CN1230729C - Em induction system possessing independent induction loops and multiple induction loops - Google Patents
Em induction system possessing independent induction loops and multiple induction loops Download PDFInfo
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- CN1230729C CN1230729C CNB031029450A CN03102945A CN1230729C CN 1230729 C CN1230729 C CN 1230729C CN B031029450 A CNB031029450 A CN B031029450A CN 03102945 A CN03102945 A CN 03102945A CN 1230729 C CN1230729 C CN 1230729C
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Abstract
The present invention relates to an electromagnetic induction system with multiple induction loops. A plurality of independent induction loops are arranged in the electromagnetic induction system, and the configuration of an induction loop is formed from induction loops having jagged regions and simulated closed regions, which are formed by n-shaped sections with same phases and opposite phases, so as to reduce used switches; the induction loops of the X axis and the Y axis are completely arranged on the same contact point so as to effectively reduce the space needed by the electromagnetic system, thereby increasing the use area of a panel; at the same time, in order to further intensify the capability of the electromagnetic system of resisting noise interference, a plurality of independent induction loops are arranged on the periphery of the induction loop so as to isolate the interference of noise to the induction loop, thereby relatively enhancing the linearity and the efficiency of the electromagnetic system.
Description
Technical field
The present invention relates to a kind of EM induction system of loop inductance, particularly a kind of EM induction system with independent loop inductance and multiplex induction loop.
Background technology
Because hand-written input circuit equipment can replace mouse, and more is fit to allow the user carry out the input of literal and pattern in the mode of artificial input than mouse, so the improvement of hand-written input circuit equipment is the field of rapid development in recent years.Early stage hand-written input circuit equipment replaces mouse with pen; and in order to promote the user at operational convenience; usually with wireless indicator equipment (pen, mouse, positioning disk .... or the like) the two replaces mouse with digiboard (tablet), wherein the nib of wireless pen usually can be corresponding with the left button of mouse.Year more than though traditional pen type input product has been gone, yet like product all only biases toward in the application of simple functions such as drawing or input in Chinese.
Traditional EM induction system has the transducer/pointing device of a digiboard and a mouse or pen type.Generally speaking, on the surface of digiboard, determine the position of a described point that two kinds of patterns are arranged: one is relative pattern, and another is an absolute mode.General mouse device is with relative mode operating, when mouse slides on the digiboard surface, computer system can receive the input from mouse, it only can this mouse of identification relatively moving on X and Y direction, a kind of general technology is to utilize a sensing apparatus in this mouse, forming a pair of mutually perpendicular figure signal, this is vertically corresponding with horizontal mobile phase to signal and this mouse.Relatively, the cursor device in the digiboard, for example, wireless indicator equipment generally operates under absolute mode.If mention this cursor device, and move on the another location on its digiboard surface, for this computer system, signal can change to react a new absolute position of this cursor device.Now, existing several different methods is with deciding this cursor device in the lip-deep position of the digiboard of its support, and wherein, the electromagnetic field inducing technology is a kind of technology that is widely used in absolute mode.Early stage transducer/pointing device is to be connected to digiboard by multiconductor cable, is sent in the computer system via the information of computer transmission interface with position and button/pressure again.Wireless type transducer/pointing device in some conventional art, once represented the non-orientation state of transducer/pointing device function by the mode of frequency of utilization and/or phase change, these functions have: the button of pressing, the pressure of pointing device, or similar function etc.Yet if there is not scrupulous processing, the change of frequency is easily because multiple external factor, as metal, noise, external electromagnetic field .... or the like, and then cause erroneous judgement on the pointing device function.Particularly in bigger digiboard, it is obvious more that these problems become.The improving technology of traditional digiboard system allows the user to use described point equipment with double mode function mode, therefore can provide to relatively move or the information of absolute position under user's control.
