JP2569909B2 - Hard disk device protection device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a protection device for a hard disk-mounted device, and more particularly, can protect data in a recording area of a hard disk when the device is shocked. The present invention relates to a protection device for a hard disk device.

[Prior Art] Conventionally, in this type of apparatus, for example, Japanese Patent Application Laid-Open No. 62-8926
As shown in No. 9, when equipment is carried,
In order to prevent the data in the hard disk recording area from being destroyed, a protection device for hard disk-equipped devices that detects shocks, stops writing and reading operations, and moves the hard disk head to the shipping zone Proposed.

[Problems to be Solved by the Invention] However, in the conventional protection device for a hard disk device, the write operation is immediately stopped when an impact is detected during the data write operation to the recording area by the head. However, there is a problem that data may be lost without writing due to the timing of the stop.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has been made in consideration of the protection of a hard disk capable of reliably restarting writing without any loss of data even in the event of a shock during data writing. It is intended to provide a device.

[Means for Solving the Problems] In order to achieve this object, a protection device for a hard disk device of the present invention includes a detecting device for detecting that the hard disk device has been subjected to an impact. On the basis of the signal, the head of the hard disk is moved to the shipping zone to protect data recorded in the recording area of the hard disk, and in particular, writing of data to the recording area by the head. When a signal from the detection unit is generated during the operation, after the head is moved to the shipping zone, the evacuation unit saves the data being written to the memory prior to moving the head to the shipping zone. Checking means for checking whether or not a signal is generated from the detecting means at predetermined time intervals; and If the generation of the signal from the detection means is not confirmed within the predetermined time, the data read by the save means is read from the memory in order to restart the writing of data to the recording area by the head. Means.

[Operation] In the protection device for a hard disk-mounted device of the present invention having the above configuration, when a signal is output from the detection unit while data is being written to a recording area by the head, the head is moved to the shipping zone. Prior to the transfer, the saving means saves the data being written to the memory. Next, after the head is moved to the shipping zone, the checking means checks at every predetermined time whether or not a signal from the detecting means is generated. Next, if the checking means does not check the generation of a signal from the detecting means within the predetermined time, the reading means sets the evacuation in order to restart writing of data to the recording area by the head. The data saved by the means is read from the memory.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

First, the configuration of the hard disk device will be described with reference to FIGS.

In the case of the present embodiment, the hard disk device is constituted by a portable personal computer 1 with a built-in hard disk. The portable personal computer 1 includes a keyboard 2 for inputting characters and control information, a memory 3 for storing characters and control information,
A display device 4 for visually recognizing the input result (data); a hard disk 5 for storing documents; a hard disk controller 6; acceleration sensors 7, 8, 9; It is composed of

The acceleration detecting mechanism, which is the detecting means of the present invention, has an X direction,
Acceleration sensors 7, 8, 9 arranged in the Y and Z directions,
Acceleration detection latches 11, 12, and 13 for holding signals from the acceleration sensors 7, 8, and 9, respectively;
And an OR circuit 14 for ORing the signals from the signal 13.

The hard disk 5 has a spindle motor 15 and a rotating shaft.
A magnetic disk 17 rotating in the direction of arrow A around 16; a head 18 for recording data in a data recording area 20 of the magnetic disk 17 and reading data recorded in the data recording area 20; It is composed of

Next, the protection operation of the hard disk in the portable personal computer 1 of the present embodiment will be described with reference to FIGS.

A character is input from the keyboard 2, a document is created while checking it on the display device 4, and the document is stored in the memory 3. When the amount of documents stored in the memory 3 reaches an appropriate amount, the documents are transferred to the hard disk 5. In addition, data is read from the hard disk 5 when performing kana-kanji conversion.

In order for the hard disk 5 to be accessed as described above, as shown in FIG.
Move so as to face the data recording area 20. At this time, when the portable personal computer 1 is lifted and receives an impact, at least one of the acceleration sensors 7, 8, and 9 generates a signal, and at least one of the acceleration detection latches 11, 12, and 13 generates a signal. I do. The OR circuit 14 receives the signal and generates an acceleration detection signal, and the CPU 10 senses this signal. Thereafter, the CPU 10 clears the acceleration detection latch.

As a result, the CPU 10 starts the interrupt processing shown in FIG. 3, and stops the processing of writing data to the data recording area 20 by the head 1. At this time, document control information such as data that has not been written due to the stop of the writing process is saved in the memory 3 (S1). Then, the head 18 is moved to above the shipping zone 21 on the magnetic disk 17 via the hard disk controller 6 (S2).

After a predetermined time has elapsed (S3), the CPU 10 again checks the output of the OR circuit 14, that is, whether or not the acceleration detection signal is generated (S3).
4) If an acceleration detection signal is generated (S4 • YES),
Returning to S3, the standby operation is started again. On the other hand, if no acceleration detection signal has been generated (S4: NO), the document control information saved in the memory 3 is read out (S5) and the head
18 is transferred from the shipping zone 21 to the original data recording area 20 (S6), and the process returns to the process of writing data to the data recording area 20 by the head 1.

In the portable personal computer 1 configured as described above, the head 1 is controlled based on signals from the acceleration sensors 7, 8, and 9.
By moving the magnetic disk 8 from the data recording area 20 of the magnetic disk 17 to the shipping zone 21, the magnetic disk 17 is automatically moved even if the head 1 receives an impact during the data writing processing to the data recording area 20. It is possible to prevent the data in the data recording area 20 from being destroyed, and to surely restart the process of writing data to the data recording area 20 after the impact has subsided.

[Effects of the Invention] As is apparent from the above description, according to the protection device for a hard disk-mounted device of the present invention, when a signal from the detection unit is generated while data is being written to a recording area by a head. In addition, before the head is moved to the shipping zone, the saving means saves the data being written to the memory, so that the data being written is not lost. Further, after the head is moved to the shipping zone, the checking means checks whether or not a signal is generated from the detecting means at predetermined time intervals, so that it is possible to reliably detect that the shock has subsided, As soon as the condition has subsided, the data writing process can be restarted. Further, if the checking means does not check the generation of a signal from the detecting means within the predetermined time, the reading means sets the evacuation means in order to restart writing of data to the recording area of the head. Since the saved data is read out from the memory, the data write processing of the write interruption transition can be reliably restarted.

[Brief description of the drawings]

FIGS. 1 to 3 show an embodiment embodying the present invention. FIG. 1 is a block diagram showing a configuration of a portable personal computer to which the present embodiment is applied, and FIG. FIG. 3 is a block diagram showing a typical configuration, and FIG. 3 is a flowchart of interrupt processing. In the figure, 1 is a hard disk device, 7, 8 and 9 are acceleration sensors, 10 is a CPU, 17 is a magnetic disk, 18 is a head, 2
0 is a data recording area, and 21 is a shipping zone.

Claims (1)

(57) [Claims] A detecting device for detecting that the hard disk device has been subjected to an impact; moving a head of the hard disk to a shipping zone on the basis of a signal from the detecting device; In a protection device of a hard disk device configured to protect data, when a signal from the detection unit is generated during writing of data to the recording area by the head, the head is moved to a shipping zone. Evacuation means for evacuation of the data being written to the memory prior to the transfer, and confirmation means for confirming whether or not a signal is generated from the detection means at predetermined time intervals after the head is moved to the shipping zone. If the checking means does not check the generation of a signal from the detecting means within the predetermined time, To resume writing data in the recording area by the head, the protective device of a hard disk mounted apparatus, characterized by comprising reading means for reading the data saved by the saving means from the memory.