CN102279911A - Host system and vibration protecting method, vibrating mode judging circuit and method thereof - Google Patents
Host system and vibration protecting method, vibrating mode judging circuit and method thereof Download PDFInfo
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- CN102279911A CN102279911A CN2010102065680A CN201010206568A CN102279911A CN 102279911 A CN102279911 A CN 102279911A CN 2010102065680 A CN2010102065680 A CN 2010102065680A CN 201010206568 A CN201010206568 A CN 201010206568A CN 102279911 A CN102279911 A CN 102279911A
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Abstract
The invention discloses a host system and a vibration protecting method and a vibrating mode judging circuit and method thereof. The host system comprises a control module and a vibration protecting circuit. The vibration protecting circuit can judge the vibrating mode of a vibrating environment when judging that the host system is in a vibrating environment. The vibration protecting circuit determines whether to start a protection mechanism according to a user setting when judging that the vibrating mode of the vibrating environment is a periodical vibrating mode. Otherwise, the vibration protecting circuit starts the protection mechanism forcedly to protect the host system when judging that the vibrating mode of the vibrating environment is a random vibrating mode.
Description
Technical field
The invention relates to a kind of guard method of host computer system, and particularly relevant for a kind of vibration mode according to host computer system, and whether decision starts the guard method of the protection mechanism of host computer system.
Background technology
In some host computer systems, accelerometer can be installed at present, detect the gravity value of host computer system on the reference axes of coordinates in space.In some known host computer systems, when judging the detected gravity value change of accelerometer, judge that then host computer system works under the environment of vibration.At this moment, these known host computer systems can start a protection mechanism, and data access carry out in for example quiescing system, or reduce the speed of data access, protect the unlikely damage of data in the host computer system, can't operate to avoid host computer system.
Though known method can effectively be protected host computer system, yet can produce some blind spots.For example, when the residing vibration environment of host computer system is periodic vibration mode, in some cases still can normal operation.Yet in known method, as long as host computer system is operated in the environment work down of vibration, protection mechanism will be activated.Therefore, known mode can cause the task performance of host computer system to descend, and allows the user that many puzzlements take place.
Summary of the invention
Therefore, the invention provides a kind of host computer system, can under vibration environment, guarantee that the data in the host computer system can not damaged, and can improve treatment efficiency.
The present invention also provides a kind of decision circuitry and a kind of determination methods of vibration mode, can judge effectively whether a host computer system is operated under the vibration environment, and can judge the vibration mode of vibration environment.
The present invention more provides a kind of vibration protection method of host computer system, in the time of can working as host computer system and work under vibration mode, judges the vibration mode of vibration environment, and as the reference that whether starts protection mechanism.
The invention provides a kind of host computer system, comprise control module and vibration protection circuit.When vibration protection circuit judges host computer system is in vibration environment following time, then can judge the vibration mode of this vibration environment.When if the vibration mode of this vibration environment of vibration protection circuit judges is periodic vibration, then can set, and whether decision starts a protection mechanism according to a user.Relatively, if when vibration protection circuit judges vibration mode is random vibration, then can the force start protection mechanism, with the protection host computer system.
In one embodiment of this invention, control module comprises a storage device, and it is equipped with an operating system.When the vibration mode of the residing vibration environment of vibration protection circuit judges host computer system was the random vibration pattern, then quiescing system carried out the access of data to storage device.
From another viewpoint, the invention provides a kind of decision circuitry of vibration mode, comprise detecting unit, sampling unit, first comparer, cutting unit, second comparer and decision package.Detecting unit can detect the gravity value on the reference coordinate axle of a host computer system in a space, gives sampling unit and produce a gravity value signal.Therefore, sampling unit can be taken a sample to the gravity value signal, and obtains a plurality of sampling spots.In addition, whether first comparer then can compare each sampling spot and drop in the preset range, and produces a probability value set, and it has a plurality of probability values.At this moment, cutting unit can be divided into this probability value set a plurality of probability value subclass, and sends second comparer respectively to.And second comparer can be compared present received probability value subclass and adjacent probability value subclass, and the comparison data that produces is given decision package.Whereby, whether decision package can consistent according to the probability value in the probability value set, and judges whether host computer system is in a vibration environment, and when definite host computer system is in this vibration environment, judges the vibration mode of vibration environment according to the comparison data.
