CN104182089A - Optical touch system and optical touch method - Google Patents
Optical touch system and optical touch method Download PDFInfo
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- CN104182089A CN104182089A CN201310221324.3A CN201310221324A CN104182089A CN 104182089 A CN104182089 A CN 104182089A CN 201310221324 A CN201310221324 A CN 201310221324A CN 104182089 A CN104182089 A CN 104182089A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000013459 approach Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 241001422033 Thestylus Species 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000003550 marker Substances 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
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Abstract
The invention provides an optical touch system and an optical touch method. The optical touch system includes: a first transmitter, the first transmitter transmitting a first optical signal; a sensor for sensing a second optical signal; a stylus, the stylus comprising: a receiver, the receiver receiving the first optical signal; a second transmitter for transmitting the second optical signal; and a processing unit, when the receiver receives the first optical signal, the second transmitter is started. The invention can achieve the effect of saving electricity.
Description
Technical field
The present invention is relevant for a kind of optical touch control system and optical touch control method, and is particularly to a kind of optical touch control system and optical touch control method that can reach power saving effect.
Background technology
At present, the active electronics white board marker that is used in optical touch control system can for example, receive optical sensing module by the light (, infrared ray) of transmitting specific wavelength.By this, optical sensing module can pick out electronic whiteboard pen existence, calculate position of touch, and judge the current state of electronic whiteboard pen (for example, the color of style of writing etc.).But under this framework, during whether electronic whiteboard pen cannot self-ly detect and be used, therefore the light that must continue the above-mentioned specific wavelength of transmitting can be by the correct identification of optical sensing module while guaranteeing to use, yet lasting emission of light causes the quick power consumption of electronic whiteboard pen.
In view of this, the present invention proposes a kind of optical touch control system and optical touch control method, can when not using electronic whiteboard, automatically stop the light that transmitting represents white board marker itself, reaches the effect of power saving.
Summary of the invention
One embodiment of the invention, proposes a kind of optical touch control system, and this optical touch control system comprises: one first transmitter, this first transmitter transmitting one first light signal; One sensor, this sensor sensing one second light signal; One pointer, this pointer comprises: a receiver, this receiver receives this first light signal; One second transmitter, in order to launch this second light signal; And a processing unit, when this receiver receives this first light signal, start this second transmitter.
In above-mentioned optical touch control system, this first transmitter is launched this first light signal along a touch surface, and while making this pointer approach this touch surface, this receiver just can receive this first light signal.
In above-mentioned optical touch control system, this first light signal that this first transmitter is launched has a specific flicker frequency, and this processing unit judges that according to this specific flicker frequency the received light of this receiver is this first light signal.
In above-mentioned optical touch control system, this pointer also comprises: a filter, be arranged at outside the receiving plane of this receiver, and only allow this receiver of light incident of the wavelength coverage of this first light signal.
In above-mentioned optical touch control system, this optical touch control system is that an electronic whiteboard device and this pointer are electronic whiteboard pens, this pointer is changeable in variety of pens touch formula, and this processing unit is controlled this second transmitter and launched this second light signal to multiple flicker frequency that should variety of pens touch formula.
Above-mentioned optical touch control system also comprises: a touch-control computing module, according to the flicker frequency of this second light signal, judges the style of writing pattern that this pointer is current; And a display panel, in the touch trajectory of this pointer, show the style of writing of corresponding current style of writing pattern.
In above-mentioned optical touch control system, when this pointer electric weight is too low, this control module is controlled this second light signal that this second transmitter is launched specific flicker frequency.
In above-mentioned optical touch control system, at least one in this first light signal and this second light signal is infrared signal.
Another embodiment of the present invention, proposes a kind of optical touch control method, and this optical touch control method comprises: along a touch surface, provide one first light signal; Use this touch surface of pointer touch-control, this pointer has a transmitter and a receiver; When this receiver receives this first light signal, make this transmitter transmitting one second light signal; And the position that judges this pointer according to this second light signal.
Above-mentioned optical touch control method also comprises: when this receiver does not receive this first light signal, stop this transmitter and make this pointer in power down mode.
According to above-mentioned optical touch control system and optical touch control method, when the receiver on electronic whiteboard pen receives the light signal that system sends, just start the transmitter of electronic whiteboard pen, launch the light that represents electronic whiteboard pen itself; During light signal that the system of not receiving is sent, stop the transmitter of electronic whiteboard pen, do not launch the light that represents electronic whiteboard pen itself, reach the effect of power saving.
