CN106782619B - Mechanical hard disk and its control method - Google Patents
Mechanical hard disk and its control method Download PDFInfo
- Publication number
- CN106782619B CN106782619B CN201610994648.4A CN201610994648A CN106782619B CN 106782619 B CN106782619 B CN 106782619B CN 201610994648 A CN201610994648 A CN 201610994648A CN 106782619 B CN106782619 B CN 106782619B
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- Prior art keywords
- disk
- hard disk
- electromagnetic device
- mechanical hard
- magnetic head
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/024—Erasing
- G11B5/0245—Bulk erasing
Abstract
The present invention discloses a kind of mechanical hard disk, comprising: shell；It is set to multiple disk sheets, disk spindle, multiple magnetic heads, multiple magnetic head rocker arms, magnetic head rocker arm shaft and the multiple electromagnetic devices of interior of shell；It is set to the logic control circuit of interior of shell or outside；Each disk rocker arm side opposite with the storage face of disk sheet is provided at least one electromagnetic device, and electromagnetic device can generate magnetic field, in off position magnetic field disappearance in open state；Logic control circuit is connect with multiple electromagnetic devices respectively, and in mechanical hard disk operational process, logic control circuit opens electromagnetic device, carry out remagnetizing processing to disk sheet after receiving destruction data command.Mechanical hard disk disclosed by the invention quickly can thoroughly delete data, and Information Security is high.The invention also discloses the control methods for being applied to mechanical hard disk.
Description
Technical field
The invention belongs to store equipment technical field more particularly to mechanical hard disk and its control method.
Background technique
Mechanical hard disk is traditional storage equipment, is widely used.It is deleted currently, generalling use two kinds of processing modes
Except the data of mechanical hard disk storage.
The first processing mode: for the data for needing to delete in mechanical hard disk, description thereof file or file unit
Metadata modify or delete.It can realize that moment deletes data using this processing mode, but its defect is: mechanical hard
Data in the storage unit of disk are not wiped thoroughly, still can restore data by technological means, safety is lower.
Second of processing mode: for the data for needing to delete in mechanical hard disk, by magnetic head in the number where the data
According to area be written it is useless fill character, override original data using filling character, realize the thorough erasing of data.But
Data by the way of covering of filling character in complete deletion mechanical hard disk, processing speed is slower, when needing to expend longer
Between.
Therefore, the quick complete deletion for how realizing data in mechanical hard disk is that those skilled in the art are urgently to be resolved
Problem.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of mechanical hard disks for capableing of quick complete deletion data, and
Control method applied to the mechanical hard disk.
To achieve the above object, the invention provides the following technical scheme:
The present invention provides a kind of mechanical hard disk, comprising:
Shell；
The multiple disk sheets and disk spindle of the interior of shell are set to, the multiple disk sheet is installed on the disk
The different height of main shaft is parallel to each other between each disk sheet；
The multiple magnetic heads, multiple magnetic head rocker arms and magnetic head rocker arm shaft, each disk sheet for being set to the interior of shell are deposited
A magnetic head rocker arm is provided on the upside of storage face, the front end of each magnetic head rocker arm is equipped with a magnetic head, the multiple magnetic head
Rocker arm is installed on the magnetic head rocker arm shaft；
Multiple electromagnetic devices, each magnetic head rocker arm side opposite with the storage face of disk sheet are provided at least one electromagnetism
The bottom surface of the inside of device, the top surface of the inside of the shell and/or the shell is provided at least one electromagnetic device, setting
Heads contact on the electromagnetic device of the rocker arm, one end and the rocker arm, the other end extend to the edge of the disk sheet
Outside, the electromagnetic device open state can generate magnetic field, in off position magnetic field disappear；
It is set to the logic control circuit that is internal or external, connecting respectively with the multiple electromagnetic device of the shell,
In the mechanical hard disk operational process, the logic control circuit opens the electromagnetic device after receiving destruction data command
Part carries out the disc to remagnetize processing.
Preferably, in above-mentioned mechanical hard disk, the electromagnetic device is electromagnet.
The present invention also provides a kind of control methods, and applied to above-mentioned mechanical hard disk, the control method includes:
In the mechanical hard disk operational process, the logic control circuit of the mechanical hard disk receives destruction data command
Afterwards, the electromagnetic device in the mechanical hard disk is opened；
When meeting preset condition, the logic control circuit closes the electromagnetic device.
