JPH0636443A - Disk control system - Google Patents

Abstract

PURPOSE:To reduce the power consumption and to secure the performance by optimizing the motor off time of a floppy disk device of an information processing device. CONSTITUTION:When a program is activated, the contents of a motor off time control table 5, which stores motor off time for each program, are written into a motor off time register 4 which specifies the motor off time of a floppy disk 1 so that a motor off time can be controlled for each program. From the signals of an FD access monitoring section 3 and an I/O access monitoring section 8, an average access interval to the floppy disk is computed and the result is written into the table 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a disk control system in a battery-driven information processing apparatus, and more particularly to on / off control of a floppy disk motor for realizing power saving.

[0002]

2. Description of the Related Art Conventionally, in an information processing apparatus mainly driven by a battery, in order to save power, a user inputs a time for turning off the motor of the floppy disk apparatus for each information processing apparatus to access the floppy disk apparatus. The motor was turned off when the input did not continue for the input time.

[0003]

As described above, in the conventional motor-off control of the floppy disk, the motor is turned off based on the time arbitrarily set by the user. Therefore, the power-saving is realized by the optimum motor-off time setting, and the performance is improved. Was insufficiently secured. That is, if the user sets the motor off time for a long time, the motor continues to rotate for an unnecessary period of time, and a sufficient power saving effect cannot be obtained. If the motor off time is set short, the motor will be repeatedly turned off and on, and the floppy disk access performance will be extremely reduced.

[0004]

DISCLOSURE OF THE INVENTION A disk control system of the present invention comprises a disk access monitoring section which outputs a predetermined signal when an access to a disk apparatus of an information processing apparatus is detected, and a timer value which is interlocked with a timer. It is composed of a motor-off timer that decreases and stops the motor of the disk device when the timer value becomes 0, and a non-volatile memory that stores the program name, disk access count, and disk access interval for one or more programs. The motor off-time management table, the I / O access monitor that outputs a predetermined signal when an input / output command other than the disk device of the information processing device is received, and the I / O access monitor after the signal of the disk access monitor is output. A disk access interval measurement timer for measuring the time until the signal of the O access monitor is output, A disk access counter that counts the number of times the signal from the disk access monitor is output after the signal from the disk access monitor is output until the signal from the I / O access monitor is output. An average access interval calculating means for calculating an average access interval to the disk from the values of the disk access interval measuring timer and the disk access counter, and an average access interval calculating means for calculating the disk access frequency and the disk access interval of the motor off time management table. The average access time calculation / writing means for updating with the value calculated by correction using the average access interval calculated in step A, and the disk access interval of the activated program in the motor off time management table when the program is activated With the means to set in the register The value of the motor-off time register when a signal of the FD access monitor is output and a means for setting the motor-off time register.

[0005]

The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.

The motor-off timer 2 is a subtraction timer and sets the value of the motor-off time register 4 when the signal of the FD access monitor 3 is turned on, and when the timer value becomes 0, the mote of the floppy disk 1 is set. Turn off. The motor-off time register 4 is a memory for storing the value set in the motor-off timer 2. When the program is started, the value of the floppy disk access interval 5-3 is written, but the program is not registered in the motor-off management table 5. If it does not exist or before the program is started, the initial value 5-4 preset by the system is written.

The motor off time management table 5 is a non-volatile memory that stores the floppy disk access interval for each program. Program name check / registration means 6
Registers the program name in the time management table 5 if it does not check whether there is a program name started in the motor off time management table 5 when the program is started.

The FD access monitor 3 turns on a signal when a read or write command is issued from the program to the floppy disk, and the motor-off timer 2, the FD access counter 9, and the FD access interval measuring timer 10 have a floppy disk access. Notify you that The I / O access monitor 8 monitors read / write commands of input / output devices such as keyboards and lines other than floppy disks, and turns on the signal when these commands are issued.

In the FD access counter 9, the signal of the FD access monitoring unit 3 is turned ON until the signal of the FD access monitoring unit 3 is turned ON and the signal of the I / O access monitoring unit 8 is turned ON.
Record the number of times N. The FD access interval measurement timer 10 is an addition timer, and measures the time until the signal of the FD access monitoring unit 3 turns ON and the signal of the I / O access monitoring unit 8 turns ON.

The average access interval calculation means 11 uses the (FD
The value of the access interval measurement timer 10) / (the value of the FD access counter 9) is calculated. Average F in the program
The D access time calculation / writing means 12 is {(value of floppy disk access count 5-2) × (value of floppy disk access interval 5-3) + (value of average access interval calculation means 11)} {(floppy The value calculated by the value of the disk access count 5-2 + 1} is written to the floppy disk access interval 5-3, and the value of the floppy disk access count 5-2 is incremented by 1 and written.

FIG. 2 is a flow chart showing the processing of this embodiment. FIG. 3 shows an example of the motor off time management table 5. FIG. 4 shows an example of signals from the FD access monitor 3 and the I / O access monitor 8.

Next, the operation of this embodiment will be described with reference to FIGS. For the sake of explanation, the contents of the mote-off time management table 5 have already become as shown in FIG.
Is set to 30 seconds.

First, when the user turns on the information processing apparatus, a value of 30 seconds is written in the motor off time register 4. Therefore, if a floppy disk is accessed until a program such as reading the system is started, the motor continues to rotate for at least 30 seconds after that.

