CN103970304B - Optical mouse apparatus and use method in optical mouse apparatus - Google Patents
Optical mouse apparatus and use method in optical mouse apparatus Download PDFInfo
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Abstract
The invention discloses a kind of optical mouse apparatus and use the method in an optical mouse apparatus.The method includes: be generated and transmitted by an optical signalling, and this optical signalling can be transmitted on surface produce optical reflection signal；Producing image imaging according to this optical reflection signal, this image imaging is the picture displacement estimating this optical mouse apparatus；Mass parameter, rate travel or unit interval output number according to this image imaging, dynamically adjusts exposure when launching this optical signalling.By dynamically increasing or reduce the exposure of image imaging according to different behaviours in service, reach to take into account exposure and adjust power saving, maintain sensed image signal intensity and reduce the purpose of displacement detection error.
Description
Technical field
The present invention relates to a kind of optical mouse mechanism, particularly with regard to a kind of optical mouse apparatus with use in optical mouse
Method in device.
Background technology
In general, the optical mouse of currently available technology has a photosensory assembly, is obtained by this photosensory assembly
Multiple sensed image, and by multiple sensed image being associated property comparisons being obtained the information of detection displacement, for those
For the exposure of sensed image, although existing optical mouse can determine the exposure value of above-mentioned sensed image, but it is only limitted to
By calculate whole sensed image mean flow rate, make the mean flow rate of sensed image fall a certain predetermined exposure range it
In, in other words, regardless of the quality of sensed image or the service condition of optical mouse or environment, the most existing
In the exposure value of sensed image is only set as a preset range by optical mouse, such exposure decision mechanism is for portable
Easily consuming the electric power of wireless optical mouse for optical mouse, therefore in portable optical mouse, stand-by time is easily subject to
To limiting.Additionally, the adjustment of exposure is the most relevant to the image quality of sensed image, the reduction of exposure represents sensed image
The signal intensity of imaging signal will reduce, and has influence on picture quality, and the error causing displacement detection is too much, but, now
How optical mouse technology takes into account exposure adjustment power saving, sensed image signal intensity and fall if the most not simultaneously taking account of at present
Low displacement detecting error.
Summary of the invention
Therefore, an object of the present invention is disclose a kind of optical mouse apparatus and use at this optical mouse apparatus
In method, by dynamically increasing or reduce the exposure of image imaging according to different behaviours in service, reach to take into account exposure and adjust
Whole power saving, maintenance sensed image signal intensity and the purpose of reduction displacement detection error, solve problem of the prior art.
According to embodiments of the invention, disclose a kind of optical mouse apparatus.This optical mouse apparatus includes a light source
Unit, a sensing unit and a processing unit.Light source cell is used for being generated and transmitted by an optical signalling, and this optical signalling is launched
An optical reflection signal is produced to a surface.Sensing unit produces an image imaging, this figure according to this optical reflection signal
As imaging is in order to estimate the picture displacement of optical mouse apparatus.Processing unit is coupled to light source cell and sensing unit, and in order to
Control light source cell and launch this optical signalling, and in order to according to this image imaging, to control the exposure of image imaging, dynamically to exist
At least switch between double-exposure value scope.
According to embodiments of the invention, also disclose a kind of optical mouse apparatus.This optical mouse apparatus includes a light
Source unit, a sensing unit and a processing unit.Light source cell is used for being generated and transmitted by an optical signalling, and this optical signalling is sent out
It is incident upon and produces an optical reflection signal on a surface.Sensing unit produces an image imaging according to this optical reflection signal, should
Image imaging is in order to estimate the picture displacement of optical mouse apparatus.Processing unit is coupled to light source cell and sensing unit, and uses
This optical signalling is launched with control light source cell, and in order to the mass parameter according to this image imaging, rate travel or unit
Time output number, dynamically adjusts the exposure of this image imaging.
