JPS61269208A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To inform what kind of abnormality is generated, by generating an error data constituted of plural bits having the contents corresponding to an abnormality, and bringing a lamp to flickering control by making it have a lighting period which is different depending on '1' and '0' of the bit. CONSTITUTION:When a power source switch 3 is turned on, a CPU 1 starts a starting operation, but in this starting operation, whether a magnetic disk has been set normally, and whether a spindle rotates normally, etc. are checked by rotating the spindle. For instance, in case when an index pulse cannot be detected, even if the spindle rotates, due to a fact that there is an abnormality in the magnetic disk, etc., an error processing is executed by generating an error data '0010'. In such error processing, when the bit is '0', an output terminal P is set to a 250ms '0' level after setting it to a 250ms '1' level, and when the bit is '1', the output terminal P is set to a 250ms '0' level after setting it to a 500ms '1' level, and a light emitting diode 9 is brought to a flickering control by bringing a transistor 7 to on/off control.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] This invention relates to a magnetic recording device that can display various abnormalities with lamps.

[Prior Art and Problems to be Solved by the Invention] Conventionally, magnetic storage devices have been designed to display lamps to indicate that they are in operation while recording or reproducing information on a magnetic disk. Furthermore, various devices are known that simply display an abnormality when it occurs. However, in magnetic recording devices, 'lit! It was not possible to analyze and accurately notify abnormalities that occur during startup or for a certain period of time after startup. Therefore, if an abnormality occurs during startup and operation becomes impossible, the cause must be investigated over time, which is extremely troublesome.

This invention has been made in view of these points, and has a simple configuration that allows abnormalities that occur during startup or a certain period of time after startup to be displayed, including their details, using a lamp that indicates that the operation is in progress. It is an object of the present invention to provide a magnetic recording device that can accurately display an abnormality and, therefore, can immediately take action against the abnormality.

[Means for Solving the Problems] The present invention records and reproduces information by controlling the rotation of a magnetic disk having a plurality of storage tracks and selectively moving a magnetic head to each track of the magnetic disk. In a magnetic recording device that displays the operating status with a lamp, there is a checking means that checks the status of each part such as the rotation control unit of the magnetic disk when it is started by turning on the power switch and detects various abnormalities. An error data generating means that generates multiple bits of error data with different data contents depending on the abnormal state when various abnormalities are detected; “1” for each bit of data, “
The lamp control means controls blinking by changing the lighting period of the lamp according to the "0".

[Function] In the present invention having such a configuration, when the startup is started, the status of each part such as the rotation control unit of the magnetic disk is checked, and if there is an abnormality, a multi-bit configuration having data contents corresponding to the abnormality is detected. Error data is generated, and a lamp that normally indicates the operating status is controlled to blink based on the bit contents of the error data, with different lighting cycles for bits ``1'' and ``Oj''. This is to let you know if something has occurred.

[Embodiments of the invention] Embodiments of the invention will be described below with reference to the drawings.

In FIG. 1, 1 is a CPU (central processing unit), and a data path line 2 is connected to this CPU 1. Further, a turn-on signal from the power switch 3 is inputted to the CPLJ1, and the CPU 1 starts booting based on this turn-on signal. Data such as a write signal, a track zero signal, and an index signal are input and output to and from the CPU via the data path line 2. The CPU 1 controls each data of the write signal, track zero signal, and index signal,
If there is data that cannot be controlled, the data is compared and error handling is performed.

The CPL 11 is provided with a loop counter 1a. A signal from the output terminal P of the CPjJ1 is latched by a latch circuit 4 and supplied to one input terminal of a two-man NAND gate 5. A drive select signal is input to the other input terminal of the Nant gate 5. Note that the drive select signal is input from the host computer 6.

The output of the Nant gate 5 is a PNP type transistor 7.
It is also supplied to the host computer 6. The transistor 7 has its emitter connected to the +■ terminal, and its collector grounded via a resistor 8 and a light emitting diode 9 serving as a lamp.

The host computer 6 is also provided with a light emitting diode 10, and the anode of the light emitting diode 10 is connected to a resistor 11.
It is connected to the +■ terminal via the +■ terminal, and its cathode is connected to the line connected to the output terminal of the AND gate 5.

As shown in FIG. 2, the light emitting diodes 9 can be selectively attached to and removed from a plurality of holes 14 provided in a front panel 13 provided on the front side of the main body case 12 of the device. That is, the light emitting diode 9 can be mounted at a position where the operating state of the device can be easily checked.

When the power switch 3 is turned on, the CPU 1 starts booting and performs the processing shown in FIG. 3. That is, the spindle is rotated and the index pulse (signal) from the magnetic disk is checked for 4 seconds. If no pulse is detected, the spindle is rotated again and the index pulse from the magnetic disk is checked for 4 seconds. If no pulse is detected even after this check, for example, 4-bit error data ro010J is generated and error processing is performed. Further, when a pulse is detected in these two index pulse checks, the spindle is then further rotated for a certain period of time to check the rotation speed of the magnetic disk. If the rotational speed of the magnetic disk is normal, "1" is output to the output terminal P to control the light emitting diodes 9 and 10 to be turned on continuously. Furthermore, if there is an abnormality in the rotational speed of the magnetic disk, error data roo11J is generated and error processing is performed.

