CN102654802B - Detecting method for manipulation object and touch control device - Google Patents
Detecting method for manipulation object and touch control device Download PDFInfo
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- CN102654802B CN102654802B CN201110057934.5A CN201110057934A CN102654802B CN 102654802 B CN102654802 B CN 102654802B CN 201110057934 A CN201110057934 A CN 201110057934A CN 102654802 B CN102654802 B CN 102654802B
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Abstract
The invention discloses a detecting method for a manipulation object and a touch control device. According to the detecting method, the manipulation object having fingerprint characteristics and arranged on the operation interface of the touch control device can be detected. The detecting method comprises the steps of: retrieving an image on the operation interface through an image sensor and converting the retrieved image into signals indicated by a frequency domain through a frequency conversion function; and then, analyzing the signal located in a medium and high frequency signal region in the signals indicated by the frequency domain to generate a first signal or a second signal according to the distribution condition of the signals indicated by the frequency domain, wherein the first signal represents the existence of the manipulation object having fingerprint characteristics on the operation interface, and the second signal represents the non-existence of the manipulation object having fingerprint characteristics on the operation interface.
Description
Technical field
The present invention about a kind of contactor control device, particularly a kind of detection method and contactor control device manipulating thing.
Background technology
In modern's life, considerable role played the part of by computing machine, in order to computing machine communicate information or the function that performs on computing machine, people are usually through different input medias, information or instruction are imported into in computing machine, common input media comprises mouse, keyboard, pointer etc.
Before mouse invention, user often needs the function that could be operated computing machine by the specific instruction of input through keyboard, from nineteen sixty-eight American scientist Douglas Engelbart (Douglas Englebart) after California has made first mouse, user just starts button on a mouse and roller devices operation computing machine, and need not by the loaded down with trivial details instruction of input through keyboard.
Computer industry develops rapidly in recent years, in order to allow everybody use computing machine can more convenient, easily carry, from before the Mechanical mice that uses develop into optical mouse, and then develop touch control mouse.
Touch control mouse is by the light source by mouse body inner bottom side opening, such as: light emitting diode (light emitting diode, LED), irradiate in operation interface, then the finger image on operation interface is captured with image sensor (image sensor), a corresponding image processing mechanism, by the change of finger image captured continuously, convert displacement to, and the suitable amount of movement reacting on cursor on computer screen and direction.But, due to external environment image also can capture by image sensor, thus cause track judge by accident or shake situation occur.
Summary of the invention
In view of above problem, the invention reside in and a kind of detection method and the contactor control device that manipulate thing are provided, use the problem solved existing for prior art.
According to the detection method of the manipulation thing that one embodiment of the invention provide, be applicable to a contactor control device.The detection method of this manipulation thing is in order to be detected on the manipulation thing with fingerprint characteristic on the operation interface of contactor control device.
The detection method of this manipulation thing comprises: with the image on an image sensor acquisition operation interface of contactor control device; A frequency transform function is utilized to be the signal represented with frequency field by the video conversion captured; And analyze the signal being positioned at high frequency signal region in the signal that represents with frequency field, produce one first signal and a secondary signal with the distribution scenario selectivity according to the signal represented with frequency field.
Wherein, the first signal representative is positioned at manipulation thing operation interface existing and has fingerprint characteristic, and secondary signal represents the manipulation thing not existing on operation interface and have fingerprint characteristic.
The detection method of described manipulation thing, wherein, this analytical procedure comprises:
Calculate the signal energy being positioned at high frequency signal region in this signal represented with this frequency field;
This signal energy relatively calculated and a threshold value; And
When this signal energy is greater than this threshold value, produce this first signal.
The detection method of described manipulation thing, wherein, this calculation procedure comprises:
Be N × N number of region by this signal halves represented with this frequency field, wherein N be greater than 1 integer; And
Calculate this signal energy in the region in this N × N number of region beyond upper left corner K × K region, wherein K is the positive integer being less than N.
The detection method of described manipulation thing, wherein, this analytical procedure comprises:
Calculate the quantity being positioned at the signal in high frequency signal region in this signal represented with this frequency field;
This quantity relatively calculated and a threshold value;
When this quantity is greater than this threshold value, produce this first signal; And
When this quantity is not more than this threshold value, produce this secondary signal.