According to embodiments of the invention, also disclose a kind of use method in optical mouse apparatus, include: produce
And launch an optical signalling, this optical signalling is transmitted to produce an optical reflection signal on a surface；Anti-according to this optics
Penetrating signal and produce an image imaging, this image imaging is in order to estimate the picture displacement of optical mouse apparatus；According to this image imaging,
Control the exposure of this image imaging, dynamically switch between at least double-exposure value scope.
According to embodiments of the invention, a kind of use method in optical mouse apparatus is also disclosed, includes: produce also
Launching an optical signalling, this optical signalling is transmitted to produce an optical reflection signal on a surface；According to this optical reflection
Signal produces an image imaging, and this image imaging is in order to estimate the picture displacement of optical mouse apparatus；Matter according to image imaging
Amount parameter, rate travel or unit interval output number, control the exposure of this image imaging, dynamically at least double-exposure value model
Switch between enclosing.
Accompanying drawing explanation
Fig. 1 is the block schematic diagram of the optical mouse apparatus of the preferred embodiment of the present invention.
Fig. 2 is the mode of operation schematic diagram referring concurrently to mass parameter Yu rate travel of the optical mouse apparatus shown in Fig. 1.
Fig. 3 is the example referring concurrently to mass parameter with the exposure adjustment of rate travel of the optical mouse apparatus shown in Fig. 1
Schematic diagram.
Fig. 4 is the operational flowchart referring concurrently to mass parameter Yu rate travel of the optical mouse apparatus shown in Fig. 1.
Wherein, description of reference numerals is as follows:
100 optical mouse apparatus
101 housings
105 light source cells
110 sensing units
115 processing units
201,202,203 state
Detailed description of the invention
Refer to the block schematic diagram that Fig. 1, Fig. 1 are the optical mouse apparatus 100 of the preferred embodiment of the present invention.Optical mouse
Device 100 includes housing 101, light source cell 105, sensing unit 110 and processing unit 115, wherein a light source list
Unit 105 is used for being generated and transmitted by an optical signalling S_opt, and light source cell 105 on the implementation can be by occurring light emitting diode
(LED) or laser diode (Laser) realizes, this optical signalling S_opt is transmitted to reflect generation one on a surface
Optical reflection signal S_ref, sensing unit 110 produces an image imaging according to this optical reflection signal S_ref, this image imaging
In order to estimate a picture displacement of optical mouse apparatus 100, such as, optical mouse apparatus 100 can connect according in image imaging
The mouse shadowgraph imaging position of multiple sensing pictures continuous, calculates the picture displacement of shade, to estimate mouse displacement, additionally, should
A little sensing pictures are available for processing unit 115 as reference, to determine the optical mouse apparatus 100 exposure to this image imaging.Place
Reason circuit 115 is coupled to light source cell 105 and sensing unit 110, and in order to control light source cell 105 transmitting optics signal S_
Opt, and in order to according to above-mentioned image imaging, to control the exposure of this image imaging, this exposure is dynamically exposed at least two
Switch between light value scope, reduce the magnitude of current of total system, reach effect of power saving.In other words, the present invention is by root
Dynamically increase or reduce the exposure of image imaging according to different behaviours in service, reach to take into account exposure and adjust power saving, maintain biography
Sense image intensity signal and the purpose of reduction displacement detection error, solve the bottleneck of prior art.
Specifically, exposure value can be that the distribution between 0 ~ 255 is to represent it with grey decision-making numerical value, for example,
The grey decision-making scope of the double-exposure value scope e.g. 100 ~ 150 of the present invention and the grey decision-making scope of 70 ~ 120, single when processing
Unit 115 is when judging now can to reduce exposure according to this image imaging, processing unit 115 can by this exposure by 100 ~ 150 ash
Rank value scope switches to the grey decision-making scope of 70 ~ 120, reaches the purpose of power saving, conversely speaking, when processing unit 115 is according to this
Image imaging and when judging now should to increase exposure, this exposure can be switched by processing unit 115 by the grey decision-making scope of 70 ~ 120
It is the grey decision-making scope of 100 ~ 150, to increase the signal intensity of image imaging.In implementation, this case does not limit and is only using two
Different exposure value scopes, and the different exposure value scopes of more than three can be used to be used as the switching at runtime exposed；This
Outward, the numerical value of the grey decision-making scope of above-mentioned exposure is only the one of which embodiment of this case, the not restriction of this case, other number
Value all can be suitable in the present invention.
