CN104239031A - Projector shutdown cooling method and projector shutdown cooling system - Google Patents
Projector shutdown cooling method and projector shutdown cooling system Download PDFInfo
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- CN104239031A CN104239031A CN201410353030.0A CN201410353030A CN104239031A CN 104239031 A CN104239031 A CN 104239031A CN 201410353030 A CN201410353030 A CN 201410353030A CN 104239031 A CN104239031 A CN 104239031A
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Abstract
The invention provides a projector shutdown cooling method and a projector shutdown cooling device. The method comprises the following steps: after receiving a projector shutdown instruction, acquiring a preset number of power-off time continuously stored recently; matching the preset number of power-off time with preset time span ranges and acquiring multiple time span ranges which are successfully matched; judging whether continuous and identical time span ranges exist among the multiple successfully-matched time span ranges, if yes, selecting a cooling mode corresponding to the continuous and identical time span ranges according to a preset cooling mode and time span range mapping relation so as to perform shutdown cooling treatment on a projector, if not, acquiring the occurrence frequency of each successfully-matched time span range, and selecting a cooling mode corresponding to the time span range with highest occurrence frequency according to the preset cooling mode and time span range mapping relation so as to perform cooling treatment on the projector. The method and the system can be used for prolonging the service life of the projector.
Description
Technical field
The present invention relates to radiating control field, particularly relate to a kind of projector shutdown cooling means and system.
Background technology
Can project to any direction because projector has, enough large picture advantage can be shown, be widely used in family, office, school and public place of entertainment.Projector generally uses high-pressure sodium lamp, and high-pressure sodium lamp has lot of advantages, and such as brightness is high, low price.But high-pressure mercury lantern festival releases a large amount of heats, the serviceable life of high-pressure sodium lamp and temperature relation are very large, in order to control the temperature of high-pressure sodium lamp well, needing cooling fan to carry out cooling processing to high-pressure sodium lamp, not so can have a strong impact on its serviceable life.
Under normal circumstances after projector's shutdown only otherwise pull out attaching plug, cooling fan also can continue to carry out radiating treatment to projector, and high-pressure sodium lamp is slowly cooled.A lot of user does not but know these, at once power-off or just close tester in power-down state (being generally in 10 seconds) in projector works on the very short time after projector's shutdown, during high-pressure sodium lamp work, temperature can reach 1000 degree, if can not cool in time after shutdown and not only can affect serviceable life, and the bulb of high temperature can make the component temperature around it raise, long-term even peripheral element can being burnt out like this causes projector to damage.Therefore after projector's shutdown, cooling fan needs to continue to carry out cooling processing to high-pressure sodium lamp.
Traditional projector's shutdown cooling means in projector, arranges multiple refrigerating mode choose for user, under each refrigerating mode, cooling fan has corresponding operating voltage and working time, the refrigerating mode that projector chooses according to user carries out cooling processing to high-pressure sodium lamp after projector's shutdown, but the refrigerating mode that user chooses is not necessarily entirely true, if the refrigerating mode that user chooses does not reach cooling effect to high-pressure sodium lamp after projector's shutdown, will seriously reduce the serviceable life of projector.
Summary of the invention
Based on this, be necessary for above-mentioned technical matters, provide a kind of can extend projector serviceable life projector's shutdown cooling means and system.
A kind of projector shutdown cooling means, described method comprises:
After receiving the shutdown command of projector, what obtain nearest Coutinuous store presets a power-off time;
A described power-off time of presetting is mated with predetermined time period scope respectively, obtains multiple time span scopes that the match is successful;
Judge whether there is consecutive identical time span scope in described multiple time span scopes that the match is successful, if, the refrigerating mode that then basis is default and the mapping relations of time span scope, the refrigerating mode choosing consecutive identical time span scope corresponding carries out shutdown cooling processing to described projector
If not, then obtain the number of times that each time span scope that the match is successful occurs, according to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing the maximum time span scope of occurrence number corresponding carries out cooling processing to described projector.
Wherein in an embodiment, described power-off time refers to and records described projector from shutting down the time experienced to power-off.
