CN1900726A - Hard disc driver and its work pressure detecting method - Google Patents
Hard disc driver and its work pressure detecting method Download PDFInfo
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- CN1900726A CN1900726A CN 200510088303 CN200510088303A CN1900726A CN 1900726 A CN1900726 A CN 1900726A CN 200510088303 CN200510088303 CN 200510088303 CN 200510088303 A CN200510088303 A CN 200510088303A CN 1900726 A CN1900726 A CN 1900726A
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- disk drive
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- threshold voltage
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Abstract
The hard disk drive (HDD) includes voltage monitor, and controller. In whole working process of HDD, the voltage monitor monitors working voltage of HDD, and compares the working voltage of HDD with a guard against writing threshold voltage, and a stop working threshold voltage. When the working voltage is higher than the guard against writing threshold voltage, the controller sends out instruction to control HDD normal working right along. When the working voltage is lower than and equal to the guard against writing threshold voltage, and the working voltage is larger than the stop working threshold voltage, the controller sends out instruction to control HDD stopping write operation. When the working voltage is lower than or equal to both of guard against writing threshold voltage and the stop working threshold voltage, the controller sends out instruction to stop all operation of HDD. The technical scheme is safe and reliable.
Description
Technical field
The present invention relates to the design and the manufacturing field of electronic package, be specifically related to the monitoring method of hard disk drive and operating voltage thereof.
Background technology
Hard disk drive may cause the destruction of writing position data and lose under undervoltage condition.For example, miniature hard-drive is generally used for using the portable equipment of battery, and the electric current that this hard disk drive relies on battery usually to be provided is operated.And, generally commonly use the operating voltage of monitoring this hard disk drive such as the holding circuit of " monitoring dog ".This holding circuit can be arranged in the described hard disk drive, in the described portable equipment or part is located at this hard disk drive and part is located in this portable equipment.When using battery; electric quantity consumption along with battery; when its operating voltage drops to or be lower than certain under-voltage threshold; this holding circuit will stop the normal running of hard disk drive; and carry out the hard disk drive reset operation, make the electronics of this hard disk drive and mechanical part reset to " safe mode ".If this situation occurs in the write operation process of driver, because reset operation makes driver not report this mistake to main frame, the position that writes is with destroyed, and data also will be lost.Especially when operating voltage during near under-voltage threshold, jumping the current consumption that increases because of write operation is enough to make operating voltage to drop to suddenly usually or is lower than under-voltage threshold, causes Down Drive in the write operation process, thereby causes losing and/or destroying of data.As a result, use losing and/or destroying of data often arranged in the hard disk drive of traditional protection circuit.
Based on above explanation, need the device or the method that address the above problem in the art.
Summary of the invention
The objective of the invention is to: at the defective that exists in the above-mentioned prior art, provide the monitoring method of a kind of safe and reliable hard disk drive and operating voltage thereof, write losing of data or destroy with minimizing.
Technical scheme of the present invention is a kind of hard disk drive, and this hard disk drive comprises: (a) reference voltage source, this reference voltage source provide an anti-threshold voltage of writing; (b) comparer, the operating voltage of the more described hard disk drive of this comparer and the described anti-threshold voltage of writing; And (c) controller, to be less than or equal to described anti-ly when writing threshold voltage when described operating voltage, described controller sends instruction, prevents the write operation of described hard disk drive, and makes described hard disk drive continue other operation.
According to one or more embodiment of the present invention, when described operating voltage is less than or equal to the described anti-threshold voltage of writing, and when described operating voltage quits work threshold voltage greater than one, described controller sends instruction, prevent the write operation of described hard disk drive, and make described hard disk drive continue other operation.And, be less than or equal to when described operating voltage and describedly anti-write threshold voltage, and described operating voltage to be less than or equal to one when quitting work threshold voltage, controller sends all operations that instruction stops described hard disk drive.Because before hard disk drive stops all operations, prevented write operation, write losing or destroying of data so can reduce.
Description of drawings
Fig. 1 is the electronic equipment block diagram that comprises the hard disk drive voltage monitor provided by the invention.
Fig. 2 carries out the process flow diagram of the method for voltage monitoring for adopting apparatus of the present invention.
Fig. 3 is the structural representation that voltage monitor is realized with hardware mode in the hard disk drive shown in Figure 1.
The structural representation that Fig. 4 realizes with software and firmware mode for voltage monitor in the hard disk drive shown in Figure 1.
The structural representation that Fig. 5 realizes with hardware, software and firmware mode for voltage monitor in the hard disk drive shown in Figure 1.
Embodiment
Be illustrated in figure 1 as a preferred embodiment of the present invention, a kind of electronic equipment that comprises hard disk drive and voltage monitor, this electronic equipment comprise main frame 101, hard disk drive 100, and main frame 101 is connected by main frame interface 11 with hard disk drive 100.The power supply of hard disk drive 100 provides by being located at the battery (not shown) that is connected with power bus 13 in the main frame 101, and power supply is supplied with main frame interface 11, controller 12, voltage monitor 10, electricity-machine controller 14 and read-write channel 15 by power bus 13.The read/write operation of disc is undertaken by the cephali disc assembly 16 that is located in the hard disk drive 100.
