CN103309469A - Displacement detection device and operation method thereof - Google Patents
Displacement detection device and operation method thereof Download PDFInfo
- Publication number
- CN103309469A CN103309469A CN2012100654425A CN201210065442A CN103309469A CN 103309469 A CN103309469 A CN 103309469A CN 2012100654425 A CN2012100654425 A CN 2012100654425A CN 201210065442 A CN201210065442 A CN 201210065442A CN 103309469 A CN103309469 A CN 103309469A
- Authority
- CN
- China
- Prior art keywords
- light source
- displacement
- picture frame
- operating
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a displacement detection device which comprises an image sensor, a light source, a light source control unit and a processing unit. The image sensor acquires an image frame at the sampling frequency. The light source provides light required for the image sensor to acquire the image frame in a speed mode. The light source control unit controls the light source to be on at the light-emitting frequency or off continuously in the speed mode. The processing unit calculates the displacement according to the image frame acquired when the light source is on, as the estimated displacement when the light source is off. The invention also provides an operation method of the displacement detection device.
Description
Technical field
The present invention relates to a kind of interactive device, particularly a kind of displacement detector and method of operating thereof.
Background technology
Because wireless optical mouse does not have the signal wire that connects main frame, thereby has significantly promoted its operation ease, during especially as the input media of removable computer, replaced gradually especially traditional wire mouse.Yet, wireless optical mouse generally comprises the active members such as light source, digital signal processor (Digital Signal Processor), imageing sensor and wireless transmission unit, its whole power consumption is large, thereby has the problem of battery deficiency.
For head it off, known can be by the Image Acquisition frequency that changes imageing sensor and the consumption electric energy that the mode of time shutter reduces wireless optical mouse; Yet in actual use, this kind mode has following point at least: owing to time shutter of imageing sensor can change along with the translational speed of optical mouse, cause the overall brightness of the image that obtains can produce larger change, and have relatively poor stability.
The mode of another kind of known reduction wireless optical mouse power consumption is the glow frequency of light source for a change.For example with reference to shown in Figure 1, according to the displacement of wireless optical mouse, the glow frequency of light source for example can be fixed as respectively 3000/second, 1500/second or 1000/second.Yet in this mode of operation, every kind of glow frequency still can consume different electric currents, and for example the electric current of fast mode consumption can be 3 times of low-speed mode.
Given this, the present invention also proposes a kind of displacement detector and method of operating thereof, and it can change according to different displacements the light-emitting mode of light source, with the integral body power consumption of further reduction displacement detector.
Summary of the invention
The purpose of this invention is to provide a kind of displacement detector and method of operating thereof, it changes light source according to different displacements or translational speed light-emitting mode makes every kind of light-emitting mode have identical low consumption electric current.
The invention provides a kind of displacement detector, this displacement detector comprises imageing sensor, light source, light source control unit and processing unit.Described imageing sensor obtains picture frame with sampling frequency.Required light when described light source provides described imageing sensor to obtain picture frame with at least one velocity mode.Described light source control unit is lighted with glow frequency with the described light source of described speed-mode control or is extinguished continuously.The picture frame displacement calculating amount that described processing unit obtains during according to described light source igniting is used as described light source and estimates displacement during extinguishing.
The present invention also provides a kind of method of operating of displacement detector, and this method of operating comprises the following step: utilize imageing sensor to obtain picture frame with sampling frequency; The control light source is lighted with at least one glow frequency or is extinguished continuously; The picture frame displacement calculating amount of obtaining when utilizing processing unit according to described light source igniting is used as described light source and estimates displacement during extinguishing.
The present invention also provides a kind of method of operating of displacement detector, and this method of operating comprises the following step: utilize imageing sensor to obtain picture frame with sampling frequency; Utilize light source synchronous to light continuously in described sampling frequency; The picture frame displacement calculating amount of utilizing processing unit to obtain according to described imageing sensor also determines the velocity mode of described light source according to this; Controlling described light source lights with described velocity mode or extinguishes continuously; The picture frame displacement calculating amount of obtaining when utilizing described processing unit according to described light source igniting is used as described light source and estimates displacement during extinguishing.
In the embodiment of the present invention, described light source is opened picture frame corresponding to N and is lighted continuously, then opens picture frame corresponding to M and extinguishes continuously.