Wherein in an embodiment, after the shutdown command of described reception projector, before obtaining the step of a default power-off time of nearest Coutinuous store, described method also comprises:
From timing to stopping timing during, obtain a timing result at interval of the schedule time;
Store the last timing result obtained, the timing result of described last record is power-off time.
Wherein in an embodiment, described method also comprises:
After receiving the start-up command of projector, obtain the last power-off time stored in described projector;
Judge whether described power-off time is less than predetermined threshold value, if so, then display reminding information in the start-up picture of this projector, described information is used for that reminding user projector power-off time is too short will damage projector, if not, then described projector is normally opened according to described start-up command.
Wherein in an embodiment, described refrigerating mode comprises: normal mode, quick mode and at least one rapidly in pattern.
A kind of projector shutdown cooling system, described system comprises:
Very first time acquisition module, for receive projector shutdown command after, what obtain nearest Coutinuous store presets a power-off time;
Matching module, for being mated with predetermined time period scope respectively by a described power-off time of presetting, obtains multiple time span scopes that the match is successful;
Cooling processing module, for judging whether there is consecutive identical time span scope in described multiple time span scopes that the match is successful, if, the refrigerating mode that then basis is default and the mapping relations of time span scope, the refrigerating mode choosing consecutive identical time span scope corresponding carries out shutdown cooling processing to described projector, if not, then obtain the number of times that each time span scope that the match is successful occurs, according to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing the maximum time span scope of occurrence number corresponding carries out cooling processing to described projector.
Wherein in an embodiment, described power-off time refers to and records described projector from shutting down the time experienced to power-off.
Wherein in an embodiment, described system also comprises:
Timing result acquisition module, for from timing to stopping timing during, obtain a timing result at interval of the schedule time;
Timing result memory module, for storing the last timing result obtained, the timing result of described last record is power-off time.
Wherein in an embodiment, described system also comprises:
Second time-obtaining module, for receive projector start-up command after, obtain the last power-off time stored in described projector;
Information display module, for judging whether described power-off time is less than predetermined threshold value, if, then display reminding information in the start-up picture of this projector, described information is used for that reminding user projector power-off time is too short will damage projector, if not, then described projector is normally opened according to described start-up command.
Wherein in an embodiment, described refrigerating mode comprises: normal mode, quick mode and at least one rapidly in pattern.
Above-mentioned projector shutdown cooling means and system, the time span scope matched by the power-off time of the front projection machine of acquisition, the time span scope possible to the power-off time of this projector is predicted, according to the refrigerating mode preset and the mapping relations of time span scope, choose refrigerating mode corresponding to predicted time length range and shutdown cooling processing is carried out to projector.Compare traditional artificial selection projector shutdown refrigerating mode, this method and system are by predicting that the time span scope of this projector's power-off time chooses refrigerating mode automatically, avoid the error of artificial selection refrigerating mode to cause causing unnecessary harm to the high-pressure sodium lamp of projector, extend the serviceable life of projector.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of projector's shutdown cooling means in an embodiment;
Fig. 2 is the schematic flow sheet of projector's shutdown cooling means in another embodiment;
Fig. 3 is the structural representation of projector's shutdown cooling system in an embodiment;
Fig. 4 is the structural representation of projector's shutdown cooling system in another embodiment;
Fig. 5 is the structural representation of projector's shutdown cooling system in another embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, in one embodiment, a kind of projector shutdown cooling means provided, the method comprises:
Step 101, after receiving the shutdown command of projector, what obtain nearest Coutinuous store presets a power-off time.
In the present embodiment, power-off time refers to that projector is switched to the time of off-position from "on" position, power-off time can be projector's normal shutdown state is switched to off-position time from "on" position, also can be power-off time unexpected under projector under abnomal condition, such as, abnomal condition comprises mechanical disorder, has a power failure suddenly in use procedure.Concrete, power-off time refers to that record projector is from shutting down the time experienced to power-off.The each power-off time of projector all can be kept in the storer of projector according to time order and function order successively, after receiving the shutdown command that power-off button that user clicks projector produces, obtains nearest Coutinuous store in memory and presets a power-off time.
Step 102, mating presetting a power-off time with predetermined time period scope respectively, obtaining multiple time span scopes that the match is successful.
