CN106993173B - A kind of micro- correction triggering method and micro- throwing equipment for throwing equipment - Google Patents
A kind of micro- correction triggering method and micro- throwing equipment for throwing equipment Download PDFInfo
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- CN106993173B CN106993173B CN201710224580.6A CN201710224580A CN106993173B CN 106993173 B CN106993173 B CN 106993173B CN 201710224580 A CN201710224580 A CN 201710224580A CN 106993173 B CN106993173 B CN 106993173B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/317—Convergence or focusing systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- Adjustment Of Camera Lenses (AREA)
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Abstract
This application discloses a kind of micro- correction triggering methods and micro- throwing equipment for throwing equipment, which comprises obtains the acceleration information of acceleration transducer acquisition；The acceleration information of current acceleration data and last acquisition is subjected to differential filtering, obtains level-one filtering data；The data for being higher than default cutoff frequency in the level-one filtering data are filtered out, secondary filter data are obtained；If current secondary filter data are more than preset threshold relative to the difference of a upper secondary filter data；Or, if triggering auto-focusing or picture zero offset capability when current secondary filter data are more than default change rate relative to the change rate of a upper secondary filter data.The application effectively prevent the false triggering of auto-focusing, picture zero offset capability caused by the abnormal operations such as the improper operation of machine vibration, user, it is ensured that the normal use of these functions.
Description
Technical field
This application involves micro- throwing equipment auto-focusing and field is automatically corrected, more particularly to a kind of micro- correction touching for throwing equipment
Forwarding method and micro- throwing equipment.
Background technique
Micro- throwing equipment is a kind of portable translucent equipment, user can whenever and wherever possible using micro- throwings equipment watch video,
Demonstrate PPT etc..Micro- throwing equipment is often used in different places, therefore, is often changed using position due to its portability,
When each change using position, micro- equipment of throwing is required to focus and correct the picture of output again, therefore, in order to promote micro- throwing
The drop shadow effect of equipment needs to introduce the function that auto-focusing and picture automatically correct in micro- throwing equipment.
Fig. 1 is the micro- throwing device systems structural schematic diagram of one kind that the prior art provides, as shown in Figure 1, micro- throwing equipment includes
Master control borad 1, acceleration transducer 2, drive circuit assembly 3 and lens assembly 4, wherein acceleration transducer 2 and master control borad 1
Electrical connection, drive circuit assembly 3 are electrically connected with master control borad 1 and lens assembly 4 respectively.Master control borad 1 is real from acceleration transducer 2
When obtain three axis initial data, and three axis initial data are converted into angular velocity data, by the variation of angular velocity data, sentenced
Whether micro- throwing equipment of breaking is subjected to displacement, wherein three axis initial data refer to the triaxial coordinate that foundation is put centered on micro- throwing equipment
In system, corresponding acceleration information in X, Y and Z-direction.When micro- throwing equipment is by normal movement and when change in location, master control
Plate 1 triggers auto-focusing or picture zero offset capability, and control drive circuit assembly 3 works, and drives mirror by drive circuit assembly 3
The video pictures of 4 pairs of head assembly output carry out auto-focusing or automatically correct, to promote micro- drop shadow effect for throwing equipment.
But under certain special screnes, such as when it is micro- throw equipment sound is excessive, user's misoperation when, master control borad 1
The three axis initial data got deviate, and master control borad 1 can also trigger auto-focusing or picture zero offset capability at this time.But
The auto-focusing or Picture Calibration for throwing equipment triggering micro- at this time, is a kind of improper operation, it is believed that it is a kind of false triggering,
Therefore how to prevent the micro- auto-focusing for throwing equipment of false triggering or picture zero offset capability from becoming urgent problem to be solved.
Summary of the invention
This application provides a kind of micro- throwing equipment calibration triggering method and micro- throwing equipment, to solve micro- sound mistake for throwing equipment
Greatly, the high-frequency noise that the abnormal operations such as user's operation generate, causes micro- throwing equipment frequently to trigger auto-focusing or picture certainly
The problem of dynamic correction.
