JPH05314620A - Automatic exchanging device for data recording medium - Google Patents

Abstract

PURPOSE:To eliminate the necessity of excess operation at the time of a normal initialization operation by executing a rechecking operation only when the information of a battery backup memory storing the control information of a stored medium and a real condition of a storing shelf are recognized by seeing the opening or the closing of the outside door of the device at a data recording medium automatic exchanging device. CONSTITUTION:This device is provided with an outside door opening/closing detecting mechanism 11 for machanically storing the opening/closing of a device outside door 5 and the condition of this mechanism 11 is detected by a shelf position detecting sensor 6. Also, a microswitch is attached to the outside door pening/closing detecting mechanism 11, the opening/closing of the outside door 5 is detected by a lutch circuit fed from a backup power source and held electrically. Thus, since the stored medium is managed without the medium existance sensor of the medium storing shelf, the stored medium management is operated at a reasonable cost and a reliability is improved by reducing a sensor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage medium management function for an optical disk library device, a magnetic tape library device and the like.

[0002]

2. Description of the Related Art In a conventional optical disk library device, it is necessary to compare and confirm the storage medium management information and the state of the storage rack every time in order to confirm the presence or absence of movement of the storage medium due to human intervention in the initialization process performed when the power is turned on. For this reason, the sensor for detecting the presence or absence of the medium in the storage shelf is provided in the transport mechanism section (movable part), which increases the cost. Alternatively, the storage mechanism can be pulled out by the transport mechanism one by one without the sensor. The presence or absence of the medium was detected to lengthen the initialization time.

[0003]

SUMMARY OF THE INVENTION According to the present invention, there is a possibility that human intervention was performed on the medium storage shelf in order to eliminate the mounting of the sensor on the movable part and shorten the initialization time. It has a mechanism to detect that the door has been opened and closed, and only when the door is opened and closed, the media is removed from the storage shelf by the transport mechanism and the presence or absence of the medium is reconfirmed as in the conventional technology. The purpose is to prevent uptime and shorten the normal initialization time.

[0004]

The automatic data recording medium changing device of the present invention is provided with a mechanism for detecting that the outer door of the device is opened or closed.

[0005]

The device outer door open / close detection mechanism mechanically releases the latch when the outer door of the device is opened, and remains latched even if the outer door is closed again. The sensor for other functions is used to recognize that human intervention has occurred, and the operation of reconfirming the storage medium management information and the state of the storage shelf is performed.

Further, the outer door open / close detection sensor can be used as an interlock sensor for emergency stop when the outer door is opened during the operation of the apparatus.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the data recording medium management system of the present invention will be described below as an example of an optical disk library apparatus with reference to the drawings.

As shown in FIG. 1, the optical disk library apparatus includes a medium storage 3, an optical disk cartridge 10, an optical disk drive 4 for recording and reading data to and from the optical disk cartridge 10, a medium storage 3, and an optical disk drive 4. The medium transport unit 2 transports the optical disc cartridge 10 between them.

The positioning of the medium transport unit 2 is performed by the medium transport unit 2
This is performed by detecting the flag position attached to the shelf and the insertion port of the optical disk cartridge 10 of the optical disk drive 4 by the shelf position detection sensor 6 attached to.

Further, the loading / unloading of the optical disk cartridge 10 into / from the optical disk library apparatus 1 is usually performed at the inlet 12 part. However, the optical disk cartridge 10 can be opened by opening the outer door 5 for maintenance and inspection.
Can be inserted and removed.

The optical disk library apparatus 1 of the present invention is
The storage state of the optical disk cartridge 10 loaded from the inlet 12 in the normal operation is stored in the memory, and the information in the memory is continuously stored by the backup power source or the like even when the power of the apparatus is turned off. Therefore,
When the power is normally turned on, the optical disk cartridge 10 stored by the information in the memory is managed. However, the optical disk cartridge 10 is opened manually by opening the outer door 5.
When the storage state of the optical disk cartridge 10 is changed, the actual storage state of the optical disk cartridge 10 and the information in the memory are different,
It becomes unmanageable.

According to the present invention, when the outer door 5 is opened and closed even when the power supply to the apparatus is turned off, the state of the outer door open / close detection mechanism 11 changes, and this change is reflected in the rack position during the mechanical system initialization processing after the power supply to the apparatus is turned on. Detected by the detection sensor, in this case, after the initialization operation is completed, the medium transport unit 2 pulls out the optical disc cartridge 10 on each shelf of the medium storage 3 to detect the presence or absence of the optical disc cartridge 10, and to detect the information in the memory. If they are compared and different from each other, a warning is displayed and the data in the memory is reconstructed according to an instruction from an operator or the like.