Existing pointing device formula input product is generally a kind of electromagnetic induction circuit arrangement.Electromagnetic induction device comprises an electromagnetism pointing device (electromagnetic pointer) and a digiboard (digitizer tablet usually; Be called for short tablet later on).Have the energy of a battery in the electromagnetism pointing device, and have a concussion circuit in the electromagnetism pointing device with supply emission associated electrical magnetic signal.With the electromagnetism pointing device is example, when touching the nib of pointing device, will produce the variation of inductance value, thereby makes the concussion frequency also change thereupon.The variation of the big more then inductance value of pressure that presses the pointing device tip is big more, thereby the variable quantity of concussion frequency is big more, so by the variation size of frequency, just know the size that puts on the pointing device tip pressure.Two switch keys are also arranged on the side of wireless indicator equipment, add/do not add vibration by the joint of button/leave the specific capacitor that makes in the oscillator, thereby change the transmission frequency of pointing device, by the difference of frequency, can predict why button of switch key that the user presses.In addition, digiboard (tablet) has also comprised detecting loop (detective loop), amplifier (amplifier), analog-digital converter (Analog to Digital Converter; Element such as ADC).The zone is write by the central authorities of the handwriting pad of this quasi-tradition, is formed by weaving by loop inductance, in this zone, with the two-sided layout of circuit board and use two axially with the equidistant loop inductances of arranging of array way.The main application of this loop inductance only is to receive the electromagnetic signal that the special electromagnetic pointing device is launched.When electromagnetism pointing device emission electromagnetic signal, loop inductance will receive this electromagnetic signal, and via the processing of circuit, and obtain the pointing device relevant information.
Generally speaking, the loop inductance of traditional electromagnetic induction device and topological design thereof equidistantly are arranged in grid network with loop inductance with X, Y-axis array, draw its absolute coordinates with inductive electromagnetic pointing device and calculating.With reference to the loop inductance layout shown in Figure 1A along the configuration of the directions X of two-dimensional quadrature coordinate (two-dimensionorthogonal coordinates), the end of each loop inductance 110A connects a switch (X1 to X25) respectively, and its other end is total to contact 115 with a ground wire respectively and is connected, thus, the signal responded to of each loop inductance 110A can obtain via the control in proper order to switch X1 to X25.Because magnetic field intensity and square distance are inversely proportional to, the electromagnetism pointing device of launching electromagnetic field when far away more, can make that the received signal of loop inductance is faint more apart from antenna; Relatively, the electromagnetism pointing device of emission electromagnetic field when near more, can make that the received signal of antenna is strong more apart from antenna.Therefore,, and analyze the received signal power of each loop inductance, be positioned at the scope of that strip antenna just can learn the electromagnetism pointing device, and then calculate its position coordinates as long as allow the microprocessor all loop inductances of P-SCAN one by one of digiboard.Yet for large-area digiboard, the loop inductance quantity of its layout also increases thereupon, so need more switches.The artificial shortcoming of improving the too much switch of above-mentioned use of this case invention proposes the quantity that a kind of method of utilizing the ㄇ type zone of increase loop inductance reduces switch.Shown in Figure 1B, each loop inductance (X1-X9 and XA-XC) is along the direction configuration of the X-axis of rectangular coordinate, and it is made up of a plurality of ㄇ type section 120 respectively.For each loop inductance (X1-X9 and XA-XC) that is arranged in equidirectional, other ㄇ type section that each ㄇ type section 120 is adjacent adheres to different loop inductances separately, so can tell electromagnetism pointer equipment and be arranged on a certain ㄇ type section of loop inductance.For example, the ㄇ type section 120A of loop inductance X5, the ㄇ type section 130 and 140 of other loop inductance that it is adjacent belongs to loop inductance X4 and X6.In addition, another ㄇ type section 120B of loop inductance X5, the ㄇ type section 150 and 160 of other loop inductance that it is adjacent belongs to loop inductance X2 and XC.When the position of electromagnetism pointer equipment during in the ㄇ of loop inductance X5 type section 120A or 120B, by the signal that is produced with reference to other adjacent loop inductance X4, X6, XC and X2, the position that can tell electromagnetism pointer equipment is arranged on the 120A or 120B of ㄇ type section of loop inductance X5.Therefore, as mentioned above, the number of switches among Figure 1A (25 switches are arranged altogether) is greater than the number of switches among Figure 1B (meter uses 12 switches).In addition, in traditional loop inductance configuration, must note the distance between two adjacent ㄇ type sections in the same loop inductance, for example, two adjacent ㄇ type section 120A among the loop inductance X5 and the distance " L " between the 120B.If this spacing L is too little, then when judging the position of electromagnetism indicator device, easily cause the result of erroneous judgement.