In the present embodiment, time span is divided into multiple interval, each interval is a time span scope, and power-off time can get the time span scope of mating with self in the time span scope preset.Such as, time span can be divided into T<20 second, 20 seconds≤T<40 second, 40 seconds≤T<60 second and T >=60 second four time span scopes.When being 10 seconds when power is off, the time span scope matched with 10 seconds is T<20 second; When being 30 seconds when power is off, the time span scope matched with 30 seconds is 20 seconds≤T<40 second.
Step 103, judges whether there is consecutive identical time span scope in multiple time span scopes that the match is successful.If so, then enter step 104, otherwise enter step 105.
Step 104, according to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing consecutive identical time span scope corresponding carries out shutdown cooling processing to projector.
Under refrigerating mode, the operating voltage larger working time is longer, and the refrigeration of cooling fan is better.But the noise that the larger cooling fan of operating voltage produces is also larger, and the working time, longer power consumption also can increase.The noise of projector can be reduced again simultaneously in order to reach optimal refrigeration and reduce power consumption, corresponding refrigerating mode can be chosen according to different power down condition shutdown cooling processing is carried out to projector.
In the present embodiment, in projector, set multiple refrigerating mode.Decide this projector by the historical record of the power-off time of projector to shut down the refrigerating mode that should choose.When the power-off time of the projector got from historical record is a normal time span scope, then choose the refrigerating mode of projector's acquiescence; The time within the scope of normal time span is less than when the power-off time of projector, the refrigerating mode then chosen should be the operating voltage under the operating voltage of cooling fan is greater than acquiescence refrigerating mode, and the working time guarantee that the working time is less than under acquiescence refrigerating mode carries out sufficient cooling processing to projector.
Set up the corresponding relation between refrigerating mode and time span scope in advance.Under each refrigerating mode, the cooling fan of projector has the corresponding operating voltage preset and the working time of presetting.From the historical record of power-off time storing projector, obtain to store recently and preset a power-off time, mate presetting a power-off time with time span scope, obtain after the match is successful and the time span scope presetting an equal number, the time span scope judging whether to exist in time span scope continuously two or more is identical, if, then the power-off time of the front projection machine of expression is often at the same time in length range, this time span scope may be that the shutdown custom of user causes, therefore, using refrigerating mode corresponding for this time span scope as the refrigerating mode under the shutdown of this projector.
Such as, if 5 of the Coutinuous store got power-off times, 5 power-off times time span scope that the match is successful successively obtains is followed successively by: second 20 seconds≤T<40 second, 40 seconds≤T<60, T>60, T<20 second and T<20 second, wherein there is the time span scope of continuous two T<20 seconds, then choose the refrigerating mode of T<20 correspondence second.
Step 105, obtains the number of times that each time span scope that the match is successful occurs, according to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing the maximum time span scope of occurrence number corresponding carries out cooling processing to projector.
In the present embodiment, if there is not consecutive identical time span scope, then obtain the number of times that in multiple time span scope, each time span scope occurs, using time span scopes maximum for occurrence number as the reference choosing refrigerating mode when choosing the shutdown of this projector.Power-off time due to this projector is probably be within the scope of the maximum time span of occurrence number, therefore chooses the refrigerating mode that this time span scope is corresponding.
Above-mentioned projector shutdown cooling means, the time span scope matched by the power-off time of the front projection machine of acquisition, the time span scope possible to the power-off time of this projector is predicted, according to the refrigerating mode preset and the mapping relations of time span scope, choose refrigerating mode corresponding to predicted time length range and shutdown cooling processing is carried out to projector.Compare traditional artificial selection projector shutdown refrigerating mode, this method is by predicting that the time span scope of this projector's power-off time chooses refrigerating mode automatically, avoid the error of artificial selection refrigerating mode to cause causing unnecessary harm to the high-pressure sodium lamp of projector, extend the serviceable life of projector.
Preferential, presetting a power-off time is a power-off time, and in the present embodiment, the projector's shutdown cooling means provided comprises: after receiving the shutdown command of projector, obtain the power-off time once stored recently; Power-off time is mated with predetermined time period scope, obtains the time span scope that the match is successful; According to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing the time span scope that the match is successful corresponding carries out cooling processing to projector.