In a kind of embodiment, described displacement detector also comprises transmission interface unit and exports described displacement and the described displacement of estimating with the report rate, and wherein (M+N) is preferably less than or equal to a frame per second of the described light source merchant divided by described report rate gained; And N is preferably greater than and equals 4.
In a kind of embodiment, described processing unit also calculates the image quality that described N opens picture frame, when described image quality not good (for example being lower than the quality threshold value), increases the numerical value of N.
In a kind of embodiment, to light number of times all identical for the per second of described light source under the different velocity modes, and under the low-speed mode numerical optimization of N greater than the numerical value of N under the fast mode.
In a kind of embodiment, described processing unit is also according to the described velocity mode of the instant switching of described displacement.
In displacement detector of the present invention and the method for operating thereof, because the numerical value of N can change according to the velocity mode of described light source and the image quality of picture frame, can effectively increase the counting accuracy of displacement.Because the per second of described light source is lighted the per second that number of times can be designed to be equal to the minimum speed pattern and is lighted number of times, can effectively reduce whole power consumption.
Description of drawings
Fig. 1 illustrates the Image Acquisition of known optical mouse and the schematic diagram of light source igniting.
Fig. 2 A illustrates the schematic diagram of the displacement detector of embodiment of the present invention.
Fig. 2 B illustrates the block scheme of the displacement detector of embodiment of the present invention.
Fig. 3 A illustrates the friction speed pattern of light source of the displacement detector of embodiment of the present invention.
The displacement detector that Fig. 3 B illustrates embodiment of the present invention calculates the maximum schematic diagram that can detect displacement.
Fig. 3 C illustrates in the displacement detector of embodiment of the present invention, but effective frame per second and corresponding maximum detection speed.
Fig. 4 A illustrates the Image Acquisition of displacement detector of embodiment of the present invention and the schematic diagram of light source igniting.
Fig. 4 B illustrates in the displacement detector of embodiment of the present invention, but the per second of light source is lighted number of times and corresponding maximum detection speed.
Fig. 5 A-5B illustrates the process flow diagram of method of operating of the displacement detector of embodiment of the present invention.
Description of reference numerals
10 displacement detectors, 100 housings
101 light sources, 102 light source control units
103 imageing sensors, 104 mnemons
105 processing units, 106 transmission interface unit
107,108 optical elements, 20 first images
21 reference search frames, 30 second images
31 search box I
1, I
2Picture frame
S
11-S
15Step S
21-S
27Step
S working surface H perforate
Embodiment
For allow above and other objects of the present invention, feature and advantage can be more obvious, hereinafter will cooperate accompanying drawing to elaborate.In explanation of the present invention, identical member illustrates first at this with identical symbolic representation.
Shown in Fig. 2 A and 2B, Fig. 2 A illustrates the schematic diagram of the displacement detector of embodiment of the present invention, Fig. 2 B illustrates the block scheme of the displacement detector of embodiment of the present invention, though wherein displacement detector 10 is depicted as optical mouse, the present invention is not limited to this; For example displacement detector 10 also can be optics finger navigation.
Described displacement detector 10 comprises light source 101, light source control unit 102, imageing sensor 103, mnemon 104, processing unit 105 and transmission interface unit 106; In other embodiment, described displacement detector 10 also can comprise optical element 107, this optical element 107 is used for adjusting the illumination zone of described light source 101, and optical element 108, and this optical element 108 is used for adjusting the light receiving efficiency of described imageing sensor 103.
Described imageing sensor 103 for example can be that ccd image sensor, cmos image sensor or other are used for obtaining the sensing device of image document, and it obtains picture frame with fixing sampling frequency.
Described light source 101 for example can be light emitting diode or laser diode, send infrared light or invisible light with at least one velocity mode, required light when being used for providing described imageing sensor 103 to obtain picture frame for example is the perforate H illumination work surface S on the bottom surface of the housing 100 by described displacement detector 10 herein.In addition, when described displacement detector 10 was optics finger navigation, 101 of described light sources were used for the illumination finger surface.