On the other hand, information products are handled with how H.D direction towards two-forty and are developed now, yet when processing speed is fast more, the easy more phenomenon of supervening electromagnetic interference (EMI).Especially when EM induction system and other electronics were combined into a system, the edge part of loop inductance very easily was subjected to the interference of induction field.For example, when the panel (Liquid Crystal Device Monitor Panel) that loop inductance is put into LCD is gone up, because the TFT transistor driving IC on the panel of LCD can produce electromagnetic interference (EMI) with the power converter (PowerInverter) of lighting the LCD fluorescent tube, and influence puts in place at the loop inductance at EM induction system edge, therefore when LCD when operating, can on panel, produce an electromagnetic field (variance electromagnetic field) that changes, cause the loop inductance Distribution of Magnetic Field that is positioned at the EM induction system edge inhomogeneous, therefore when loop inductance during in received signal, this electromagnetic field will interfere with the receiving quality of loop inductance, causes the edge linearity of loop inductance bad.
The problems referred to above also are to avoid for using the system of loop inductance.Especially required have for the large-area digiboard for commercial, the quantity of its loop inductance also increases thereupon, therefore when the loop inductance at edge is subjected to electromagnetic interference, this electromagnetism noise can be along with the configuration of loop inductance, make other loop section also be interfered, therefore cause the bad situation of the multi-region linearity, make the quality variation of EM induction system.
Summary of the invention
In view of the aforementioned technical background, for the interference resistant interference capability of strengthening EM induction system and the function of possessing the multiplex induction loop of EM induction system, the invention provides a kind of EM induction system, in order to strengthen the interference resistant interference capability of above-mentioned EM induction system with independent loop inductance and multiplex induction loop.
Fundamental purpose of the present invention is to overcome the deficiencies in the prior art and defective, and a kind of EM induction system with independent loop inductance and multiplex induction loop is provided, and it comprises:
One independent loop inductance, one end and one first switch combination are coupled electrically, and its other end is coupled electrically with having contact altogether, to form independently ㄇ type zone;
One multiplex induction loop, it further comprises:
A plurality of first loop inductances, it is disposed at the left and right sides of this a plurality of first loop inductance along X-direction configuration and above-mentioned independent loop inductance in X-direction, one end and second switch combination coupling electrically, its other end is coupled electrically with having contact altogether, and each this first loop inductance has a plurality of plans like the closed region; And
A plurality of second loop inductances, it is disposed at the both sides up and down of this a plurality of second loop inductance along Y direction configuration and above-mentioned independent loop inductance in Y direction, one end and one the 3rd switch combination are coupled electrically, its other end was coupled electrically with being total to contact, and each this second loop inductance has a plurality of plans like the closed region;
One contact altogether, it is coupled electrically with this independent loop inductance, this a plurality of first loop inductance and these a plurality of second loop inductance respectively;
One this first switch combination, itself and this independent loop inductance is coupled electrically;
One this second switch combination, it is coupled electrically with these a plurality of first loop inductance respectively; And
One the 3rd switch combination, it is coupled electrically with these a plurality of second loop inductance respectively.
Because the present invention adds a plurality of independently loop inductances in the EM induction system with multiplex induction loop configuration.The present invention has indented region and the multiplex induction loop that loop inductance was constituted of intending like the closed region by the ㄇ type section of same-phase and antiphase to form, so that can reduce the quantity that switch uses, and the loop inductance of X-axis and Y-axis is disposed on the same common joint fully, therefore, the present invention can effectively reduce the space requirement of EM induction system, so that the usable floor area of panel can increase.Simultaneously, the present invention is in order further to strengthen the interference resistant interference capability of EM induction system, all around going up more in the multiplex induction loop, add a plurality of independently loop inductances, in order to isolate the interference of noise, so that the linearity of EM induction system and usefulness all can relatively be improved to loop inductance.