In a first aspect, this application provides a kind of micro- correction triggering methods for throwing equipment, comprising:
Obtain the acceleration information of acceleration transducer acquisition；
The acceleration information of current acceleration data and last acquisition is subjected to differential filtering, obtains first-level filtering wave number
According to；
The data for being higher than default cutoff frequency in the level-one filtering data are filtered out, secondary filter data are obtained；
If current secondary filter data are more than preset threshold relative to the difference of a upper secondary filter data；Or,
If current secondary filter data are more than default change rate relative to the change rate of a upper secondary filter data, triggering is certainly
Dynamic focusing or picture zero offset capability.
Second aspect, present invention also provides a kind of micro- throwing equipment, comprising: master control borad, acceleration transducer, driving circuit
Component and lens assembly, in which:
The master control borad includes processor, memory and A/D conversion module, the A/D conversion module and the processor
Connection, the A/D conversion module connect with the acceleration transducer, the drive circuit assembly respectively with the processor and
Lens assembly connection；
The memory, for storing program code；
The processor for reading the program code stored in the memory, and executes side described in first aspect
Method.
The third aspect, present invention also provides a kind of micro- throwing equipment characterized by comprising master control borad, filter circuit group
Part, acceleration transducer, drive circuit assembly and lens assembly, in which:
The master control borad includes processor, memory and A/D conversion module, the A/D conversion module and the processor
Connection, the filter circuit component are connect with the A/D conversion module and acceleration transducer respectively, the drive circuit assembly
It is connect respectively with the processor and lens assembly；
The memory, for storing program code；
The processor for reading the program code stored in the memory, and executes as described in relation to the first aspect
Method.
In micro- throwing equipment calibration triggering method disclosed in the present application and micro- throwing equipment, it is poor that the acceleration information of acquisition is carried out
Value filtering processing and low-pass filtering treatment filter out the high-frequency noise as caused by the abnormal operations such as machine vibration, user's improper operation,
The false triggering that the auto-focusing due to caused by abnormal operation or picture automatically correct is reduced, solves frequently triggering auto-focusing
Or picture the problem of automatically correcting, meanwhile, improve the precision of triggering judgement, it is ensured that micro- throwing equipment auto-focusing and the automatic school of picture
The normal use of orthofunction.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the micro- throwing device systems structural schematic diagram of one kind that the prior art provides；
Fig. 2 is one flow diagram of embodiment provided by the present application；
Fig. 3 is step S104 flow diagram provided by the present application；
Fig. 4 is two flow diagram of embodiment provided by the present application；
Fig. 5 is step S204 flow diagram provided by the present application；
Fig. 6 is three flow diagram of embodiment provided by the present application；
Fig. 7 is a kind of micro- throwing device structure schematic diagram provided by the present application；
Fig. 8 is the micro- throwing device structure schematic diagram of another kind provided by the present application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Micro- throwing equipment often needs to shift position as a kind of portable translucent equipment in use, is artificially moving
In dynamic process, needs micro- throwing equipment auto-focusing or automatically correct picture, and it is automatic that triggering is not needed in abnormal operation
Focusing or picture zero offset capability.
Embodiment one
A kind of micro- correction triggering method and device for throwing equipment is disclosed in the embodiment of the present application, is the application referring to fig. 2
One flow diagram of embodiment of offer.
In step s101, the acceleration information of acceleration transducer acquisition is obtained.
Acceleration transducer or digital acceleration sensor are set in micro- throwing equipment, when micro- throwing equipment occurs mobile,
Master chip obtains the acceleration information of acceleration transducer acquisition, and acceleration information herein refers to the original of acceleration transducer acquisition
Starting acceleration data.When micro- throwing equipment is subjected to displacement, acceleration transducer can sense the case where micro- throwing equipment is subjected to displacement,
And micro- throwing equipment is subjected to displacement in which direction.
