JPH03250448A - Information storage device - Google Patents

Abstract

PURPOSE:To make acceleration or a speed in a horizontal direction small and to make reaction small by making the downward driving start of a carrying machine precede and executing the driving start in the horizontal direction while the downward driving is executed. CONSTITUTION:A maximum value is fixed so as to execute an operation as quickly as possible within a range that many adverse effects are not given caused by vibration by the movement of the carrying machine 6. According to it, the machine 6 is driven. When, DELTAxnot equal to 0, time Tx and Ty required for moving the machine 6 in a left-and-right and an up-and-down direction are obtained. Then, it is judged whether the machine 6 is moved downward or not, that means, DELTAy<0 or not. When DELTAy<0, the Tx and the Ty are compared and it is judged that there is time for moving it in the left-and- right direction when Tx<Ty. By previously lowering the machine 6 to some extent and driving it in the left-and-right direction thereafter, the left and right movement of the machine 6 is executed at a position as low as possible. Due to that, the driving of a motor for driving up and down 10 is started and continuously the driving of a motor for driving left and right 17 is started at timing that it is finished simultaneously with the motor 10, that means, by delaying time as much as (Ty - Tx). Even in such a way, the operation time as a whole is not prolonged.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information storage device for reading and writing information on a recording medium such as an optical disk cartridge.

[Conventional technology]

FIG. 5 is a perspective view of a conventional information storage device, showing a schematic configuration of a large-capacity optical disk storage device.

Figure 6 shows the conveyor (described later) of the information storage device in Figure 5.
It is a perspective view seen from the opposite side to the figure. In these figures, (1) is a frame assembled into a rectangular parallelepiped, (2) is a bottom plate attached to the bottom of the frame (1), and (3) is a former disk device that is a recording/reproducing device. is placed above. (4)
is a storage shelf provided on the optical disk device (3), which is divided horizontally into two rows, and each row is vertically divided into a number of spaces capable of storing optical disk cartridges, which will be described below. (5) is an optical disk cartridge (20, referred to as an optical disk) which is a recording medium.

(61 is a transport machine that transports the optical disc (5) between the storage shelf (4) and the optical disc storage +31, and (7) is the bottom plate (
2) The pedestal (8) is the two first guide rails vertically provided on the pedestal (7), (9)
is an elevating base that is provided in engagement with the first kite rail (8), and is movable in the vertical direction while being guided by the first guide rail (8). 110) is controlled by a control unit (not shown), and a vertical drive motor that drives the lifting base (91 in the vertical direction) via a first timing peltrol (110), qz is parallel to the first guide rail (8). It is a scale with a slit installed in the vertical position of the lifting base (9), and the vertical position of the lifting base (9) is detected by signals emitted from a pair of photoelectric sensors (not shown) installed on both sides of the scale and fixed to the lifting base (9). It is now possible to do so.

(15) is a second guide rail provided horizontally on the elevating base (9), and port 6) is a cartridge holding part that holds the optical disc (5), which engages with the second kite rail 5) and is connected to it. It is guided and can move horizontally. In the horizontal direction, from the lifting base (9) to the storage shelf (4)
). A left-right drive motor, U!, which is controlled by the a'n it abrasive part and drives the second timing belt 08 (via the cartridge holding part α6) in the left-right direction. ! is a sensor for detecting the position of the cartridge holding portion opening e in the left-right direction. Above, (7
) to (19) constitute a conveyor (6).

Next, the operation will be explained. Stores the optical disc (5)
In general, in order to transport the optical disc device (3) from the IT+4+ to the optical disk device (3), it is necessary to move the transport device (61) both vertically and horizontally. The maximum value is determined so that it can operate as quickly as possible without having a major negative impact on the overall system, and the transport machine is driven according to this value. In order to move the conveyor (6), the vertical and horizontal driving motors uO) and 171 start driving the conveying machine (6) in the vertical and horizontal directions at the same time.