The detection method of described manipulation thing, wherein, this frequency transform function is DFT (Discrete Fourier Transform, discrete Fourier change) function, DCT (Discrete Cosine Transform, one of discrete cosine transform) in function and DWT (Discrete Wavelet Transform, discrete wavelet is changed) function.
The detection method of described manipulation thing, wherein, also comprises:
When be positioned on this operation interface exist there is this manipulation thing of this fingerprint characteristic time, respond this first signal and utilize this image captured to calculate the displacement of this manipulation thing.
The detection method of described manipulation thing, wherein, also comprises:
When be positioned at this operation interface exists there is this manipulation thing of this fingerprint characteristic time, utilize this first signal to cause a displacement transducer of this contactor control device to export corresponding to the displacement of the motion track of this manipulation thing.
According to the contactor control device that one embodiment of the invention provide, it comprises operation interface, image sensor, processing unit and track detection device.
Image sensor respective operations interface is arranged, and processing unit is connected to image sensor, and displacement transducer is connected to processing unit.Image sensor is in order to capture the image on operation interface.Processing unit by analyze image sensor the frequency content of image that captures judge whether operation interface has the manipulation thing with fingerprint characteristic.Track detection device then can be detected on the motion track of manipulation thing operation interface with fingerprint characteristic.
Described contactor control device, wherein, this processing unit utilizes a frequency transform function to be the signal represented with a frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the signal energy being positioned at a high frequency signal region in this signal represented with this frequency field.
Described contactor control device, wherein, this processing unit will be positioned at this signal energy in this high frequency signal region compared with a threshold value, and when this signal energy is greater than this threshold value, is identified in this manipulation thing this operation interface existing and has this fingerprint characteristic.
Described contactor control device, wherein, this processing unit utilizes a frequency transform function to be the signal represented with a frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the quantity of the signal being positioned at a high frequency signal region in this signal represented with this frequency field.
Described contactor control device, wherein, this processing unit will be positioned at this quantity of this signal in this high frequency signal region compared with a threshold value, and when this quantity is greater than this threshold value, is identified in this manipulation thing this operation interface existing and has this fingerprint characteristic.
Described contactor control device, wherein, when on this operation interface, existence has this manipulation thing of this fingerprint characteristic, this processing unit activates this track detection device, to detect the motion track of this manipulation thing.
Described contactor control device, wherein, this track detection device is a displacement transducer.
Described contactor control device, wherein, this track detection device is an image sensor.
Contactor control device provided by the present invention according to another embodiment of the present invention, it comprises operation interface, image sensor and processing unit.
Image sensor respective operations interface is arranged, and processing unit is connected to image sensor, and displacement transducer is connected to processing unit.Image sensor is in order to capture the image on operation interface.Processing unit then by analyze image sensor the frequency content of image that captures judge whether operation interface has the manipulation thing with fingerprint characteristic, and when existence has the manipulation thing of fingerprint characteristic on operation interface, utilize the eiconometer captured to calculate the displacement of manipulation thing.
In addition, the distribution scenario of signal is by calculating the quantity of the signal energy being positioned at high frequency signal region or the signal being positioned at high frequency signal region and the value calculated being judged compared with the threshold value preset.
Described contactor control device, wherein, this processing unit utilizes a frequency transform function to be the signal represented with a frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the signal energy being positioned at high frequency signal region in this signal represented with this frequency field.
Described contactor control device, wherein, this processing unit will be positioned at this signal energy in this high frequency signal region compared with a threshold value, and when this signal energy is greater than this threshold value, is identified in this manipulation thing this operation interface existing and has this fingerprint characteristic.
Described contactor control device, wherein, this processing unit utilizes a frequency transform function to be the signal represented with a frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the quantity of this signal being positioned at a high frequency signal region in this signal represented with this frequency field.
Described contactor control device, wherein, this processing unit will be positioned at this quantity of this signal in this high frequency signal region compared with a threshold value, and when this quantity is greater than this threshold value, is identified in this manipulation thing this operation interface existing and has this fingerprint characteristic.
In sum, according to detection method and the contactor control device of manipulation thing of the present invention, in order to be detected on the manipulation thing with fingerprint characteristic on the operation interface of contactor control device, the track shake avoiding external environment to cause can be used.Moreover, according to detection method and the contactor control device of manipulation thing of the present invention, the output of the displacement (that is, the trace information detected) of the movement corresponding to the manipulation thing with fingerprint characteristic whether can be controlled according to the existence with the manipulation thing of fingerprint characteristic on operation interface.