Specifically, in the first embodiment, processing unit 115 calculates a mass parameter of image imaging corresponding to letter
Number intensity, and dynamically adjust this exposure of this image imaging according to this mass parameter, cut between at least double-exposure value scope
Change, for example, this mass parameter is signal to noise ratio Signal to Noise Ratio, a SNR, when processing unit 115 is detected
When signal to noise ratio to this image imaging is higher than the first signal threshold value QTH1, represent that image intensity signal the most instantly is very strong,
The quality that also represent image imaging is preferable, and the accuracy rate being carried out offset estimation by image imaging is at a relatively high, now can adjust
Whole and gradually reduce the exposure of image imaging to reach the effect of power saving simultaneously, therefore, processing unit 115 can determine to adjust and drop
Low exposure, switches to the second exposure value scope by exposure from the first exposure value scope, and wherein the first exposure value scope is higher than second
Exposure value scope, for example, the first exposure value scope can be the grey decision-making scope of aforementioned 100 ~ 150, and the second exposure value
Scope can be the grey decision-making scope of aforementioned 70 ~ 120.If it addition, processing unit 115 detects the signal to noise ratio of this image imaging
Too low, then it represents that current image image quality is the poorest, carried out by image imaging that the accuracy rate of offset estimation is poor, displacement
Error relatively big, and in implementation, whether processing unit 115 judges image image quality according to a secondary signal threshold value QTH2
Becoming poor, when process decision chart becomes poor as image quality, processing unit 115 can determine adjust and step up image imaging
Exposure, exposure is switched to the first exposure value scope from the second exposure value scope, reach promote image Imagewise exposure effect.
It is noted that the first above-mentioned signal threshold value QTH1 is the signal quality/intensity judging image imaging
Whether preferable, secondary signal threshold value QTH2 then in order to judge whether the signal quality/intensity of image imaging is deteriorated, Qi Zhong
One signal threshold value QTH1 is higher than secondary signal threshold value QTH2, and uses two different signal threshold values to carry out judging
It is advantageous in that the quality/strength of image imaging typically has certain trend characteristic, less has instantaneous change, therefore, uses
Two different signal threshold values carry out picture quality/intensity and judge to promote the accuracy rate of judgement.But, other is implemented
In example, in order to save circuit cost running, it is possible to use single signal threshold value judge the signal quality of image imaging/
Intensity is the most preferably and whether signal quality/intensity is deteriorated, and this falls within scope of the invention.
In second embodiment, processing unit 115 then calculates a displacement parameter of this image imaging, and according to this displacement parameter
Dynamically adjust this exposure, switch between at least double-exposure value scope.Specifically, in the present embodiment, indicated by displacement parameter
Go out is a mouse rate travel, if it is indicated that go out the mouse rate travel positive high-speed mobile of higher mouse, represents now mouse
Moving displacement is relatively big, for the offset estimation of image imaging, now can allow/allow the error of part to produce, accordingly
Required image image quality can be relatively low, in other words, was not required to the image imaging signal of high intensity, namely
Say, when mouse rate travel is higher, in order to power saving can reduce exposure, if displacement parameter indicates mouse conversely speaking,
Rate travel relatively low mouse only low speed moves, and represents now mouse moving displacement less, carrys out the offset estimation of image imaging
Saying, at this moment cannot allow/allow the error of part to produce, image image quality required accordingly needs higher, changes sentence
Talking about, now image imaging signal needs higher signal intensity, therefore, processing unit 115 can compare speed threshold value with
And the mouse rate travel shown in displacement parameter indication judges high-speed mobile or low speed moves, to determine current exposure
Light.Specifically, when this mouse rate travel is higher than a first rate threshold value STH1, processing unit 115 can reduce image
The exposure of imaging, switches to the second exposure value scope by exposure from the first exposure value scope, reaches the purpose of power saving, the first exposure
Value scope is higher than the second exposure value scope, for example, the first exposure value scope can be the grey decision-making model of aforementioned 100 ~ 150
Enclose, and the second exposure value scope can be the grey decision-making scope of aforementioned 70 ~ 120；It is less than when this mouse rate travel conversely speaking,
During one second speed threshold value STH2, processing unit 115 improves the exposure of image imaging, by this exposure from the second exposure value scope
Switch to the first exposure value scope.
