CN102736753A - Photoelectric touch pen system - Google Patents
Photoelectric touch pen system Download PDFInfo
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- CN102736753A CN102736753A CN2012101981570A CN201210198157A CN102736753A CN 102736753 A CN102736753 A CN 102736753A CN 2012101981570 A CN2012101981570 A CN 2012101981570A CN 201210198157 A CN201210198157 A CN 201210198157A CN 102736753 A CN102736753 A CN 102736753A
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Abstract
The invention discloses a photoelectric touch pen system, which comprises a touch pen and electronic equipment with a touch panel. The touch pen comprises a pen point, a pen shell, a voltage conversion circuit and a photoelectric sensor, wherein the voltage conversion circuit is arranged in the pen shell, and is connected with a first node of the pen point; and the photoelectric sensor is arranged in the pen shell, and is connected with the voltage conversion circuit. The electronic equipment comprises a sensing circuit and a photoelectric device, wherein the sensing circuit senses capacitive coupling between an external touch object and an electrode of the touch panel; and the photoelectric device is used for transmitting a photoelectric signal to the sensing circuit. The touch pen and the electronic equipment can perform signal transmission. In such a way, the photoelectric touch pen system is simple in structure; an optical signal and the electronic equipment with the touch panel are used for realizing wireless communication remote control; moreover, optical signals at any angle can be easily received; and the system is high in sensing sensitivity.
Description
Technical field
The present invention relates to a kind of pointer system, particularly relate to a kind of photoelectricity pointer system.
Background technology
Along with after touch control screen is applied to various electronic products, the pointer of corresponding electronic product is also arisen at the historic moment.Pointer is an example with the pointer that is applied to capacitance touch control screen wherein as a kind of common electronic installation operation tool, and it is a stature matter with metal material mostly, and nib is main with soft conductive material, simulating human finger touch induction whereby.Existing pointer generally all is arranged in the electronic installation, when using pointer, only needs pointer is extracted in above-mentioned housing, so just can control touch-screen easily.Yet, owing to have signal to be connected between pointer and the electronic equipment, thus often have a connecting line to link to each other with electronic equipment at an end of pointer, and the length restriction of connecting line pointer indiscriminately ad. as one wishes use, thereby bring inconvenience to the operator.For avoiding the problems referred to above, occurred some wireless pointer on the market, yet existing wireless touch control pen structure is comparatively complicated, and induction sensitivity is not high yet.
Generally speaking, the diameter of pointer nib is very little, has only the diameter of 2mm usually, and in addition, the nib material generally all is hard, and what himself condition and capacitance plate required contradicts than large contact surface is long-pending.The small capacitance variable quantity that pointer produces (signal that pen produces) often makes that the touch-control circuit in the electronic equipment is difficult to the noise signal of itself and calculating system itself is distinguished, thereby signal to noise ratio (S/N ratio) is on the low side.In addition, the signal that how pointer is produced also is a good problem to study separately with pointing the signaling zone that produces.The small-signal that produces when at first, the small-signal that produces of pointer and finger are far away apart from touch-screen or touch pad can produce to be obscured; Secondly, when the hand of holding pointer touches touch-screen or touch pad, also can produce the induction amount, become more difficult with regard to the signal that makes detecting and tracking pointer produce like this.
Therefore need a kind of pointer system badly and overcome above-mentioned defective.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of photoelectricity pointer system, and is simple in structure, realizes the wireless telecommunications remote control through light signal and the electronic equipment with touch pad.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of photoelectricity pointer system is provided; Comprise that a pointer and has the electronic equipment of contact panel, said pointer comprises nib, a shell and is arranged on the voltage conversion circuit that links to each other with first node of said nib in the shell, the photoelectric sensor that links to each other with said voltage conversion circuit; Said electronic equipment comprises circuit for detecting, electrooptical device; Said circuit for detecting is measured the capacitive coupling between the electrode of extraneous touch objects and said contact panel; Said electrooptical device is used for and said circuit for detecting transmission photosignal, can carry out the signal transmission between said pointer and the said electronic equipment.