Accompanying drawing explanation
Fig. 1 is the stereographic map of optical touch control system according to an embodiment of the invention.
Fig. 2 is the Organization Chart of the optical touch control system of Fig. 1.
Fig. 3 is the action flow chart of the optical touch control system of Fig. 2 pointer during for electronic whiteboard device.
Primary clustering symbol description:
1～pointer (electronic whiteboard pen); 13～processing unit;
2～optical sensing module; 14～infrared filter;
3～touch surface; 21～infrared transmitter;
4～display panel; 22～sensor;
5～touch-control computing module; IR1, IR2～infrared signal;
11～receiver; S301-S304～step.
12～infrared transmitter;
Embodiment
Fig. 1 is the stereographic map of optical touch control system according to an embodiment of the invention.Optical touch control system of the present invention comprises: pointer 1, optical sensing module 2, touch surface (for example, glass) 3 and display panel 4.
Pointer 1 is provided with receiver 11 and infrared transmitter 12 in the position near nib, and receiver 11 is in order to receive the infrared signal of optical sensing module 2 transmittings, and infrared transmitter 12 is in order to return another infrared signal to optical sensing module 2.Optical sensing module 2 continues transmitting infrared ray along touch surface 3, whether detect pointer 1 near touch surface 3, if pointer 1 can be received the infrared signal that optical sensing module 2 transmits and return another infrared signal to optical sensing module 2 near 3 of touch surface, the state and the position of touch that make optical sensing module 2 can judge that pointer 1 is current.When this optical touch control system is used for electronic whiteboard device, pointer 1 is equivalent to electronic whiteboard pen, can in touch surface 3, write or draw a picture, the styles of writing such as the color setting according to pointer 1 or line weight, display panel 4 can streak and on track, show corresponding color or line weight etc. in pointer 1.
Then, the framework of optical touch control system of the present invention will be illustrated in greater detail.Fig. 2 is the Organization Chart of the optical touch control system of Fig. 1.In Fig. 2, the assembly identical with Fig. 1 will indicate identical symbol.As shown in Figure 2, optical sensing module 2 has infrared transmitter 21 and sensor 22.Pointer 1 also has processing unit 13 except aforesaid receiver 11 and infrared transmitter 12.In this embodiment, an infrared filter 14 can be set in addition and cover receiver 11 and infrared transmitter 12.And optical touch control system also comprises touch-control computing module 5, be used for calculating position of touch.To the effect of each assembly be described according to the order of action below.
First, infrared transmitter 21 has the infrared signal IR1 of specific flicker frequency along touch surface 3 transmittings one.When pointer 1 approaches touch surface 3, receiver 11 can receive infrared signal IR1.Now, receiver 11 is converted to electric signal by infrared signal IR1 and exports processing unit 13 to.The frequency information that processing unit 13 comprises according to electric signal judges whether that the frequency of the infrared signal that sends with optical sensing module 2 is consistent.When determination frequency is consistent, processing unit 13 is controlled the infrared transmitter 12 transmitting infrared signal IR2 of pointer 1; Otherwise inconsistent when determination frequency, processing unit 13 is controlled infrared transmitter 12 and is stopped launching infrared signal IR2.
When this optical touch control system is used for electronic whiteboard device, pointer 1 is equivalent to electronic whiteboard pen, thus can provide user to switch on different style of writing states, for example, different colors, line weight, line style etc.Processing unit 13 can be controlled the infrared signal IR2 of the different flicker frequencies of infrared transmitter 12 transmitting of pointer 1 according to different states, makes each flicker frequency correspond to a state of pointer.What is more, also can allow the infrared signal IR2 of a certain flicker frequency correspond to the too low state of electric weight of pointer 1, make the too low state of electric weight can report to optical touch control system.
The sensor 22 of optical sensing module 2 receives after infrared signal IR2, light signal is converted to electric signal and exports touch-control computing module 5 to.Touch-control computing module 5 calculates position of touch according to infrared signal IR2 to the incident direction of two optical sensing modules 2, judges the state of pointer according to the flicker frequency of infrared signal IR2.When this optical touch control system is when the electronic whiteboard device, the styles of writing such as the color that display panel 4 can set according to pointer 1 or line weight, streak and on track, show corresponding color or line weight in pointer 1.