In the present embodiment, because the refrigerating mode chosen after the shutdown of this projector only needs the power-off time with reference to the last projector, carry out length range match time according to the power-off time of the last time, choose refrigerating mode corresponding to this time span scope and cooling processing is carried out to projector.Therefore, decrease the computation process choosing refrigerating mode, what improve refrigerating mode chooses efficiency.
In another embodiment, receive the shutdown command of projector in step 101 after, before obtaining a default power-off time of nearest Coutinuous store, projector's shutdown cooling means also comprises:
From timing to stopping timing during, obtain a timing result at interval of the schedule time; Store the last timing result obtained, the timing result of last record is power-off time.
In the present embodiment, when the detecting device of projector detects that projector shuts down, riming instructions will be sent to timer, timer is started from scratch after receiving riming instructions timing, timing can be as accurate as millisecond, send once up-to-date timing result at interval of the schedule time to the controller of projector, preferential, the schedule time is 0.5 second.When detecting device detect projector power-off time, send halt instruction to timer, timer stops timing after receiving halt instruction at once, and final timing result is sent to controller.Conveniently timing next time, further, carries out clearing process to timer.Controller is preserved in memory in the timing result finally sended over by timer, and this timing result is power-off time.
In one embodiment, refrigerating mode includes but not limited to following at least one: normal mode, quick mode and pattern rapidly.
In the present embodiment, under each refrigerating mode, there are the corresponding operating voltage preset and the working time of presetting.Normal mode, quick mode and rapidly pattern in order its preset operating voltage increase progressively successively, preset working time successively decrease successively.Wherein, normal mode be projector acquiescence refrigerating mode, the magnitude of voltage that cooling fan is preset in the normal mode and the cooling effect of working time to high-pressure sodium lamp best, and when shutting down produce noise minimum.Cooling fan in fast mode preset voltage value is greater than the magnitude of voltage under normal mode, and the working time is less than the working time under normal mode, and the cooling effect under quick mode is better, and during shutdown, noise is higher.Cooling fan preset voltage value under pattern is rapidly greater than the preset voltage value under quick mode, and the working time is less than the working time under quick mode, and the cooling effect rapidly under pattern is poor, and during shutdown, noise is the highest.
Preferential, the operating voltage preset under normal mode is 6.5 volts, and the default working time is 90 seconds; The operating voltage preset under quick mode is 9 volts, and the default working time is 30 seconds; The operating voltage preset under pattern is rapidly 12 volts, and the default working time is 10 seconds.In one embodiment, corresponding under normal mode time span scope is T >=90 second; Time span scope corresponding under quick mode is 30 seconds≤T<90 second; Time span scope corresponding under pattern is rapidly 10 seconds≤T<30 second and T<10 second.
In one embodiment, as shown in Figure 2, a kind of projector shutdown cooling means provided is further comprising the steps of:
Step 202, after receiving the start-up command of projector, obtains the last power-off time stored in projector.
Step 204, judges whether power-off time is less than predetermined threshold value.If so, then step 206 is entered, display reminding information in the start-up picture of this projector.If not, then normally projector is opened according to start-up command.
If the long-term badly damaged projector of too short meeting of the power-off time of projector, in order to the damage of shutdown custom to projector preventing user bad, from storer, the last power-off time stored is obtained when each start, judge whether this power-off time is less than predetermined threshold value, if, then represent that the power-off time of last projector departs from the time span scope of normal power down too far, in the picture of start, show relevant information.This information is used for that reminding user projector power-off time is too short will damage projector.Such as, this information can be one section and be used for pointing out user to note the Word message of power-off time, also can be that one section of proper operation projector is from shutdown to the demonstration video of power-off.
Because information can the harm that causes projector of the incorrect power-off time of reminding user, serve the prevention effect preventing user from producing bad power-off custom.Ensure that user uses correct mode of operation to carry out the possibility of power-off to projector to greatest extent, decrease the infringement that bad power-off is accustomed to bringing to projector, extend the serviceable life of projector.
