CN1434367A - Multi-point information collection system for hand (and assigned object) - Google Patents
Multi-point information collection system for hand (and assigned object) Download PDFInfo
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- CN1434367A CN1434367A CN 03119169 CN03119169A CN1434367A CN 1434367 A CN1434367 A CN 1434367A CN 03119169 CN03119169 CN 03119169 CN 03119169 A CN03119169 A CN 03119169A CN 1434367 A CN1434367 A CN 1434367A
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- contact
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- hand
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Abstract
The invention discloses a multipoint contact information collecting system of hand (and assigned object), composed of image inuction unit and image information processing module. It collects and processes the image to get space physical coordinates, contact-state information and their changed information of the hand (and assigned object), so as to get multipoint contact states: contact degree, time and mode. It can be applied to computer input system and other equiopments.
Description
The present invention is the multiple spot contact information acquisition system of a kind of hand (and assigned object) and sensitive surface.
The present invention can be used as the equipment based on the computerized information input system of the spatial shape characteristic information of hand (and assigned object).
The present invention also is a kind of novel computer input, is a kind ofly can realize the traditional computer peripheral hardware, such as: the computer input of the partial function of equipment such as keyboard, mouse, touch pad, clipboard and touch-screen.
Input system of the present invention also is applicable to the relevant device of other occasions and installs as information input system.
Touch apparatus commonly used at present has touch pad, handwriting pad and touch-screen etc., and these equipment are all good for the effect of conventional occasion.But a common feature of this kind equipment in the market all designs at single-point (single-point contact), at the also not appearance of equipment of multiple spot contact, rare relevant patent documentation.
The ultimate principle of common single-point touches equipment has the type based on following several realization approach.
1. surface acoustic wave
Surface acoustic wave, hyperacoustic a kind of, at the mechanical energy ripple of the surperficial shallow-layer propagation of medium (for example rigid material such as glass or metal).By wedge shape tribrach (according to the strict design of the wavelength of surface wave), can accomplish orientation, the emission of low-angle surface acoustic wave energy.
The touch screen portion of surface acoustic wave touch apparatus can be the glass plate of plane, sphere or a cylinder, is installed in the front of CRT, LED, LCD or plasma display screen.This piece glass plate is a pure tempered glass, and without any pad pasting and overlayer, this point is different from other class touch screen technology.
Each has fixed the upper left corner of glass screen and the lower right corner vertically and the ultrasound transmitting transducer of horizontal direction, and two corresponding ultrasound wave receiving transducers have then been fixed in the upper right corner.Four peripheries of glass screen then are carved with 45 by dredging the very accurate reflection strip of close spacing.
Transmitting transducer is sent controller here by the touch-screen cable electric signal is converted into acoustic wave energy and transmits to the left surface, one group of accurate reflection strip by glass plate bottom is reflected into even face transmission upwards to acoustic wave energy then, acoustic wave energy is through the screen surface, reflection strip by the top gathers to become line to the right to propagate to receiving transducer again, and receiving transducer becomes electric signal with the surface acoustic wave energy that returns.
Transmit with the received signal waveform when not touching, the waveform of received signal is with just the same with reference to waveform.When finger or other can absorb or stop the object touch screen of acoustic wave energy the time, the acoustic wave energy that makes progress away by way of finger position is partially absorbed, and is reflected at that to receive on the waveform be that waveform has a decay breach on a certain moment position.Receive the corresponding finger of the waveform breach that blocked position signal attenuation, calculate that gap position gets promptly that the touch coordinate controller analyzes the decay of received signal and by the location determination coordinate of breach.The X that can both respond except general touch apparatus, the Y coordinate, the surface acoustic wave touch apparatus also responds the 3rd Z axial coordinate, just can perception user touch pressure sizes values.Its principle is that the damping capacity by the receiving signal attenuation place calculates.
2. resistive technologies
The screen body portion of resistive touch equipment is a multi-layer compound film that cooperates very much with display surface, by one deck glass or organic glass as basic unit, the surface scribbles the conductive layer of layer of transparent, be stamped one deck outside surface cure process, smooth scratch resistant plastic layer above again, its inside surface also scribbles the layer of transparent conductive layer, has the transparent isolating points of many tiny (less than mils) that they are separated insulation between two conductive layers.