The above explanation about content of the present invention and the explanation of following embodiment in order to demonstration and explanation spirit of the present invention and principle, and provide patent claim of the present invention further to explain.
Accompanying drawing explanation
Fig. 1 is the Sketch figure of contactor control device according to a first embodiment of the present invention;
Fig. 2 A is the Sketch figure of contactor control device according to a second embodiment of the present invention;
Fig. 2 B is the Sketch figure of contactor control device according to a third embodiment of the present invention;
Fig. 3 is the process flow diagram of the detection method behaviour of manipulation thing according to a first embodiment of the present invention;
Fig. 4 is the process flow diagram of the detection method of manipulation thing according to a second embodiment of the present invention;
Fig. 5 is the process flow diagram of the detection method of manipulation thing according to a third embodiment of the present invention;
Fig. 6 is the process flow diagram of the detection method of manipulation thing according to a fourth embodiment of the present invention;
Fig. 7 is the process flow diagram of the detection method of manipulation thing according to a fifth embodiment of the present invention;
Fig. 8 is the process flow diagram of the detection method of manipulation thing according to a sixth embodiment of the present invention;
Fig. 9 is the process flow diagram of the detection method of manipulation thing according to a seventh embodiment of the present invention.
Wherein, Reference numeral:
200 contactor control devices
210 operation interfaces
220 image sensors
230 processing units
240 displacement transducers
250 first image sensors
260 second image sensors
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Fig. 1 is the Sketch figure of contactor control device according to a first embodiment of the present invention.
With reference to Fig. 1, contactor control device 200 comprises operation interface 210, image sensor 220 and processing unit 230.Image sensor 220 respective operations interface 210 is arranged, and processing unit 230 then connects image sensor 220.
Image sensor 220 is in order to capture the image on operation interface 210.Further, processing unit 230 by analyze image sensor 220 the frequency content of image that captures to judge whether operation interface 210 has the manipulation thing with fingerprint characteristic.
In this, contactor control device 200 can be undertaken manipulating the existence detection of thing by single processing unit 230 and motion track detects.
In other words, under normal operation, processing unit 230 can utilize image sensor 220 the eiconometer that captures calculate the displacement of manipulation thing.
In addition, with reference to Fig. 2 A, contactor control device 200 also can carry out by processing unit 230 the existence detection manipulating thing, and arranges a track detection device in addition, such as displacement transducer 240 connection handling unit 230, and carry out by displacement transducer 240 the motion track detection manipulating thing.
That is, under normal operation, displacement transducer 240 can utilize image sensor 220 the Image detection that captures there is the motion track of the manipulation thing of fingerprint characteristic, and produce the displacement of the motion track corresponding to manipulation thing.
In this, the existence that contactor control device 200 can utilize the detection method of manipulation thing to carry out manipulating thing detects.
With reference to Fig. 2 B, contactor control device 200 comprises operation interface 210, first image sensor 250, second image sensor 260 and processing unit 230.First image sensor 250 respective operations interface 210 is arranged, and processing unit 230 then connects the first image sensor 250 and the second image sensor 260 respectively.In this embodiment, track detection device is the second image sensor 260.
First image sensor 250 is in order to capture the image on operation interface 210, further, processing unit 230 by analyze the first image sensor 250 the frequency content of image that captures to judge whether operation interface 210 has the manipulation thing with fingerprint characteristic.Second image sensor 260 according to the first image sensor 250 the image that captures there is with sensing the motion track of the manipulation thing of fingerprint characteristic, and produce corresponding control signal to displacement processing unit 230, produce corresponding motion track.Second image sensor 260 by connecting the first image sensor 250, or via processing unit 230, obtain the first image sensor 250 the coherent video signal that captures.
With reference to Fig. 3, first, capture the image (step 110) on operation interface 210 with the image sensor 220 of contactor control device 200.Then, then send the image captured to processing unit 230, to be carried out the analysis of the frequency content of image by processing unit 230.In this, processing unit 230 can utilize frequency transform function by image sensor 220 the video conversion that captures be the signal (step 120) represented with frequency field, then analyze the signal (step 130) being positioned at high frequency signal region in the signal represented with frequency field, use and produce the first signal or secondary signal (step 140 or step 150) according to the distribution scenario of the signal represented with frequency field.