In step s 102, the acceleration information of current acceleration data and last acquisition is subjected to differential filtering, obtained
To level-one filtering data.
In the prior art, the acceleration information of acceleration transducer acquisition is obtained in real time, and is judged according to acceleration information
Whether micro- throwing equipment is subjected to displacement, and therefore, no matter micro- throwing equipment is by normal movement or improper movement, as long as judging micro-
It throws equipment to be subjected to displacement, can trigger auto-focusing or picture zero offset capability.
In the present embodiment, after the acceleration information for getting sensor acquisition, level-one filtering processing is first passed around, is filtered out
Burr, spiking data filter out burr, spiking data using differential filtering method in the present embodiment.
In step s 103, the data for being higher than default cutoff frequency in level-one filtering data are filtered out, secondary filter number is obtained
According to.
Filter out burr in raw acceleration data, after spiking data, by level-one filtering data due to improper behaviour
Make the noise-filtering generated, reduces when determining whether that triggering auto-focusing or picture automatically correct according to filtering data, due to
The interference for the noise that abnormal operation generates.But in the present embodiment, judge that noise is that normal operating or abnormal operation produce
Raw, it needs to determine by experiment analogue data.
It is analyzed according to graphical tools, is emulated using Matlab tool, acquire a large amount of raw acceleration data, passed through
After crossing differential filtering, Matlab tool is entered data into, is emulated by data modeling, to determine the frequency of the high-frequency data filtered
Rate achievees the purpose that filter high frequency noise.In simulation process, high frequency noise and abnormal operation that normal operating generates are determined
Difference of the high frequency noise of generation in frequency, determines the cutoff frequency of high frequency noise, thus in the present embodiment, by difference
After filtering, the high frequency noise higher than cutoff frequency can be filtered out again.
In step S104, if current secondary filter data are more than pre- relative to the difference of a upper secondary filter data
If when threshold value, then triggering auto-focusing or picture zero offset capability.
In the present embodiment, after obtaining secondary filter data, successively judge secondary filter data relative to a upper second level
Whether the difference of filtering data is more than preset threshold, if current secondary filter data are more than preset threshold, triggering is automatic right
Burnt or picture zero offset capability.
It is step S104 flow diagram provided in an embodiment of the present invention referring to Fig. 3.
In step S1041, the angular speed in three axis directions of current secondary filter data is calculated.
In the application, the acceleration information got is three axis of acceleration transducer acquisition, it is on X, Y and Z axis plus
Speed data, therefore, carry out differential filtering and when secondary filter be required to by the data on three axis of acceleration information into
Row filtering.
Data on three axis of acceleration information indicate the acceleration information acquired in three axis directions, when one of axis
On acceleration information variation when, illustrate in the axis direction, micro- throwing equipment is subjected to displacement.It therefore, can be by judging acceleration
Data in three axis directions of data determine whether micro- throwing equipment occurs improper movement.
In addition, the data of three axis directions of secondary filter data are converted to angular velocity data, pass through angular velocity data
It can determine whether the angle deflected in three axis directions.
In step S1042, the angular speed in three axis directions of current secondary filter data is calculated separately relative to upper
Three differences of the angular speed in three axis directions of one secondary filter data.
Preset threshold includes first threshold and second threshold, the angular speed in three axis directions of current secondary filter data with
User or machine the effects of shaking and move, at this point, the angular velocity data in three axis directions of acceleration transducer increases, currently
Angular speed in three axis directions of secondary filter data is relative to the angle in three axis directions of a upper secondary filter data
The difference of speed, can be used for judging it is micro- throwing equipment in a certain direction on deviation size it is big to obtain deviation if difference is big.
Therefore, it can determine that current operation is normal operating or abnormal operation by difference, determine whether that triggering is automatic right
Burnt or picture zero offset capability.
In step S1043, if at least one of three differences is more than the first threshold of the preset threshold, touch
Send out automatic focusing function.