When the finger touch screen, the two conductive layers of usual mutually insulated has just had a contact in the position, touch point, cause is the even voltage field of 5V of a conductive layer connection Y direction wherein, make the voltage of detecting layer become non-zero by zero, controller detects after this connects, and carries out the A/D conversion, and with the magnitude of voltage that obtains compare with 5V get final product the Y-axis coordinate of touch point, in like manner draw the coordinate of X-axis, the common ultimate principle of all resistive technologies touch-screens that Here it is.Briefly, the principle of work of resistive touch equipment adds operating voltage at one group of resistor network exactly, when writing pencil or finger have touched touch-screen, obtain the coordinate of both direction by the variation of measuring the screen impedance matrix, thereby obtain writing pencil or finger position.Its horizontal and vertical changes in resistance can be similar to the slide rheostat of regarding two groups of linearities as.
The key of resistance class touch apparatus is material science and technology.Transparent conducting coating material commonly used has: 1. ITO, indium oxide, workplace coating; 2. nickel gold plating.Be not suitable as the workplace of electric resistance touch screen, can only be as visiting layer.
Commonly used have four-wire resistance type, five wire resistance types.Basic unit is added in the voltage field of both direction on the conduction workplace of glass by the precision resistance network, outer nickel gold conductive layer is used for being used as pure conductor.After touching, the method that timesharing detects internal layer ITO contact point X-axis and Y-axis magnitude of voltage records touch point position.
3. capacitive sensing technology
The structure of capacitance touch equipment mainly is the thin-film body layer of plating layer of transparent on glass screen, adds the lastblock cover glass at conductor layer again, and conductor layer and inductor can be thoroughly protected in two glass designs.In addition, all plate long and narrow electrode, in electric conductor, form a low-voltage AC field on additional touch-screen four limits.During user's touch screen, because people's bulk electric field can form one " coupling capacitance " between finger and conductor layer, the electric current that four limit electrodes send can flow to the contact, and the power of electric current is accurately calculated touch point position.Its characteristics are higher for touching accuracy, and antijamming capability is stronger.But this type of touch apparatus is afraid of electrostatic interference.
The touch apparatus of principle types such as other also useful infrared techniques, electromagnetic technique.
Touch apparatus based on above these methods all designs at the single-point contact at present, can only discern the contact information of single contact point.
The publication information of relevant calculation machine input system:
Still the patent of invention of not having at present multiple spot contact touch apparatus is open.
The present invention has announced multiple spot contact information system, and it is different from the relevant touch apparatus of tradition, can carry out the collection and the processing of the multiple spot contact information of hand (and assigned object).
The computer input based on the information characteristics of the spatial shape of hand (and assigned object) of in addition two patent CN1378171A patents of invention that the present invention can be used for the inventor and CN1322982A patent of invention, the information that also can be used for other relevant devices is imported.
Design philosophy of the present invention:
The hand of the present invention by acquisition operations person and the image of the specified object (assigned object) of operator, and after image handled, the image information of details of (and assigned object) in one's hands and all fingers and assigned object, be converted into the physical coordinates of details of hand (reaching assigned object) and all fingers and assigned object and the contact condition information of surface in contact.
The change information of the image information that the present invention also causes by the action of gathering by the specified object (assigned object) of operator's hand and operator, and after this information handled, the change information of contact condition of the physical coordinates of CONSTRUCTED SPECIFICATION of all fingers of (and assigned object) in one's hands and assigned object and surface in contact.
The hand of the present invention by acquisition operations person and the information of the specified object (assigned object) of operator and the contact condition of a plurality of contact points of sensitive surface are discerned with the multiple spot of judging hand and assigned object and are contacted.
Collection and processing to image information can just can realize by existing maturation and disclosed technology.The multiple spot contact information acquisition system of hand of the present invention and assigned object also can be used for other devices as information input system.
Notions such as related " hand and the assigned object " of multiple spot contact information acquisition system of the present invention, " multiple spot contact " are described below:
Hand and assigned object: operator's hand comprises operator's whole hands and finger, and specified other objects---the assigned object of operator, also comprises all fingers of hand (and assigned object) and all CONSTRUCTED SPECIFICATION of assigned object.
Multiple spot contact: operator's hand and each finger, a plurality of CONSTRUCTED SPECIFICATION of assigned object and all contact conditions of sensitive surface more than one contact point.
Description of drawings:
Fig. 1: the image capturing system schematic diagram of hand (and assigned object)
1-hand (or assigned object);
The 2-image sensing apparatus;
The 3-image information processing module;
Fig. 2: the structure principle chart of image sensing apparatus
The 1-imageing sensor;
The 2-sensitive surface;
Fig. 3: the structure principle chart of the image sensing apparatus of imageing sensor side
The 1-imageing sensor;
The 2-sensitive surface;
The 3-reflective mirror;
Technical scheme of the present invention:
Fig. 1 shows the sky of selling and specifying thing, image sensing apparatus, image information processing module Between relativeness.