Preferably, in above-mentioned control method, the preset condition are as follows: when the unlatching of the electromagnetic device in the mechanical hard disk
Between reach preset duration.
Preferably, in above-mentioned control method, the preset condition are as follows: the logic control circuit receives out code.
It can be seen that the invention has the benefit that
Mechanical hard disk disclosed by the invention, each magnetic head rocker arm side opposite with the storage face of disk face be provided with to
A few electromagnetic device, and electromagnetic device can generate magnetic field, in off position magnetic field disappearance, mechanical hard disk in open state
In the process of running, when logic control circuit, which receives, destroys data command, electromagnetic device connected to it, electromagnetic device are opened
The magnetic field that part generates carries out each disk sheet to remagnetize processing, changes the Distribution of Magnetic Field of magnetisable material in mechanical hard disk, fastly
Data in speed and thoroughly deletion mechanical hard disk, Information Security are high.In addition, each electromagnetic device is all set in the interior of shell
Portion, and the distance between storage face of each electromagnetic device and disk sheet very little, can be to disk using lesser magnetic field
Piece carries out remagnetizing processing, therefore the requirement to magnetic field strength produced by electromagnetic device is lower.Moreover, opening electromagnetic device
During deleting data, the magnetic field that each electromagnetic device generates will not impact the storage medium in other equipment.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of mechanical hard disk disclosed by the invention；
Fig. 2 is the structural schematic diagram of another mechanical hard disk disclosed by the invention；
Fig. 3 is the structural schematic diagram of another mechanical hard disk disclosed by the invention；
Fig. 4 is the structural schematic diagram of another mechanical hard disk disclosed by the invention；
Fig. 5 is the flow chart of the control method disclosed by the invention applied to mechanical hard disk.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides the mechanical hard disk for capableing of quick complete deletion data, and the controlling party applied to the mechanical hard disk
Method.
Mechanical hard disk disclosed by the invention, comprising:
Shell；
The multiple disk sheets and disk spindle of interior of shell are set to, the difference that multiple disk sheets are installed on disk spindle is high
It spends, is parallel to each other between each disk sheet；
It is set to the multiple magnetic heads, multiple magnetic head rocker arms and magnetic head rocker arm shaft of interior of shell, the storage face of each disk sheet
Upside be provided with a magnetic head rocker arm, the front end of each magnetic head rocker arm is equipped with a magnetic head, multiple magnetic head rocker arms installations
In magnetic head rocker arm shaft；
Multiple electromagnetic devices, each magnetic head rocker arm side opposite with the storage face of disk sheet are provided at least one electromagnetism
Device, electromagnetic device can generate magnetic field, in off position magnetic field disappearance in open state；
It is set to the logic control circuit that is internal or external, connecting respectively with multiple electromagnetic devices of shell, mechanical hard disk
In operational process, logic control circuit opens electromagnetic device after receiving destruction data command, carries out magnetic again to disk sheet
Change processing.
Mechanical hard disk disclosed by the invention, each magnetic head rocker arm side opposite with the storage face of disk face be provided with to
A few electromagnetic device, and electromagnetic device can generate magnetic field, in off position magnetic field disappearance, mechanical hard disk in open state
In the process of running, when logic control circuit, which receives, destroys data command, electromagnetic device connected to it, electromagnetic device are opened
The magnetic field that part generates carries out each disk sheet to remagnetize processing, changes the Distribution of Magnetic Field of magnetisable material in mechanical hard disk, fastly
Data in speed and thoroughly deletion mechanical hard disk, Information Security are high.
In addition, each electromagnetic device is all set in the inside of shell, and the storage face of each electromagnetic device and disk sheet
The distance between very little, disk sheet can be carried out using lesser magnetic field to remagnetize processing, therefore to electromagnetic device institute
The requirement for generating magnetic field strength is lower.Moreover, during opening electromagnetic device deletion data, what each electromagnetic device generated
Magnetic field will not impact the storage medium in other equipment.
Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram of mechanical hard disk disclosed by the invention.The mechanical hard disk includes shell
1, disk sheet 21~26, disk spindle 3, magnetic head 41~46, magnetic head Rocker arm 5 1~56, magnetic head rocker arm shaft 6, electromagnetic device 71~76
With logic control circuit 8.
Wherein:
Shell 1 influences use and the equipment life of mechanical hard disk using enclosed construction to avoid there is dust entrance.