Error processing is performed by the CPU 1 based on FIG. 4. That is, first the spindle is stopped and error data is loaded. Next, the light emitting diodes 9 and 10 are turned off. After performing the delay processing of lll5, "4" is set in the loop counter 1a. In this state, the light emitting diodes 9 and 10 are turned on and the last bit of the error data is checked. And the last bit is "1"
If so, the light emitting diodes 9 and 10 are turned off after performing a delay process of 500 n+s. Further, if the final bit is rOJ, a delay process of 250 m5 is performed and then the light emitting diode 9.10 is turned off. A delay process of %i/J 250IIs of this off control is performed, and the error data is shifted by one digit. Furthermore, loop counter 1
The content of a is subtracted by 1 and it is checked whether the content has become zero. If it is not zero, the light emitting diode 9.10 is turned on and the final bit is checked again. If it is zero, the error data is loaded again and the routine returns to the OFF control of the light emitting diodes 9 and 10.

In the embodiment of the present invention having such a configuration, when the power switch 3 is turned on, the CPU 1 starts a startup operation, but during this startup operation, the spindle is rotated to check whether the magnetic disk is properly set and whether the spindle is rotating. Check whether it is normal. If the results of this check are normal, the output level of the output terminal P is held at "1", the output level of the Nantes gate 5 is set to "0", the transistor 7 is turned on, and the light emitting diode 9 is lit continuously. . Furthermore, the light emitting diode 10 of the host computer 6 is also turned on continuously. In this way, the device enters the operating state and performs playback and writing on the magnetic disk.

Furthermore, if the index pulse cannot be detected even when the spindle rotates due to, for example, an abnormality in the magnetic disk, error data roo10J is generated and error processing is performed. And in this error handling, the bit is “0”
”, the output terminal P is set to 250m5 r I J level and then set to 250m5 [OJ level, and when the bit is “1”, the output terminal P is set to 50018
r I J level and then 250a+s r OJ
level. This controls the transistor 7 to turn on and off, thereby controlling the light emitting diode 9 to blink. Therefore, when the error data is roloJ, it is checked from the RH bit of the data, so the light emitting diode 9 is r 250
m5 on, 250m5 off, 500m5 on, 250+
l13 off, 250103 on, 25h+s off, 25
0115 on, 250 RIS off" blinking operation will be repeated. Of course, the light emitting diode 10 provided on the host computer 6 side also performs a similar blinking operation. In addition, if there is an abnormality in the rotation of the magnetic disk, for example due to an abnormality in the spindle, the error data "0011"
occurs and handles the error. Therefore, in this error processing, the light emitting diode 9 is [500IllS on, 250m
5 off, 500m5 on, 250118 off, 250+
ms on, 25015 off, 250n+s on, 250
"m5 Off" flashing repeatedly. Of course, in this case as well, the light emitting diode 10 provided on the host computer 6 side performs the same blinking operation.

In this way, the light emitting diode 9 that lights up continuously during operation is commonly used, and the light emitting diode 9 is controlled to blink to indicate an error state due to an abnormality, so only one light emitting diode is required, and the configuration is simple. Abnormalities can be displayed. Furthermore, in this case, the light emitting diode is not simply controlled to blink, but the blinking state is changed depending on the content of the abnormal condition, so it is possible to easily confirm what kind of abnormality has occurred in the light emitting diode. Therefore, even if a repair is required, for example, the cause of the abnormality can be roughly understood, and the repair can be carried out smoothly. In addition, a light emitting diode is also provided on the host computer side, so
When the device is remotely controlled, the host side can also easily check the details of the device's abnormality.

Furthermore, since the light emitting diode 9 can be selectively attached to and removed from a plurality of holes 14 provided in the front panel 13, the light emitting diode 9 can be attached or detached depending on the location where the device is installed.
The mounting position of the light emitting diode 9 can be changed.
can be placed in a visible position at all times. Note that the unused holes 14 may be masked from the rear side of the panel 13.

In addition, in the above embodiment, a case has been described in which abnormality detection with two different contents is performed and the light emitting diode blinks in two ways, but the invention is not necessarily limited to this, and abnormality detection with three or more different contents is performed. and light emitting diode 3
Blinking may be controlled more than normal.

[Effects of the Invention] As detailed above, according to the present invention, abnormalities that occur during startup or during a certain period of time during startup can be displayed, including their details, using a lamp that indicates that the operation is in progress, and the configuration is simple. Therefore, it is possible to provide a magnetic recording device that can accurately display an abnormality and, therefore, can immediately respond to the abnormality.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a circuit configuration diagram of the main part, Fig. 2 is a partial external view, Fig. 3 is a flowchart showing abnormality check processing at startup by the CPU, and Fig. 4 is a CPU
2 is a flow chart showing error processing according to the method. 1...CPU (central processing unit), 3...Power switch, 7...PNP type transistor, 9...Light emitting diode. Applicant's agent Patent attorney Takehiko Suzue No. 2 Figure 3 rgJ

Claims (1)

[Claims] In a magnetic recording device that controls the rotation of a magnetic disk having a plurality of storage tracks, selectively moves a magnetic head to each track of the magnetic disk to record and reproduce information, and displays a lamp to indicate the operating status, a power source is used. A checking means for checking the state of each part such as a rotation control part of the magnetic disk to detect various abnormalities when the magnetic disk is started up by turning on a switch, and various abnormalities are detected by this checking means. and an error data generating means for generating multiple bits of error data each having different data contents depending on the abnormal state thereof, and controlling the lamp according to the error data generated by the error data generating means for each bit of the error data. 1. A magnetic recording device comprising: lamp control means for controlling blinking of the lamp by varying the lighting period of the lamp according to "1" or "0" of the lamp.