JPS6150252A - Information selection system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention [9] selects a disc related to necessary information from a large number of stored discs to speed up recording and reproduction and satisfy information requests from a large number of requesters. The present invention relates to an information selection system configured to be able to respond quickly to various types of information.

Conventional structure and its problems Traditionally, a jukebox-type information selection system has been used to record and store large amounts of information distributed over a large number of discs, and select and play discs as needed. A conventional information selection system in which a disc changer device has been developed and used will be explained with reference to Figures 1 and 2. Figure 1 shows a conventional jukebox type disc changer viewed from above. 2 is a rotary table, 2 is a disk, 3 is a disk playback device, 4 is an attachment/detachment element for loading the disk into the disk playback device 3, and 5 is a holder for holding the disk. 1, and the holding is released when inserting or removing a disk.Figure 2 shows a conventional jukebox type disk changer device viewed from the side, with 6 indicating an electric motor, 6 indicating a rotational position detector and a computer for controlling the device, Reference numeral 8 indicates 30 disc playback devices.In response to a request from an information requester, the control computer 7 detects the position of the turntable so that the necessary information can be retrieved.
``''Reproducing device 3 installation *DK required''' is carried, and after the turntable 1 is stopped, the disc 2 is loaded into the disc reproducing device 3 using the attachment/detachment member 4. At this time, the retainer 5 is attached to the detachable element 4.
The disc 2 will be released from its hold when pressed. Similarly, the disk from which the information has been extracted is removed onto the rotary table 1.

However, in conventional systems, when retrieving a large amount of information, the number of disks on the rotary table 1 is enormous, and due to their weight, the time required to stop and start the rotary table 1 becomes very long, and the information is retrieved. The disadvantage is that it takes a very long time to reach the point.

OBJECTS OF THE INVENTION An object of the present invention is to provide an information selection system that can realize faster access to information requests.

Composition of the Invention The information selection system of the present invention is provided between a first rotary table in which retainers for holding discs are arranged radially, and a fat playback device disposed at a radial position of the first rotary table. , while continuing to rotate, a second rotary table that is lightweight and equipped with a detachable element is provided, and the second rotary table can provide a xi-like coupling driving force to the first rotary table. By this, the rotation is relatively stopped, the position is detected, the disc is stopped at the required position, and the disc is loaded into the recording/reproducing device using the detachable member, or conversely, the disc is taken out from the recording/reproducing device and transferred to the holder on the first rotary table. This feature is characterized in that it is configured to return the information. According to this configuration, since the light rotary table rotates to attach and detach the disk, it is possible to greatly shorten disk access.

Description of examples 3 and 4 show one embodiment of the present invention.

In FIGS. 3 and 4, reference numeral 1 denotes a first rotary table, and a plurality of retainers 5 for holding disks 2 are provided radially, and 1024 disks 2 can be attached. Reference numeral 3 denotes disk recording and reproducing devices, and 32 disk recording and reproducing devices are arranged radially around the outer periphery of the first rotary table 1. Reference numeral 4 denotes a detachable member which loads the disk 2 held on the first rotary table 1 into the disk recording/reproducing device 3. 5 is a retainer;
A disk is held on a first rotary table. 9 is the second
The rotating table has a detachable member 4 attached thereon. Reference numeral 10 denotes a control computer which, in response to an information request, controls the first turntable 1, the disc playback device 3, the detachable unit 4,
Controls the second rotary table 9 and the like. Reference numeral 6 denotes an electric motor placed under the floor, which drives the first rotary table 1. Reference numeral 11 denotes an angular position detecting device for the first rotary table 1, which optically reads an optical position pattern corresponding to 10 bits written on the back side of the first rotary table 1. =1024 kinds of rotation angles are detected. Reference numeral 12 denotes an angular position detecting 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. 13
is an armature placed under the floor and driven by electric current, and together with the field 14 embedded in the back surface of the second rotating table 9, forms a stepping motor. Further, 15 is an armature embedded in the back surface of the first rotary table 9,
It is driven by three-phase currents and together with the field 14 forms a stepping motor. The field 14 generates a magnetic field at 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 always rotating, and the second rotary table 9 repeatedly rotates and stops to rotate the disk 2.
loading and unloading. First turntable 1 and second turntable
When the rotary table 9 rotates at the same rotation speed, it can be removed from the retainer 6. Further, when the second turntable 9 is stationary, it is possible to load and unload the disk into the disk recording/reproducing device 3. In reality, the second rotating table 9 includes an armature 13, a field 14,
If no current is applied to any of the armatures 15, no force will be applied at all. Furthermore, even if current is passed through the field 14, if direct current is passed only through one phase of the armature 13, the second rotary table 9
When the brake is applied, and when direct current is applied to only one phase of the armature 15, the second rotating table 9 is activated in synchronization with the first rotating table 1.
It spins. Furthermore, even if the coil is short-circuited without flowing direct current, the brake will be applied due to the counter-electromotive force.