When the user next activates the program "ABC", the program name check / registration means 6 is activated and "ABC" is displayed in the motor off time management table 5.
Check if the program is registered.
Since the program "ABC" is already registered in the program name 5-1 from FIG. 3, 1 second (5-3-1) of the corresponding floppy disk access interval 5-3 is written in the motor off time register 4. When the user issues a write instruction from the floppy disk 1 during operation of the program "ABC", the program "ABC" issues a write instruction for the ready data to the floppy disk 1. The FD access monitoring unit 3 recognizes that there is a write instruction, and turns on the FD access signal. The motor-off timer 2 sets the value of the motor-off time register 4 to 1 second, resets the value of the FD access counter 9 to 1, and resets the value of the FD access interval measurement timer 10.

When the program "ABC" next issues a write instruction for the ready data, the signal of the FD access monitor 3 is turned on again, and the value of the FD access counter 9 is incremented by +.
Then, the value of 1 second in the motor off time register 4 is written in the motor off timer 2 again. As shown in FIG. 4, it is assumed that the write instruction is issued five times, and then the write processing is completed and an input request from the keyboard is issued.

When the program "ABC" issues an input request from the keyboard, the signal of the I / O access monitoring unit 8 is turned on, and the FD access interval measuring timer 10 is first turned on.
To stop. Next, the average access interval is calculated by a series of write operations of the program "ABC". In the example of FIG. 4, F
The value of the D access interval measurement timer is 1.5 + 1 + 0.8 +
Since 0.5 + 0.5 seconds = 4.3 seconds and the value of the FD access counter 9 is 5, 4.3 seconds / 5 times = 0.86 seconds is the average FD in a series of write operations. It becomes the access interval. From Fig. 3, 20 accesses and an average access interval of 1 second were taken before the main writing of the program "ABC" was performed, so the average after the main writing operation is (20 times x 1 second x 0.86 seconds). / (20 times + 1 time) =
It becomes 0.99 seconds. This 0.99 seconds is the floppy disk access interval 5-3-1 of the motor-off management table 5.
Write to, floppy disk access count 5-2
The value of 1 is written 20 times + 1 times = 21 times, and waits for another FD access.

When a program such as the program "XYZ" which is not registered in the motor off time management table 5 is started, "XYZ" is written in the program name -n, and the motor off time register 4 has an initial value of 30 seconds. Write.

[0019]

As described above, in the disk control system of the present invention, it is possible to automatically set the motor-off transfer of the disk device for each program. It can be managed, and the user does not have to set the motor off time. Therefore, the optimum motor off time is always set,
The power saving effect more than before can be obtained, and the motor can be turned off / on.
It is possible to prevent the floppy disk access performance from deteriorating due to repeated turning on.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart showing an example of the operation of this embodiment.

3 is a diagram showing an example of the contents of a motor off time management table 5 in FIG.

FIG. 4 is a waveform chart showing an example of signals of an FD access monitoring unit 3 and an I / O access monitoring unit 8 in FIG.

[Explanation of symbols]

1 Floppy disk 2 Motor off timer 3 FD access monitoring unit 4 Motor off time register 5 Motor off time management table 5-1 Program name 5-2 Floppy disk access count 5-3 Floppy disk access interval 5-4 Initial value 6 Program name check Registration unit 7 Input / output 8 I / O access monitoring unit 9 FD access counter 10 FD access interval measurement timer 11 Average access interval calculation unit 12 Average FD access time calculation / writing unit in program

Claims (3)

[Claims] 1. A disk access monitoring unit that outputs a predetermined signal when an access to a disk device of an information processing device is detected, and a timer value is decreased in conjunction with a timer, and when the timer value becomes 0, A motor-off timer for stopping the motor of the disk device, a motor-off time management table configured by a non-volatile memory that stores a program name, a disk access count, and a disk access interval for one or more programs, and a disk device of an information processing device I / O access monitor that outputs a predetermined signal when there is an input / output command other than the above, and from the output of the signal of the disk access monitor to the output of the signal of the I / O access monitor A disk access interval measurement timer that measures time and a signal from the disk access monitoring unit are output. A disk access counter for counting the number of times the signal of the disk access monitor is output before the signal of the I / O access monitor is output from the disk access interval measurement timer and the disk access counter. The average access interval calculating means for calculating the average access interval to the disk from the value of the above, and the correction calculation using the average access interval calculated by the average access interval calculating means for the disk access frequency and the disk access interval of the motor off time management table. An average access time calculation / writing means for updating with the above-mentioned value, a means for setting the disk access interval of the activated program of the motor off time management table in the motor off time register when the program is activated, and the FD.
And a means for setting the value of the motor off time register in the motor off time register when a signal from the access monitor is output. 2. When the program is started, it is checked whether or not the program name of the corresponding started program is registered in the motor off time management table, and if it is registered, the corresponding disk access interval is stored in the motor off time register. It has a program name check / registration means for setting and registering the program name of the program in the motor off time management table when it is not registered and setting a predetermined initial value in the motor off time register. The disk control system according to claim 1. 3. The disk control system according to claim 1, further comprising means for writing a predetermined initial value in the motor off time register when the program is not activated.