Described light source control unit 102 is used for controlling described light source 101 and lights with at least one glow frequency with different velocity modes or extinguish continuously; For example the described light source 101 of control is luminous corresponding to the sampling frequency of (can be synchronous or asynchronous) described imageing sensor 103 under chosen velocity mode, with after opening picture frame corresponding to N and lighting continuously, then opening picture frame corresponding to M extinguishes continuously, so repeatable operation is to save the power consumption of light source 101 during opening picture frame at described M, and wherein the per second of described light source 101 is lighted number of times and is preferably designed for identical (after being specified in) under the friction speed pattern.
Described mnemon 104 couples described processing unit 105, is used for storing displacement (speed) threshold value, quality threshold value and other systematic parameter.
Described processing unit 105 for example can come displacement calculating amount or translational speed according to the correlativity (correlation) between two images, and compare present displacement and described displacement threshold value (or at present translational speed and described threshold speed), and control by 102 pairs of described light sources 101 of described light source control unit according to comparative result, to carry out the switching of friction speed pattern; Wherein, described processing unit 105 is so long as can process the processor of image document and get final product, and for example digital signal processor (DSP) there is no specific limited.In the embodiment of the present invention, the picture frame displacement calculating amount that described processing unit 105 obtains when lighting according to described light source 101 is used as described light source 101 and estimates displacement during extinguishing.For example in a kind of embodiment, described processing unit 105 can be opened picture frame displacement calculating amount or average displacement amount according to described N, to open the displacement of estimating during the picture frame as described M, so just need to be during M open picture frame the displacement calculating amount; That is the picture frame that obtains during described light source 101 extinguishes can be given up.Described processing unit 105 can also carry out according to described displacement the switching of described velocity mode.In addition, described processing unit 105 can also determine the numerical value of N, for example calculates the image quality that described N opens picture frame, increases the numerical value of N when described image quality is lower than the quality threshold value; That is, when image quality is not good, preferably obtain continuously more effective image frame to avoid obtaining the wrong threshold value of estimating; Wherein, the definition of described image quality has been known, therefore repeat no more in this.In addition, described processing unit 105 can also have larger N value at low-speed mode than fast mode by the described light source 101 of described light source control unit 102 controls.
Described transmission interface unit 106 with report rate (report rate) with action message (for example, displacement, average displacement amount or translational speed) and (for example estimate action message, estimate displacement, estimate the average displacement amount or estimate translational speed) output to external electronic wired or wirelessly, computer system or comprise the electronic system of display unit for example is to carry out corresponding control; Wherein, described transmission interface unit 106 for example can be wired or wireless transport interface, and its report rate for example is 125/second or 120/second, but the present invention is not limited to this.
At first, the friction speed pattern of described light source 101 is described in the displacement detector 10 of the present invention.For example with reference to shown in Fig. 3 A, it illustrates in the embodiment of the present invention, the schematic diagram of three kinds of velocity modes of the Image Acquisition of described imageing sensor 103 and described light source 101, and wherein every kind of velocity mode is all to there being glow frequency.For example in the present embodiment, suppose the light period of the light period of image sampling cycle=1/3000 second, fast mode=1/3000 second, middle fast mode=1/1500 second, the light period of low-speed mode=1/1000 second; Wherein said light period is the integral multiple in described image sampling cycle and forms synchronously, that is during the Image Acquisition of described imageing sensor 103, described light source 101 provides light required when obtaining picture frame.By this, although described imageing sensor 103 obtains image with the fixing image sampling cycle, all do not light when obtaining but the control that is subject to described light source control unit 102 owing to described light source 101 is relatively each picture frame, therefore the effective image that obtains of described imageing sensor 13 light period that is subject to described light source 101 is controlled; Wherein, described effective image for example is that solid arrow among the figure (expression light source luminescent) is represented, and that dotted arrow does not represent light source is luminous and so that imageing sensor 103 can't get access to effective image (being invalid image).105 effective images that obtain based on described imageing sensor 103 of described processing unit carry out the calculating of displacement and translational speed.Scrutable is that the numerical value of disclosed image sampling cycle (sampling frequency), light period (glow frequency) only is exemplary among Fig. 3 A, is not for limiting the present invention.