Wherein, the first signal represents the manipulation thing existing on operation interface 210 and have fingerprint characteristic, and secondary signal represents the manipulation thing not existing on operation interface 210 and have fingerprint characteristic.Wherein, the manipulation thing with fingerprint characteristic can be finger.Frequency transform function can be DFT (Discrete Fourier Transform, discrete Fourier change) function, DCT (Discrete Cosine Transform, discrete cosine transform) function or DWT (Discrete Wavelet Transform, discrete wavelet is changed) function.
Further, when be positioned at operation interface 210 do not exist the manipulation thing with fingerprint characteristic time, namely contactor control device 200 can not export the displacement of the motion track corresponding to manipulation thing.Otherwise, when be positioned at operation interface 210 exists there is the manipulation thing of fingerprint characteristic time, contactor control device 200 just can export the displacement of motion track corresponding to manipulation thing.
In other words, with reference to Fig. 4, when be positioned on operation interface 210 exist there is the manipulation thing of fingerprint characteristic time, processing unit 230 can respond the first signal utilize image sensor 220 the image that captures calculate the displacement of manipulation thing, and export the displacement calculating gained and carry out corresponding movement (step 142) to make the cursor in display (not shown).And when be positioned at operation interface 210 do not exist the manipulation thing with fingerprint characteristic time, processing unit 230 response secondary signal is not carried out the calculating of the displacement manipulating thing or is not exported by the displacement calculating gained, with the displacement (step 152) causing contactor control device 200 can not export the motion track corresponding to manipulation thing.
If use displacement transducer 240 as the contactor control device 200 of track detection device, with reference to Fig. 5, when be positioned at operation interface 210 exists there is the manipulation thing of fingerprint characteristic time, processing unit 230 can utilize the first signal to cause displacement transducer 240 to export the displacement (step 144) of motion track corresponding to manipulation thing.And when be positioned at operation interface 210 do not exist the manipulation thing with fingerprint characteristic time, processing unit 230 can utilize the running of secondary signal position of rest displacement sensor 240 or the output of interrupt bit displacement sensor 240, with the displacement (step 152) causing contactor control device 200 can not export the motion track corresponding to manipulation thing.And when use second image sensor 260 is as the contactor control device 200 of track detection device, when be positioned on operation interface 210 exist there is the manipulation thing of fingerprint characteristic time, processing unit 230 can utilize the first signal to cause the second image sensor 260 to export motion track corresponding to manipulation thing, and processing unit 230 then carries out the calculating of displacement according to the motion track of manipulation thing.
In this, the distribution scenario of signal in high frequency signal region is by calculating the quantity of the signal energy being positioned at high frequency signal region or the signal being positioned at high frequency signal region and the value calculated being judged compared with the threshold value preset.
To calculate the signal energy being positioned at high frequency signal region, with reference to Fig. 6, processing unit 230 can calculate the signal energy (step 132) being positioned at high frequency signal region in the signal represented with frequency field, and by the signal energy that calculates compared with the threshold value preset (step 134).When signal energy is greater than threshold value, produce the first signal (step 140), namely processing unit 230 is identified in manipulation thing operation interface existing and has fingerprint characteristic, thus causes the displacement detecting corresponding to image normally to perform.When signal energy is not more than threshold value, produce secondary signal (step 150), namely processing unit 230 is identified in manipulation thing operation interface not existing and has fingerprint characteristic, thus causes the displacement detecting corresponding to image to stop the displacement detecting or stopping output detections obtaining.
Wherein, with reference to Fig. 7, in step 132, can be first N × N number of region by the signal halves represented with frequency field, wherein N be greater than 1 integer (step 1321), then calculate the signal energy in the region in N × N number of region beyond upper left corner K × K region, wherein K is the positive integer (step 1322) being less than N.In other words, in N × N number of region, by the right side to left and from the bottom to top, being changed to from large to small of frequency.