The lifting base (9) is moved up and down w1 by the vertical drive motor 0)K, and along with this, the cartridge holding part u
The mark also moves up and down. The height position of the elevating base (9) is detected by the scale uz and the photoelectric sensor, and when the desired height position is reached, the vertical drive motor GO) stops. On the other hand, the cartridge holding part t161 is driven in the left-right direction by the left-right drive motor O'7), its position is detected by the sensor (19), and when the desired left-right position is reached, the left-right drive motor (17i) is stopped. .

When both the upper and left and right drive motors (10) and a'7) stop, the cartridge holding section pulls out the target optical disc (5) from the storage shelf (4) and grips it. Next, while holding the optical disc (5) on the cartridge holding part side, insert the optical disc device (3) in the same manner as above.
1 and insert the optical disc (5) into the optical disc device (3). Information is recorded or reproduced here, and when it is finished, the optical disk (5) is transported from the optical disk device (3) to the storage WA+41 in the same manner.

In the above, the upper F and left and right drive motors (101, 0
The operation of 71 is controlled by a control section, and operates according to a program given to it.

Next, the locus of movement of the conveyor (6) will be explained. The coordinates are the X axis in the horizontal direction and the y axis in the vertical direction.
Take the axis and assume that the upward direction is positive. Assuming that the carrier (6) is moved from point A to point B, the displacements in the x and y directions at this time are assumed to be ΔX and Δy. The time required to move the distances ΔX and Δy according to the predetermined maximum acceleration and speed in the horizontal and vertical directions is Tx.

Ty, and various cases are classified as shown in Table 1.

Figure 7 of Table 1 is a trajectory diagram of the transport machine (6), and voice C is the point at which either the vertical or horizontal drive motor tlO) or (17) stops first.The transport machine (6)
is driven by Iη from point A to point C, and from this point the motor for both parts (1o),
It is driven by only one of the mouths T until it reaches point B and stops. However, when Tx=Ty, it does not exist at point C,
Directly reach point B. In reality, there is an acceleration/deceleration section, so it becomes a curve near point C, but it is shown as a broken line for the sake of time.

As can be seen from FIG. 7, in cases I and (2), the movement in the left and right direction is performed at a relatively high position.

[Problem to be solved by the invention 1 Since the conventional information storage device is configured and operates as described above, when the cartridge holder is driven in the horizontal direction at a high position, the accompanying rapid movement in the horizontal direction Vibrations occur due to reaction forces caused by large movements of devotion or large accelerations (including decelerations), and especially if the floor surface on which the device is installed has poor flatness, such vibrations may temporarily stop the operation of the information storage device. In many cases, it becomes stable, and if the moving acceleration and speed of the cartridge holder are reduced in order to avoid such vibrations, there are problems such as the operation time becomes longer.

This invention was made to solve the above-mentioned problems, without increasing the overall operating time.
An object of the present invention is to obtain an information storage device that can reduce the frequency of occurrence of large vibrations.

[Means for Solving the Problems] An information storage device according to the present invention is such that the drive of the conveyor in the G direction is started in advance, and the drive in the horizontal direction is started while the transport machine is being driven in the downward direction. In addition, the drive in the horizontal direction is started in advance, and the upward drive is started while the drive is in the horizontal direction.Furthermore, the drive in the horizontal direction is started within a range that is not longer than the required travel time in the vertical direction. The acceleration or velocity is reduced below a predetermined maximum value.

[Effect]

The information storage device according to the present invention utilizes the time required for vertical and horizontal movement of the conveyor, whichever has more time, and starts driving in both directions at time intervals, thereby allowing the conveyor to move to a lower position. Since horizontal drive is performed, and the acceleration or velocity in the horizontal direction is reduced, the reaction force is also reduced.

[Embodiment of the Invention] FIG. 1 is a flowchart showing the operation of an information storage device according to an embodiment of the present invention. The optical disk (5) is stored in the storage unit (not shown) by the conveyor (6) which is placed on the secondary side (not shown).
4) and the original disk device (3). X t y*△X, △y, Tx.

