JPH05240672A - Method for managing equipment-state - Google Patents

Abstract

PURPOSE:To easily manage the operating performances of devices which make required operations by. means of operating sections under the control of a control section at every device. CONSTITUTION:In a device provided with a control section 41 and operating section 43 controlled by means of the section 41, a nonvolatile memory 42 is provided to the control section 41 and the operating performance of the device is measured by operating the operating section 43 by mean of the control section 41. By storing measured values in the memory 42, the measured values are read out at the time of performing maintenance on the device.

Description

Detailed Description of the Invention

(Table of Contents) Industrial Application Field of the Prior Art Problems to be Solved by the Invention Means for Solving the Problems (FIG. 1) Action Example (a) Description of One Example (FIGS. 2 to 5) (B) Description of other embodiments Effect of the invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device state management method for controlling a device state such as operational performance in a device in which a control section controls an operation section to perform a desired operation.

It is widely used in information storage / reproduction devices such as optical disk devices (including magneto-optical disk devices) and magnetic disk devices, and is widely used in the field. In such a device, since the control unit controls the operation unit, the device performance is in a certain range, but is different from each other.

Therefore, at the time of starting up the device before shipment, the device is operated to check the operation performance of the device, and at the time of temporary maintenance after shipment (unit replacement due to failure occurrence,
At the time of adjustment) and at the time of regular maintenance, the device is operated to diagnose the operating performance.

For example, in a magneto-optical disk device, a tester operates the device to measure the CNR (carrier noise ratio) of the reproduced signal, the error rate of write / read, and the average seek speed to determine the operating performance. I have a diagnosis.

In such devices having different performances,
It is necessary to manage the device performance in order to verify the device performance.

[0007]

2. Description of the Related Art In the conventional management of device performance, when operating the device before shipment from the factory, the measured operating performance is recorded and left in a data sheet for each device, and the unit is replaced after shipment. At the time of adjustment and periodic maintenance, the device was operated and the operating performance was measured. If it was within the prescribed normal range, it was judged to be good, and the measurement results were entered in materials such as the maintenance table and managed. ..

[0008]

However, the prior art has the following problems. The operating performance when the device is started up is the reference performance of the device.However, since the operating performance cannot be determined by comparison with it, it is not possible to judge whether the prescribed performance has been obtained when replacing the unit, etc. It will be a judgment.

Although it is possible to use the data sheet at the time of starting up the device at the time of replacement, etc., the data sheet is managed for a large number of products and also for devices shipped not only domestically but also abroad. It is not easy, and it is actually difficult to find the corresponding data sheet when a failure occurs.

Therefore, an object of the present invention is to provide a device state management method capable of easily managing the operating performance of a device for each device.

[0011]

FIG. 1 shows the principle of the present invention. According to claim 1 of the present invention, the controller 41 and the controller 4 are provided.
In the device having the operation unit 43 controlled by 1, the nonvolatile memory 42 is provided in the control unit 41, and the operation unit 43 is operated by the control unit 41 at the time of starting the device to operate the device. The performance is measured, the measured value is stored in the non-volatile memory 42, and the measured value in the non-volatile memory 42 is read at the time of maintenance of the apparatus.

According to claim 2 of the present invention, in claim 1,
At the time of maintenance of the device, the operation unit 43 is operated by the control unit 41, the operation performance of the device is measured, and compared with the read measured value.

A third aspect of the present invention is characterized in that, in the first or second aspect, the features of the device are stored in the non-volatile memory 42. Claim 4 of the present invention relates to claim 1.
Alternatively, in 2 or 3, the error content is stored in the non-volatile memory 42 when an error occurs in the device.

According to a fifth aspect of the present invention, in the first, second, third, or fourth aspect, the operating section 43 is an information storage / reproduction mechanism, and the operation performance is the information storage / reproduction performance of the information storage / reproduction mechanism. It is characterized by being.