Shown in Fig. 3 A and 3B, but maximum displacement and the maximum detection speed that described processing unit 105 can detect is described then between two effective images.In a kind of embodiment, two effective images are obtained in lighting of the relatively described light source 101 of described imageing sensor 103, for example the first image 20 and the second image 30.Described processing unit 105 is selected reference search frames 21 at described the first image 20, and in described the second image 30 selected search boxes 31.Described processing unit 105 then calculates the present displacement of distance to detect as described displacement detector 10 of 31 of described reference search frame 21 and described search boxes.For the purpose of simplifying the description, only consider X-direction displacement (i.e. horizontal direction among the figure) among Fig. 3 B, described displacement can comprise X-direction component and Y direction component during practical operation.The maximum displacement that can detect is to be positioned at the leftmost side of described the first image 20 and situation that described search box 31 is positioned at described the second image 30 rightmost sides according to described reference search frame 21 to calculate and obtain.In this embodiment, suppose that every picture frame (being the sensor array size of imageing sensor) has 16 * 16 pixels, described search box 31 and described reference search frame 21 are assumed to be 8 * 8 pixels, and then can to detect displacement be 8 pixel distances (being that maximum can detect number of pixels) to the maximum of described processing unit 105 between continuous two effective images.Because described maximum can detect displacement and be determined by the size of every frame, thereby not affected by the glow frequency of described light source 101, that is described maximum can to detect displacement all identical under the various velocity modes of described light source 101.
Hence one can see that, and when the displacement of described displacement detector 10 between continuous two effective images surpassed 8 pixel distances, described light source 101 must shorten light period, and described like this processing unit 105 can detect displacement; In other words, when the displacement of described displacement detector 10 can detect displacement above described maximum, described processing unit 105 can't calculate described displacement, thereby must shorten the light period of light source 101 so that 10 normal runnings of described displacement detector.Therefore, described processing unit 105 can enter the friction speed pattern according to the described light source 101 of the displacement that calculates (for example aforementioned displacements amount) control, for example fast mode, middle fast mode or low-speed mode.Scrutable is that this explanation is enumerated all setting values and only is one embodiment of the present invention, is not for limiting the present invention.
Yet, but the maximum detection speed under the friction speed pattern is not identical.For example, suppose that each Pixel Dimensions is 40 * 40 microns, but then the maximum detection speed=maximum under every kind of pattern can detect number of pixels * each Pixel Dimensions * frame per second.Therefore, but the maximum detection speed of fast mode=8 * 40 * 3000=37.8 inch per second (IPS); In like manner, but the maximum detection speed of middling speed and low-speed mode shown in Fig. 3 C, wherein effectively frame per second is the inverse of the light period of described light source 101.
In order further to reduce the power consumption of the light source 101 of displacement detector 10, the present invention so make fast mode and middle fast mode in the per second of light source light number of times and be equal to low-speed mode, therefore described light source 101 can minimum per second be lighted number of times and is lighted, with effective reduction power consumption.
Shown in Fig. 4 A, it illustrates the Image Acquisition of displacement detector 10 of embodiment of the present invention and the schematic diagram of light source igniting.At first determine the velocity mode of described light source 101, described imageing sensor 103 obtains picture frame with fixing sampling frequency (for example per second is 3000), and 101 of described light sources are synchronized with described sampling frequency and light continuously.The picture frame displacement calculating amount that described processing unit 105 obtains according to described imageing sensor 103, and determine velocity mode according to the comparative result of described displacement and at least one displacement threshold value, for example at a high speed, middling speed or low-speed mode.Then, described processing unit 105 notifies described light source control unit 102 luminous with different illumination modes with the described light source 101 of described speed-mode control, for example open corresponding to N that picture frame is lighted is continuously opened effective image so that described imageing sensor 103 obtains N continuously during described N opens picture frame, then control described light source 101 and open picture frame corresponding to M and extinguish continuously, thereby described imageing sensor 103 can't obtain effective image during described M opens picture frame.For example among Fig. 4 A, I
1The effective image of picture frame, I are opened in expression corresponding to N
2The invalid image of picture frame is opened in expression corresponding to M; For example among Fig. 4 A, after light source described in the fast mode 101 is lighted 4 continuously, follow continuous 8 and do not light; After light source 101 is lighted 8 continuously described in the middle fast mode, follow continuous 4 and do not light; 101 of light sources described in the low-speed mode are kept fixedly glow frequency and are lighted.Scrutable is that the number of lighting (N) and extinguishing (M) of light source 101 described in Fig. 4 A is not for limiting the present invention only for exemplary.