Next, the detailed operation of the outer door open / close detection mechanism 11 will be described with reference to FIGS.

FIG. 2 and FIG. 3 are views of the above apparatus viewed from above.

FIG. 2a shows a normal operation state, in which the outer door open / close detection mechanism 11 is pushed by the outer door 5 and is positioned in the state shown in the figure, so that it is not detected by the shelf position detection sensor 6.

FIG. 2b shows a state in which the outer door is opened, and the outer door detecting mechanism 11 is rotated clockwise when the portion pushed by the outer door 5 is released and pulled by the spring 14.
It moves to a position where the shelf position detection sensor 6 can detect.

FIG. 2c shows a state in which the outer door is closed from the state of FIG. 2b. Even in this state, the state of the outer door open / close detection mechanism 11 is maintained and the outer door is opened / closed by the shelf position detection sensor 6. Can be detected.

In FIG. 3, after detecting the shelf position detecting mechanism 11,
It is the schematic of the system which returns the shelf position detection mechanism 11 to the state of FIG. 2a.

From the state shown in FIG. 2c, the optical disc cartridge is pushed toward the storage shelf by the medium conveying unit 2, and a part of the outer door open / close detection mechanism 11 is pushed by a part of the optical disc cartridge (FIG. 3a) to the state shown in FIG. 3b. The outer door opening / closing detection mechanism 11 is returned to the state of FIG.

Next, an embodiment of claim 2 will be described with reference to FIG.

The microswitch 15 is mounted in the device so that the contacts come into contact when the outer door 5 is opened. Further, a latch circuit 16 is connected to the micro switch 15, and the micro switch 15 keeps electrically holding the information turned on and off. Even when the power supply of the device is turned off, the latch circuit 16 can be operated by being supplied with power from the backup power supply of the memory 19. Here, when the power of the device is turned on, the microprocessor 21 detects the state of the latch circuit 16 and recognizes whether the outer door is opened or closed. If the outer door is opened or closed, the same as above. Then, the state of the medium storage 3 and the medium management information of the memory 19 are compared.

Further, since the state of the micro switch 15 can be constantly monitored by the microprocessor 21, if the outer door is opened during the operation of the medium carrying section 2, it is possible to make an emergency stop.

[0023]

According to the present invention, since the storage medium can be managed without the medium presence / absence sensor of the medium storage rack, the storage medium can be managed at low cost and the reliability can be improved by reducing the sensors.

Further, since the outer door open / close detection mechanism can be used as an interlock of the apparatus, the safety can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing an optical disk library device.

FIG. 2 is a schematic view of an outer door open / close detection mechanism.

FIG. 3 is a schematic view of an outer door open / close detection mechanism.

FIG. 4 is a block diagram of an outer door open / close detection circuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Optical disk library apparatus, 2 ... Medium conveyance part, 3 ... Medium storage box, 4 ... Optical disk drive apparatus, 5 ... External door, 6 ... Shelf position detection sensor, 7 ... Elevator motor, 8 ... Synchronous belt, 9 ... Elevator Guide shaft, 10 ... Optical disk cartridge, 11 ... Outer door open / close detection mechanism, 12 ... Inlet, 13 ... Stopper, 14 ... Spring, 15 ... Micro switch, 16 ... Latch circuit, 17 ... Power supply line, 18 ... Backup power supply, 19 ... Memory, 20 ... Data bus, 21 ... Microprocessor.

Claims (2)

[Claims] 1. A storage shelf for storing a plurality of data recording media, a recording / reproducing device for recording / reproducing data, a medium carrying mechanism for carrying a medium between the storage shelf and the recording / reproducing device, and medium presence / absence information of the storage shelf. In a data recording medium automatic exchange device having a non-volatile memory (medium management memory) for storing the data, a matching recheck of the data in the medium management memory and the presence / absence of a medium in the actual storage shelf is detected and the door of the device is opened / closed. An automatic data recording medium exchange device, characterized in that 2. The automatic data recording medium exchange device according to claim 1, wherein the outer door opening / closing detection sensor also serves as an interlock sensor for emergency stop when the outer door is opened during operation of the device.