It is noted that above-mentioned first rate threshold value STH1 is to judge whether mouse rate travel becomes higher
And carrying out high-speed mobile, the second speed threshold value STH2 then carries out low in order to judge mouse rate travel whether to become relatively low
Speed is mobile, uses two different speed threshold values to carry out judging to be advantageous in that mouse rate travel typically has certain and becomes
Gesture characteristic, the constant generation excessively change compared with I haven't seen you for ages, therefore, use two different speed threshold values to carry out mouse and move
The judgement of speed, can promote the accuracy rate of judgement.But, in other embodiments, in order to save circuit cost running, it is also possible to
Using single speed threshold value to judge the rate travel of mouse, and this falls within scope of the invention.Additionally, aforesaid Mus
Mark rate travel can be the actual rate travel of mouse or cursor of mouse rate travel, and processing circuit 115 can become according to image
The estimated displacement of picture calculates the actual rate travel of mouse, or processes the circuit 115 estimated displacement also dependent on image imaging
And the resolution of display picture calculates cursor of mouse rate travel, owing to the change of the actual rate travel of mouse is proportional to
The change of cursor of mouse rate travel, therefore, by the actual rate travel of foregoing mouse or the equal energy of cursor of mouse rate travel
Enough reaching correctly to judge the result that high-speed mobile or low speed move, so, this change design falls within the model of the present invention
Farmland.
It addition, in the third embodiment, aforesaid displacement parameter is to indicate optical mouse apparatus 100 in a unit interval
An interior displacement output number, the displacement output number in processing unit 115 digit's time, and according in the unit interval
Displacement output number decides whether dynamically to adjust the exposure of this image imaging.Optical mouse apparatus 100 is with a fixed frequency
Produce image imaging estimated displacement, and the displacement estimated is exported to the most corresponding host side, if image imaging
Signal intensity poor and make the displacement result estimated at present more inaccurate, then optical mouse apparatus 100 will not be by present
The displacement result output estimated, but the displacement result of accurately estimation before using, to reduce the situation of mouse shake, because of
This, if the displacement output number that optical mouse apparatus 100 is within the unit interval is higher than certain level, then it represents that image one-tenth
As still there is certain signal intensity, now can reduce exposure, carrying out power saving, if optical mouse apparatus 100 conversely speaking,
Displacement output number within the unit interval is less than certain level, then it represents that the signal intensity of image imaging becomes poor,
Now need to promote exposure, to promote the signal intensity of image imaging, therefore, when this displacement output number is higher than one first numerical value
During door NTH1, processing unit 115 reduces the exposure of this image imaging, and from the first exposure value scope, this exposure is switched to second
Exposure value scope, carries out power saving, and wherein the first exposure value scope is higher than the second exposure value scope, for example, the first exposure value
Scope can be the grey decision-making scope of aforementioned 100 ~ 150, and the second exposure value scope can be the grey decision-making model of aforementioned 70 ~ 120
Enclosing, when this displacement output number is less than a second value door NTH2, processing unit 115 improves the exposure of this image imaging,
This exposure is switched to the first exposure value scope from the second exposure value scope, promotes exposure, promote image image quality.