According to above-described purpose, the present invention also provides a kind of EM induction system with independent loop inductance and multiplex induction loop, and it comprises:
One independent loop inductance disposes along the left side of X-axis and the top and the bottom of right side and Y-axis separately with two strip antennas, and one end and one first switch combination are coupled electrically, and its other end is coupled electrically with having contact altogether, to form independently ㄇ type zone;
One multiplex induction loop, it further comprises:
A plurality of first loop inductances, it is along X-direction configuration and place between this antenna of this independent loop inductance X-direction, one end and second switch combination coupling electrically, its other end is coupled electrically with having contact altogether, and each this first loop inductance has a plurality of plans like the closed region; And
A plurality of second loop inductances, it is along Y direction configuration and place between this antenna of this independent loop inductance Y direction, one end and one the 3rd switch combination are coupled electrically, its other end was coupled electrically with being total to contact, and each this second loop inductance has a plurality of plans like the closed region;
One contact altogether, it is coupled electrically with this independent loop inductance, this a plurality of first loop inductance and these a plurality of second loop inductance respectively;
One this first switch combination, itself and this independent loop inductance is coupled electrically;
One this second switch combination, it is coupled electrically with these a plurality of first loop inductance respectively; And
One the 3rd switch combination, it is coupled electrically with these a plurality of second loop inductance respectively.
Description of drawings
Figure 1A is depicted as the loop inductance layout of traditional EM induction system at the axial synoptic diagram of x;
Figure 1B is depicted as the EM induction system synoptic diagram with multiplex induction loop;
Fig. 2 A is the configuration mode synoptic diagram of independent loop inductance according to the present invention in X-axis;
Fig. 2 B is the configuration mode synoptic diagram of independent loop inductance according to the present invention in Y-axis;
Fig. 2 C is according to independent loop inductance of the present invention and the multiplex induction loop configuration mode synoptic diagram in EM induction system;
Fig. 3 A is for intending the seemingly loop inductance synoptic diagram of closed region according to the same-phase that has in the embodiment of the invention;
Fig. 3 B is for intending the seemingly loop inductance synoptic diagram of closed region according to the antiphase that has in the embodiment of the invention;
Fig. 3 C is according to the configuration mode synoptic diagram of multiplex induction of the present invention loop in EM induction system.
Symbol description among the figure
The independent loop inductance of 100A X-axis (synoptic diagram that only shows two loop inductances)
The independent loop inductance of 100B Y-axis (synoptic diagram that only shows two loop inductances)
105A independence loop inductance is at the switch of X-axis
105B independence loop inductance is at the switch of Y-axis
110 loop inductances
115 ground wires are contact altogether
The switch of X1-X25 X-axis
The switch of X1-X9 X-axis
The switch of XA-XC X-axis
200 multiplex induction loops
The multiplex induction loop of 200A X-axis (only being the synoptic diagram of a certain loop inductance)
The multiplex induction loop of 200B Y-axis (only being the synoptic diagram of a certain loop inductance)
210 switches corresponding with the multiplex induction loop
The switch that 210A is corresponding with the multiplex induction loop of X-axis
The switch that 210B is corresponding with the multiplex induction loop of Y-axis
220 are total to contact
230A the one ㄇ shape section
230B the 2nd ㄇ shape section
230C the 3rd ㄇ shape section
240C the 4th ㄇ shape section
240B the 5th ㄇ shape section
240A the 6th ㄇ shape section
250A intends like the closed region
250B intends like the closed region
250C intends like the closed region
260A first indented region
260B second indented region
The spacing of the Different Logic loop inductance of the same entity loop inductance of L
Embodiment
The present invention is the EM induction system in a kind of concrete independent loop inductance and multiplex induction loop in this direction of inquiring into.Description to loop inductance in following explanation does not comprise entire flow.The prior art that the present invention continued to use is only done quoting of emphasis formula at this, to help elaboration of the present invention.And relevant accompanying drawing is not also drawn according to actual ratio in the following literary composition, and its effect is only being expressed architectural feature of the present invention.Apparently, execution of the present invention is not defined in the specific details that engineering technical personnel were familiar with of EM induction system.On the other hand, well-known element and program also are not described in the details, with the restriction of avoiding causing the present invention unnecessary.Preferred embodiment meeting of the present invention is described in detail as follows, yet except these were described in detail, the present invention can also implement in other embodiments widely, and scope of the present invention do not limited, and its scope with claims is as the criterion.