As shown in Figure 1, the read/write instruction that cephali disc assembly 16 receives from read/write channel 15, and transmit data and give read/write channel 15, and receive data by read/write channel 15.Cephali disc assembly 16 also receives instructing about other electronics of head stack and mechanically actuated from electricity-machine controller 14.Instruction and data load mode between controller 12, read/write channel 15 and the electricity-machine controller 14 can adopt this area any method known to realize.Read/write channel 15 and electricity-machine controller 14 can be this area general technology or element.
Be illustrated in figure 2 as and adopt the present invention to carry out the process flow diagram of voltage monitoring, it comprises the steps:
Step 21 (with reference to figure 2), controller 12 (with reference to figure 1) is given in the instruction that main frame 101 (with reference to figure 1) is started working by interface 11 transmission one hard disk drives 100 (with reference to figure 1).Controller 12 responses to begin to send instruction, enter step 22;
Step 22 (with reference to figure 2): when hard disk drive 100 work, voltage monitor 10 (with reference to figure 1) carries out following work: the operating voltage that is provided by power bus 13 (with reference to figure 1) A) is provided;
B) this operating voltage is write threshold voltage and compared with anti-, and produce first fiducial value;
C) this operating voltage and the threshold voltage that quits work are compared, and produce second fiducial value;
D) first, second fiducial value is reported to controller 12.
The threshold voltage that quits work is that whether decision hard disk drive 100 quits work, a critical voltage value of the horizontal reset of going forward side by side.The size of threshold voltage of quitting work can be known by known any current techique.Prevent that writing threshold voltage will fully be higher than the threshold voltage that quits work, when causing that owing to hard disk drive 100 write operations operating voltage reduces, can not cause hard disk drive 100 to carry out reset operations with assurance.Because carry out in the write operation process, will cause corrupted data when carrying out reset operation or lose at hard disk drive 100.So, must be with the sufficiently high anti-safety that threshold voltage guarantees to write data of writing.But, for fear of producing unnecessary interruption when hard disk drive 100 write operations, anti-write threshold voltage can not be too high.The anti-gate voltage value of writing can obtain by known any method, such as but not limited to the mathematical model optimizing analysis.
Step 23 (with reference to figure 2): first fiducial value that controller 12 provides according to voltage monitor 10 does not change the operation of hard disk drive 100 when determining.If operating voltage is greater than the anti-threshold voltage of writing, control changes step 24 over to.If operating voltage is less than or equal to the anti-threshold voltage of writing, control changes step 25 over to.
Step 24 (with reference to figure 2): hard disk drive 100 continues operate as normal.Control and go back to step 22, in this step 22, voltage monitor continues to carry out monitoring, compares, reaches report.
Step 25 (with reference to figure 2): second fiducial value that controller 12 provides according to voltage monitor 10 determines whether to change the action of hard disk drive 100.If operating voltage greater than the threshold voltage that quits work, enters step 26,, enter step 27 if operating voltage is less than or equal to the threshold voltage that quits work.
Step 26 (with reference to figure 2): controller 12 sends instruction for read/write channel 15, prevent any write operation, but other operation is carried out normally.And carry out step 22, voltage monitor 10 continues monitoring, compares, reaches report.
Step 27 (with reference to figure 2), controller 12 order hard disk drives 100 stop all operations, and make hard disk drive 100 be reset to safe mode.Stop all operations (comprising the operation of controller) of hard disk drive 100, send sign on again up to main frame 101 and open work again.
The structure of the voltage monitor 10 that is adopted in the embodiments of the invention can be realized by following several modes: (A) hardware; (B) software and firmware; Or (C) hardware, software and firmware.In addition, voltage monitor 10 also can be customized and be included in the driver chip.
As shown in Figure 3, the voltage monitor in the hard disk drive 100 10 is realized by hardware.Voltage monitor 10 comprises a reference voltage source 33, first comparer 31 and second comparer 32.Reference voltage source 33 is used to provide anti-and writes the input signal of threshold voltage as first comparer 31, and the input signal of threshold voltage as second comparer 32 that quit work is provided.According to one or more embodiment of the present invention, operating voltage is in entire work process, always by 10 monitorings of voltage prison prison device and write threshold voltage and the threshold voltage that quits work compares by comparer 31,32 with anti-respectively.But, in order effectively to utilize controller 12, the step 23 of method shown in Figure 2 can limit the use of before write operation.
