotary base, and rotation of the second rotary base. A second position detecting means for detecting an angular position, and a means for stopping the movement of the detachable member by controlling the second rotary table to an arbitrary loading port position of the recording / reproducing apparatus by the second position detecting means. The output of the first and second position detecting means detects the positional relationship of the relative angle between the detachable member of the second rotary table and each of the holders of the first rotary table, and the controller The first under control
The rotary table of the above-mentioned continues rotating, while the second rotary table which continuously rotates is relatively rotated with respect to the first rotary table at an arbitrary timing, and then relatively stopped at a desired holder position. Control is performed so that the disc-shaped recording medium is taken out by the detachable unit, and then the detachable unit of the second rotary table is stopped at the position of the arbitrary recording / reproducing device to load the disc-shaped recording medium. An information selection system characterized by being configured so as to close.