From another viewpoint; the present invention also provides a kind of vibration protection software of host computer system; comprise and carry out a sample procedure; to represent host computer system in the space during at least one gravity value signal with reference to the gravity value on the coordinate values receiving; this gravity value signal is taken a sample, and obtain a plurality of sampling spots.Then, carry out one first comparison program, relatively whether each sampling spot drops in the preset range exactly, and produces a probability value set, and it is made up of a plurality of probability values.In addition, carry out a segmentation procedure and one second comparison program, be divided into a plurality of probability value subclass so that this probability is gathered, and with the probability value in each probability value subclass, respectively with adjacent probability value subclass in the probability value compare, and produce a comparison data.Whether at this moment, carry out a defence program, be exactly according to the probability value in the probability value set unanimity and comparison data, and whether decision starts a protection mechanism, protects host computer system.
In first comparison program of one embodiment of the invention, when sampling spot wherein one when dropping in the preset range, then the probability value of Chan Shenging is 1.Relatively, and when another of sampling spot dropped on preset range outer, then producing the probability value was 0.
In addition, in defence program, whether be one to fall to falling state more, and whether decision start protection mechanism according to host computer system.
From another viewpoint, the present invention also provides a kind of determination methods of vibration mode, is applicable to a host computer system.Determination methods provided by the present invention comprises that detecting the gravity value with reference to axes of coordinates of host computer system in the space earlier changes, and produces a gravity value signal.Then, this gravity value signal is taken a sample, and obtain a plurality of sampling spots.At this moment, judge whether each those sampling spot falls within the preset range, and produce probability value set, and this probability value set is divided into a plurality of probability value subclass with a plurality of probability values.When if the probability value in the probability value set is inconsistent, judge that then host computer system is in a vibration environment.At this moment,, compare, to judge the vibration mode of the residing vibration environment of host computer system with probability value in the adjacent probability value subclass with the probability value in each probability value subclass.
In one embodiment of this invention, if judge the probability value in each probability value subclass, with the number of the two difference of probability value in the adjacent probability value subclass, during all less than a preset value, then judge the residing vibration environment of host computer system, be the periodic vibration pattern.On the contrary, if judge these probability value subclass wherein one in the probability value, with the number of the two difference of probability value in the adjacent probability value subclass, when arriving preset value, then judge host computer system be in period of vibration environment to small part, be the random vibration pattern.
Because the present invention can judge whether to start protection mechanism by the variation of analyzing gravity value.Therefore, the present invention can be lifted at the task performance under the vibration environment effectively under the situation of guaranteeing host computer system safety.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates and is the calcspar according to a kind of host computer system of a preferred embodiment of the present invention.
Fig. 2 A-Fig. 2 C illustrates the oscillogram into the gravity value signal under the different situations respectively.
Fig. 3 illustrates and is the system block diagrams according to a kind of decision-making module of a preferred embodiment of the present invention.
Fig. 4 A-Fig. 4 C illustrates the synoptic diagram of the program of different gravity value signals being carried out for decision-making module.
Fig. 5 illustrates and is the flow chart of steps according to the determination methods of a kind of vibration mode of a preferred embodiment of the present invention.
The main element symbol description:
100: host computer system
110: control module
112: storage device
114: operating system
120: the vibration protection circuit
122: detecting unit
124: decision package
302: sampling unit
304: the first comparers
306: cutting unit
308: the second comparers
310: decision package
402,404,406: sampling spot
A1: predeterminable area
COM: comparison data
PS: probability value set
PS ' [1:n]: probability value subclass
T
K: the gravity value signal
Embodiment
The spirit that the present invention is main is to be operated in vibration environment following time when host computer system, judges the vibration mode of this vibration environment.If the vibration mode of vibration environment is a periodic vibration, meeting then of the present invention determines whether starting protection mechanism according to user's setting, to avoid under unnecessary situation, reduces the task performance of host computer system.Yet if the vibration mode of vibration environment is the random vibration pattern, the present invention understands the force start protection mechanism, is not damaged to guarantee the data in the host computer system, makes that host computer system can't normal operation.
Fig. 1 illustrates and is the calcspar according to a kind of host computer system of a preferred embodiment of the present invention.Please refer to Fig. 1, the host computer system 100 that present embodiment provided comprises control module 110 and vibration protection circuit 120.Wherein, vibration protection circuit 120 couples control module 110, and it is used for judging whether host computer system 100 operates under a vibration environment.Be operated in vibration environment following time and judge host computer systems 100, then according to the vibration mode of vibration environment, determine whether control module 110 is started a protection mechanism, with protection host computer system 100 when vibration protection circuit 120.