If in three axis directions in the difference of angular speed, when at least one is more than the first threshold of preset threshold, illustrated,
The normal operating for throwing equipment micro- at this time causes the deviation of angular speed to meet triggering automatic focusing function.
First threshold and the corresponding numerical value of second threshold need the various normal operatings of a large amount of analog subscriber to be accustomed to, with
And data when improper mobile, and pass through emulation experiment, the final numerical value for determining first threshold and second threshold.
In step S1044, if at least one of three differences is more than the second threshold of the preset threshold, touch
Send out picture automatic focusing function, wherein the first threshold is less than second threshold.
Similarly, when at least one in the difference of the angular speed in three axis directions of secondary filter data is more than second threshold
When, then trigger picture zero offset capability.
Seen from the above description, in method provided by the embodiments of the present application, after getting acceleration information, by twice
Filtering processing filters out the high-frequency noise that abnormal operation generates, to realize correction triggering auto-focusing and the automatic school of picture
The purpose of the acceleration information of orthofunction excludes the disturbing factor that false triggering generates, after secondary filter data, that is, correction
Data on the basis of judge it is micro- throw equipment situation of movement.In the present embodiment, by three axis directions of secondary filter data
Angular speed relative to the difference in upper three axis directions of a secondary filter data, determine micro- just drift condition for throwing equipment,
Effectively determine whether to trigger auto-focusing or picture zero offset capability, so that the interference of false triggering be discharged.
Embodiment two
It referring to fig. 4, is two flow diagram of embodiment provided by the present application.
In step s 201, the acceleration information of acceleration transducer acquisition is obtained.
In step S202, the acceleration information of current acceleration data and last acquisition is subjected to differential filtering, is obtained
To level-one filtering data.
In step S203, the data for being higher than default cutoff frequency in level-one filtering data are filtered out, secondary filter number is obtained
According to.
In step S204, if current secondary filter data are more than relative to the change rate of a upper secondary filter data
When default change rate, then auto-focusing or picture zero offset capability are triggered.
After being higher than the data of default cutoff frequency in filtering out filtering data, secondary filter data are obtained.By above-mentioned implementation
Example is it is found that determine micro- throwing relative to last difference by the angular speed in three axis directions to current secondary filter data
Whether equipment occurs normal movement, the angle speed in the present embodiment, in three axis directions by judging current secondary filter data
The change rate of degree, that is, judge the variation of at least one of the angular speed in three axis directions of current secondary filter data
Rate changes simply by the presence of the change rate of the angular speed at least one axis direction, and change rate is greater than default change rate
When, then trigger auto-focusing or picture zero offset capability.
Detailed process is two flow diagram of embodiment provided by the present application referring to Fig. 5.
In step S2041, the angular speed in three axis directions of current secondary filter data is calculated.
In step S2042, the angular speed calculated separately in three axis directions of the current secondary filter data is opposite
In three change rates of the angular speed in three axis directions of a upper secondary filter data.
Calculate three of the angular speed in three axis directions of current secondary filter data and a upper secondary filter data
Three differences of the angular speed in axis direction, will be in three differences respectively three axis directions than a upper secondary filter data
Magnitude of angular velocity obtains three change rates of the angular speed in three axis directions.
In step S2043, when at least one of described three change rates are greater than the first pre- of the default change rate
If when change rate, triggering automatic focusing function.
When at least one of three change rates are greater than the first default change rate of default change rate, then triggering is automatic right
Burnt function, that is to say, that as long as being greater than the first default change rate in three change rates, illustrate to have occurred in this direction partially
Turn, when the change rate of angular speed in this direction is greater than default first default change rate, deflection efficiency in this direction at this time
Become larger, which illustrates that improper movement has occurred in micro- throwing equipment, therefore, triggers automatic focusing function.
In step S2044, when at least one of described three change rates are greater than the second pre- of the default change rate
If when change rate, triggering picture zero offset capability.
