JPH01100770A - Information processor - Google Patents

Abstract

PURPOSE:To save a power and to protect data by providing a controller which cuts off power supplying to a fixed magnetic memory device as protecting the data when no fixed magnetic memory device is required. CONSTITUTION:A HOST 1 performs the control of a hard disk controller device 2, and the controller device 2 performs the control of a hard disk device (fixed magnetic memory device) 3. Also, a power source 5 supplies the power to each unit, and a hard disk power source controller 4 controls the power supplying to the hard disk device. And when the fixed magnetic memory device 3 is invalid and also, a head is positioned outside a data area, the power supplying to the memory device 3 is cut off. In such a way, it is possible to realize both the saving of the power and the protection of the data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information processing apparatus having a fixed magnetic storage device such as a hard disk or a floppy disk.

[Conventional technology]

In recent years, fixed magnetic storage devices (hereinafter referred to as hard disk devices) have been widely used in the field of information equipment, and one of them is a hard disk device that uses winchester technology.

[Problem that the invention seeks to solve]

When building a voke-pull information device using such a device, the problem is power consumption.

In other words, the power consumption to drive the hard disk is
In the case of a vortaple type information processing device that is powered by a battery or the like, this poses a large burden.

In order to solve the above-mentioned problems, the present invention aims to provide a device that starts a hard disk drive when necessary, stops it when unnecessary, and protects data when stopping. do.

[Failure to solve the problem]

The present invention is an information device having a fixed magnetic storage device, characterized by having a control device that protects data and cuts off power supply to the fixed magnetic storage device when the fixed magnetic storage device is unnecessary. .

[Effect]

In the present invention, a fixed magnetic storage device such as a hard disk drive is stopped while protecting data when it is not needed.

〔Example〕

FIG. 1 is a diagram showing an embodiment applied to the present invention.

To explain the block diagram of FIG. 1, there is 1 (HO3T), 1 controls 2 (hard disk controller device), and 2 controls 3 (hard disk device). Further, 5 (power supply) supplies power to each unit.

4 (hard disk power control device) controls the supply of power to the hard disk device.

Figure 2 shows details of 4. The signal 9 is the information of the previous switch (this information does not have to be mechanical information), and its meaning is a signal indicating whether to enable or disable the hard disk drive. Reference numeral 11 is a power supply line from 5 shown above, and 12 is a line for supplying power to 5, which is controlled by 7 (power ON 10 FF circuit).

Is the signal of 8 supplying power to 5 at 7?
This is a signal that someone is not there. A signal 6 is output from 2 and indicates the status of the hard disk device. This state indicates the state of the hard disk device. This state refers to the he
Detected from ad location information. There are two detection methods as follows. The first method is to physically detect the head position of the hard disk drive 3. The second method is to output using software means in step 2. The 11 signals are generated by software means as described below.

The access to the hard disk device 3 is monitored, and if there is no access to the hard disk device 3 for a certain period of time since the last access, the head of the hard disk device 3 is
is placed in a place other than the Data area, and after that, 11 signals are output.

To explain the operation of this device in Fig. 3, first 14
It is determined whether the signal at 9 is valid (1 state) or invalid (0 state B), and if it is in the valid state, power is supplied at 15. When an invalid state is detected at I4, the state of the signal 6 is checked at 16. If the state of 6 is that the head is in the Data area (state of 1), the signal of 10 continues to maintain the state of power supply M (state of 1) in 5, and the signal of 6 is when the head of the hard disk drive is D.
17 for n that detected a location other than the ata area (0 state)
state and stops supplying power to the hard disk drive.

〔Effect of the invention〕

As described in detail above, according to the present invention, when the fixed magnetic storage device is disabled and the head is located outside the data area, the power supply to the storage device is cut off, thereby saving power and protecting data. Both can be achieved together.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a diagram showing a part of FIG. 1 in more detail. FIG. 3 is a flowchart explaining the operation of FIG. 2. Figure 1 Figure 2

Claims (1)

[Claims] An information processing device having a fixed magnetic storage device, characterized in that the information processing device has a control device that protects data and cuts off power supply to the fixed magnetic storage device when the fixed magnetic storage device is unnecessary.