Among Fig. 1, the spatial movement of hand (1) and appointment thing is caught by image sensing apparatus (2) Obtain, hand (1) and appointment thing draw with the contacting of sensitive surface of image sensing apparatus (2) simultaneously The image change that rises also is captured to. Image information processing module (3) is to image sensing apparatus The image of (2) catching carries out graphical analysis and image to be processed, and gets final product in one's handsly (1) and specify The contact condition of the sensitive surface of thing and image sensing apparatus, and corresponding space physics is sat Mark.
Contact condition on hand (1) and appointment thing and image sensing apparatus (2) sensitive surface, Refer to hand (1) and specify thing and image sensing apparatus (2) sensitive surface on exposure level, Time of contact and the way of contact.
The indication exposure level is expression hand (1) and specifies thing (to comprise each finger and specify thing CONSTRUCTED SPECIFICATION) with the size that contacts contact of image sensing apparatus (2) sensitive surface, And with the size of the contact area of image sensing apparatus (2) sensitive surface.
Indication is expression hand (1) and specifies thing (to comprise each finger and specify thing time of contact CONSTRUCTED SPECIFICATION) starting point and the end that contact with the single of image sensing apparatus (2) sensitive surface Point constantly, and the starting point of current single time of contact is constantly and during between constantly one section of terminal point Between.
The indication way of contact represents hand (1) and specifies thing (to comprise each finger and specify thing CONSTRUCTED SPECIFICATION) with the single of image sensing apparatus (2) sensitive surface, repeatedly, single-point, many Point, dispersion, concentrate, the multiple contact method such as intersection, and the combination side of these contact methods Method. " single " expression hand (1) and appointment thing and image sensing apparatus (2) sensitive surface Once contact; " repeatedly " expression hand (1) and appointment thing and image sensing apparatus (2) induction The surface more than once contact; " single-point " expression hand (1) and appointment thing and image sensing dress The contact point of putting (2) sensitive surface only has one; " multiple spot " expression hand (1) and appointment thing With not only one of the contact point of image sensing apparatus (2) sensitive surface; " dispersion " expression hand (1) and specify thing and the contact point of image sensing apparatus (2) sensitive surface to have a plurality of and distribution Do not concentrate; " concentrate " expression hand (1) and specify thing and image sensing apparatus (2) induction table The contact point of face is concentrated and is distributed; " intersection " expression hand (1) and appointment thing and image sensing dress The contact point of putting (2) sensitive surface is cross-distribution. The multiple way of contact can also be arranged not Enumerate one by one, the compound mode that may exist of the above multiple way of contact can also be arranged, such as: Single-point multiple-contact, the contact of single single-point, multiple spot multiple-contact etc. mode.
According to exposure level information, time of contact information, way of contact information, can get in one's hands (1) and specify contact condition information on thing and image sensing apparatus (2) sensitive surface.
Embodiment:
Fig. 2 has provided the structure principle chart of image sensing apparatus.
Imageing sensor among Fig. 2 (1) can be other sensor devices such as CCD camera or COMS array, and sensitive surface (2) is hand and the assigned object surface in contact with image sensing apparatus, can be shapes such as plane, column, sphere.When hand and assigned object are in the sensing range of imageing sensor (1), imageing sensor (1) can perception in one's hands and assigned object with respect to the locus of sensitive surface (2), the locus that comprises the details of all fingers and assigned object is noted this locus simultaneously.When hand and assigned object move, imageing sensor (1) can perception the moving of in one's hands and assigned object, and follow the tracks of moving of hand and assigned object in good time.When hand and assigned object stop when mobile and the details of certain finger or assigned object stops to can be used as the preparatory stage that begins to contact with sensitive surface (2) when mobile.
When the details of hand and assigned object and certain finger or assigned object begins and sensitive surface (2) when contacting, the projection of details on sensitive surface (2) of hand and assigned object and certain finger or assigned object will change, and can think that the distortion of the big more projection of contact pressure also can be big more.The projected area of this moment can be thought with contact area corresponding, and projected area changes because of contact pressure, and imageing sensor (1) can be caught these image informations in good time, and passes to handling and analyzing of image information processing module (3).