The present invention discloses a kind of EM induction system with independent loop inductance and multiplex induction loop, comprise: an independent loop inductance, dispose along the left side of X-axis and the top and the bottom of right side and Y-axis, one end and one first switch combination are coupled electrically, its other end is coupled electrically with having contact altogether, to form independently ㄇ type zone.One multiplex induction loop, it further comprises: a plurality of first loop inductances, and it disposes along X-direction, one end and second switch combination coupling electrically, its other end is coupled electrically with having contact altogether, and each first loop inductance has a plurality of plans like the closed region; A plurality of second loop inductances, it disposes along Y direction, and one end and one the 3rd switch combination are coupled electrically, and its other end is coupled electrically with having contact altogether, and each second loop inductance has a plurality of plans like the closed region.Contact altogether, it is coupled electrically with independent loop inductance and a plurality of first loop inductances and a plurality of second loop inductances respectively.First switch combination, it is coupled electrically with a plurality of independent loop inductances respectively.The second switch combination, it is coupled electrically with a plurality of first loop inductances respectively, and the 3rd switch combination, and it is coupled electrically with a plurality of second loop inductances respectively.
The present invention further discloses a kind of EM induction system with independent loop inductance and multiplex induction loop, comprise: an independent loop inductance, with two independently loop inductance separately along the left side of X-axis and the top of right side and Y-axis and following configuration, one end and one first switch combination are coupled electrically, its other end is coupled electrically with having contact altogether, to form independently ㄇ type zone.One multiplex induction loop, it further comprises: a plurality of first loop inductances, and it disposes along X-direction, one end and second switch combination coupling electrically, its other end is coupled electrically with having contact altogether, and each this first loop inductance has a plurality of plans like the closed region; A plurality of second loop inductances, it disposes along Y direction, and one end and one the 3rd switch combination are coupled electrically, and its other end is coupled electrically with having contact altogether, and each this second loop inductance has a plurality of plans like the closed region.Contact altogether, it is coupled electrically with independent loop inductance and a plurality of first loop inductances and a plurality of second loop inductances respectively.First switch combination, it is coupled electrically with these a plurality of first independent loop inductance respectively.The second switch combination, it is coupled electrically with these a plurality of first loop inductance respectively, and the 3rd switch combination, and it is coupled electrically with a plurality of second loop inductances respectively.
Next be the detailed description of the specific embodiment of the invention.The part of independent loop inductance at first is described, and please refer to Fig. 2 A to Fig. 2 C.Fig. 2 A is the configuration mode of independence loop inductance 100A of the present invention on X-direction, and its loop inductance 100A that a plurality of are independent is disposed at the leftmost side and the rightmost side of X-axis respectively.This independently the end of loop inductance 100A be connected with an analog switch 10SA, its other end then is connected with contact 220 altogether.Simultaneously, then be the configuration space of loop inductance 200 between independent loop inductance 100A, and the ㄇ type section of the ㄇ type section of independent loop inductance 100A and loop inductance 200 have partly overlapping.Fig. 2 B then is the configuration mode of independence loop inductance 100B of the present invention on Y direction, and the top that its loop inductance 100B that a plurality of are independent is disposed at Y-axis respectively reaches bottom.This independently the end of loop inductance 100B be connected with an analog switch 105B, its other end then is connected with contact 220 altogether.Simultaneously, then be the configuration space of loop inductance 200 between independent loop inductance 100B, and the ㄇ type section of the ㄇ type section of independent loop inductance 100B and loop inductance 200 also have partly overlapping.Fig. 2 C is the actual disposition synoptic diagram of independence loop inductance of the present invention in EM induction system.
The part in multiplex induction of the present invention loop then is described, and please refer to Fig. 3 A to Fig. 3 C.Multiplex induction loop 200 as shown in Figure 3A, wherein, an end in multiplex induction loop 200 and a switch 210 electrical couplings, and the other end in multiplex induction loop 200 and contact 220 electrical couplings altogether.Multiplex induction loop 200 comprises a plurality of ㄇ shape sections, for example, the one ㄇ shape section 230A, the 2nd ㄇ shape section 230B, the 3rd ㄇ shape section 230C and the 4th ㄇ shape section 240C, the 5th ㄇ shape section 240B, the 6th ㄇ shape section 240A, and a plurality of ㄇ shape section 230A to 230C form one first indented region 260A, and a plurality of ㄇ shape section 240A to 240C forms one second indented region 260B; The second indented region 260B forms a relative closed type loop inductance with the first indented region 260A, and wherein, each ㄇ shape section 230A to 230C is relative with each ㄇ shape section 240A to 240C respectively, intends like closed region 250A to 250C to form respectively.