Disk sheet 21~26, disk spindle 3, magnetic head 41~46, magnetic head Rocker arm 5 1~56, magnetic head rocker arm shaft 6 and electromagnetism
Device 71~76 is all set in the inside of shell 1.Logic control circuit 8 is set to the outside of shell 1.
Disk sheet 21~26 is installed on the different height of disk spindle 3, and is parallel to each other between each disk sheet.In machine
In tool hard disk operational process, the high speed rotation under the drive of driving part of disk spindle 3, to drive 21~26 high speed of disk sheet
Rotation.
It is respectively arranged with a magnetic head rocker arm on the upside of the storage face of disk sheet 21~26, in the front end of each magnetic head rocker arm
It is mounted on a magnetic head, magnetic head Rocker arm 5 1~56 is installed on magnetic head rocker arm shaft 6.For the structure shown in Fig. 1, magnetic head rocker arm
51~56 are located at the upside in the storage face of disk 21~26, and in mechanical hard disk operational process, magnetic head 41~46 distinguishes energy
It is enough that the storage face of disk sheet 21~26 is written and read.
In addition, being provided at least one electromagnetic device in the side opposite with the storage face of disk sheet of magnetic head Rocker arm 5 1~56
Part.Electromagnetic device can generate magnetic field in open state, and magnetic field disappears in off position.
In Fig. 1: the side opposite with the storage face of disk sheet 21 of magnetic head Rocker arm 51 is (namely under magnetic head Rocker arm 51
Side) it is provided with electromagnetic device 71.The storage face of magnetic head Rocker arm 52 and disk sheet 22 opposite side (namely magnetic head Rocker arm 52
Downside) it is provided with electromagnetic device 72.Side (the namely magnetic head Rocker arm 53 opposite with the storage face of disk sheet 23 of magnetic head Rocker arm 53
Downside) be provided with electromagnetic device 73.Side (the namely magnetic head rocker arm opposite with the storage face of disk sheet 24 of magnetic head Rocker arm 54
54 downside) it is provided with electromagnetic device 74.(namely magnetic head shakes the side opposite with the storage face of disk sheet 25 of magnetic head Rocker arm 55
The downside of arm 55) it is provided with electromagnetic device 75.Side (the namely magnetic head opposite with the storage face of disk sheet 26 of magnetic head Rocker arm 56
The downside of rocker arm 76) it is provided with electromagnetic device 76.
Logic control circuit 8 is connect with electromagnetic device 71~76 respectively, in mechanical hard disk operational process, logic control circuit
8 after receiving destruction data command, open electromagnetic device 71~76, carry out remagnetizing processing to disk sheet 21~26.
Mechanical hard disk is the Distribution of Magnetic Field of magnetisable material on the storage face using disk sheet to record data, electromagnetic device 71
Magnetic field can be generated under~76 open states, in 21~26 rotary course of disk sheet, the magnetic field that electromagnetic device 71~76 generates changes
Become the Distribution of Magnetic Field of magnetisable material on the storage face of each disk sheet, that is, each disk sheet carried out to remagnetize processing,
To quickly and thoroughly delete the data in mechanical hard disk.
It should be noted that present invention mechanical hard disk shown in FIG. 1 includes 6 disk sheets, 6 magnetic head rocker arms, 6 magnetic heads
With 6 electromagnetic devices, but in specific implementation, it's not limited to that for the quantity of above-mentioned component in mechanical hard disk.In general, disk
The quantity of piece, magnetic head rocker arm and magnetic head is consistent, and the quantity of electromagnetic device is no less than the quantity of magnetic head rocker arm, that is,
It says, an electromagnetic device is at least arranged in each magnetic head rocker arm.
At least one electromagnetic device is set in the top surface of the inside of the shell of mechanical hard disk as a preferred implementation manner,
Part, in top surface, the electromagnetic device of setting is connect with logic control circuit.
Referring to fig. 2, Fig. 2 is the structural schematic diagram of another mechanical hard disk disclosed by the invention.
Compared with the mechanical hard disk shown in Fig. 1, in mechanical hard disk shown in Fig. 2, the top surface of the inside of shell 1 is provided with electricity
Magnetic device 77, the electromagnetic device 77 are connect with logic control circuit 8.In mechanical hard disk operational process, logic control circuit 8 is received
To after destroying data command, electromagnetic device 71~77 is opened, disk sheet 21~26 is carried out to remagnetize processing.