It similarly, is then to trigger when bigger deflection occurs on any one direction in three axis directions for micro- throwing equipment
Zero offset capability causes automatically correcting for micro- throwing equipment picture, to influence the viewing effect of user.
Seen from the above description, in the embodiment of the present application, after filtering twice, filtering out due to abnormal operation or
High-frequency noise caused by machine vibration etc., then, by the change rate for judging angular speed in three axis directions of current secondary filter data
Determine whether micro- throwing equipment moves, thus prevent maloperation trigger it is micro- throw equipment auto-focusing and picture automatically correct behaviour
Make.
Embodiment three
It is three flow diagram of embodiment provided by the embodiments of the present application referring to Fig. 6.
In step S301, the acceleration information of acceleration transducer acquisition is obtained.
In step s 302, the acceleration information calculated in three axis directions that current time obtains is corresponding with last moment
Three axis directions on acceleration information three differences.
In step S303, when at least one difference in three differences is greater than preset difference value, deletes current time and obtain
The acceleration information in three axis directions taken, obtains level-one filtering data.
Calculate separately acceleration information three axis directions corresponding with last moment in three axis directions at current time
On acceleration information three differences, if in three differences any one be greater than preset difference value, illustrate current time
Acceleration information in this direction belongs to burr, spiking data, therefore, deletes adding in three axis directions that current time obtains
Speed data obtains level-one filtering data.
In the embodiment of the present application, the burr due to abnormal operation generation, spiking data are filtered out by differential filtering method.
Preset difference value in this step passes through Matlab and acquires mass data progress emulation testing, preset difference value calculated, to filter
Flash removed, spiking data.
In step s 304, the data for being higher than default cutoff frequency in level-one filtering data are filtered out, secondary filter number is obtained
According to.
In step S305, if current secondary filter data are more than relative to the change rate of a upper secondary filter data
When default change rate, then auto-focusing or picture zero offset capability are triggered.
Seen from the above description, in the embodiment of the present application, by differential filtering method filter out abnormal operation generation burr,
Spiking data is realized thick filtering processing, the high-frequency noise number for being higher than default cutoff frequency is then filtered out using low-pass filtering algorithm
According to, obtain secondary filter data, and then filter out abnormal operation generation high frequency noise data.It effectively prevent maloperation frequently to touch
Auto-focusing or picture zero offset capability are sent out, to promote the viewing effect of user.
It is the micro- throwing equipment knot of one kind provided by the embodiments of the present application that present invention also provides a kind of micro- throwing equipment referring to Fig. 7
Structure schematic diagram.
As shown in fig. 7, micro- throwing equipment includes: master control borad 1, acceleration transducer 2, drive circuit assembly 3 and lens assembly
4, in which: the master control borad 1 includes processor, memory and A/D conversion module, the A/D conversion module and the processor
Connection, the A/D conversion module connect with the acceleration transducer 2, the drive circuit assembly 3 respectively with the processor
It is connected with lens assembly 4；The memory, for storing program code；The processor is deposited for reading in the memory
The program code of storage, and execute the method as described in above-described embodiment.
In micro- throwing device structure schematic diagram shown in Fig. 7, the data of acquisition are sent to A/D and converted by acceleration transducer 2
Module converts analog signals into digital signal by A/D conversion module, and processor obtains acceleration from A/D conversion module in real time
Data, and acceleration information is handled according to method provided by the above embodiment.Processor after being filtered twice, according to two
Grade filtering data judges whether deflect in micro- three axis directions for throwing equipment, and deflection whether be enough to trigger auto-focusing and
Picture zero offset capability.
If being enough to trigger auto-focusing or picture zero offset capability, sends auto-focusing or picture automatically corrects finger
It enables to drive circuit assembly 3, drives lens assembly 4 to work by drive circuit assembly 3, and realize auto-focusing or the automatic school of picture
Orthofunction.