Please continue 3A with reference to figure, when a plurality of plans are " same-phase " each other like closed region 250A to 250C, then above-mentioned multiplex induction loop 200 is formed by the mode of noninterlace, and the mode of its formation is described as follows: at first, loop inductance 200 extends upward and forms a ㄇ type section 230A from switch 210, then, extend and form in regular turn the 2nd ㄇ type section 230B and the 3rd ㄇ type section 230C via a ㄇ type section 230A, wherein, the one ㄇ type section 230A, the 2nd ㄇ type section 230B and the 3rd ㄇ type section 230C link in regular turn mutually forming the first indented region 260A, and a ㄇ type section 230A, the recess of the 2nd ㄇ type section 230B and the 3rd ㄇ type section 230C is towards identical opening direction.Then, extend downwards to form the 4th ㄇ type zone 240C from the 3rd ㄇ type section 230C in multiplex induction loop 200, then, extend and form in regular turn the 5th ㄇ type section 240B and the 6th ㄇ type section 240A via the 4th ㄇ type section 240C, wherein, the 4th ㄇ type section 240C, the 5th ㄇ type section 240B and the 6th ㄇ type section 240A link in regular turn mutually to form the second indented region 260B, and the 4th ㄇ type section 240C, the recess of the 5th ㄇ type section 240B and the 6th ㄇ type section 240A is towards identical opening direction, and a plurality of ㄇ type section 240A, the opening direction of the recess of 240B and 240C respectively with a plurality of ㄇ type section 230A, the opening direction of the recess of 243B and 230C toward each other.At last, loop inductance 200 is connected with contact 220 altogether via the 6th ㄇ shape section 240A, wherein, the opening direction of a recess ㄇ type section 230A respect to one another and the 6th ㄇ type section 240A form one first and intend like closed region 250A, and the opening direction of recess the 2nd ㄇ type section 230B respect to one another and the 5th ㄇ type section 240B form one second plan like closed region 250B, same, the opening direction of recess the 3rd ㄇ type section 230C respect to one another and the 4th ㄇ type section 240C form one the 3rd and intend like closed region 250C.
Then please continue with reference to figure 3B, when a plurality of plans are " antiphase " each other like closed region 250A to 250C, then above-mentioned multiplex induction loop 200 is formed by staggered mode, and the mode of its formation is described as follows: at first, loop inductance 200 extends upward and forms a ㄇ type section 230A from switch 210, then, extend and form in regular turn the 5th ㄇ type section 240B via a ㄇ type section 230A, wherein, the opening direction of the recess of the one ㄇ type section 230A is opposite with the opening direction of the recess of the 5th ㄇ type section 240B, and the opening direction of the recess of the 3rd ㄇ type section 230C is identical with a ㄇ type section 230A; Afterwards, loop inductance 200 extends downwards to form the 4th ㄇ type zone 240C from the 3rd ㄇ type section 230C, then, extend and form in regular turn the 2nd ㄇ type section 230B via the 4th ㄇ type section 240C, wherein, the opening direction of the recess of the opening direction of the recess of the 4th ㄇ type section 240C and the 3rd ㄇ type section 230C toward each other, and the opening direction of the recess of the 2nd ㄇ type section 230B is identical with the opening direction of the recess of the 3rd ㄇ type section 230C, simultaneously, the opening direction of the recess of the 2nd ㄇ type section 230B is opposite with the opening direction of the recess of the 4th ㄇ type section 240C.Then, extend and form the 6th ㄇ type section 240A via the 2nd ㄇ type section 230B, wherein, the opening direction of the recess of the opening direction of the recess of the 6th ㄇ type section 240A and a ㄇ type section 230A toward each other, and the opening direction of the recess of the 6th ㄇ type section 240A is identical with the opening direction of the recess of the 5th ㄇ type section 240B.At last, loop inductance 200 is connected with contact 220 altogether via the 6th ㄇ type section 240A.
In addition, the reciprocal ㄇ type section 230A of phase place, the 2nd ㄇ type section 230B and the 3rd ㄇ type section 230C form the first indented region 260A, and reciprocal the 4th ㄇ type section 240C of phase place, the 5th ㄇ type section 240B and the 6th ㄇ type section 240A form the second indented region 260B.Moreover, mutually the same ㄇ type section 230A of phase place and the 6th ㄇ type section 240A form one first and intend like closed region 250A, and mutually the same the 2nd ㄇ type section 230B and the 5th ㄇ type section 240B of phase place forms one second plan like closed region 250B, same, the 3rd ㄇ type section 230C that phase place is mutually the same and the 4th ㄇ type section 240C form one the 3rd and intend like closed region 250C.