The invention has the beneficial effects as follows: the present invention is simple in structure, realizes the wireless telecommunications remote control through light signal and the electronic equipment with touch panel, and receives the light signal of all angles more easily, and detecting sensitivity is higher.
Description of drawings
Fig. 1 is the perspective view of pointer of the present invention system one preferred embodiment;
Fig. 2 be shown in the planar structure synoptic diagram of pointer;
Fig. 3 is the calculation of measured data scatter diagram of pointer under finger and the influence of forward potential change amount;
Fig. 4 is the calculation of measured data scatter diagram of pointer under finger and the influence of reverse potential variable quantity;
Fig. 5 A is the data scatter diagram of each channel after a kind of differentiate;
Fig. 5 B is the data scatter diagram of each channel after the another kind of differentiate;
Fig. 6 is first preferred embodiment of the circulation way of light around display screen and hyaline layer;
Fig. 7 is second preferred embodiment of the circulation way of light around display screen and hyaline layer;
Fig. 8 is the 3rd preferred embodiment of the circulation way of light around display screen and hyaline layer;
The mark of each parts is following in the accompanying drawing: 1, pointer, 10, nib, 11, a shell, 12, photoelectric sensor; 13, printing opacity polygon crystal, 14, reflecting piece, 15, voltage conversion circuit, 2, electronic installation; 20, touch panel, 201, hyaline layer, 202, display screen; 204, electrode, 21, circuit for detecting, 22, electrooptical device.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1, the embodiment of the invention comprises:
A kind of photoelectricity pointer system, comprising: a pointer and has the electronic equipment of contact panel, and said pointer comprises nib, a shell and is arranged on voltage conversion circuit, the photoelectric sensor in the shell; Said electronic equipment comprises circuit for detecting, electrooptical device; Said circuit for detecting is measured the capacitive coupling between the electrode of extraneous touch objects and said contact panel; Said electrooptical device is used for and said circuit for detecting synchronous transmission photosignal, can carry out the signal transmission between said pointer and the said electronic equipment.
At first, specifically introduce the structure of pointer, see also shown in Figure 2.Said pointer comprise nib, a shell and be arranged on the voltage conversion circuit that links to each other with first node of said nib in the shell, with the photoelectric sensor that said voltage conversion circuit links to each other, said nib is protruding to be exposed to outside said the shell.
The part of a said pointer shell is processed by the material that can see through the light that is used for the signal transmission; Wherein, Process by seeing through the material that is used for the signal transmission near the shell in the said written 5cm scope, said material has scattering function, in this part shell said photoelectric sensor is housed; Said photoelectric sensor is used for receiving or sending light signal or electric signal; This design can make pointer receive the light signal from said electronic equipment surface equably on the one hand, when holding pointer, can avoid the shielding of hand to the pointer receiving optical signals on the other hand.The part of a said pointer shell is processed by the material of different refractivity; As shown in Figure 2, in this embodiment, a printing opacity polygon crystal is equipped with in this part shell inside; A perhaps said printing opacity polygon crystal part shell therewith is structure as a whole, and its material by different refractivity is processed; Inside surface at said shell is provided with several reflecting piece; To said shell inside, in this embodiment, said reflecting piece is a strip to said reflecting piece with light emission; Be matrix type and be arranged in a shell inside surface near said nib place; According to the thickness degree of said pointer and the placement angle of said photoelectric sensor, the arrangement scope and the mode of said reflecting piece can be set as required, through the reflection of said reflecting piece; Make to get into the inner radiation direction change of said pointer, thereby light is responded to by said photoelectric sensor more easily.In the light of different incidence angles is injected a shell; Through the refraction action of said printing opacity polygon crystal and the reflex of said reflecting piece; The light of different angles finally aggregates into unidirectional some bundle light and is responded to by said photoelectric sensor; Enlarged the angle that said pointer receives light thus, made itself and the also obviously raising of induction sensitivity of said electronic equipment.