Seen from the above description, it in micro- throwing equipment provided in an embodiment of the present invention, is mainly realized using digital processing mode
The filtering processing of 2 data of acceleration transducer can effectively reduce micro- volume for throwing equipment.
It is another kind provided by the embodiments of the present application that the embodiment of the present application also provides another micro- throwing equipment referring to Fig. 8
Micro- throwing device structure schematic diagram.
As shown in figure 8, micro- throwing equipment includes: master control borad 1, filter circuit component, acceleration transducer 2, driving circuit group
Part 3 and lens assembly 4, in which:
The master control borad 1 includes processor, memory and A/D conversion module, the A/D conversion module and the processor
Connection, the filter circuit component are connect with the A/D conversion module and acceleration transducer 2 respectively, the driving circuit group
Part 3 is connect with the processor and lens assembly 4 respectively；The memory, for storing program code；The processor is used
The program code stored in the reading memory, and execute such as method provided by the above embodiment.
The micro- throwing equipment provided in the embodiment of the present application includes filter circuit component, is added when acceleration transducer 2 collects
After speed data, it is sent to filter circuit component, is filtered the analog data signal of acquisition by filter circuit component.
Wherein, filter circuit component includes differential filtering circuit and low-pass filter circuit.Differential filtering circuit is used for the acceleration that will be acquired
Degree is used to carry out differential filtering treated data at low-pass filtering according to differential filtering processing, low-pass filter circuit is carried out
Reason, and data are sent to A/D conversion module progress analog-to-digital conversion by treated.Processor obtains A/D conversion module in real time and turns
Digital signal after changing, and judge whether to be enough to trigger auto-focusing or picture zero offset capability.
Seen from the above description, the micro- throwing equipment provided in the embodiment of the present application is filtered place using analogue filter circuit
Reason aggravates micro- weight for throwing equipment on hardware, can reduce the machine vibration in micro- throwing equipment work, meanwhile, processor is handled
Data be filtered, reject abnormal operation generate high-frequency noise, height restore initial data, increase processor school
The precision of positive trigger data.
Those skilled in the art will readily occur to of the invention its after considering specification and the disclosure invented here of practice
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (8)
1. a kind of micro- correction triggering method for throwing equipment characterized by comprising
Obtain the acceleration information of micro- throwing equipment of acceleration transducer acquisition；
The acceleration information of current acceleration data and last acquisition is subjected to differential filtering, obtains level-one filtering data；
The data for being higher than default cutoff frequency in the level-one filtering data are filtered out, secondary filter data are obtained；
If current secondary filter data are more than preset threshold relative to the difference of a upper secondary filter data；Or, if
When current secondary filter data are more than default change rate relative to the change rate of a upper secondary filter data, then triggering is automatic right
Burnt or picture zero offset capability.
2. the method according to claim 1, wherein described add what current acceleration data and last time acquired
Speed data carries out differential filtering, comprising:
Calculate micro- acceleration degree for throwing equipment in three axis directions of the acceleration transducer of current time acquisition
According to three differences of the acceleration information in three axis directions corresponding with last moment；
When at least one difference in three differences is greater than preset difference value, the described micro- of the current time acquisition is deleted
Throw acceleration information of the equipment in three axis directions of the acceleration transducer.
3. the method according to claim 1, wherein described filter out is higher than default cut in the level-one filtering data
The only data of frequency, comprising:
Obtain acceleration information of the level-one filtering data in three axis directions of the acceleration transducer；
If acceleration information at least one of of the current filter data in three axis directions of the acceleration transducer
Higher than default cutoff frequency, then current filter data are filtered out.
4. the method according to claim 1, wherein if current secondary filter data are relative to a upper second level
When the change rate of filtering data is more than default change rate, then auto-focusing or picture zero offset capability are triggered, comprising:
Calculate angular speed of the current secondary filter data in three axis directions of the acceleration transducer；
It is opposite to calculate separately angular speed of the current secondary filter data in three axis directions of the acceleration transducer
In three change rates of angular speed of the upper secondary filter data in three axis directions of the acceleration transducer；
When at least one of described three change rates are greater than the first default change rate of the default change rate, triggering is automatic
Focus function；
When at least one of described three change rates are greater than the second default change rate of the default change rate, picture is triggered
Zero offset capability；Wherein, the described first default change rate is less than the second default change rate.