According to a sixth aspect of the present invention, in the first aspect,
The information storage / reproduction performance is a storage / reproduction performance and a seek performance. Claim 7 of the present invention is claim 5
Alternatively, in 6, the information storage / reproduction mechanism uses the seek mechanism 12 to move the head 10 to the information storage disk 20.
Is positioned to perform information storage / reproduction operation.

[0016]

In the first aspect of the present invention, the control unit 41 is provided with the non-volatile memory 42, and the control unit 41 is provided when the apparatus is started up.
To operate the operation unit 43 to measure the operation performance of the device, store the measured value in the non-volatile memory 42, and store the measured value in the non-volatile memory 42 during maintenance of the device. Since it is read, the operating performance at the time of starting the device can be easily grasped, and the diagnosis and the like can be executed accurately and easily.

According to claim 2 of the present invention, during maintenance of the device,
Since the control unit 41 operates the operation unit 43 to measure the operation performance of the device and compare it with the read measurement value, it is possible to accurately and easily diagnose each device.

According to the third aspect of the present invention, since the features of the device are stored in the non-volatile memory 42, the device version number of the device can be easily grasped, and the diagnostic analysis becomes easier and more accurate.

According to the fourth aspect of the present invention, when an error occurs in the device, the error content is stored in the non-volatile memory 42, so that analysis at the time of failure can be easily performed. In claim 5 of the present invention, the operating unit 43 is the information storage / reproduction mechanism, and the operation performance is the information storage / reproduction performance of the information storage / reproduction mechanism. Easy and accurate management.

According to the sixth aspect of the present invention, since the information storage / reproduction performance is the storage / reproduction performance and the seek performance, it is possible to manage the operation performance required for the information storage / reproduction device. According to claim 7 of the present invention, the information storage / reproduction mechanism positions the head 10 with respect to the information storage disk 20 by the seek mechanism 12 to perform the information storage / reproduction operation. The required device performance can be measured and managed.

[0021]

【Example】

(a) Description of an Embodiment FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a block diagram of an embodiment of the present invention, showing a magneto-optical disk device.

In FIG. 2A, 1 is a magneto-optical disk device, 10 is an optical head for irradiating the optical disk 20 with light for writing and reading, and 11 is a VC.
M (voice coil motor) coil, optical head 1
0 is driven in the radial direction of the optical disk 20, 12 is a positioner (movable part),
The CM coil 11 is provided.

Reference numeral 13 is an inner peripheral stopper of the positioner 12, and 14 is an outer peripheral stopper of the positioner 12.
Reference numeral 15 is a spindle motor that rotates the optical disk 20, and 16 is an external magnet that applies a magnetic field to the optical disk 20 to enable writing.

Reference numeral 2 denotes an optical disk cartridge, which is equipped with an optical disk 20 and is attached to and detached from the magneto-optical disk device 1. In FIG. 2 (B), 17 is a light emitting part, which is composed of an LED (light emitting diode), is provided in the positioner 12, and emits light to the semiconductor position detecting element 18, and 18 is a semiconductor position detecting element (PSD). It is provided in parallel with the movement path of the positioner 12, detects the light of the light emitting portion 17 by the light receiving surface 18a, and generates a current output corresponding to the position (absolute position) of the positioner 12.

In FIG. 3, reference numerals 30 and 31 denote current / voltage converters for converting the current outputs I ₁ and I ₂ across the semiconductor position detecting element 18 into voltages V ₁ and V ₂ , respectively.
32 is a difference circuit, which subtracts the voltage V ₂ from the voltage V ₁ .
An AD (analog / digital) converter 33 that generates a position signal converts an analog position signal into a digital signal and inputs the digital signal to the control unit 41.