The nib of said pointer is done globulate, can when the contact panel of the said electronic equipment of contact, guarantee the good contact of all angles like this, that is to say to guarantee a lasting capacitive coupling, and is irrelevant with the angle that said pointer and said electronic equipment form.Because the contact area of the contact panel of said nib and said electronic equipment is very little; Can only produce a small electric capacity; Said voltage conversion circuit produces an electromotive force that increases in time or reduce to nib; As long as suitably control the size and Orientation of potential change amount, can so that the electric capacity of said pointer seem more greatly, littler, even the effect of a negative value appears.
Secondly, said pointer must cooperate an electronic equipment with contact panel, and following mask body place of matchmakers states electronic equipment.
Said electronic equipment comprises that computer, panel computer, phone, plotting sheet etc. have screen or do not have all can of screen.On the contact panel of said electronic equipment; Many electrode groups or electrod-array are all arranged usually; Have certain electric capacity between electrode, also have electric capacity between said electrode and the extraneous touch objects (like pointer, finger), in case finger or pointer close enough are to said contact panel; On near the electrode of extra electric capacity will being introduced in, said circuit for detecting is promptly measured the capacitive coupling between the electrode of extraneous touch objects and said contact panel.Specifically; Scanning process for electrode capacitance is the process of an iteration; Electrodes all in said electrode group or electrod-array are successively by after scanned, and scanning process can be restarted by first electrode from sequence, and scanning many times so successively; So the calculation of measured data of a lot of groups will occur, said calculation of measured data can be by said circuit for detecting collection and treatment.Said voltage conversion circuit can generate potential change amount (increase or reduce), and as its output, said potential change amount can drive said nib.The amplitude of said potential change amount and direction can be controlled.According on the same group said calculation of measured data not, said nib can be driven by the potential change amount of various amplitude or different directions.
After collection was over described many group calculation of measured data, said circuit for detecting can remove to distinguish the signal of finger signal and pen, and the process of this differentiation is controlled by a mathematical function.In conjunction with referring to accompanying drawing 3 and accompanying drawing 4, represented two groups of different data respectively, they have all comprised the said calculation of measured data of each channel, and said these data all are the point that disperses in the drawings.In the accompanying drawing 3 with accompanying drawing 4 in data do differentiate respectively and handle; Can obtain two scatter diagrams as describing among accompanying drawing 5A (being called group A) and the 5B (being called group B); The ordinate of former data among two figure all is the same, because their reactions is the influence that finger produces.For said nib, but driven by two identical potential change amounts in the opposite direction of absolute value, so the size of data of the said pointer influence of reaction is equal basically in two groups, direction but is opposite.Said mathematical function can keep the data of representative finger influence and eliminate the data of the said pointer influence of representative through the computing of a group A+ group B, the data ordinate of this interval scale finger influence becomes about original twice.Same, in order to keep the data of the said pointer influence of representative, said mathematical function can be organized the computing of A-group B.Further; If in two groups; The data of reacting the influence of said pointer are not identical absolute value, said mathematical function even can organize A+n0* group B or organize the computing of A-n1* group B, the purpose of parameter n0 and n1 be exactly eliminate as much as possible finger or influence; Its size depends on the ratio of the ordinate of data in two groups, also just depends on the amplitude of said potential change amount after all.
Said electrooptical device is used for and said circuit for detecting synchronous transmission photosignal, and the structure of said electrooptical device and said circuit for detecting can be diversified with relation.Usually, said circuit for detecting is a masters, and electrooptical device is driven side, and promptly said circuit for detecting produces electric signal and sends to said electrooptical device, is launched with the form of light signal by said electrooptical device; But the relation that other form is also arranged; Such as said circuit for detecting and said electrooptical device can all be the driven side of third party's control circuit or integrated circuit, and these two circuit cooperatings also receive the control of said third party's control circuit or integrated circuit.In theory, said electrooptical device also can be done masters in both sides relation, and said circuit for detecting is driven side, promptly said electrooptical device receiving optical signals, and electric signal sent to said circuit for detecting.For both relations, a variety of possibilities is arranged, all should be included in protection scope of the present invention.In a preferred embodiment of the invention, said circuit for detecting is a masters, and said electrooptical device is driven side.Although the mode of both sides relation can be different, the both can follow a common principle, and specifically, this principle is necessary driven side and masters synchronous exactly.In the present invention, described synchronized relation has various ways, for example; Said masters can be said pointer or said electronic equipment, and masters emits beam, and driven side receives light; In a preferred embodiment of the invention, said pointer is the driven side who receives light.