Described processing unit 105 is for example opened picture frame displacement calculating amount or average displacement amount according to described N according to effective image displacement calculating amount, and described displacement is opened the displacement of estimating during the picture frame as described M.Preferably, the number of described N is more than or equal to 4, so that described processing unit 105 can correctly be estimated the described estimation displacement during M opens picture frame.In a kind of embodiment, the numerical value of N is greater than the numerical value of N under the fast mode, to increase system stability under the low-speed mode.In addition, because M opens the restriction that length during the picture frame is subject to the report rate of described transmission interface unit 106, therefore preferably be lower than 8 milliseconds (when the report rate is 125 times/second) during described M opens picture frame, perhaps (M+N) frame per second (frame per second described herein refers to described light source 101 normal two inverses of lighting continuously the time interval under the velocity mode) of preferably being lower than described light source 101 and the described report rate merchant of gained of being divided by is to avoid correctly calculating described displacement; For example working as the report rate is 125 times/second, and (M+N) preferably is lower than 25 under the fast mode, and (M+N) preferably is lower than 13 under the middle fast mode, and wherein said numerical value only is exemplary.
Therefore shown in Fig. 4 B, by the aforesaid operations method, the per second of described light source 101 is lighted number of times and is 1000, and the power consumption stream of described light source 101 is all identical under every kind of velocity mode, and total power consumption stream to compare Fig. 3 A lower.In addition, owing to remaining during N opens picture frame according to original frame per second, described imageing sensor 103 takes a sample, therefore but the maximum detection speed still can be kept identical with Fig. 3 C.
The method of operating of the displacement detector of embodiment of the present invention comprises the following step: utilize imageing sensor to obtain picture frame with sampling frequency; The control light source is lighted with at least one glow frequency or is extinguished continuously; The picture frame displacement calculating amount of obtaining is used as described light source and estimates displacement during extinguishing when utilizing processing unit according to described light source igniting.
Shown in Fig. 4 A and 5A, for example in a kind of embodiment, the method for operating of displacement detector of the present invention can comprise the following step: utilize described imageing sensor 103 to obtain picture frame (step S with fixing sampling frequency
11); Control described light source 101 luminous with glow frequency, light continuously to open picture frame corresponding to N, make described imageing sensor 103 obtain continuously N and open the effective image frame; Then open picture frame corresponding to M and extinguish continuously, open power consumption (the step S of described light source 101 during the picture frame to save described M
12); With utilize described processing unit 105 to open effective image frame displacement calculating amount according to described N to be used as described M and to open and estimate displacement (step S during the picture frame
13).In the present embodiment, N is preferably greater than and equals 4.Described method of operating also can comprise the following step: utilize described transmission interface unit 106 to export described displacement and the described displacement of estimating with the report rate, wherein (M+N) is less than or equal to the frame per second of described light source 101 merchant divided by described report rate gained, to avoid obtaining wrong displacement (step S
14); With utilize described processing unit 105 to open picture frame computed image quality according to described N, when described image quality is lower than the quality threshold value, increase the numerical value of N, to increase counting accuracy (step S
15).
The method of operating of the displacement detector of another embodiment of the present invention comprises the following step: utilize imageing sensor to obtain picture frame with sampling frequency; Utilize light source synchronous to light continuously in described sampling frequency; The picture frame displacement calculating amount of utilizing processing unit to obtain according to described imageing sensor also determines the velocity mode of described light source according to this; Controlling described light source lights with described velocity mode or extinguishes continuously; The picture frame displacement calculating amount of obtaining is used as described light source and estimates displacement during extinguishing when utilizing described processing unit according to described light source igniting.