By the inside top surface in shell, one or more electromagnetic devices are set, it can be more quickly comprehensively to each magnetic
Disc carries out remagnetizing processing.
In implementation, electromagnetic device can be set close to the side of magnetic head rocker arm shaft 6 on the top surface inside shell 1, i.e., such as
Position shown in Fig. 2.Preferably, the side setting one on the top surface inside shell 1 far from magnetic head rocker arm shaft 6
A or multiple electromagnetic devices.
At least one electromagnetic device is set in the bottom surface of the inside of the shell of mechanical hard disk as a preferred implementation manner,
Part, in bottom surface, the electromagnetic device of setting is connect with logic control circuit.
Referring to Fig. 3, Fig. 3 is the structural schematic diagram of another mechanical hard disk disclosed by the invention.
Compared with the mechanical hard disk shown in Fig. 1, in mechanical hard disk shown in Fig. 3, the bottom surface of the inside of shell 1 is provided with electricity
Magnetic device 78, the electromagnetic device 78 are connect with logic control circuit 8.In mechanical hard disk operational process, logic control circuit 8 is received
To after destroying data command, electromagnetic device 71~76 and electromagnetic device 78 are opened, disk sheet 21~26 is remagnetized
Processing.
By the inner bottom surface in shell, one or more electromagnetic devices are set, it can be more quickly comprehensively to each magnetic
Disc carries out remagnetizing processing.
In implementation, electromagnetic device can be set close to the side of magnetic head rocker arm shaft 6 on the bottom surface inside shell 1, i.e., such as
Position shown in Fig. 3.Preferably, the side setting one on the bottom surface inside shell 1 far from magnetic head rocker arm shaft 6
A or multiple electromagnetic devices.
At least one is respectively set in the top and bottom of the inside of the shell of mechanical hard disk as a preferred implementation manner,
A electromagnetic device connected to the control circuit.
Referring to fig. 4, Fig. 4 is the structural schematic diagram of another mechanical hard disk disclosed by the invention.
Compared with the mechanical hard disk shown in Fig. 1, in mechanical hard disk shown in Fig. 4, in the top and bottom point of the inside of shell 1
Not She Zhi electromagnetic device 77 and 78, which connect with logic control circuit 8.In mechanical hard disk operational process,
After logic control circuit 8 receives destruction data command, electromagnetic device 71~78 is opened, magnetic again is carried out to disk sheet 21~26
Change processing.
It, can be more quickly comprehensive by the way that one or more electromagnetic devices are respectively set in the inside top surface of shell and bottom surface
Ground carries out each disk sheet to remagnetize processing.
In the present invention each mechanical hard disk disclosed above, electromagnetic device can use spiral winding.As preferred reality
Apply mode, in each mechanical hard disk disclosed above, electromagnetic device uses electromagnet.
It should be noted that logic control circuit 8 is all set in outer in the mechanical hard disk shown in Fig. 1 to Fig. 4 of the present invention
The outside of shell 1.But it's not limited to that for the installation site of logic control circuit 8, and in specific implementation, logic control circuit 8
It can be set in the inside of shell 1.For example, logic control circuit 8 is set to 1 inside of shell close to the space of top surface, or
Logic control circuit 8 is set to 1 inside of shell close to the space of bottom surface.
Invention additionally discloses a kind of control methods applied to above-mentioned mechanical hard disk, as shown in Figure 5, comprising:
Step S11: it in mechanical hard disk operational process, after logic control circuit receives destruction data command, opens mechanical
Electromagnetic device in hard disk；
Step S12: when meeting preset condition, logic control circuit closes electromagnetic device.
As an implementation, which is configured that the opening time of the electromagnetic device in mechanical hard disk reaches
Preset duration.That is, logic control circuit starts timing while opening the electromagnetic device in mechanical hard disk, work as clocking value
When reaching preset duration, electromagnetic device is closed.Based on the embodiment, mechanical hard disk complete paired data complete deletion it
Afterwards, it can be automatically closed electromagnetic device.