In the present embodiment, host computer system 100 can be MP3 playing device, GPS, stocking system, computer system, server system, personal digital assistant device, pouch-type computer apparatus or device for mobile communication.
Fig. 2 A-Fig. 2 C illustrates the oscillogram into the gravity value signal under the different situations respectively.Gravity value signal T in these embodiments
K, can be the variation of representative perpendicular to the gravity value on the reference axes of coordinates of the reference planes at host computer system 100 places.Yet the present invention is not as limit.That wherein, Fig. 2 A is illustrated is the gravity value signal T that measures following of the environment of static state
KIn addition, Fig. 2 B and Fig. 2 C are illustrated, and are respectively detected gravity value signal T under the vibration environment of periodic vibration pattern and random vibration pattern
K
Fig. 3 illustrates and is the system block diagrams according to a kind of decision-making module of a preferred embodiment of the present invention.Please refer to Fig. 3, the decision-making module 124 that present embodiment provided can utilize hardware to realize, can certainly realize with the form of application software.In the present embodiment, decision-making module 124 comprises sampling unit 302, first comparer 304, cutting unit 306, second comparer 308 and decision package 310.Wherein, sampling unit 302 couples first comparer, 304, the first comparers 304 and then couples cutting unit 306.In addition, cutting unit 306 couples second comparer, 308, the second comparers 308 and then is coupled to decision package 310 jointly with first comparer 304.In addition, decision package 310 can with control module 110 lines.
Fig. 4 A-Fig. 4 C illustrates the synoptic diagram of the program of different gravity value signals being carried out for decision-making module.Please earlier with reference to Fig. 1, Fig. 3 and Fig. 4 A, as detecting unit 122 output gravity value signal T
KWhen giving decision-making module 124, sampling unit 302 can receive this gravity value signal T
K, and carry out a sample procedure, exactly gravity value signal T to being received
KTake a sample, and obtain a plurality of sampling spots, for example the sampling spot among Fig. 4 A 402,404 and 406.In the present embodiment, sampling unit 302 is every the 100ms sampling once.Yet this area has knows that usually the knowledgeable can be according to the needs of reality, and shortens the cycle of sampling, can't influence spirit of the present invention.
As 302 pairs of gravity value signals of sampling unit T
KAfter sampling finished, first comparer 304 can carry out one first comparison program, and relatively whether each sampling spot drops in the predeterminable area A1 exactly, and produced the probability value set PS that is made up of a plurality of probability values.In the present embodiment, judge that when first comparer 304 wherein a sampling spot drops in the predeterminable area A1, then can be produced as 0 probability value.Relatively, if first comparer 304 judges that another sampling spot drops on outside the predeterminable area A1, then Shu Chu probability value just is 1.
With Fig. 4 A is example, the gravity value signal T that it illustrates
K, be to represent host computer system 100 to be positioned at the environment of a static state.Therefore as can be seen from Figure 4A, all sampling spots all fall within the predeterminable area A1.Therefore, the probability value set PS that exported of first comparer 304
ABe [0,0,0,0,0,0,0,0,0,0].
Relatively, if host computer system 100 is positioned under the one-period property vibration environment, 302 pairs of gravity value signals of sampling unit T then
KThe result of sampling can be shown in Fig. 4 B.At this moment, after each sampling spot carries out first comparison program among 304 couples of Fig. 4 B of first comparer, the probability value set PS that is obtained
BWill be [0,0,0,0,0,0,0,0,0,1].
In addition, Fig. 4 C then illustrates for be operated in the following time of vibration environment of random vibration pattern when host computer system 100, to the gravity value signal T that is measured
KCarry out the synoptic diagram of sample procedure.After each sampling spot carries out first comparison program in 304 couples of Fig. 4 C of first comparer, the probability value set PS that is obtained
CWill be [0,1,1,0,1,1,0,1,0,0].
After first comparison program executes, cutting unit 306 can receive the probability value set PS that first comparer 304 is produced, and carry out a segmentation procedure, exactly probability value set PS is divided into a plurality of probability value subclass PS ' [1:n], wherein n is the integer greater than 1.With probability value set PS
ABe example, it can be divided into the first probability value subclass PS '
B[1]: [0,0,0,0,0] and the second probability value subclass PS '
B[2]: [0,0,0,0,1].Similarly, probability value set PS
CCan be split into the first probability value subclass PS '
C[1]: [0,1,1,0,1] and the second probability value subclass PS '
C[2]: [1,0,1,0,0].