According to above-mentioned optical touch control system, pointer 1 only just can be launched infrared signal IR2 when using near touch surface 3, does not launch infrared signal IR2 when pointer 1 is not used, and can reach by this effect of power saving.And at receiver 11 and the outer infrared filter 14 that arranges of infrared transmitter 12, can isolate the light (for example, the light of sunshine, halogen bulb) of non-Infrared wavelength, therefore can lower the operand of processing unit 13.
The motion flow of this optical touch control system finally, is described.Fig. 3 is the action flow chart of the optical touch control system of Fig. 2 pointer during for electronic whiteboard device.At step S301, electronic whiteboard pen (pointer 1) standby, maintains power down mode.
Then enter step S302, judge whether receiver 11 receives infrared signal, if all receive, infrared signal advances to step S303, otherwise gets back to the power down mode of step S301.
At step S303, processing unit 13 judges the infrared signal that receiver 11 receives, and whether frequency is consistent with infrared signal IR1, if frequency is consistent, confirms that the infrared transmitter 21 that infrared signal is optical sensing module 2 is launched, the step of advancing S304; If frequency is inconsistent, get back to the power down mode of step S301.
At step S304, processing unit 13 according to electronic whiteboard pen current state (comprising stroke color, thickness, pattern, electric weight deficiency etc.) control infrared transmitter 12 transmittings to the infrared signal IR2 of specific flicker frequency that should state to optical sensing module 2.After step S304, through the time delay of a setting, electronic whiteboard pen will be got back to step S302, whether rejudges electronic whiteboard pen by use.
According to above-mentioned optical touch control system and motion flow, can, when electronic whiteboard pen is not used, automatically stop launching infrared signal, and then reach the effect of power saving.In addition, though the present invention uses infrared signal as the light signal of linking up between pointer and optical sensing module, the light signal of other wavelength also can be applicable in framework of the present invention, and the present invention is not limited with infrared signal.
Though the present invention illustrates with above-described embodiment, is not limited to this.Furthermore, those skilled in the art, do not depart under concept of the present invention and equal category, the scope of claims must explain to comprise the embodiment of the present invention and other distortion widely.For example, the calculating that the infrared transmitter of optical sensing module and sensor can be separately positioned on diverse location, position of touch is also not limited to according to the infrared signal of passback, judge in embodiment, can irradiate touch control object by other light sources, then judge according to the shade in sensor.
Claims (10)
1. an optical touch control system, this optical touch control system comprises:
One first transmitter, this first transmitter transmitting one first light signal;
One sensor, this sensor sensing one second light signal;
One pointer, this pointer comprises:
One receiver, this receiver receives this first light signal;
One second transmitter, in order to launch this second light signal; And
One processing unit, when this receiver receives this first light signal, starts this second transmitter.
2. optical touch control system as claimed in claim 1, wherein this first transmitter is launched this first light signal along a touch surface, and while making this pointer approach this touch surface, this receiver just can receive this first light signal.
3. optical touch control system as claimed in claim 1, this first light signal that wherein this first transmitter is launched has a specific flicker frequency, and this processing unit judges that according to this specific flicker frequency the received light of this receiver is this first light signal.
4. optical touch control system as claimed in claim 1, wherein this pointer also comprises:
One filter, this filter is arranged at outside the receiving plane of this receiver, only allows this receiver of light incident of the wavelength coverage of this first light signal.
5. optical touch control system as claimed in claim 1, wherein this optical touch control system is that an electronic whiteboard device and this pointer are electronic whiteboard pens, this pointer is changeable in variety of pens touch formula, and this processing unit is controlled this second transmitter and launched this second light signal to multiple flicker frequency that should variety of pens touch formula.
6. optical touch control system as claimed in claim 5, this optical touch control system also comprises:
One touch-control computing module, this touch-control computing module, according to the flicker frequency of this second light signal, judges the style of writing pattern that this pointer is current; And
One display panel, this display panel shows the style of writing of corresponding current style of writing pattern in the touch trajectory of this pointer.
7. optical touch control system as claimed in claim 1, wherein, when this pointer electric weight is too low, this control module is controlled this second light signal that this second transmitter is launched specific flicker frequency.
8. optical touch control system as claimed in claim 7, wherein at least one in this first light signal and this second light signal is infrared signal.