Therefore, according to above-described embodiment, the processing unit 115 of this case can be according to the produced figure of sensing unit 110
The mass parameter such as actual rate travel of signal to noise ratio, rate travel such as mouse or cursor of mouse rate travel as imaging
Or the displacement output number of unit interval, dynamically adjust the exposure of this image imaging.Furthermore, above-mentioned dynamic adjustment light source cell
The operation of the exposure of 105 also can export number referring concurrently to the displacement of mass parameter, rate travel or unit interval and run.Please
Collocation is the behaviour referring concurrently to mass parameter Yu rate travel of the optical mouse apparatus 100 shown in Fig. 1 with reference to Fig. 2 and Fig. 3, Fig. 2
Making view, Fig. 3 is the exposure tune referring concurrently to mass parameter with rate travel of the optical mouse apparatus 100 shown in Fig. 1
Whole example schematic.As in figure 2 it is shown, optical mouse apparatus 100 includes three different conditions, correspond respectively to three different
Exposure value scope, state 201 is corresponding to the grey decision-making scope of high exposure value scope the most aforementioned 100 ~ 150, and state 202 is corresponding
In the grey decision-making scope of middle exposure value scope the most aforementioned 70 ~ 120, state 203 is the most aforementioned corresponding to low exposure value scope
The grey decision-making scope of 40 ~ 90, QA represents mass parameter such as signal to noise ratio, and SD represents rate travel.
As it is shown on figure 3, processing unit 115 is when dynamically adjusting the exposure of this image imaging, come by progressively adjusting exposure
Reach, for example, exposure settings is first corresponded to state 201 in high exposure value scope by processing unit 115, if quality ginseng
Number QA, less than signal threshold value QTH2, represents that image image quality is poor, then exposure can be maintained high exposure by processing unit 115
Value scope corresponds to state 201, if mass parameter QA is higher than signal threshold value QTH1, represents the quality of image imaging relatively
Good, somewhat reduce exposure can't the quality of excessive influence image imaging, then processing unit 115 can be by exposure by high exposure value model
Enclose and switch to middle exposure value scope corresponding to state 202, reach power saving, if now rate travel SD judges less than speed door
Bank value STH2, represents that low speed moves and offset estimation needs more accurate, then exposure can be maintained middle exposure value by processing unit 115
Scope, and if rate travel SD judges that, higher than speed threshold value STH1, expression high-speed mobile, offset estimation is not required to the most accurate
And tolerable partial distortion, then for power saving, exposure can be reduced to low exposure value model by middle exposure value scope by processing unit 115
Enclose corresponding to state 203.If in state 203, follow-up rate travel SD becomes lower than speed threshold value in position conversely speaking,
STH2 represents and is judged to that low speed moves, then exposure can be promoted to middle exposure value model by low exposure value scope by processing unit 115
Enclose corresponding to state 202, and if when state 202 mass parameter QA become lower than signal threshold value QTH2, then process list
Exposure can be adjusted and switch paramount exposure value scope corresponding to state 201 by unit 115 by middle exposure value scope.Therefore, via
Above-mentioned switching at runtime adjusts the operation of exposure value scope, and light source cell 105 need not the too much magnitude of current, reaches to save optics
The purpose of the electric power of mouse apparatus 100.