Image information processing module (3) is in time analyzed each two field picture and adjacent front and back one two field picture, or several two field pictures in adjacent front and back compare, and just can get the variation of the position and the position thereof of in one's hands and assigned object.Also the variation of projected area and projected area be can calculate, and then the contact area and the duration of contact of corresponding hand and assigned object and sensitive surface calculated.Compare the alternate situation of each contact point, i.e. the change of each contact point can obtain the overall way of contact of these contact points.
These image informations have reflected the position of contact point on sensitive surface (2), and with the contact pressure of sensitive surface (2), and the contact of each contact point rises, end information such as moment.Through the processing and the analysis of the image information processing module (3) among Fig. 1, will extract and sell and the multiple spot contact condition information of assigned object and sensitive surface, promptly exposure level information, duration of contact information, way of contact information.
More than illustrated by handling of image information the overall process of multiple spot contact condition of in one's hands and assigned object and sensitive surface.Fig. 3 has provided the structure principle chart of the another kind of image sensing apparatus of same implementation procedure.
Fig. 3 is the structure principle chart of the image sensing apparatus of imageing sensor side.
Imageing sensor among Fig. 3 (1) can be other sensor devices such as CCD camera or COMS array, and sensitive surface (2) is hand and the assigned object surface in contact with image sensing apparatus, can be shapes such as plane, column, sphere.Reflective mirror (3) can reflex to hand and the assigned object incident light by sensitive surface (2) in the imageing sensor (1), and imageing sensor (1) can be worked by the imageing sensor among Fig. 2 as, and longitudinal size is reduced.
By handling of image information the device of multiple spot contact condition of in one's hands and assigned object and sensitive surface, its optical system ground design can also have multiple other types, but finally all will obtain hand and assigned object ground image information by imageing sensor, and by handling of image information the contact condition of in one's hands and assigned object.
Claims (4)
1. the multiple spot contact information acquisition system of a hand (and assigned object) is made up of image sensing apparatus and image information processing module, it is characterized in that:
Image sensing apparatus is made up of imageing sensor and sensitive surface, image sensing apparatus obtains hand and the assigned object image in the space in good time, and hand and the projection of assigned object on the sensitive surface of image sensing apparatus, image information processing module is analyzed in good time and is extracted and sell and the space physics coordinate of assigned object and the mobile message of hand and assigned object, and the projected area on sensitive surface, and then the multiple spot contact condition of sensitive surface of in one's hands and assigned object and image sensing apparatus.
2. according to the described computer input of claim 1, it is characterized in that:
The multiple spot contact condition of hand and assigned object is meant exposure level, duration of contact and the way of contact on hand and assigned object and the image sensing apparatus sensitive surface.
3. according to the described computer input of claim 1, it is characterized in that:
The position of the imageing sensor of image sensing apparatus can be below sensitive surface and the side, when in the side, needs tiltedly put a reflective mirror below sensitive surface.
4. according to the described computer input of claim 2, it is characterized in that:
The exposure level of hand and assigned object is expression hand and assigned object (comprising each finger and assigned object CONSTRUCTED SPECIFICATION) and the size of the contact pressure of the sensitive surface of image sensing apparatus, and with the size of the contact area of the sensitive surface of image sensing apparatus; The way of contact of hand and assigned object represent hand and assigned object (comprising each finger and assigned object CONSTRUCTED SPECIFICATION) with the single of image sensing apparatus sensitive surface, repeatedly, single-point, multiple spot, dispersion, the multiple contact method and the combined method of these contact methods such as concentrate, intersect; The duration of contact of hand and assigned object be the starting point that contact with the single of the sensitive surface of image sensing apparatus of expression hand and assigned object (comprising each finger and assigned object CONSTRUCTED SPECIFICATION) and terminal point constantly, and the starting point moment and terminal point a period of time between the moment of current single duration of contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119169 CN1434367A (en) | 2003-03-17 | 2003-03-17 | Multi-point information collection system for hand (and assigned object) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119169 CN1434367A (en) | 2003-03-17 | 2003-03-17 | Multi-point information collection system for hand (and assigned object) |
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| Publication Number | Publication Date |
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| CN1434367A true CN1434367A (en) | 2003-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03119169 Pending CN1434367A (en) | 2003-03-17 | 2003-03-17 | Multi-point information collection system for hand (and assigned object) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072949A (en) * | 2020-09-18 | 2020-12-11 | 郑州科技学院 | Tactile sensor for determining contact surface area |
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2003
- 2003-03-17 CN CN 03119169 patent/CN1434367A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072949A (en) * | 2020-09-18 | 2020-12-11 | 郑州科技学院 | Tactile sensor for determining contact surface area |
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