From the above mentioned, this multiplex induction loop is one " entity loop inductance " (physicalantenna loop), and its plan of the 250A that forms, 250B and 250C be a plurality of " logic loop inductances " (logical antenna loop) like the loop inductance of closed region, that is one the entity loop inductance will comprise a plurality of logic loop inductances, this promptly is that present technique is called the reason of " loop inductance ".Simultaneously, this plan adjacent one another are is like closed region 250A, 250B and the opposite state of phase place that 250C presents, when multiplex induction loop 200 itself is subjected to the interference of external electromagnetic field, it can be by the opposite plan adjacent one another are of phase place like closed region 250A, 250B and 250C, cancel out each other with the opposite voltage of polarization, thereby the configuration mode in this multiplex induction loop 200 promptly has the function of eliminating external noise interference.
Fig. 3 C is the synoptic diagram of multiplex induction of the present invention loop 200 when being disposed at EM induction system, its loop inductance 200A and 200B dispose along the direction of X-axis and Y-axis respectively, and it forms X-axis with antiphase and the loop inductance of Y direction like closed region 250A, 250B and 250C and 270A, 270B and 270C in staggered mode by a plurality of plans respectively, wherein, the end of loop inductance 200A and 200B is connected with contact altogether respectively, and its other end then is connected with 210B with switch 210A respectively.
In addition, must be noted that the distance between the two adjacent logic loop inductances necessary suitably (for example: two adjacent ㄇ shape logic loop inductance 230A in the entity loop inductance and the distance L between the 230B) in the same entity loop inductance; If spacing L is too little, then when the position of decision pointing device, easily cause the result of erroneous judgement.
In the above embodiments of the present invention, each bar entity loop inductance can so can make the intensity of entity electromagnetic signal that loop inductance is launched increase form a ㄇ shape logic loop inductance again behind the plural number circle.Simultaneously, use each bar entity loop inductance behind the plural number circle, the ㄇ shape logic loop inductance that forms can improve the voltage signal intensity of this loop inductance, use EM induction system of the present invention to have splendid interference resistant ability, make the degree of stability of system significantly promote.
As mentioned above, the present invention is by a kind of a plurality of independently configurations of loop inductance of adding in the EM induction system with multiplex induction loop configuration.The present invention has indented region and the multiplex induction loop that loop inductance was constituted of intending like the closed region for the ㄇ type section by same-phase and antiphase to form, so that can reduce the quantity that switch uses, and the loop inductance of X-axis and Y-axis is disposed on the same common joint fully, therefore, the present invention can effectively reduce the space requirement of EM induction system, so that the usable floor area of panel can increase.Simultaneously, the present invention is in order further to strengthen the interference resistant interference capability of EM induction system, more the going up of multiplex induction loop, adds a plurality of independently loop inductances, in order to isolate the interference of noise to loop inductance all around.Therefore, when the independent loop inductance when the position at the EM induction system edge is subjected to the noise interference, it only can have influence on the part of independent loop inductance, and be positioned in the middle of the EM induction system part of loop inductance partly, then can not be affected, so have the configuration mode of independent loop inductance and loop inductance, the linearity of EM induction system and usefulness all can relatively be improved.
Apparently, according to the description among the top embodiment, the present invention has many corrections and difference.Therefore need be understood in the scope of its claims, except above-mentioned detailed description, the present invention can also implement widely in other embodiments.
Above-mentioned is preferred embodiment of the present invention only, is not in order to limit protection scope of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the scope of claims.