Then, these probability value subclass PS ' [1:n] can be sent to second comparer 308, to carry out second comparison program.In second comparison program, the probability value in each probability value subclass, can with probability value in the adjacent probability value subclass relatively, and obtain a comparison data COM.With above-mentioned adjacent probability value subclass PS '
B[1] and PS '
B[2] be example, because the probability value in the said two devices has only the value of last probability value to differ from one another, so the comparison data COM that is obtained
BValue just be 1.Relatively, at probability value subclass PS '
C[1] and PS '
C[2] in, because the value of first probability value, second probability value and the 5th probability value differs from one another, therefore by probability value subclass PS '
C[1] and PS '
C[2] the comparison data COM that is produced
CValue will be 3.
Behind second comparer, 308 output comparison data COM, this comparison data COM can be sent to decision package 310.At this moment, decision package 310 is understood according to probability value set PS and comparison data, and carries out a defence program.
In more detail, after decision package 310 receives probability value set PS, can whether consistent according to the probability value in probability value set PS, whether under vibration environment, work to judge host computer system 100.With above-mentioned is example, because at probability value set PS
AIn the probability value be 0 all.Therefore, receive probability value set PS when decision package 310
AThe time, will judge that host computer system 100 is to work under the environment of static state, therefore do not start protection mechanism.
Relatively, receive probability value set PS when decision package 310
BAnd PS
CThe time, can find that probability value wherein is also inconsistent.Therefore, decision package 310 can judge that host computer system 100 is to work under vibration environment.At this moment, whether decision package 310 can arrive a preset value according to the value of comparison data COM, determines whether starting protection mechanism.
In the present embodiment, preset value can be set to 3.Therefore, receive comparison data COM when decision package 310
BThe time, can be because comparison data COM
BValue (being 1) do not arrive preset value, and judge that the vibration mode of the vibration environment at host computer system 100 places is periodic vibration patterns.At this moment, decision package 310 can determine whether starting protection mechanism and protect host computer system 100 according to user's setting.
Relatively, if decision package 310 is received comparison data COM
C, then can be because of comparison data COM
CValue reach preset value, and judge that the vibration mode of the vibration environment at host computer system 100 places is random vibration patterns.At this moment, decision package 310 can be protected host computer system 100 to control module 110 force start protection mechanisms, to avoid inner data damage.
In other embodiment, whether decision package 310 can be one to fall to falling state according to host computer system 100 also, and whether decision starts protection mechanism.
In addition, in the present embodiment, control module 110 has a storage device 112, for example is hard disk or storer, and it can install an operating system 114.When decision package 310 starts protection mechanisms, can make operating system 114 can't be accessed in data (for example read/write head of forbidden energy hard disk) in the storage device 112, perhaps make host computer system 100 enter the dormancy standby mode.In other embodiment, the protection mechanism that decision package 310 is started can also be forced host computer system 100 shutdown.Thus, just can protect data not to be damaged.
In addition, in the embodiment of some selections, decision package 310 can set according to the user, and decision starts or the forbidden energy protection mechanism when judging that host computer system 100 operates under the vibration environment of periodic vibration pattern.The other practice, decision package 310 also can be set according to the user, and reduces the speed of data access in 114 pairs of storage devices 112 of operating system, is not the data in total ban operating system 114 accessing storing devices 112.Thus, can protect data not to be damaged, can allow host computer system 100 keep running again.
Fig. 5 illustrates and is the flow chart of steps according to the determination methods of a kind of vibration mode of a preferred embodiment of the present invention.Please refer to Fig. 5, in the present embodiment, at first can judge that a host computer system at least one gravity value with reference to axes of coordinates in the space changes, and produce a gravity value signal as described in the step S502.Then, can be to this gravity value sample of signal, to obtain a plurality of sampling spots, just as described in the step S504.At this moment, as described in step S506, whether fall within the preset range according to each sampling spot, and produce a probability value set.Wherein, this probability value set is made up of a plurality of probability values.In addition, present embodiment can also carry out step S508, judges exactly whether the probability value in the probability value set is consistent.