It is how propagating optical signal or electric signal that following mask body is discussed said pointer system.The wavelength of said light signal is in outside the human eye visible range basically, and for example infrared ray, bluetooth, WiFi etc. propagate between said photoelectric sensor and said electrooptical device.Said electrooptical device is carried in the light signal between pointer and the electronic equipment on the pulse signal; Represent corresponding light signal with the different level or the pulse in distinct pulse widths or cycle; And the stable state time of the said light signal of peak pulse duration of said pulse signal is short; Promptly in a stable state of light signal in the time, can be exactly the transformation of light signal state be reflected on the pulse signal.Illustrate, ultrared emission and ultrared two states promptly representing light signal of not launching, this two states can be reflected on high level or the low level.So, how the light signal that said pointer receives is propagated in electronic equipment, sees also Fig. 6-Fig. 8.Said contact panel comprises a display screen and is located at the hyaline layer on the said display screen that light has multiple circulation way around said display screen and hyaline layer.In embodiment one, said electronic equipment comprises a photoelectric device (not indicating among the figure) at least, and as shown in Figure 6, said photoelectric device can make in the gap of light between said display screen and said hyaline layer, is parallel to said display screen and propagates; In embodiment two; Said electronic equipment comprises a light emitting devices (not indicating among the figure) at least, and said light emitting devices can pass said hyaline layer throw light, and is as shown in Figure 7; Light passes said hyaline layer; Propagate along said display screen edge, light also can pass said hyaline layer and outwards propagate from said display screen emission simultaneously; In embodiment three, as shown in Figure 8, it is inner that the light emission mainly concentrates on said hyaline layer; In embodiment four, in the white backlight of said display screen, be added with the light of signal vehicle, said light is shown the scattering material institute scattering of screen; Through above-mentioned several kinds of modes; Make light be covered with total system, can cover signal in large area, thereby more easily by said pointer induced signal.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (17)
1. photoelectricity pointer system; Comprise that a pointer and has the electronic equipment of contact panel; It is characterized in that said pointer comprises nib, a shell and is arranged on the voltage conversion circuit that links to each other with first node of said nib in the shell, the photoelectric sensor that links to each other with said voltage conversion circuit; Said electronic equipment comprises circuit for detecting, electrooptical device; Said circuit for detecting is detected the capacitive coupling between the electrode of extraneous touch objects and said contact panel; Said electrooptical device is used for and said circuit for detecting transmission photosignal, can carry out the signal transmission between said pointer and the said electronic equipment.
2. photoelectricity pointer according to claim 1 system is characterized in that, the part of a said pointer shell processed by the material that can see through the light that is used for the signal transmission.
3. photoelectricity pointer according to claim 2 system is characterized in that, processed by the material that can see through the light that is used for the signal transmission near a shell at said nib place, and said material has scattering function.
4. photoelectricity pointer according to claim 2 system is characterized in that the part of a shell of said pointer is processed by the material of different refractivity, and its refractive index is different from air refraction.
5. photoelectricity pointer according to claim 2 system is characterized in that, is provided with several reflecting piece at the inside surface of said shell, said reflecting piece with the light reflection to said shell inside.
6. photoelectricity pointer according to claim 1 system is characterized in that, the wavelength of the light wave of said photoelectric sensor and the transmission of said electrooptical device is in outside the human eye visible range basically.
7. photoelectricity pointer according to claim 1 system is characterized in that said electrooptical device is carried in the light signal between pointer and the electronic equipment on the pulse signal.
8. photoelectricity pointer according to claim 7 system is characterized in that, the stable state time of the said light signal of peak pulse duration of said pulse signal is short.
9. photoelectricity pointer according to claim 1 system is characterized in that, said contact panel comprises a display screen and be located at the hyaline layer on the said display screen that light has multiple circulation way around said display screen and hyaline layer.