In order to make reader become apparent from understanding the operation of the present invention, refer to Fig. 4, Fig. 4 is the optical mouse shown in Fig. 1
Device 100 is referring concurrently to the operational flowchart of mass parameter QA Yu rate travel SD, in order to understand explanation operating process, this enforcement
In example, only use a signal threshold value to compare with reference to mass parameter QA, the most only use a speed threshold value and mobile speed
Rate SD compares, and so this is not the restriction of the present invention.If generally can reach identical result, it is not required to necessarily shine
Sequence of steps in flow process shown in Fig. 4 is carried out, and the step shown in Fig. 4 is not necessarily intended to be carried out continuously, namely other step
Suddenly also can be inserted into wherein；Detailed step is with reference to following description:
Step 405: sensing circuit 110 produces image imaging；
Step 410: process circuit 115 and calculate the mass parameter such as signal to noise ratio of image imaging；
Step 415: process circuit 115 and calculate the displacement parameter actual rate travel of such as mouse of image imaging, mouse light
Mark rate travel or the output number of the displacement in the unit interval；
Step 420: process circuit 115 and judge that whether mass parameter is higher than signal threshold value?If mass parameter is higher than letter
Number threshold value, then carry out step 425, the most then carry out step 430；
Step 425: process circuit 115 and judge that whether the rate travel corresponding to displacement parameter is higher than speed threshold value?As
Really rate travel is higher than speed threshold value, then carry out step 440, the most then carry out step 435；
Step 430: process circuit 115 and control to be exposed to high exposure range；
Step 435: process circuit 115 and control to be exposed to middle exposure range；And
Step 440: process circuit 115 and control to be exposed to low exposure range.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (19)
1. an optical mouse apparatus, comprises:
One light source cell, is used for being generated and transmitted by optical signalling, and this optical signalling is transmitted on surface produce optical reflection
Signal；
This optical mouse apparatus is characterised by also comprising:
One sensing unit, produces image imaging according to this optical reflection signal, and this image imaging is in order to estimate that this optical mouse fills
The picture displacement put；And
One processing unit, is coupled to this light source cell and this sensing unit, launches this optical signalling in order to control this light source cell,
And in order to according to this image imaging, control the exposure of this image imaging, dynamically switch between double-exposure value scope；
Wherein this processing unit is according to the mass parameter of this image imaging, dynamically adjusts this exposure of this light source cell, this two
Switch between exposure value scope；This mass parameter is signal to noise ratio, when this signal to noise ratio of this image imaging is higher than the first signal door
During value, this processing unit reduces this exposure of this image imaging, and from the first exposure value scope, this exposure is switched to the second exposure
Value scope, this first exposure value scope is higher than this second exposure value scope.
2. optical mouse apparatus as claimed in claim 1, it is characterised in that: when this signal to noise ratio of this image imaging is less than second
During signal threshold value, this processing unit improves this exposure of this image imaging, this exposure is switched from this second exposure value scope
To this first exposure value scope.
3. optical mouse apparatus as claimed in claim 2, it is characterised in that: this first signal threshold value is higher than this secondary signal
Threshold value.
4. optical mouse apparatus as claimed in claim 1, it is characterised in that: this processing unit is according to the displacement of this image imaging
Parameter, dynamically adjusts this exposure of this image imaging, switches between this double-exposure value scope.
5. optical mouse apparatus as claimed in claim 4, it is characterised in that: this displacement parameter indicates mouse rate travel,
When this mouse rate travel is higher than first rate threshold value, this processing unit reduces this exposure of this image imaging, by this exposure
Light switches to the second exposure value scope from the first exposure value scope, and this first exposure value scope is higher than this second exposure value scope.
6. optical mouse apparatus as claimed in claim 5, it is characterised in that: when this mouse rate travel is less than the second speed door
During bank value, this processing unit improves this exposure of this image imaging, by this exposure from this second exposure value scope switch to this
One exposure value scope.
7. optical mouse apparatus as claimed in claim 6, it is characterised in that: this first rate threshold value is higher than this second speed
Threshold value.
8. optical mouse apparatus as claimed in claim 7, it is characterised in that: this mouse rate travel is that a mouse is actual to be moved
Speed or cursor of mouse rate travel.
9. optical mouse apparatus as claimed in claim 4, it is characterised in that: this displacement parameter indicates the position in the unit interval
Moving output number, when this displacement output number is higher than the first numerical value door, this processing unit reduces this exposure of this image imaging
Light, switches to the second exposure value scope by this exposure from the first exposure value scope, and this first exposure value scope is higher than this second exposure
Light value scope.
10. optical mouse apparatus as claimed in claim 9, it is characterised in that: when this displacement output number is less than second value
During door, this processing unit improves this exposure of this image imaging, by this exposure from this second exposure value scope switch to this
One exposure value scope.