As an implementation, which is configured that logic control circuit receives out code.User can be with
Out code is inputted by man-machine interactive interface, closes electromagnetic device to trigger logic control circuit.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of mechanical hard disk characterized by comprising
Shell；
The multiple disk sheets and disk spindle of the interior of shell are set to, the multiple disk sheet is installed on the disk spindle
Different height, be parallel to each other between each disk sheet；
It is set to the multiple magnetic heads, multiple magnetic head rocker arms and magnetic head rocker arm shaft of the interior of shell, the storage face of each disk sheet
Upside be provided with a magnetic head rocker arm, the front end of each magnetic head rocker arm is equipped with a magnetic head, the multiple magnetic head rocker arm
It is installed on the magnetic head rocker arm shaft；
Multiple electromagnetic devices, each magnetic head rocker arm side opposite with the storage face of disk sheet are provided at least one electromagnetic device
The bottom surface of the inside of part, the top surface of the inside of the shell and/or the shell is provided at least one electromagnetic device, is set to
Heads contact on the electromagnetic device of the rocker arm, one end and the rocker arm, the other end extend to the edge of the disk sheet
Outside, the electromagnetic device can generate magnetic field, in off position magnetic field disappearance in open state；
It is set to the logic control circuit that is internal or external, connecting respectively with the multiple electromagnetic device of the shell, it is described
In mechanical hard disk operational process, the logic control circuit opens the electromagnetic device after receiving destruction data command, right
The disk sheet carries out remagnetizing processing.
2. mechanical hard disk according to claim 1, which is characterized in that the electromagnetic device is electromagnet.
3. a kind of control method, which is characterized in that be applied to mechanical hard disk as claimed in claim 1 or 2, the control method
Include:
In the mechanical hard disk operational process, after the logic control circuit of the mechanical hard disk receives destruction data command, open
Open the electromagnetic device in the mechanical hard disk；
When meeting preset condition, the logic control circuit closes the electromagnetic device.
4. control method according to claim 3, which is characterized in that the preset condition are as follows: in the mechanical hard disk
The opening time of electromagnetic device reaches preset duration.
5. control method according to claim 3, which is characterized in that the preset condition are as follows: the logic control circuit
Receive out code.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994648.4A CN106782619B (en) | 2016-11-11 | 2016-11-11 | Mechanical hard disk and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994648.4A CN106782619B (en) | 2016-11-11 | 2016-11-11 | Mechanical hard disk and its control method |
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| Publication Number | Publication Date |
|---|---|
| CN106782619A CN106782619A (en) | 2017-05-31 |
| CN106782619B true CN106782619B (en) | 2019-05-31 |
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ID=58973207
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610994648.4A Active CN106782619B (en) | 2016-11-11 | 2016-11-11 | Mechanical hard disk and its control method |
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| CN1897114A (en) * | 2005-07-15 | 2007-01-17 | 日立环球储存科技荷兰有限公司 | Data erasure apparatus and data erasure method |
| CN101506888A (en) * | 2006-06-14 | 2009-08-12 | 三星电子株式会社 | Head gimbals assembly of hard disk and method of assembling thereof |
| US7706102B1 (en) * | 2006-08-14 | 2010-04-27 | Lockheed Martin Corporation | Secure data storage |
| CN103310802A (en) * | 2013-05-14 | 2013-09-18 | 上海交通大学 | Secure destroying device for magnetic storage medium |
| CN103956172A (en) * | 2014-03-28 | 2014-07-30 | 华为技术有限公司 | Hard disk and hard disc demagnetizing method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4761896B2 (en) * | 2005-08-31 | 2011-08-31 | 東芝ストレージデバイス株式会社 | Data eraser |
-
2016
- 2016-11-11 CN CN201610994648.4A patent/CN106782619B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897114A (en) * | 2005-07-15 | 2007-01-17 | 日立环球储存科技荷兰有限公司 | Data erasure apparatus and data erasure method |
| CN101506888A (en) * | 2006-06-14 | 2009-08-12 | 三星电子株式会社 | Head gimbals assembly of hard disk and method of assembling thereof |
| US7706102B1 (en) * | 2006-08-14 | 2010-04-27 | Lockheed Martin Corporation | Secure data storage |
| CN103310802A (en) * | 2013-05-14 | 2013-09-18 | 上海交通大学 | Secure destroying device for magnetic storage medium |
| CN103956172A (en) * | 2014-03-28 | 2014-07-30 | 华为技术有限公司 | Hard disk and hard disc demagnetizing method and device |
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| Publication number | Publication date |
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| CN106782619A (en) | 2017-05-31 |
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