To calculate the quantity being positioned at the signal in high frequency signal region, with reference to Fig. 8, processing unit 230 can calculate the quantity (step 136) being positioned at the signal in high frequency signal region in the signal represented with frequency field, and by the quantity of signal that calculates compared with the threshold value preset (step 138).When the quantity of signal is greater than threshold value, produce the first signal (step 140), namely processing unit 230 is identified in manipulation thing operation interface existing and has fingerprint characteristic, thus causes the displacement detecting corresponding to image normally to perform.When the quantity of signal is not more than threshold value, produce secondary signal (step 150), namely processing unit 230 is identified in manipulation thing operation interface not existing and has fingerprint characteristic, thus causes the displacement detecting corresponding to image to stop the displacement detecting or stopping output detections obtaining.
Wherein, with reference to Fig. 9, in step 132, can be first N × N number of region by the signal halves represented with frequency field, wherein N be greater than 1 integer (step 1321), then calculate the quantity of the signal in the region in N × N number of region beyond upper left corner K × K region, wherein K is the positive integer (step 1323) being less than N.In other words, in N × N number of region, by the right side to left and from the bottom to top, being changed to from large to small of frequency.
In sum, according to detection method and the contactor control device of manipulation thing of the present invention, in order to be detected on the manipulation thing with fingerprint characteristic on the operation interface of contactor control device, the track shake avoiding external environment to cause can be used.Moreover, according to detection method and the contactor control device of manipulation thing of the present invention, the output of the displacement (that is, the trace information detected) of the movement corresponding to the manipulation thing with fingerprint characteristic whether can be controlled according to the existence with the manipulation thing of fingerprint characteristic on operation interface.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (20)
1. manipulate a detection method for thing, be applicable to a contactor control device, to be detected on the manipulation thing with a fingerprint characteristic on an operation interface of this contactor control device, it is characterized in that, the detection method of this manipulation thing comprises:
Capture the image on this operation interface with an image sensor of this contactor control device, this image wherein captured is in a spatial domain;
A frequency transform function is utilized to be the signal represented with frequency field by this video conversion captured with a processor of this contactor control device; And
Analyze the signal being positioned at high frequency signal region in this signal represented with this frequency field, one first signal and a secondary signal is produced with the distribution scenario selectivity according to this signal represented with this frequency field, wherein the representative of this first signal is positioned at this manipulation thing this operation interface existing and has this fingerprint characteristic, and this secondary signal represents this manipulation thing not existing on this operation interface and have this fingerprint characteristic.
2. the detection method of manipulation thing according to claim 1, is characterized in that, this analytical procedure comprises:
Calculate the signal energy being positioned at high frequency signal region in this signal represented with this frequency field;
This signal energy relatively calculated and a threshold value; And
When this signal energy is greater than this threshold value, produce this first signal.
3. the detection method of manipulation thing according to claim 2, is characterized in that, this calculation procedure comprises:
Be N × N number of region by this signal halves represented with this frequency field, wherein N be greater than 1 integer; And
Calculate this signal energy in the region in this N × N number of region beyond upper left corner K × K region, wherein K is the positive integer being less than N.
4. the detection method of manipulation thing according to claim 1, is characterized in that, this analytical procedure comprises:
Calculate the quantity being positioned at the signal in high frequency signal region in this signal represented with this frequency field;
This quantity relatively calculated and a threshold value;
When this quantity is greater than this threshold value, produce this first signal; And
When this quantity is not more than this threshold value, produce this secondary signal.
5. the detection method of manipulation thing according to claim 1, is characterized in that, this frequency transform function is one of in DFT function, DCT function and DWT function.
6. the detection method of manipulation thing according to claim 1, is characterized in that, also comprise:
When be positioned on this operation interface exist there is this manipulation thing of this fingerprint characteristic time, respond this first signal and utilize this image captured to calculate the displacement of this manipulation thing.
7. the detection method of manipulation thing according to claim 1, is characterized in that, also comprise:
When be positioned at this operation interface exists there is this manipulation thing of this fingerprint characteristic time, utilize this first signal to cause a displacement transducer of this contactor control device to export corresponding to the displacement of the motion track of this manipulation thing.
8. a contactor control device, is characterized in that, comprising:
One operation interface;
One image sensor, to arranging by operation interface, to capture the image on this operation interface, this image wherein captured is in a spatial domain;
One processing unit, connect this image sensor, being that the frequency content of this image that the signal that represents with a frequency field and analysis capture judges whether this operation interface has a manipulation thing with a fingerprint characteristic by changing this image of capturing; And
One track detection device, connects this processing unit, to be detected on the motion track of this manipulation thing this operation interface with this fingerprint characteristic.