11. optical mouse apparatus as claimed in claim 10, it is characterised in that: this first numerical value door is higher than this second value
Door.
12. 1 kinds use the method in optical mouse apparatus, comprise:
Being generated and transmitted by optical signalling, this optical signalling is transmitted on surface produce optical reflection signal；
This optical mouse apparatus is characterised by also comprising:
Producing image imaging according to this optical reflection signal, this image imaging is in order to estimate the figure image position of this optical mouse apparatus
Move；And
According to this image imaging, control the exposure of this image imaging, dynamically switch between double-exposure value scope；
Wherein it is characterised by: the step of this exposure when controlling to launch this optical signalling according to this image imaging comprises:
According to the mass parameter of this image imaging, dynamically adjust this exposure of this image imaging, between this double-exposure value scope
Switching；Wherein this mass parameter is signal to noise ratio, and the step dynamically adjusting this exposure of this image imaging comprises: when this image
When this signal to noise ratio of imaging is higher than the first signal threshold value, reduce this exposure of this image imaging, this exposure is exposed from one first
Light value scope switches to the second exposure value scope, and wherein this first exposure value scope is higher than this second exposure value scope.
13. methods as claimed in claim 12, it is characterised in that: the step of this exposure dynamically adjusting this image imaging is also wrapped
Contain:
When this signal to noise ratio of this image imaging is less than secondary signal threshold value, improve this exposure of this image imaging, by this exposure
Light switches to this first exposure value scope from this second exposure value scope.
14. methods as claimed in claim 12, it is characterised in that: this exposure of this image imaging is controlled according to this image imaging
Step comprise:
According to the displacement parameter of this image imaging, dynamically adjust this exposure of this image imaging, between this double-exposure value scope
Switching.
15. methods as claimed in claim 14, it is characterised in that: this displacement parameter indicates mouse rate travel, Yi Jidong
State adjusts the step of this exposure when launching this optical signalling and comprises:
When this mouse rate travel is higher than first rate threshold value, reduce this exposure of this image imaging, by this exposure from one
First exposure value scope switches to the second exposure value scope, and wherein this first exposure value scope is higher than this second exposure value scope.
16. methods as claimed in claim 15, it is characterised in that: the step of this exposure dynamically adjusting this image imaging is also wrapped
Contain:
When this mouse rate travel is less than the second speed threshold value, improve this exposure of this image imaging, by this exposure from this
Second exposure value scope switches to this first exposure value scope.
17. methods as claimed in claim 15, it is characterised in that: this mouse rate travel is the actual rate travel of mouse or Mus
Mark cursor rate travel.
18. methods as claimed in claim 15, it is characterised in that: this displacement parameter indicates the displacement output in the unit interval
Number, and the step dynamically adjusting this exposure of this image imaging comprises:
When this displacement output number is higher than the first numerical value door, reduce this exposure of this image imaging, by this exposure from first
Exposure value scope switches to the second exposure value scope, and wherein this first exposure value scope is higher than this second exposure value scope.
19. methods as claimed in claim 18, it is characterised in that: the step of this exposure dynamically adjusting this image imaging is also wrapped
Contain:
This displacement output number less than second value door time, improve this exposure of this image imaging, by this exposure from this second
Exposure value scope switches to this first exposure value scope.
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| CN108664146B (en) * | 2017-03-27 | 2021-08-06 | 原相科技股份有限公司 | Optical mouse and parameter correction method thereof |
| US10775868B2 (en) * | 2018-10-26 | 2020-09-15 | Pixart Imaging Inc. | Navigation device with low power consumption |
| JP7472656B2 (en) * | 2020-06-02 | 2024-04-23 | オムロン株式会社 | Switches and operating devices |
| CN113340568B (en) * | 2021-05-08 | 2024-04-30 | 深圳市汇春科技股份有限公司 | Optical mouse testing method and device, electronic equipment and storage medium |
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