As shown in Figure 4, the voltage monitor 10 of hard disk drive 100 shown in Figure 1 is realized that by software and firmware voltage monitor 10 comprises an analog to digital converter (ADC) 40.When analog to digital converter 40 slave controllers 12 are received command adapted thereto, respectively operating voltage is write threshold voltage or the threshold voltage that quits work compares with anti-; Described compare operation is the instruction of response controller 12, rather than carries out continuously.In addition, the function of analog to digital converter 40 can be carried out with other chip of controller 12 or hard disk drive 100, also can be carried out by main frame 101.In an embodiment of the present invention, the firmware of controller 12 inquiry analog to digital converter 40 is to provide suitable comparative result by analog to digital converter 40.
As shown in Figure 5, the voltage monitor 10 of the hard disk drive shown in Fig. 1 100 is realized by software, firmware and hardware.Described voltage monitor 10 comprises reference voltage source 33, comparer 32 and analog to digital converter (ADC) 40.Reference voltage source 33 is used to provide the threshold voltage input signal of device 32 as a comparison that quits work.Comparer 32 is monitoring voltage constantly, and continuously the operating voltage and the threshold voltage that quits work are compared.And analog to digital converter 40 is when receiving the instruction of controller 12, and operating voltage is write threshold voltage and compared with anti-, and the action of this comparison is discontinuous.The function of above-mentioned analog to digital converter 40 also can be directly by controller 12, or other chip of hard disk drive 100 realizes, is perhaps realized by main frame 101.
Adopt voltage monitor of the present invention and method, when voltage failure or deficiency occurring, it can avoid loss of data or damage, so write operation is reliable.
The above embodiment of the present invention is a usefulness for example.Above embodiment can have many variations and modification, and does not still go out scope of the present invention.The decision of scope of the present invention should be only with reference to the foregoing description, and must be with reference to all claims yet, with and the four corner of equal notion.
Claims (6)
1, a kind of work pressure detecting method of hard disk drive: comprise the operating voltage of monitoring described hard disk drive; It is characterized in that: when the operating voltage of described hard disk drive power supply be less than or equal to one anti-when writing gate voltage, stop the write operation of described hard disk drive, and continue other action of described hard disk drive.
2, the method for work of hard disk drive as claimed in claim 1 is characterized in that, and comprises when described operating voltage and be less than or equal to one when quitting work threshold voltage, stops a plurality of operations of described hard disk drive.
3, the method for work of hard disk drive as claimed in claim 2 is characterized in that, the described threshold voltage that quits work is lower than the anti-threshold voltage of writing.
4, require the method for work of 1 described hard disk drive as power, it is characterized in that, the power supply of described hard disk drive is provided by one or more batteries.
5, a kind of hard disk drive comprises reference voltage source, comparer and controller, it is characterized in that: this reference voltage source is used to provide the anti-threshold voltage of writing; This comparer is used for the operating voltage of described hard disk drive and should anti-writes threshold voltage and make comparisons; And this is anti-when writing threshold voltage when the operating voltage of described hard disk drive is equal to or less than, and described controller sends instruction and stops the write operation of described hard disk drive, and other operations that continue described hard disk drive.
6, a kind of hard disk drive comprises a voltage monitor and a controller, and this voltage monitor is monitored the operating voltage of described hard disk drive in the described hard disk drive course of work, and more described operating voltage and the threshold voltage that quits work; It is characterized in that: the operating voltage of this voltage monitor and more described hard disk drive and the anti-threshold voltage of writing; When described operating voltage is higher than described anti-ly when writing threshold voltage, instruction is sent in described controller control, controls described hard disk drive and works on; Be less than or equal to when described operating voltage and describedly anti-write threshold voltage, and described operating voltage quits work during threshold voltage greater than described, described controller sends instruction, controls described hard disk drive and stops write operation; Be less than or equal to when described operating voltage and describedly anti-write threshold voltage, and described operating voltage is less than or equal to described quitting work during threshold voltage, described controller sends a plurality of work that instruction stops described hard disk drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510088303 CN1900726A (en) | 2005-07-22 | 2005-07-22 | Hard disc driver and its work pressure detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510088303 CN1900726A (en) | 2005-07-22 | 2005-07-22 | Hard disc driver and its work pressure detecting method |
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| Publication Number | Publication Date |
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| CN1900726A true CN1900726A (en) | 2007-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510088303 Pending CN1900726A (en) | 2005-07-22 | 2005-07-22 | Hard disc driver and its work pressure detecting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077735A (en) * | 2011-10-25 | 2013-05-01 | 鸿富锦精密工业（深圳）有限公司 | Power supply protection circuit for hard disk |
| CN116048233A (en) * | 2023-03-13 | 2023-05-02 | 苏州浪潮智能科技有限公司 | Power architecture, power monitoring method and device |
-
2005
- 2005-07-22 CN CN 200510088303 patent/CN1900726A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077735A (en) * | 2011-10-25 | 2013-05-01 | 鸿富锦精密工业（深圳）有限公司 | Power supply protection circuit for hard disk |
| CN116048233A (en) * | 2023-03-13 | 2023-05-02 | 苏州浪潮智能科技有限公司 | Power architecture, power monitoring method and device |
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