Shown in Fig. 4 A and 5B, for example in a kind of embodiment, the light source 101 of described displacement detector has a plurality of velocity modes, and the method for operating of displacement detector of the present invention can comprise the following step: utilize described imageing sensor 103 to obtain picture frame (step S with fixing sampling frequency
21); Utilize described light source 101 to be synchronized with described sampling frequency and light continuously (step S
22); The picture frame displacement calculating amount of utilizing described processing unit 105 to obtain according to described imageing sensor 103 also determines velocity mode (the step S of described light source 101 according to this
23); Control described light source 101 luminous with described velocity mode, light continuously to open picture frame corresponding to N, make described imageing sensor 103 obtain continuously N and open the effective image frame; Then open picture frame corresponding to M and extinguish continuously, open power consumption (the step S of described light source 101 during the picture frame to save described M
24); With utilize described processing unit 105 to open effective image frame displacement calculating amount according to described N to be used as described M and to open and estimate displacement (step S during the picture frame
25).In this embodiment, described processing unit 105 also can be according to the described velocity mode of the instant switching of described displacement.In the present embodiment, the numerical optimization of N is greater than the numerical value of N under the fast mode, to increase system stability under the low-speed mode.Similarly, N is preferably greater than and equals 4, to increase the degree of accuracy of calculating described displacement.Present embodiment also can comprise the following step: utilize described transmission interface unit 106 to export described displacement and the described displacement of estimating with the report rate, wherein (M+N) is less than or equal to the frame per second of described light source 101 merchant divided by described report rate gained, to avoid obtaining wrong displacement (step S
26); With utilize described processing unit 105 to open picture frame computed image quality according to described N, and when described image quality is lower than the quality threshold value, increase the numerical value of N, to increase counting accuracy (step S
27).Should be noted that step S
22 Middle light source 101 can be lighted with the arbitrary speed mode continuous, for example lights with the minimum speed mode continuous that 2-3 opens or more than 3.In the embodiment of the present invention, the picture frame that described effective image frame is acquired when referring to relative light source igniting.
In the embodiment of the present invention, described light source 101 is then opened picture frame corresponding to M and is extinguished continuously after opening picture frame and light continuously corresponding to N; The picture frame displacement calculating amount that described processing unit 105 obtains when lighting according to described light source 101 as the reference displacement, described can be used as displacement during described light source extinguishes with reference to displacement with described displacement.
In sum, although the known optical mouse can be saved power consumption by changing Image Acquisition frequency or light source frequency, have respectively poor stability and power consumption and flow the problems such as fixing.The present invention also proposes a kind of displacement detector (Fig. 2 A and 2B) and method of operating (Fig. 5 A and 5B) thereof, and it all has identical power consumption stream under the friction speed pattern, have preferred stability and can effectively reduce the total consumption electric current.
Although the present invention is open with aforementioned embodiments, so it is not that any the technical staff in the technical field of the invention without departing from the spirit and scope of the present invention, can make various changes or modifications for restriction the present invention.Therefore protection scope of the present invention should be with being as the criterion that appending claims was defined.
Claims (22)
1. displacement detector, this displacement detector comprises:
Imageing sensor obtains picture frame with sampling frequency;
Light source, required light when providing described imageing sensor to obtain picture frame with at least one velocity mode;
Light source control unit is lighted with glow frequency or is extinguished continuously with the described light source of described speed-mode control; With
Processing unit, the picture frame displacement calculating amount of obtaining during according to described light source igniting are used as described light source and estimate displacement during extinguishing.
2. displacement detector according to claim 1, wherein said light source are then opened picture frame corresponding to M and are extinguished continuously after opening picture frame and light continuously corresponding to N.
3. displacement detector according to claim 2, wherein N is more than or equal to 4.
4. displacement detector according to claim 2, this displacement detector also comprises transmission interface unit, this transmission interface unit is exported described displacement and the described displacement of estimating with the report rate, and wherein (M+N) is less than or equal to the frame per second of the described light source merchant divided by described report rate gained.
5. displacement detector according to claim 2, wherein said velocity mode comprises fast mode and low-speed mode, and described processing unit also switches described velocity mode according to described displacement.
6. displacement detector according to claim 5, wherein under described fast mode and described low-speed mode, it is identical that the per second of described light source is lighted number of times.
7. according to claim 5 or 6 described displacement detectors, the numerical value of N is greater than the numerical value of N under the described fast mode under the wherein said low-speed mode.
8. displacement detector according to claim 1, wherein said processing unit also calculates the image quality that described N opens picture frame, and increases the numerical value of N when described image quality is lower than the quality threshold value.