As shown in Figure 3, in one embodiment, a kind of projector shutdown cooling system provided, this system comprises:
Very first time acquisition module 31, for receive projector shutdown command after, what obtain nearest Coutinuous store presets a power-off time.
Concrete, power-off time refers to that record projector is from shutting down the time experienced to power-off.
Matching module 32, for mating presetting a power-off time with predetermined time period scope respectively, obtains multiple time span scopes that the match is successful.
Cooling processing module 33, for judging whether there is consecutive identical time span scope in the multiple time span scopes that the match is successful, if, the refrigerating mode that then basis is default and the mapping relations of time span scope, the refrigerating mode choosing consecutive identical time span scope corresponding carries out shutdown cooling processing to projector, if not, then obtain the number of times that each time span scope that the match is successful occurs, according to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing the maximum time span scope of occurrence number corresponding carries out cooling processing to projector.
In the present embodiment, cooling processing module 33 can be chosen corresponding refrigerating mode and carry out shutdown cooling processing to projector according to different power down condition.Multiple refrigerating mode is set in projector.Cooling processing module 33 decides this projector by the historical record of the power-off time of projector and to shut down the refrigerating mode that should choose.When the power-off time of the projector that cooling processing module 33 gets from historical record is a normal time span scope, then choose the refrigerating mode of projector's acquiescence; The time within the scope of normal time span is less than when the power-off time of projector, the refrigerating mode then chosen should be the operating voltage under the operating voltage of cooling fan is greater than acquiescence refrigerating mode, and the working time guarantee that the working time is less than under acquiescence refrigerating mode carries out sufficient cooling processing to projector.
Cooling processing module 33 sets up the corresponding relation between refrigerating mode and time span scope in advance.Under each refrigerating mode, the cooling fan of projector has the corresponding operating voltage preset and the working time of presetting.Cooling processing module 33 is from the historical record of power-off time storing projector, obtain to store recently and preset a power-off time, mate presetting a power-off time with time span scope, obtain after the match is successful and the time span scope presetting an equal number, the time span scope judging whether to exist in time span scope continuously two or more is identical, if, then the power-off time of the front projection machine of expression is often at the same time in length range, this time span scope may be that the shutdown custom of user causes, therefore, using refrigerating mode corresponding for this time span scope as the refrigerating mode under the shutdown of this projector.
If there is not consecutive identical time span scope, then cooling processing module 33 obtains the number of times that in multiple time span scope, each time span scope occurs, using time span scopes maximum for occurrence number as the reference choosing refrigerating mode when choosing the shutdown of this projector.
As shown in Figure 4, in one embodiment, a kind of projector shutdown cooling system provided also comprises:
Timing result acquisition module 34, for from timing to stopping timing during, obtain a timing result at interval of the schedule time.
Timing result memory module 35, for storing the last timing result obtained, the timing result of last record is power-off time.
As shown in Figure 5, in one embodiment, a kind of projector shutdown cooling system provided also comprises:
Second time-obtaining module 36, for receive projector start-up command after, obtain the last power-off time stored in projector;
Information display module 37, for judging whether power-off time is less than predetermined threshold value, if so, then display reminding information in the start-up picture of this projector, information is used for that reminding user projector power-off time is too short will damage projector.If not, then normally projector is opened according to start-up command.
In order to the damage of shutdown custom to projector preventing user bad, when each start, the second time-obtaining module 36 obtains the last power-off time stored from storer, judge whether this power-off time is less than predetermined threshold value, if, then represent that the power-off time of last projector departs from the time span scope of normal power down too far, information display module 37 for showing relevant information in the picture of start.This information is used for that reminding user projector power-off time is too short will damage projector.Such as, this information can be one section and be used for pointing out user to note the Word message of power-off time, also can be that one section of proper operation projector is from shutdown to the demonstration video of power-off.
In one embodiment, refrigerating mode includes but not limited to following at least one: normal mode, quick mode and pattern rapidly.