If the probability value in the probability value set all is consistent (being exactly the "Yes" that step S508 is indicated), judge that then host computer system is to work under the environment of static state.Relatively, if in step S508, judge probability value and inconsistent (being exactly the "No" that step S508 is indicated) in the probability value set, then can carry out step S510, exactly the probability value set is divided into a plurality of probability value subclass, and as described in the step S512, with the probability value in each probability value subclass, compare with the probability value in the adjacent probability value subclass, and produce a comparison data.
Then, just as described in the step S514, whether the comparison data that determining step S512 is obtained arrives a preset value.If comparison data and no show one preset value (being exactly the "No" that step S514 is indicated) judge that then host computer system is to work under the vibration environment of periodic vibration pattern.Relatively, arrive above-mentioned preset value (being exactly the "Yes" that step S514 is indicated), judge that then host computer system is to work under the vibration environment of random vibration pattern if judge the comparison data.
In sum, owing to the present invention can compare the probability value in the adjacent probability value subclass, so the present invention can judge the vibration mode of the vibration environment at host computer system place.In addition, the present invention can be according to the difference of vibration mode, and whether decision starts protection mechanism.Therefore, the present invention can promote the task performance of host computer system effectively.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (14)
1. host computer system comprises:
One control module; And
One vibration protection circuit couples this control module, and in order to judging whether this host computer system is under the vibration environment,
Wherein be in this vibration environment following time when this this host computer system of vibration protection circuit judges, then judge the vibration mode of this vibration environment,
When this this vibration mode of vibration protection circuit judges is periodic vibration, then set, and whether decision starts a protection mechanism, avoids inside information to damage with the operation that changes the normal data access of this control module according to a user, and
When this this vibration mode of vibration protection circuit judges is random vibration, this protection mechanism of force start then.
2. host computer system as claimed in claim 1 is characterized in that, this vibration protection circuit comprises:
One detecting unit, it is at least one with reference to the gravity value on the axes of coordinates in a space to detect this host computer system respectively, and produces a gravity value signal; And
One decision-making module couples this detecting unit, and analyzes this gravity value signal, and to judge this vibration mode, this decision-making module more determines whether start this protection mechanism according to this vibration mode.
3. host computer system as claimed in claim 2 is characterized in that, this decision-making module comprises:
One sampling unit couples this detecting unit, with to this gravity value sample of signal, and obtains a plurality of sampling spots;
One first comparer couples this sampling unit, and relatively whether each those sampling spot drops in the preset range, and produces a probability value set, and it has a plurality of probability values;
One cutting unit couples this first comparer, this probability value set is divided into a plurality of probability value subclass;
One second comparer couples this cutting unit, compares to incite somebody to action present received probability value subclass and adjacent probability value subclass, and produces a comparison data; And
One decision package; couple this first comparer and this cutting unit; with whether consistent according to the probability value in this probability value set; and judge whether this host computer system is in this vibration environment; and when this host computer system is in this vibration environment, determine whether start this protection mechanism according to this comparison data.
4. host computer system as claimed in claim 1; it is characterized in that; this control module has a storage device; it is equipped with an operating system; and when this this vibration mode of vibration protection circuit judges is the random vibration pattern, then forbid this operating system to this storage device carry out data access, reduce this operating system to the speed of data access in this storage device, force this host computer system to enter the dormancy standby mode and force this host computer system shutdown one of them.
5. host computer system as claimed in claim 1, it is characterized in that this host computer system is MP3 playing device, GPS, stocking system, computer system, server system, personal digital assistant device, pouch-type computer apparatus or device for mobile communication.
6. the decision circuitry of a vibration mode comprises:
One detecting unit detects host computer system gravity value at least one reference coordinate axle in a space, and produces a gravity value signal;
One sampling unit couples this detecting unit, with to this gravity value sample of signal, and obtains a plurality of sampling spots;
One first comparer couples this sampling unit, and relatively whether each those sampling spot drops in the preset range, and produces a probability value set, and it has a plurality of probability values;
One cutting unit couples this first comparer, this probability value set is divided into a plurality of probability value subclass;
One second comparer couples this cutting unit, compares to incite somebody to action present received probability value subclass and adjacent probability value subclass, and produces a comparison data; And
One decision package, couple this first comparer and this cutting unit, with whether consistent according to the probability value in this probability value set, and judge whether this host computer system is in a vibration environment, and when definite this host computer system is in this vibration environment, judge the vibration mode of this vibration environment according to this comparison data.