In these operations, the switching timing is controlled by taking into account the slippage from the angle detected by the control computer 10 and the position detection device 11.12. -1
'1ilF! ! ! It is possible to perform control such as selection of the one that is not in use among the disk storage devices 3, or the one that is closest to the disk recording/reproducing device 3 that is not in use among the two detachable devices 4. After coarse access is completed near the target angle by timing control by flowing direct current through the armature, fine access can be performed using a stepping motor. It goes without saying that the second rotary table 911''i does not necessarily have to be disk-shaped.

FIG. 5 shows another embodiment of the invention. In Figure 5,
1 is a first rotary table, 2 is a disk, 3 is a disk recording/reproducing device, 4 is a disk attachment/detachment element, 6 is a disk holder, and 16 is an outer frame that prevents the disk from flying away in the centrifugal direction. be. According to this embodiment, since the rotation moment of the second rotary table 90 is small, faster access can be obtained.

6 and 7 show yet another embodiment of the invention.

In FIGS. 6 and 7, 3 is a disk recording/reproducing device, 10 is a control computer, and 9 is a second rotary table. Also, 2 is a disk, 4 is a disk attachment/detachment element,
It is attached to the lower part of the second rotary table 9. 3 is a disc playback device. Reference numeral 6 denotes an electric motor, which drives the first rotary table 1 with a belt 17. The shaft of the first rotary table 1 and the shaft of the second rotary table 9 are coaxially driven. 1
1 is an angular position detection device for the first rotary table 1, and 12 is a position detection device for the second rotary table 9. Reference numeral 14 denotes a magnetic field, which is coupled to the shaft of the second rotary table 9. Reference numeral 16 denotes an armature, which is connected to the shaft of the first rotary table 1.

13 is also an armature and is installed one floor below.

Effects of the Invention According to the present invention, since the first rotary table having a retainer and the second rotary table having a detachable member are relatively stopped from rotating, a large amount of information data can be retrieved at a very high speed. .

[Brief explanation of the drawing]

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. 5 is a side view thereof. FIG. 6 is a top view showing a second embodiment of the stem of the present invention, FIG. 6 is a top view showing a third embodiment of the seven stems of the present invention, and FIG. 7 is a side view thereof. 1...First turntable, 2...Disk, 3...Recording/reproducing device, 4...Detachable unit, 6
... River retainer, 9... Second turntable. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] One or more recording and reproducing devices installed radially in the circumferential direction, and a first holder that is rotatably driven by an electric motor and has a number of retainers that hold disc-shaped recording media to be recorded and reproduced by the recording and reproducing devices. A second rotary table having one or more detachable elements for removing a disc-shaped recording medium from the holder and loading it into the recording/reproducing device, or taking out the disc-shaped recording medium from the recording/reproducing device and loading it into the holder. a rotary table, a second rotary table is provided between the first rotary table and the recording/reproducing device, and the first rotary table and the second rotary table each freely rotate independently. and an armature or a field for each of them to provide an electrodynamic coupling relationship, and the second rotary table includes means for detecting the angular positional relationship with each of the recording and reproducing devices, and the first rotary table. means for detecting a relative angular positional relationship with each of the retainers, and means for moving and stopping the detachable member at a loading port position of an arbitrary recording/reproducing device, and under the control of a control device, the first While the rotary table continues to rotate, the second rotary table rotates relative to the first rotary table or stops relatively to the first rotary table, and the detachable member is used to operate a recording/reproducing device for any disc-shaped recording medium or An information selection system characterized by being configured to load a retainer.