Above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. projector's shutdown cooling means, described method comprises:
After receiving the shutdown command of projector, what obtain nearest Coutinuous store presets a power-off time;
A described power-off time of presetting is mated with predetermined time period scope respectively, obtains multiple time span scopes that the match is successful;
Judge whether there is consecutive identical time span scope in described multiple time span scopes that the match is successful, if, the refrigerating mode that then basis is default and the mapping relations of time span scope, the refrigerating mode choosing consecutive identical time span scope corresponding carries out shutdown cooling processing to described projector
If not, then obtain the number of times that each time span scope that the match is successful occurs, according to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing the maximum time span scope of occurrence number corresponding carries out cooling processing to described projector.
2. method according to claim 1, is characterized in that, described power-off time refers to and records described projector from shutting down the time experienced to power-off.
3. method according to claim 1, is characterized in that, after the shutdown command of described reception projector, before obtaining the step of a default power-off time of nearest Coutinuous store, described method also comprises:
From timing to stopping timing during, obtain a timing result at interval of the schedule time;
Store the last timing result obtained, the timing result of described last record is power-off time.
4. method according to claim 1, is characterized in that, described method also comprises:
After receiving the start-up command of projector, obtain the last power-off time stored in described projector;
Judge whether described power-off time is less than predetermined threshold value, if so, then display reminding information in the start-up picture of this projector, described information is used for that reminding user projector power-off time is too short will damage projector, if not, then described projector is normally opened according to described start-up command.
5. the method according to any one of Claims 1-4, is characterized in that, described refrigerating mode comprises: normal mode, quick mode and at least one rapidly in pattern.
6. projector's shutdown cooling system, it is characterized in that, described system comprises:
Very first time acquisition module, for receive projector shutdown command after, what obtain nearest Coutinuous store presets a power-off time;
Matching module, for being mated with predetermined time period scope respectively by a described power-off time of presetting, obtains multiple time span scopes that the match is successful;
Cooling processing module, for judging whether there is consecutive identical time span scope in described multiple time span scopes that the match is successful, if, the refrigerating mode that then basis is default and the mapping relations of time span scope, the refrigerating mode choosing consecutive identical time span scope corresponding carries out shutdown cooling processing to described projector, if not, then obtain the number of times that each time span scope that the match is successful occurs, according to the refrigerating mode preset and the mapping relations of time span scope, the refrigerating mode choosing the maximum time span scope of occurrence number corresponding carries out cooling processing to described projector.
7. system according to claim 6, is characterized in that, described power-off time refers to and records described projector from shutting down the time experienced to power-off.
8. system according to claim 6, is characterized in that, described system also comprises:
Timing result acquisition module, for from timing to stopping timing during, obtain a timing result at interval of the schedule time;
Timing result memory module, for storing the last timing result obtained, the timing result of described last record is power-off time.
9. system according to claim 6, is characterized in that, described system also comprises:
Second time-obtaining module, for receive projector start-up command after, obtain the last power-off time stored in described projector;
Information display module, for judging whether described power-off time is less than predetermined threshold value, if, then display reminding information in the start-up picture of this projector, described information is used for that reminding user projector power-off time is too short will damage projector, if not, then described projector is normally opened according to described start-up command.
10. the system according to any one of claim 6 to 9, is characterized in that, described refrigerating mode comprises: normal mode, quick mode and at least one rapidly in pattern.
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| CN201410353030.0A CN104239031A (en) | 2014-07-23 | 2014-07-23 | Projector shutdown cooling method and projector shutdown cooling system |
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| CN201410353030.0A CN104239031A (en) | 2014-07-23 | 2014-07-23 | Projector shutdown cooling method and projector shutdown cooling system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080030689A1 (en) * | 2006-08-02 | 2008-02-07 | Coretronic Corporation | Method for shutting off projector |
| CN101625511A (en) * | 2008-07-07 | 2010-01-13 | 联想(北京)有限公司 | Projection equipment and control method thereof |
| CN103902398A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Server and fan fault protecting method thereof |
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2014
- 2014-07-23 CN CN201410353030.0A patent/CN104239031A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080030689A1 (en) * | 2006-08-02 | 2008-02-07 | Coretronic Corporation | Method for shutting off projector |
| CN101625511A (en) * | 2008-07-07 | 2010-01-13 | 联想(北京)有限公司 | Projection equipment and control method thereof |
| CN103902398A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Server and fan fault protecting method thereof |
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