7. the vibration protection method of a host computer system comprises the following steps:
Carry out a sample procedure, represent this host computer system in a space, during at least one gravity value signal with reference to the gravity value on the coordinate values, this gravity value signal to be taken a sample, and obtain a plurality of sampling spots when receiving;
Carry out one first comparison program, relatively whether each those sampling spot drops in the preset range, and produces a probability value set, and it has a plurality of probability values;
Carry out a segmentation procedure, this probability value set is divided into a plurality of probability value subclass;
Carry out one second comparison program, with the probability value in each probability value subclass, respectively with adjacent probability value subclass in the probability value compare, and produce a comparison data; And
Carry out a defence program, whether consistent and should the comparison data according to the probability in this probability value set, and whether decision starts a protection mechanism, changes the operation of the normal data access of this host computer system, damages to avoid inside information.
8. vibration protection method as claimed in claim 7 is characterized in that, in this first comparison program; when one of them drops in this preset range when those sampling spots; then the probability value of Chan Shenging is 1, and when another of those sampling spots dropped on outside this preset range, then the probability value of Chan Shenging was 0.
9. whether vibration protection method as claimed in claim 7 is characterized in that, in this defence program, be one to fall to falling state according to this host computer system more, and whether decision starts this protection mechanism.
10. vibration protection method as claimed in claim 7 is characterized in that, this defence program more comprises:
When the vibration mode of judging this host computer system is the periodic vibration pattern, then set, and whether decision makes this host computer system keep normal running according to a user; And
When the vibration mode of judging this host computer system is the random vibration pattern, then forbid this host computer system carry out the access of data, reduce data access in this host computer system speed, force this host computer system to enter the dormancy standby mode and force this host computer system shutdown one of them.
11. the determination methods of a vibration mode be applicable to a host computer system, and this determination methods comprises:
Detect this host computer system at least one gravity value in the space and change, and produce a gravity value signal with reference to axes of coordinates;
This gravity value signal is taken a sample, and obtain a plurality of sampling spots;
Judge whether each those sampling spot falls within the preset range, and produce a probability value set;
When the probability value in this probability value set is inconsistent, judge that then this host computer system is in a vibration environment;
This probability value set is divided into a plurality of probability value subclass; And
When judging that this host computer system is in this vibration environment,, compare with probability value in the adjacent probability value subclass, to judge the vibration mode of the residing vibration environment of this host computer system then with the probability value in each those probability value subclass.
12. determination methods as claimed in claim 11 is characterized in that, produces the step of those probability values, comprising:
When one of them dropped in this preset range when those sampling spots, then the probability value of Chan Shenging was 1; And
When another of those sampling spots dropped on outside this preset range, then the probability value of Chan Shenging was 0.
13. determination methods as claimed in claim 11 is characterized in that, with each those probability value subclass and adjacent probability value subclass step relatively, comprises the following steps:
Probability value in judging each those probability value subclass with the number of the two difference of probability value in the adjacent probability value subclass, during all less than a preset value, is then judged the residing vibration environment of this host computer system, is the periodic vibration pattern; And
When judging the probability value of those probability value subclass in one of them, number with the two difference of probability value in the adjacent probability value subclass, when arriving this preset value, then judge this host computer system be in period of this vibration environment to small part, be the random vibration pattern.
14. determination methods as claimed in claim 11 is characterized in that, this gravity value signal is pairing with reference to axes of coordinates, is the reference axes of coordinates of the reference planes at vertical this host computer system place.
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| CN1936760A (en) * | 2005-09-23 | 2007-03-28 | 广达电脑股份有限公司 | Portable computer and its safety protection method |
| CN101196845A (en) * | 2007-12-17 | 2008-06-11 | 山东超越数控电子有限公司 | Hard disk protection method |
| US20090049510A1 (en) * | 2007-08-15 | 2009-02-19 | Samsung Electronics Co., Ltd. | Securing stored content for trusted hosts and safe computing environments |
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| CN1767550A (en) * | 2004-10-29 | 2006-05-03 | 乐金电子(中国)研究开发中心有限公司 | Vibration motor detection apparatus and method for mobile communication terminal |
| CN1936760A (en) * | 2005-09-23 | 2007-03-28 | 广达电脑股份有限公司 | Portable computer and its safety protection method |
| US20090049510A1 (en) * | 2007-08-15 | 2009-02-19 | Samsung Electronics Co., Ltd. | Securing stored content for trusted hosts and safe computing environments |
| CN101196845A (en) * | 2007-12-17 | 2008-06-11 | 山东超越数控电子有限公司 | Hard disk protection method |
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