9. contactor control device according to claim 8, it is characterized in that, this processing unit utilizes a frequency transform function to be this signal represented with this frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the signal energy being positioned at a high frequency signal region in this signal represented with this frequency field.
10. contactor control device according to claim 9, it is characterized in that, this processing unit will be positioned at this signal energy in this high frequency signal region compared with a threshold value, and when this signal energy is greater than this threshold value, be identified in this manipulation thing this operation interface existing there is this fingerprint characteristic.
11. contactor control devices according to claim 8, it is characterized in that, this processing unit utilizes a frequency transform function to be this signal represented with this frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the quantity of the signal being positioned at a high frequency signal region in this signal represented with this frequency field.
12. contactor control devices according to claim 11, it is characterized in that, this processing unit will be positioned at this quantity of this signal in this high frequency signal region compared with a threshold value, and when this quantity is greater than this threshold value, be identified in this manipulation thing this operation interface existing there is this fingerprint characteristic.
13. contactor control devices according to claim 8, is characterized in that, when on this operation interface, existence has this manipulation thing of this fingerprint characteristic, this processing unit activates this track detection device, to detect the motion track of this manipulation thing.
14. contactor control devices according to claim 8, is characterized in that, this track detection device is a displacement transducer.
15. contactor control devices according to claim 8, is characterized in that, this track detection device is an image sensor.
16. 1 kinds of contactor control devices, is characterized in that, comprising:
One operation interface;
One image sensor, to arranging by operation interface, to capture the image on this operation interface, this image wherein captured is in a spatial domain; And
One processing unit, connect this image sensor, being that the frequency content of this image that the signal that represents with a frequency field and analysis capture judges whether this operation interface has a manipulation thing with a fingerprint characteristic by changing this image of capturing, and when existence has this manipulation thing of this fingerprint characteristic on this operation interface, utilize this image captured to calculate the displacement of this manipulation thing.
17. contactor control devices according to claim 16, it is characterized in that, this processing unit utilizes a frequency transform function to be this signal represented with this frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the signal energy being positioned at high frequency signal region in this signal represented with this frequency field.
18. contactor control devices according to claim 17, it is characterized in that, this processing unit will be positioned at this signal energy in this high frequency signal region compared with a threshold value, and when this signal energy is greater than this threshold value, be identified in this manipulation thing this operation interface existing there is this fingerprint characteristic.
19. contactor control devices according to claim 16, it is characterized in that, this processing unit utilizes a frequency transform function to be this signal represented with this frequency field by this video conversion captured, and judges whether this operation interface has this manipulation thing with this fingerprint characteristic according to the quantity of this signal being positioned at a high frequency signal region in this signal represented with this frequency field.
20. contactor control devices according to claim 19, it is characterized in that, this processing unit will be positioned at this quantity of this signal in this high frequency signal region compared with a threshold value, and when this quantity is greater than this threshold value, be identified in this manipulation thing this operation interface existing there is this fingerprint characteristic.
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| CN101339478A (en) * | 2007-07-02 | 2009-01-07 | 泰科电子有限公司 | Method and system for detecting touch events based on magnitude ratios |
| CN201383133Y (en) * | 2008-12-09 | 2010-01-13 | 上海纽发利商贸有限公司 | Photo-induction touch panel device |
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| US6064354A (en) * | 1998-07-01 | 2000-05-16 | Deluca; Michael Joseph | Stereoscopic user interface method and apparatus |
| US8614676B2 (en) * | 2007-04-24 | 2013-12-24 | Kuo-Ching Chiang | User motion detection mouse for electronic device |
| US20060241864A1 (en) * | 2005-04-22 | 2006-10-26 | Outland Research, Llc | Method and apparatus for point-and-send data transfer within an ubiquitous computing environment |
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| CN101339478A (en) * | 2007-07-02 | 2009-01-07 | 泰科电子有限公司 | Method and system for detecting touch events based on magnitude ratios |
| CN201383133Y (en) * | 2008-12-09 | 2010-01-13 | 上海纽发利商贸有限公司 | Photo-induction touch panel device |
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