9. an optical touch control method, this optical touch control method comprises:
Along a touch surface, provide one first light signal;
Use this touch surface of pointer touch-control, this pointer has a transmitter and a receiver;
When this receiver receives this first light signal, make this transmitter transmitting one second light signal; And
According to this second light signal, judge the position of this pointer.
10. optical touch control method as claimed in claim 9, this optical touch control method also comprises:
When this receiver does not receive this first light signal, stop this transmitter and make this pointer in power down mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102118186 | 2013-05-23 | ||
| TW102118186A TWI496036B (en) | 2013-05-23 | 2013-05-23 | Optical touch system and optical touch method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104182089A true CN104182089A (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310221324.3A Pending CN104182089A (en) | 2013-05-23 | 2013-06-05 | Optical touch system and optical touch method |
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|---|---|
| CN (1) | CN104182089A (en) |
| TW (1) | TWI496036B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106775003A (en) * | 2016-11-23 | 2017-05-31 | 广州视源电子科技股份有限公司 | Interactive device, color control method and device |
| CN106990859A (en) * | 2016-01-21 | 2017-07-28 | 纬创资通股份有限公司 | Optical touch system, optical touch device and touch detection method thereof |
| WO2019036826A1 (en) * | 2017-08-21 | 2019-02-28 | 华为技术有限公司 | Control method for electronic apparatus and input apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200846994A (en) * | 2007-05-16 | 2008-12-01 | Hannstar Display Corp | Light pointing device employed in input apparatus and driving method thereof |
| CN102023753A (en) * | 2009-09-09 | 2011-04-20 | 联想(北京)有限公司 | Approach detection apparatus and electronic equipment |
| WO2011129159A1 (en) * | 2010-04-16 | 2011-10-20 | シャープ株式会社 | Input display device, input device, and control method of input device |
| CN103092395A (en) * | 2011-11-04 | 2013-05-08 | 三星电子株式会社 | Method and system for recognizing touch point, and display apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000043484A (en) * | 1998-07-30 | 2000-02-15 | Ricoh Co Ltd | Electronic whiteboard system |
| TWI268441B (en) * | 2001-10-29 | 2006-12-11 | Beauty Up Co Ltd | Digital touch display system can be manufactured by off-the-shelf manufacturing tools and the size of panel can be enlarged according to actual demand |
| EP1493124B1 (en) * | 2002-03-13 | 2006-07-26 | O-Pen ApS | A touch pad and a method of operating the touch pad |
| TWI413923B (en) * | 2009-06-30 | 2013-11-01 | E Pin Optical Industry Co Ltd | Mems scanning coordinate detection method and touch panel thereof |
-
2013
- 2013-05-23 TW TW102118186A patent/TWI496036B/en active
- 2013-06-05 CN CN201310221324.3A patent/CN104182089A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200846994A (en) * | 2007-05-16 | 2008-12-01 | Hannstar Display Corp | Light pointing device employed in input apparatus and driving method thereof |
| CN102023753A (en) * | 2009-09-09 | 2011-04-20 | 联想(北京)有限公司 | Approach detection apparatus and electronic equipment |
| WO2011129159A1 (en) * | 2010-04-16 | 2011-10-20 | シャープ株式会社 | Input display device, input device, and control method of input device |
| CN103092395A (en) * | 2011-11-04 | 2013-05-08 | 三星电子株式会社 | Method and system for recognizing touch point, and display apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990859A (en) * | 2016-01-21 | 2017-07-28 | 纬创资通股份有限公司 | Optical touch system, optical touch device and touch detection method thereof |
| CN106775003A (en) * | 2016-11-23 | 2017-05-31 | 广州视源电子科技股份有限公司 | Interactive device, color control method and device |
| WO2019036826A1 (en) * | 2017-08-21 | 2019-02-28 | 华为技术有限公司 | Control method for electronic apparatus and input apparatus |
| CN109844702A (en) * | 2017-08-21 | 2019-06-04 | 华为技术有限公司 | The control method and input equipment of a kind of pair of electronic equipment |
| CN109844702B (en) * | 2017-08-21 | 2020-10-27 | 华为技术有限公司 | Control method for electronic equipment and input equipment |
| US11550421B2 (en) | 2017-08-21 | 2023-01-10 | Huawei Technologies Co., Ltd. | Electronic device control method and input device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI496036B (en) | 2015-08-11 |
| TW201445373A (en) | 2014-12-01 |
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Application publication date: 20141203 |
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