5. the method according to claim 1, wherein if current secondary filter data are relative to a upper second level
When the difference of filtering data is more than preset threshold, then auto-focusing or picture zero offset capability are triggered, comprising:
Calculate angular speed of the current secondary filter data in three axis directions of the acceleration transducer；
It is opposite to calculate separately angular speed of the current secondary filter data in three axis directions of the acceleration transducer
In three differences of angular speed of the upper secondary filter data in three axis directions of the acceleration transducer；
If at least one of three differences is more than the first threshold of the preset threshold, automatic focusing function is triggered；
If at least one of three differences is more than the second threshold of the preset threshold, triggers picture and automatically correct function
It can, wherein the first threshold is less than second threshold.
6. a kind of micro- throwing equipment characterized by comprising master control borad, acceleration transducer, drive circuit assembly and lens group
Part, in which:
The master control borad includes processor, memory and A/D conversion module, and the A/D conversion module is connected to the processor,
The A/D conversion module is connect with the acceleration transducer, the drive circuit assembly respectively with the processor and camera lens
Component connection；
The memory, for storing computer program；
The processor for reading the computer program stored in the memory, and is executed such as any institute of claim 1-5
The method stated.
7. a kind of micro- throwing equipment characterized by comprising master control borad, filter circuit component, acceleration transducer, driving circuit
Component and lens assembly, in which:
The master control borad includes processor, memory and A/D conversion module, and the A/D conversion module is connected to the processor,
The filter circuit component is connect with the A/D conversion module and acceleration transducer respectively, the drive circuit assembly difference
It is connect with the processor and lens assembly；
The memory, for storing computer program；
The processor for reading the computer program stored in the memory, and is executed such as any institute of claim 1-5
The method stated.
8. micro- throwing equipment according to claim 7, which is characterized in that the filter circuit component includes difference filtering circuit
And low-pass filter circuit；
The difference filtering circuit is connect with the acceleration transducer, the low-pass filter circuit and the A/D conversion module
Connection.
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| CN201710224580.6A CN106993173B (en) | 2017-04-07 | 2017-04-07 | A kind of micro- correction triggering method and micro- throwing equipment for throwing equipment |
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| CN201710224580.6A CN106993173B (en) | 2017-04-07 | 2017-04-07 | A kind of micro- correction triggering method and micro- throwing equipment for throwing equipment |
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| CN112437283B (en) * | 2020-11-09 | 2022-06-10 | 广景视睿科技（深圳）有限公司 | Method and system for adjusting projection jitter |
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| JP4422074B2 (en) * | 2005-06-16 | 2010-02-24 | Ｎｅｃディスプレイソリューションズ株式会社 | Projector and focus adjustment method |
| JP4454543B2 (en) * | 2005-06-23 | 2010-04-21 | Ｎｅｃディスプレイソリューションズ株式会社 | Projector with distortion correction means |
| CN101815191A (en) * | 2010-04-24 | 2010-08-25 | 中兴通讯股份有限公司 | Method for regulating display picture by using portable terminal projector and portable terminal |
| CN103226282B (en) * | 2013-05-13 | 2016-09-07 | 合肥华恒电子科技有限责任公司 | Portable virtual reality projection arrangement |
| KR20150115455A (en) * | 2014-04-04 | 2015-10-14 | 삼성전자주식회사 | Method and apparatus for controlling projector focus in portable device |
| CN105844179A (en) * | 2016-03-18 | 2016-08-10 | 广东欧珀移动通信有限公司 | Terminal protection method and device |
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2017
- 2017-04-07 CN CN201710224580.6A patent/CN106993173B/en active Active
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