10. photoelectricity pointer according to claim 9 system is characterized in that said electronic equipment comprises a photoelectric device at least, and said photoelectric device can make in the gap of light between said display screen and said hyaline layer, is parallel to said display screen and propagates.
11. photoelectricity pointer according to claim 9 system is characterized in that said electronic equipment comprises a light emitting devices at least, said light emitting devices can pass said hyaline layer throw light.
12. photoelectricity pointer according to claim 9 system is characterized in that, it is inner that the light emission mainly concentrates on said hyaline layer.
13. photoelectricity pointer according to claim 9 system is characterized in that in the white backlight of said display screen, be added with the light of signal vehicle, said light is shown the scattering material institute scattering of screen.
14. photoelectricity pointer according to claim 1 system is characterized in that, said voltage conversion circuit produces an electromotive force that increases in time or reduce to said nib.
15. photoelectricity pointer according to claim 1 system; It is characterized in that; Said circuit for detecting can obtain the measurement result of several fingers or said pointer; For each measurement result, the nib of said pointer drive by the potential change amount of various amplitude or direction (increase or reduce).
16. photoelectricity pointer according to claim 15 system is characterized in that, exists a kind of mathematical function that the finger influence is cancelled and the influence of said pointer is retained, and calculates the data that make new advances.
17. photoelectricity pointer according to claim 15 system is characterized in that, exists a kind of mathematical function that said pointer influence is cancelled and points influence and be retained, and calculate new data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210198157.0A CN102736753B (en) | 2012-06-15 | 2012-06-15 | Photoelectric touch pen system |
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| CN201210198157.0A CN102736753B (en) | 2012-06-15 | 2012-06-15 | Photoelectric touch pen system |
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| CN102736753A true CN102736753A (en) | 2012-10-17 |
| CN102736753B CN102736753B (en) | 2016-12-21 |
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| CN102968196A (en) * | 2012-11-29 | 2013-03-13 | 苏州瀚瑞微电子有限公司 | Wireless signal transmission method for capacitance pen system |
| WO2015055024A1 (en) * | 2013-10-14 | 2015-04-23 | 深圳市汇顶科技股份有限公司 | Touch terminal, active stylus detection method, and system |
| TWI511006B (en) * | 2014-02-07 | 2015-12-01 | Wistron Corp | Optical imaging system and imaging processing method for optical imaging system |
| CN105302379A (en) * | 2014-05-26 | 2016-02-03 | 纬创资通股份有限公司 | Touch detection method and optical touch system thereof |
| CN105739723A (en) * | 2014-12-26 | 2016-07-06 | 株式会社和冠 | Position Pointer And Signal Processor |
| CN106406636A (en) * | 2016-06-30 | 2017-02-15 | 广州视睿电子科技有限公司 | Touch input device, touch screen, touch application method and system thereof |
| TWI582654B (en) * | 2015-06-17 | 2017-05-11 | 宏碁股份有限公司 | Electronic device and touch report method thereof |
| CN109416609A (en) * | 2016-10-27 | 2019-03-01 | 瑟克公司 | With the finger trail in the input unit close to sensing |
| CN112631439A (en) * | 2020-12-10 | 2021-04-09 | 安徽鸿程光电有限公司 | Touch control pen |
| CN113050811A (en) * | 2021-03-30 | 2021-06-29 | 联想(北京)有限公司 | Electronic equipment and input equipment |
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| CN109416609A (en) * | 2016-10-27 | 2019-03-01 | 瑟克公司 | With the finger trail in the input unit close to sensing |
| CN112631439A (en) * | 2020-12-10 | 2021-04-09 | 安徽鸿程光电有限公司 | Touch control pen |
| CN113050811A (en) * | 2021-03-30 | 2021-06-29 | 联想(北京)有限公司 | Electronic equipment and input equipment |
| CN113050811B (en) * | 2021-03-30 | 2023-12-26 | 联想(北京)有限公司 | Electronic equipment and input equipment |
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| CN102736753B (en) | 2016-12-21 |
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