Ty cases ■ to ■ and the left and right sides are considered in the same way as the conventional example.

The first step is to determine how far the transport device (6) or the optical disk (5) needs to be moved in order to transport it to the target position, that is, the displacements ΔX and Δy. Next, it is checked whether ΔX=O in the step mode, and if it is 0, since it is a step mode, only the vertical drive motor (10) is driven. In addition,
The acceleration and speed of each drive by the vertical and horizontal drive motors (101, Q7) are the same as before.
The maximum value is determined so that the conveyor (6) can operate as quickly as possible without causing a large negative influence due to the vibration caused by the movement of the conveyor (6).
Step □□□ determines the time Tx and Ty required for moving in the horizontal and vertical directions, and determines whether the step moves downward, that is, △y<0. If △y<O, compare Tx and Ty in step ■ and find that Tx<Ty
If so, there will be time to move left and right,
By lowering the transporter (611) to a certain extent first, and then driving it in the left and right directions, the left and right movement of the transporter (61) is made as low as possible.Therefore, in the step position, the vertical drive motor 00 is first moved. Then, the left and right drive motor Uη is started to be driven at the same time as the vertical drive motor q■ in the step area, that is, with a delay of (Ty-Tx).

Even if this is done, the overall operating time will not be prolonged. On the other hand, if Tx≧Ty due to the step, there is not enough time for left and right movement, so if the drive of the left and right drive motor (17) is delayed, the entire operation time will become longer.

Therefore, in the step group, driving of both motors uO) and one mouth η is started at the same time. Also, if △y≧0 in step 1, that is, it is separated from upward movement, then Tx
Compare Tx) and Ty, and if it is Ty, there is time to move up and down, so by first driving the conveyor (6) in the left and right direction to some extent and then raising it, it is possible to move the conveyor (6) in a narrow position. Reduce the movement of the transport machine (6) in the left and right direction.

Therefore, in step 1311, the left and right drive motors start to be driven, and then in step 1311, the left and right drive motors [171] are simultaneously driven at the same time as step 1311. In other words, the time is delayed by (Tx-Ty). Then, the vertical drive motor 00) starts driving. Also, since the step, Tx≦Ty
In this case, since there is not enough time for vertical movement, both motors QOI and t17) are started to be driven at the same time in step (9)) so as not to increase the overall operation time.

Step 13 if you go through any of the above routes
In step 3), it is checked whether both motors tlO) and (17) have stopped, and if they have stopped, proceed to the next operation.

Figure 2 is a trajectory diagram when the conveyor is driven as described above, and (B) is a solid line. , that is, case ① and case ~ are shown, and the broken line shows the conventional case. The conveyor (61 moves from point A to point B. C is the point where the drive motor on the side that starts driving after a delay starts driving. In reality, it may become a curve near point C, or it may be curved due to an intervening wheel. Similarly to the conventional example, this is illustrated by a polygonal line.Furthermore, in the case where the step is via ω and the case where the step is via ω, that is, in cases ① and III, the results are the same as in FIG. 7 (Bl, (0), respectively.

Furthermore, in the above embodiment, case 1. In IV, the image drive motor rotor mark and U force were made to stop driving at the same time, but
For example, the drive start time may be delayed by half the difference between Tx and Ty.

FIG. 3 is a flowchart showing the operation of the information storage device according to another embodiment of the present invention.
ΔX and Δy are obtained in step 12, and it is checked whether ΔX=0 or not. If it is 0, only the upper motor (uO) is driven at the old step. Note that the maximum acceleration and velocity of the upper (2), left and right drive motors (UO+), and (a) force are determined respectively as in the case of Fig. 1, and the vertical drive motor (10) passes through other routes described later In both cases, the vehicle is operated according to the predetermined maximum acceleration and speed.