Reference numeral 34 is a DA (digital / analog) converter for converting the digital drive signal of the control section 41 into an analog drive signal, and 35 is a difference circuit for subtracting the drive signal from the position signal to obtain a position error signal. , 36 is a phase compensating circuit for advancing the high frequency component of the position error signal to perform phase compensation, 37 is a VCM drive amplifier, and the output of the phase compensating circuit 36 is used for the VCM coil of the positioner 12. 11 is current-driven.

Reference numeral 38 is a track servo control unit, which detects the track error signal TES from the reflected light of the optical head 10 to servo-control the track actuator of the optical head 10, 39 is a focus servo control unit, Detecting the focus error signal FES from the reflected light of the head 10 to servo-control the focus actuator of the optical head 10. Reference numeral 40 is a read / write circuit, which causes the optical head 10 to perform a read operation and outputs a read (reproduction) signal. The data is output, the write operation is performed, and the writing is performed.

Reference numeral 41 is a control unit, which is composed of a microprocessor (MPU) and performs seek control, read / write control, etc. by executing a program in accordance with an instruction from a host, and 42 is a non-volatile memory, EEPROM.
(Electrically erasable programmable read only memory), and stores parameters and the like.

In this embodiment, the VCM coil 11 can be driven by the position error signal which is the difference between the drive signal of the control unit 41 and the position signal. That is, the control unit (hereinafter, referred to as a processor) 41 calculates the output value X with respect to the target position r given from the higher order, and outputs the drive signal X to the DA converter 34.
And a position error signal between the position signal of the semiconductor position detecting element 18 generated from the difference circuit 35 and the drive signal X of the DA converter 34 is supplied to the VCM coil 11 via the phase compensation circuit 36 and the VCM drive amplifier 37. , Seek move.

When the position signal from the AD converter 33 reaches the target position, the processor 41 determines that the position has been positioned at the target position (track), determines that the seek is completed, and ends the seek operation.

After that, the processor 41 servo-turns on the track servo control unit 38 and the focus servo control unit 39, and the read / write circuit 40 causes the optical head 1 to operate.
Read / write 0.

FIG. 4 is an explanatory view of an embodiment of the present invention, and FIG. 5 is a flow chart of a start-up processing of the embodiment of the present invention. 4, the same components as those shown in FIG. 3 are designated by the same symbols, and 5 is a spectrum analyzer, which analyzes the spectrum of the reproduction signal from the read / write circuit 40 and Noise ratio), 6 is a terminal device, which has a display section and an input section, inputs a measurement value from the input section (keyboard), and reads out the measurement value from the nonvolatile memory 42. , 7 is a tester, which issues a seek command to the processor 41 to perform a seek operation, measures the seek time, and measures the read / write error rate.

The process when the apparatus is started up will be described with reference to FIG. The power is turned on, and the startup operation such as adjusting the volume of the device (not shown) and setting the dip switch is performed.

The tester 7 instructs the processor 41 of the magneto-optical disk device 1 to write / read specific data to the innermost part of the optical disk 20 a plurality of times, and the processor 4
Under the control of 1, the read / write circuit 40 causes the optical head 10 to write / read, report the result, and measure the error rate.

The read reproduction signal at that time is analyzed by the spectrum analyzer 5, and the CNR of the reproduction signal is measured. Next, the tester 7 instructs the processor 41 of the magneto-optical disk device 1 to perform random seek, and the processor 41
The seek systems 10 to 38 are controlled by the control of, and the seek is performed at random, and the seek completion is received for each individual seek,
The seek time of each seek is measured by the tester 7, and the average seek time is calculated.

After the measurement, the terminal (terminal device) 6
Then, the measured error rate, CNR, and average seek time are input to the processor 41 of the magneto-optical disk device 1 and written in the nonvolatile memory 42.

Similarly, from the terminal (terminal device) 6, the processor 41 of the magneto-optical disk device 1 is provided with the date of execution at the time of test, the operator, the device number, and the device version number.
To write to the non-volatile memory 42.