9. displacement detector according to claim 1, wherein said displacement detector is optical mouse or optics finger navigation.
10. the method for operating of a displacement detector, this method of operating comprises the following step:
Utilize imageing sensor to obtain picture frame with sampling frequency;
The control light source is lighted with at least one glow frequency or is extinguished continuously; With
The picture frame displacement calculating amount of obtaining when utilizing processing unit according to described light source igniting is used as described light source and estimates displacement during extinguishing.
11. method of operating according to claim 10, wherein said light source are then opened picture frame corresponding to M and are extinguished continuously after opening picture frame and light continuously corresponding to N.
12. method of operating according to claim 11, this method of operating also comprises the following step: utilize transmission interface unit to export described displacement and the described displacement of estimating with the report rate, wherein (M+N) is less than or equal to the frame per second of the described light source merchant divided by described report rate gained.
13. method of operating according to claim 11, wherein N is more than or equal to 4.
14. method of operating according to claim 11, this method of operating also comprises the following step: utilize described processing unit to open picture frame computed image quality according to described N, and increase the numerical value of N when described image quality is lower than the quality threshold value.
15. the method for operating of a displacement detector, this method of operating comprises the following step:
Utilize imageing sensor to obtain picture frame with sampling frequency;
Utilize light source synchronous to light continuously in described sampling frequency;
The picture frame displacement calculating amount of utilizing processing unit to obtain according to described imageing sensor also determines the velocity mode of described light source according to this;
Controlling described light source lights with described velocity mode or extinguishes continuously; With
The picture frame displacement calculating amount of obtaining when utilizing described processing unit according to described light source igniting is used as described light source and estimates displacement during extinguishing.
16. method of operating according to claim 15, this method of operating also comprises the following step: utilize described processing unit according to the described velocity mode of the instant switching of described displacement.
17. method of operating according to claim 16, wherein under different described velocity modes, it is identical that the per second of described light source is lighted number of times.
18. according to claim 16 or 17 described methods of operating, wherein said light source is then opened picture frame corresponding to M and is extinguished continuously after opening picture frame and light continuously corresponding to N.
19. method of operating according to claim 18, wherein said velocity mode comprises fast mode and low-speed mode, and under the described low-speed mode numerical value of N greater than the numerical value of N under the described fast mode.
20. method of operating according to claim 18, wherein N is more than or equal to 4.
21. method of operating according to claim 18, this method of operating also comprises the following step: utilize described processing unit to open picture frame computed image quality according to described N, and increase the numerical value of N when described image quality is lower than the quality threshold value.
22. method of operating according to claim 18, this method of operating also comprises the following step: utilize transmission interface unit to export described displacement and the described displacement of estimating with the report rate, wherein (M+N) is less than or equal to the frame per second of the described light source merchant divided by described report rate gained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210065442.5A CN103309469B (en) | 2012-03-13 | 2012-03-13 | Displacement detector and method of operating thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210065442.5A CN103309469B (en) | 2012-03-13 | 2012-03-13 | Displacement detector and method of operating thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103309469A true CN103309469A (en) | 2013-09-18 |
| CN103309469B CN103309469B (en) | 2016-04-27 |
Family
ID=49134769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210065442.5A Active CN103309469B (en) | 2012-03-13 | 2012-03-13 | Displacement detector and method of operating thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103309469B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104915023A (en) * | 2014-01-27 | 2015-09-16 | 罗技欧洲公司 | Input device with hybrid tracking |