Claims (10)
1. the EM induction system with independent loop inductance and multiplex induction loop is characterized in that, comprising:
One independent loop inductance, one end and one first switch combination are coupled electrically, and its other end is coupled electrically with having contact altogether, to form independently ㄇ type zone;
One multiplex induction loop, it further comprises:
A plurality of first loop inductances, it is disposed at the left and right sides of this a plurality of first loop inductance along X-direction configuration and above-mentioned independent loop inductance in X-direction, one end and second switch combination coupling electrically, its other end is coupled electrically with having contact altogether, and each this first loop inductance has a plurality of plans like the closed region; And
A plurality of second loop inductances, it is disposed at the both sides up and down of this a plurality of second loop inductance along Y direction configuration and above-mentioned independent loop inductance in Y direction, one end and one the 3rd switch combination are coupled electrically, its other end was coupled electrically with being total to contact, and each this second loop inductance has a plurality of plans like the closed region;
One contact altogether, it is coupled electrically with this independent loop inductance, this a plurality of first loop inductance and these a plurality of second loop inductance respectively;
One this first switch combination, itself and this independent loop inductance is coupled electrically;
One this second switch combination, it is coupled electrically with these a plurality of first loop inductance respectively; And
One the 3rd switch combination, it is coupled electrically with these a plurality of second loop inductance respectively.
2. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 1 is characterized in that this independent loop inductance is made up of a plurality of loop inductances.
3. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 1 is characterized in that, this a plurality of first loop inductance and these a plurality of second loop inductance dispose alternately along X-direction and Y direction in regular turn.
4. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 1, it is characterized in that the formed ㄇ type of this independent loop inductance zone and this a plurality of first loop inductance and this a plurality of formed plan of second loop inductance are overlapping each other like the closed region.
5. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 1 is characterized in that, this first switch and this second switch are a simulation multichannel selector switch.
6. the EM induction system with independent loop inductance and multiplex induction loop is characterized in that, comprising:
One independent loop inductance disposes along the left side of X-axis and the top and the bottom of right side and Y-axis separately with two strip antennas, and one end and one first switch combination are coupled electrically, and its other end is coupled electrically with having contact altogether, to form independently ㄇ type zone;
One multiplex induction loop, it further comprises:
A plurality of first loop inductances, it is along X-direction configuration and place between this antenna of this independent loop inductance X-direction, one end and second switch combination coupling electrically, its other end is coupled electrically with having contact altogether, and each this first loop inductance has a plurality of plans like the closed region; And
A plurality of second loop inductances, it is along Y direction configuration and place between this antenna of this independent loop inductance Y direction, one end and one the 3rd switch combination are coupled electrically, its other end was coupled electrically with being total to contact, and each this second loop inductance has a plurality of plans like the closed region;
One contact altogether, it is coupled electrically with this independent loop inductance, this a plurality of first loop inductance and these a plurality of second loop inductance respectively;
One this first switch combination, itself and this independent loop inductance is coupled electrically;
One this second switch combination, it is coupled electrically with these a plurality of first loop inductance respectively; And
One the 3rd switch combination, it is coupled electrically with these a plurality of second loop inductance respectively.
7. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 6 is characterized in that, this a plurality of first loop inductance and these a plurality of second loop inductance dispose alternately along X-direction and Y direction in regular turn.
8. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 6, it is characterized in that the formed ㄇ type of this independent loop inductance zone and this a plurality of first loop inductance and this a plurality of formed plan of second loop inductance are overlapping each other like the closed region.
9. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 6 is characterized in that, this first switch and this second switch are a simulation multichannel selector switch.
10. the EM induction system with independent loop inductance and multiplex induction loop as claimed in claim 6 is characterized in that the earth point of this common contact and this EM induction system is coupled electrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031029450A CN1230729C (en) | 2003-01-24 | 2003-01-24 | Em induction system possessing independent induction loops and multiple induction loops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031029450A CN1230729C (en) | 2003-01-24 | 2003-01-24 | Em induction system possessing independent induction loops and multiple induction loops |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1519772A CN1519772A (en) | 2004-08-11 |
| CN1230729C true CN1230729C (en) | 2005-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031029450A Expired - Lifetime CN1230729C (en) | 2003-01-24 | 2003-01-24 | Em induction system possessing independent induction loops and multiple induction loops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1230729C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988374B (en) * | 2005-12-20 | 2010-10-06 | 太瀚科技股份有限公司 | Inductance control system and method for control sound volume |
| CN102035060B (en) * | 2009-09-30 | 2013-07-03 | 太瀚科技股份有限公司 | Antenna loop layout for electromagnetic induction system |
-
2003
- 2003-01-24 CN CNB031029450A patent/CN1230729C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1519772A (en) | 2004-08-11 |
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