△X￥0 is a step circle, and calculates the time Tx and Ty for movement from △X, △y and the above-mentioned predetermined maximum acceleration and speed, and compares the two. If Tx<Ty, it means that there is some margin in Tx, and the actual acceleration and speed in the left and right directions are reduced from the maximum acceleration and speed mentioned above in Step Co., Ltd. to operate the vehicle. At that time, the required travel time in the left and right direction is Tx
d so that Txd=TyK. Both motors t1.0+ and 071 start driving at the same time. On the other hand, if it is determined that Tx≧Ty in step ), the motors 001 and (171) for driving both parts start to be driven at the same time, and
Operate according to the above specified maximum 7J [+ speed, speed.

If any of the above routes is followed, a check is made at each step to see if both motors t101 and 071 have stopped, and if they have stopped, the process moves to the next operation.

Fig. 4 is a locus diagram when the conveyor is driven as shown in the flowchart of Fig. 3, and the solid lines fAl and
and case ■ are shown, and the dashed line shows the conventional case. In the case of step 146), that is, case opening and ■ are the same as in FIG. 7 (Bl and (Di), respectively).

In addition, in the example shown in Fig. 3, the acceleration and speed in the left and right directions were reduced in cases ■ and ■, or in the conventional case, it was reduced only in case ■ when moving in the left and right direction at a high position, and in case ■, it was reduced as before. You may also do so. Further, in the above embodiment, both the acceleration and the velocity are reduced below the predetermined maximum values, but only one of them, which has a greater influence on vibration, may be reduced.

Further, in the above embodiment, the same effect can be obtained even when the optical disk (5) is used as a recording medium cartridge, a magnetic disk cartridge, a floppy disk, etc. as a recording medium, and these are transported.

[Effects of the Invention] As described above, according to the present invention, the acceleration or speed in the upward and horizontal directions of the conveyor is reduced to a predetermined maximum value. It is possible to drive in the left and right directions at a low position by using the available time out of the time required to move in the direction, and the reaction force can be reduced by reducing the acceleration or speed in the left and right directions. . This has the effect of reducing the frequency of large vibrations without increasing the overall operating time.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing the operation of an information storage device according to an embodiment of the present invention, FIG. 2 is a trajectory diagram of a conveyor when operating according to the flowchart of FIG. 1, and FIG. 3 is an implementation of the pond of this invention. A flowchart showing the operation of the information storage device according to an example, FIG. 4 is a trajectory diagram of the conveyor when operating according to the flowchart of FIG. 3, FIG. FIG. 7 is a perspective view of the conveyance machine of the information storage device t shown in the figure, and FIG. 7 is a trajectory diagram of the conveyance machine of FIG. In the figure, (31 is an optical disk device, (4) is a storage shelf, (5) is an optical disk, (6) is a conveyor, (]0) is a vertical drive motor, and 071 is a left and right drive motor. , the same reference numerals in each figure indicate the same or corresponding parts.

Claims (3)

[Claims] (1) A storage shelf that stores a recording medium, a recording/reproducing device that reads and writes information on the recording medium, and a device that drives the storage shelf and the recording/reproducing device in the vertical and horizontal directions to connect the recording medium to the recording/reproducing device. What is claimed is: 1. An information storage device comprising a conveying machine for conveying an information storage device, characterized in that said conveying machine starts to be driven in a horizontal direction in a downward driving state. (2) A storage shelf that stores recording media, a recording/playback device that reads and writes information on the recording medium, and a storage shelf that is driven vertically and horizontally to store the storage medium between the storage shelf and the recording/playback device. What is claimed is: 1. An information storage device comprising a conveying machine for conveyance, characterized in that the upward driving of the conveying machine is started while the conveying machine is being driven in a horizontal direction. (3) A storage shelf that stores a recording medium, a recording/reproducing device that reads and writes information on the recording medium, and a storage shelf that is driven vertically and horizontally to store the recording medium between the storage shelf and the recording/reproducing device. In a device equipped with a conveyor, the acceleration or speed in the horizontal direction is lower than a predetermined maximum value within a range that does not exceed the required horizontal or vertical movement time of the conveyor. An information storage device characterized in that the conveyance machine is driven with a reduced speed.