Then, the power is turned off, and the process ends. By doing so, the device performance at the time of starting the device and at the time of device testing can be held in the nonvolatile memory 42 in the device.

When the processor 41 detects the occurrence of an error during operation in the post-shipment field, the error content is stored in the nonvolatile memory 42 as an error code. on the other hand,
During temporary maintenance (when a failure occurs) or during regular maintenance, the terminal device 6
The device performance of the non-volatile memory 42 is read, displayed, and printed via the processor 41 of the magneto-optical disk device 1.

For this reason, when the device is adjusted or the unit is replaced, the maintenance personnel or the like connects the tester such as the tester 7 and the spectrum analyzer 5 and measures the device performance at that time. Compared with performance, it can be easily diagnosed.

Further, if the logged error contents are read, the cause of the trouble or the like can be easily analyzed, and if the device version number and the date of implementation are read, it is easy to deal with. In this way, since the device is provided with the non-volatile memory 42 and the measured device performance is stored, it is not necessary to separately manage the device performance for each device by a separate document, etc. Therefore, management of device performance becomes easy and accurate diagnosis is possible.

(B) Description of Other Embodiments In addition to the above embodiments, the present invention can be modified as follows. As described in the magneto-optical disk device, the optical disk device,
It can also be applied to other devices such as an information storage / reproduction device such as a magnetic disk device and a printer device.

As the tester, a dedicated tester that can be input may be used. It is also possible to store the measured values at the time of measurement such as individual maintenance in the non-volatile memory to retain the performance history.

The present invention has been described above with reference to the embodiments.
Various modifications are possible within the scope of the invention, and these modifications are not excluded from the scope of the invention.

[0045]

As described above, according to the present invention,
It has the following effects. Since the non-volatile memory 42 is provided in the device and the measured device performance is stored in the device, it is not necessary to manage the device performance for each device by a separate material etc. Performance management becomes easy.

Moreover, since the data is stored in each device, the diagnosis of the device at the time of adjustment, replacement and maintenance becomes accurate.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a configuration diagram of an embodiment of the present invention.

FIG. 3 is a block diagram of an embodiment of the present invention.

FIG. 4 is an explanatory diagram of an embodiment of the present invention.

FIG. 5 is a flowchart of a startup process according to an embodiment of the present invention.

[Explanation of symbols]

 1 Magneto-optical disk device 2 Optical disk cartridge 5 Spectrum analyzer 6 Terminal device 7 Tester 10 Optical head 11 VCM coil 12 Positioner 40 Read / write circuit 41 Controller 42 Non-volatile memory

Claims (7)

[Claims] 1. A device having a control section (41) and an operation section (43) controlled by the control section (41), wherein the control section (41) is provided with a non-volatile memory (42), When the device is started up, the operating unit (43) is operated by the control unit (41) to measure the operating performance of the device,
The apparatus state management method, characterized in that the measured value is stored in the non-volatile memory (42) and the measured value of the non-volatile memory (42) is read out during maintenance of the apparatus. 2. The controller (4) at the time of maintenance of the device.
2. The device state management method according to claim 1, wherein the operation unit (43) is operated according to 1), the operation performance of the device is measured and compared with the read measured value. 3. The device state management method according to claim 1, wherein the features of the device are stored in the non-volatile memory (42). 4. The apparatus state management method according to claim 1, wherein the error content is stored in the non-volatile memory (42) when an error occurs in the apparatus. 5. The operation unit (43) is an information storage / reproduction mechanism, and the operation performance is an information storage / reproduction performance of the information storage / reproduction mechanism. Device status management method. 6. The apparatus state management method according to claim 5, wherein the information storage / reproduction performance is a storage / reproduction performance and a seek performance. 7. The information storage / reproduction mechanism is characterized in that the seek mechanism (12) positions the head (10) with respect to the information storage disk (20) to perform an information storage / reproduction operation. 7. The apparatus state management method according to claim 5 or 6.