| CN107704107A (en) * | 2016-08-08 | 2018-02-16 | 原相科技股份有限公司 | Physiology detection apparatus and its operating method |
| US10905340B2 (en) | 2012-03-01 | 2021-02-02 | Pixart Imaging Inc. | Physiological detection device |
| CN114442821A (en) * | 2020-10-20 | 2022-05-06 | 原相科技股份有限公司 | Optical navigation device, optical sensor device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1477592A (en) * | 2002-07-30 | 2004-02-25 | 艾勒博科技股份有限公司 | Optical mouse and method for avoiding error action |
| KR100648517B1 (en) * | 2005-12-09 | 2006-11-27 | 주식회사 애트랩 | Optical navigation device and operating method thereof |
| US20070268275A1 (en) * | 1998-01-26 | 2007-11-22 | Apple Inc. | Touch sensing with a compliant conductor |
| CN101813994A (en) * | 2010-04-16 | 2010-08-25 | 华映视讯（吴江）有限公司 | Touch position identifying method |
| US20110316782A1 (en) * | 2010-06-28 | 2011-12-29 | Hon Hai Precision Industry Co., Ltd. | Optical mouse with light source and light source switching method thereof |
-
2012
- 2012-03-13 CN CN201210065442.5A patent/CN103309469B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070268275A1 (en) * | 1998-01-26 | 2007-11-22 | Apple Inc. | Touch sensing with a compliant conductor |
| CN1477592A (en) * | 2002-07-30 | 2004-02-25 | 艾勒博科技股份有限公司 | Optical mouse and method for avoiding error action |
| KR100648517B1 (en) * | 2005-12-09 | 2006-11-27 | 주식회사 애트랩 | Optical navigation device and operating method thereof |
| CN1979396A (en) * | 2005-12-09 | 2007-06-13 | 艾勒博科技股份有限公司 | Optical navigation device and method of operating the same |
| CN101813994A (en) * | 2010-04-16 | 2010-08-25 | 华映视讯（吴江）有限公司 | Touch position identifying method |
| US20110316782A1 (en) * | 2010-06-28 | 2011-12-29 | Hon Hai Precision Industry Co., Ltd. | Optical mouse with light source and light source switching method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10905340B2 (en) | 2012-03-01 | 2021-02-02 | Pixart Imaging Inc. | Physiological detection device |
| CN104915023A (en) * | 2014-01-27 | 2015-09-16 | 罗技欧洲公司 | Input device with hybrid tracking |
| CN104915023B (en) * | 2014-01-27 | 2018-01-16 | 罗技欧洲公司 | Use the input equipment of combined tracking |
| CN107704107A (en) * | 2016-08-08 | 2018-02-16 | 原相科技股份有限公司 | Physiology detection apparatus and its operating method |
| CN107704107B (en) * | 2016-08-08 | 2020-12-08 | 原相科技股份有限公司 | Physiological detection device and operation method thereof |
| CN114442821A (en) * | 2020-10-20 | 2022-05-06 | 原相科技股份有限公司 | Optical navigation device, optical sensor device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103309469B (en) | 2016-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI524220B (en) | Displacement detection device and operating methof thereof | |
| US8462115B2 (en) | Motion estimation device and power saving method thereof | |
| US10313570B2 (en) | Dynamic conservation of imaging power | |
| JP7021885B2 (en) | Distance measuring device | |
| CN104604221B (en) | Equipment for generating depth image | |
| US9046935B2 (en) | Motion estimation device and power saving method thereof | |
| JP6270813B2 (en) | Motion sensor device having a plurality of light sources | |
| US20140300548A1 (en) | Navigation device and power saving method thereof | |
| EP3101893B1 (en) | Depth information extracting device and method | |
| CN103309469B (en) | Displacement detector and method of operating thereof | |
| KR102022970B1 (en) | Method and apparatus for sensing spatial information based on vision sensor | |
| CN103257722A (en) | Optical navigation device | |
| TWI471767B (en) | Displacement detection device | |
| TWI530828B (en) | Optical mouse including thermal sensor | |
| US9618609B2 (en) | Optical sensor and electronic device | |
| KR20210130778A (en) | Sensor system architecture with feedback loop and multiple power states | |
| CN107277383B (en) | Optical detection apparatus and its synchronization adjustment method | |
| CN103123536A (en) | Displacement detection device and operation method thereof | |
| CN103309516A (en) | Optical touch device and detection method thereof | |
| CN105988599B (en) | Navigation device capable of adjusting sampling period | |
| KR101512141B1 (en) | Smart lighting control device and method based direction of human motion | |
| KR20120000234A (en) | The method of auto-exposure control for white light 3d scanner using an illuminometer | |
| US10942607B2 (en) | Manipulation detection device and video display system that are capable detecting an object on a video display surface | |
| CN109981993B (en) | Depth camera projector power consumption control method and application thereof | |
| CN107704107B (en) | Physiological detection device and operation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |