CN103019425A - Dual-mode digital board and method for detecting and switching input signal thereof - Google Patents
Dual-mode digital board and method for detecting and switching input signal thereof Download PDFInfo
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- CN103019425A CN103019425A CN2011102994978A CN201110299497A CN103019425A CN 103019425 A CN103019425 A CN 103019425A CN 2011102994978 A CN2011102994978 A CN 2011102994978A CN 201110299497 A CN201110299497 A CN 201110299497A CN 103019425 A CN103019425 A CN 103019425A
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Abstract
The invention discloses a dual-mode digital board and a method for detecting and switching an input signal thereof, which are applied to a digital board provided with an electromagnetic induction module and a touch control input module. The method for detecting and switching comprises the following steps that a microprocessor connects an induction coil group with the electromagnetic induction module; the microprocessor detects whether an electromagnetic induction signal is transmitted inwards; after the electromagnetic induction module finishes receiving an electromagnetic induction signal, the microprocessor switches the induction coil group and connects the induction coil group to the touch control input module; while receiving a touch control input signal, the microprocessor connects the induction coil group to any one of the electromagnetic induction module or the touch control input module in sequence; and when the microprocessor detects that an electromagnetic induction signal is transmitted inwards, the microprocessor connects the electromagnetic induction module to the induction coil group continuously till all electromagnetic induction signals are received.
Description
Technical field
The present invention relates to a kind of digiboard and input and changing method, particularly detection and the changing method of a kind of double modulus letter stencil and its input signal.
Background technology
Along with the fast development of science and technology, also drive the generation of the man-machine interface of many touching operations.Such mode of operation not only can be used in independently on the digiboard, also can be used in the display device.Generally speaking, the touching operation can be divided into pen type operation and finger manipulation.The pen type touch-control is by the electromagnetic change between digiboard and time writer and then detects its correspondence position.Finger manipulation then is that the capacitance variations that produces when pressing digiboard is judged its correspondence position.
Because therefore the facility that aforementioned touch technology brings more has manufacturer that aforementioned touch technology has been done further with display device and is combined, at this it is defined as touch control display.Please refer to shown in Figure 1ly, it is the configuration diagram for the double modulus letter stencil of prior art.The touch control display 100 of prior art is to have simultaneously electromagnetic signal receiver module 110 and touch-control sensing module 121.The user can write by pen on display or hand-written mode operates, for the more operation of intuition of user.
Although it is above-mentioned that the touch control display 100 of prior art has advantages of, the difficulty on the manufacture and maintain is arranged but for manufacturer.Because the touch control display 100 of prior art is made of with display driver 151 with touch-control sensing module 121, display unit 141 many groups induction antenna 112, electromagnetic signal receiver module 110.Switch electromagnetic signal receiver modules 110 and touch-control sensing module 121 in order to receiving electromagnetic signals or touching signals by processing unit 131.When the item in the display occurs to damage, will be so that whole touch control display 100 must send factory's maintenance.Therefore the manufacturing cost of the touch control display 100 of prior art will certainly improve, and its follow-up maintenance cost is not cheap yet.
Summary of the invention
In view of above problem, the object of the present invention is to provide a kind of double modulus letter stencil, be applied in the digiboard with two kinds of operator schemes, particularly to the operator scheme of time writer and finger touch.
The disclosed double modulus letter stencil of the present invention comprises: microprocessor, inductive coil group, electromagnetic induction module and touch-control load module.Electromagnetic induction module optionally is electrically connected at the inductive coil group, the electromagnetic induction signal that electromagnetic induction module produces in order to receive time writer and digiboard.The touch-control load module optionally is electrically connected at the inductive coil group, and the touch-control load module is in order to receive the touch-control input signal of finger on digiboard.Microprocessor is electrically connected at electromagnetic induction module and touch-control load module, and microprocessor optional its from electromagnetic induction module and touch-control load module is connected in the inductive coil group in the lump.
Wherein, microprocessor is when the electromagnetic induction signal that the reception time writer produces, and when microprocessor was connected in the inductive coil group by electromagnetic induction module, the reception electromagnetic induction signal that microprocessor continues was until time writer leaves till the digiboard.If when the user passed through the finger touch digiboard, microprocessor can be connected in the inductive coil group by the touch-control load module, in order to receive the touch-control input signal.Microprocessor is when receiving the touch-control input signal, and microprocessor also can be connected in electromagnetic induction module the inductive coil group, in order to detection have or not time writer near the time electromagnetic induction signal that produces.
The present invention also proposes a kind of detection and changing method of input signal of double modulus letter stencil, may further comprise the steps: carry out the electromagnetic induction pattern by microprocessor, the inductive coil group is connected in electromagnetic induction module, in order to receive electromagnetic induction signal; Finish the reception of electromagnetic induction signal when microprocessor after, microprocessor is carried out the touch-control input pattern; Under the touch-control input pattern, microprocessor sequentially inductive coil is connected in the arbitrary of touch-control load module or electromagnetic induction module, in order to receive touch-control input signal or electromagnetic induction signal; When under the touch-control input pattern and when receiving electromagnetic induction signal, then microprocessor switches to the electromagnetic induction pattern, until finish till the reception of electromagnetic induction signal, and switch back the touch-control input pattern; After the touch-control input pattern is finished reception touch-control input signal, then carry out the electromagnetic induction pattern.
Double modulus letter stencil proposed by the invention can receive the input signal of time writer and finger simultaneously by single inductive coil group, use the element and the manufacturing cost that reduce the required setting of two kinds of different input modes.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the configuration diagram of the double modulus letter stencil of prior art;
Fig. 2 A is configuration diagram of the present invention;
Fig. 2 B is the configuration diagram of first direction signal wire of the present invention and second direction signal wire;
Fig. 2 C is the connection diagram of first direction signal wire of the present invention and first direction signal switching apparatus, first direction signal linkage unit;
Fig. 2 D is that the signal of electromagnetic induction pattern of the present invention receives schematic diagram;
Fig. 2 E is that the signal of touch-control input pattern of the present invention receives schematic diagram;
Fig. 3 A is operation workflow schematic diagram of the present invention;
Fig. 3 B is state conversion schematic diagram of the present invention.
Wherein, Reference numeral
Touch control display 100
Electromagnetic signal receiver module 111
Touch-control sensing module 121
Bimodulus Digitizing plate 200
First direction signal wire 221
Second direction signal wire 222
First direction signal switching apparatus 231
First direction signal linkage unit 232
Second direction signal switching apparatus 233
Second direction signal linkage unit 234
Touch-control load module 240
Finger 252
The first circulation Loop1
The second circulation Loop2
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done concrete description:
Double modulus letter stencil 200 of the present invention is two kinds of operator schemes that are applied in time writer and finger touch.And double modulus letter stencil 200 can be realized by induction modes such as condenser type, resistance-type or optical profile types.Double modulus letter stencil 200 of the present invention also can be applied among the different device (for example: display, mobile phone or personal computer) except can independently operating.For example double modulus letter stencil 200 of the present invention can with the further combination of display unit.Below for convenience of description, therefore only describing with double modulus letter stencil 200 bodies, is not only to be confined among this aspect.Wherein, two kinds of operator schemes are respectively the electromagnetic induction pattern of induced electricity magnetic pen, with the touch-control input pattern that detects finger.
Please refer to shown in Fig. 2 A, it is configuration diagram of the present invention.Double modulus letter stencil 200 of the present invention comprises microprocessor 210, inductive coil group 220, electromagnetic induction module 230 and touch-control load module 240.Microprocessor 210 is electrically connected at electromagnetic induction module 230 and touch-control load module 240.Inductive coil group 220 selectable arbitrary (in Fig. 2 A, being to be represented by dotted lines) that are connected in electromagnetic induction module 230 or touch-control load module 240.
When electromagnetic induction module 230 is connected in inductive coil group 220, the electromagnetic induction signal that inductive coil group 220 produces near double modulus letter stencil 200 in order to receive time writer.Inductive coil group 220 is made of many first direction signal wire 221 and many second direction signal wire 222, please refer to shown in Fig. 2 B.In order to represent selected first direction signal wire 221 and many second direction signal wire 222 in Fig. 2 B with black thick dashed line frame.First direction signal wire 221 is to belong to different layers with second direction signal wire 222.That the viewpoint of overlooking is seen double modulus letter stencil 200 in Fig. 2 B, thus first direction signal wire 221 and second direction signal wire 222 just as the formation as overlapping as shown in latticed.
In the present invention first direction signal wire 221 is referred to the signal wire on the transverse axis (meaning is the X-axis of Fig. 2 B), and the total amount of first direction signal wire 221 is defined as n.In the present invention second direction signal wire 222 is referred to the signal wire on the Z-axis (meaning is the Y-axis of Fig. 2 B), and the total amount of second direction signal wire 222 is defined as n.Electromagnetic induction module 230 also comprises first direction signal switching apparatus 231, first direction signal linkage unit 232, second direction signal switching apparatus 233 and second direction signal linkage unit 234.For knowing that expression first direction signal linkage unit 232 is connected first direction signal wire 221 simultaneously with touch-control load module 240, therefore be to divide other to be connected to first direction signal linkage unit 232 and touch-control load module 240 in the mode of a bus in Fig. 2 B.
The two ends of each first direction signal wire 221 are electrically connected at respectively first direction signal switching apparatus 231 and first direction signal linkage unit 232.The two ends of each second direction signal wire 222 are electrically connected at respectively second direction signal switching apparatus 233 and second direction signal linkage unit 234.The present invention is under the operator scheme of electromagnetic induction or touch-control input, and inductive coil group 220 also has corresponding induction and processes (its operating process will in hereinafter describing in detail).
Below be with first direction signal wire 221 as an illustration, please refer to shown in Fig. 2 C, it is to be the connection diagram of first direction signal wire 221 of the present invention with first direction signal switching apparatus 231, first direction signal linkage unit 232.With adjacent two first direction signal wire Xa, Xa+1 as an illustration in Fig. 2 C.But in fact can from first direction signal wire 221, choose two wantonly according to different algorithms and carry out following processing.For example, microprocessor 210 can be selected two first direction signal wire Xa, Xa+3 in the larger mode in interval, uses the speed that adds short scan.And choosing of second direction signal wire 222 is identical with first direction signal wire 221, so be not repeated in this description.
Brought forward is stated institute and is sayed, an end of first direction signal wire 221 is to be connected in first direction signal switching apparatus 231.And microprocessor 210 is connected to selected first direction signal wire 221Xa the analog-digital converter of first direction signal switching apparatus 231, and another first direction signal wire Xa+1 then is connected in the earth point of first direction signal switching apparatus 231.The other end of first direction signal wire 221 then is to be connected in first direction signal linkage unit 232.In like manner, the two ends with two second direction signal wire Yb, Yb+1 also are connected to second direction signal switching apparatus 233 and second direction signal linkage unit 234.
When double modulus letter stencil 200 during in the electromagnetic induction pattern, the selections of carrying out above-mentioned first direction signal wire 221 that microprocessor 210 can be sequentially, and drive first direction signal linkage unit 232 selected two first direction signal wires 221 are carried out short circuit.Microprocessor 210 also can carry out aforesaid selection to second direction signal wire 222, and driving second direction signal linkage unit 234 carries out short circuit with selected two second direction signal wires 222.Whenever just can having judged whether according to the short-circuit conditions of each position time writer 251, microprocessor 210 run-downs approach.Please refer to shown in Fig. 2 D, it is the signal reception schematic diagram for electromagnetic induction pattern of the present invention.
When double modulus letter stencil 200 during at the touch-control input pattern, microprocessor 210 can drive touch-control load modules 240 carry out the reception of touch-control input signal.Microprocessor 210 can disconnect inductive coil group 220 and being connected of electromagnetic induction module 230, and can be connected to inductive coil group 220 in this while touch-control load module 240.Under the touch-control input pattern, 220 of inductive coil groups are to press capacitance that digiboard produces according to finger 252 to change basis for estimation as finger 252 positions.Because the set-up mode of first direction signal wire 221 and second direction signal wire 222 is as reticulate texture (please refer to Fig. 2 B), therefore when pressing double modulus letter stencil 200, will change the distance between first direction signal wire 221 and the second direction signal wire 222, and then so that the capacitance of this position change to some extent.Touch-control load module 240 can obtain pointing 252 positions that are positioned on the digiboard according to the capacitance that changes, and please refer to shown in Fig. 2 E.In Fig. 2 E be with heavy black line as the touch-control input signal that is sent on this position, and the second direction signal wire on Fig. 2 E left side is that mode by bus is connected to touch-control load module 240 for convenience of description.
Please also refer to shown in Fig. 3 A and Fig. 3 B, it is to be operation workflow schematic diagram of the present invention and state conversion schematic diagram.Input of the present invention and changing method may further comprise the steps:
Step S310: microprocessor is connected in electromagnetic induction module with inductive coil, in order to receive electromagnetic induction signal;
Step S320: finish the reception of electromagnetic induction signal when microprocessor after, microprocessor is carried out the touch-control input pattern;
Step S330: under the touch-control input pattern, microprocessor sequentially inductive coil is connected in the arbitrary of touch-control load module or electromagnetic induction module, in order to receive touch-control input signal or electromagnetic induction signal;
Step S340: when under the touch-control input pattern and when receiving electromagnetic induction signal, then microprocessor switches to the electromagnetic induction pattern, until finish till the reception of electromagnetic induction signal, and switch back the touch-control input pattern; And
Step S350: after the touch-control input pattern is finished reception touch-control input signal, then carry out the electromagnetic induction pattern.
Double modulus letter stencil of the present invention 200 is changeable in electromagnetic induction pattern and touch-control input pattern, and digiboard has corresponding signal reception ﹠ disposal under different mode.At first, when double modulus letter stencil 200 came into operation, double modulus letter stencil 200 can drive electromagnetic induction module 230 and be connected in inductive coil group 220 and carry out electromagnetic induction pattern (corresponding step S310).When double modulus letter stencil 200 enters the electromagnetic induction pattern, the electromagnetic induction signal when microprocessor 210 can move with electromagnetic induction module 230 reception time writers 251 by inductive coil group 220.
When microprocessor 210 execution electromagnetic induction patterns, the detection that microprocessor 210 can continue in the mode of the first circulation Loop1 have or not the electromagnetic induction signal input.When if microprocessor 210 has detected the electromagnetic induction signal input in during the first circulation Loop1, counting the first circulation Loop1 that microprocessor 210 can be again also detect and have or not the electromagnetic induction signal input.In other words, microprocessor 210 is when detecting new electromagnetic induction signal, and microprocessor 210 will accent begin timing, and detects in the first new circulation Loop1 whether electromagnetic induction signal is arranged.Shown in Fig. 3 B, microprocessor 210 receives electromagnetic induction signal in the first circulation Loop1, the electromagnetic induction pattern that maintains that then can continue.If microprocessor 210 has not detected the electromagnetic induction signal input in during the first circulation Loop1, then microprocessor 210 can withdraw from the electromagnetic induction pattern, and carries out touch-control input pattern (corresponding step S320).And the time span of the first circulation Loop1 can determine according to the area of double modulus letter stencil 200 or the quantity of signal wire.
Under the touch-control input pattern, microprocessor 210 sequentially inductive coil is connected in the arbitrary of touch-control load module 240 or electromagnetic induction module 230.Microprocessor 210 with the second circulation Loop2 during in detect and to have or not touch-control input signal or electromagnetic induction signal.Double modulus letter stencil 200 of the present invention can be connected in inductive coil group 220 with touch-control load module 240 first when the touch-control input pattern.Microprocessor 210 then switches to electromagnetic induction module 230 with inductive coil group 220.In other words, microprocessor 210 can sequentially be connected in inductive coil group 220 with touch-control load module 240 and electromagnetic induction module 230 in the second circulation Loop2.During the second circulation Loop2, if touch-control load module 240 is connected in inductive coil group 220,210 of microprocessors pass through touch-control load module 240 and receive the touch-control input signals.If electromagnetic induction module 230 is connected in inductive coil group 220,210 of microprocessors pass through electromagnetic induction module 230 and receive electromagnetic induction signals (corresponding step S330).And the time span of the second circulation Loop2 can determine according to the area of double modulus letter stencil 200 or the quantity of signal wire.
If receive electromagnetic induction signal during the second circulation Loop2, then microprocessor 210 can continue to detect whether also have electromagnetic induction signal in the mode of the first circulation Loop1.If microprocessor 210 still receives new electromagnetic induction signal when the first circulation Loop1, then microprocessor 210 can continue to detect whether also have electromagnetic induction signal in the mode of the first circulation Loop1.If surpass the first circulation Loop1 and do not receive new electromagnetic induction signal, then 210 of microprocessors reenter the electromagnetic induction pattern, please refer to shown in Fig. 3 B.When the user when pointing 252 touch-control, if simultaneously with time writer 251 during near double modulus letter stencil 200, double modulus letter stencil 200 can the preferential electromagnetic induction signal that receives time writer 251.Thus, hand is to the Position disturbance of time writer 251 when using time writer 251 can to reduce double modulus letter stencil 200, and this anti-tampering mechanism is called as anti-palm false touch (Palm rejection).
Except above-mentioned function mode, the present invention can have following variation aspect in the second circulation Loop2.If receive electromagnetic induction signal during the second circulation Loop2, then microprocessor 210 can continue to detect whether also have electromagnetic induction signal in the mode of the first circulation Loop1.Microprocessor 210 is when switching to the first circulation Loop1, and microprocessor 210 also can record the excess time of the second circulation Loop2.If microprocessor 210 does not receive new electromagnetic induction signal after through the first circulation Loop1, then microprocessor 210 will return the subsequent treatment of the second circulation Loop2, continues to detect the touch-control input signal.Different from aforementioned enforcement aspect is that microprocessor 120 can be got back to the uncompleted state of the second circulation Loop2 and continue and carry out in this enforcement aspect after executing the first circulation Loop1.
Double modulus letter stencil 200 proposed by the invention can receive time writer 251 and the input signal of pointing 252 simultaneously by single inductive coil group 220, uses the element, manufacturing cost and the maintenance cost that reduce the required setting of two kinds of different input modes.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (8)
1. a double modulus letter stencil is characterized in that, comprising:
One inductive coil group;
One electromagnetic induction module can optionally be electrically connected at this inductive coil group, and this electromagnetic induction module is in order to receive an electromagnetic induction signal;
One touch-control load module can optionally be electrically connected at this inductive coil group, and this touch-control load module is in order to receive a touch-control input signal; And
One microprocessor is electrically connected at this electromagnetic induction module and this touch-control load module, and this microprocessor is optional one from this electromagnetic induction module and this touch-control load module, and is connected in this inductive coil group;
Wherein, this microprocessor is when the electromagnetic induction pattern of execution, this microprocessor is connected in this inductive coil group with this electromagnetic induction module, when this microprocessor receives this electromagnetic induction signal in during this electromagnetic induction pattern, then this microprocessor continues this electromagnetic induction pattern of execution and detects to have or not this electromagnetic induction signal, if without this electromagnetic induction signal input, then this microprocessor stops to carry out this electromagnetic induction pattern and carries out a touch-control input pattern; And
This microprocessor is when carrying out this touch-control input pattern, this microprocessor sequentially this inductive coil group is connected in the arbitrary of this touch-control load module or this electromagnetic induction module, in order to receive this touch-control input signal or this electromagnetic induction signal, if this microprocessor during one second circulation in and when receiving this electromagnetic induction signal, then this microprocessor switches to this touch-control input pattern and receives this electromagnetic induction signal, until finish the reception of this electromagnetic induction signal.
2. double modulus letter stencil according to claim 1 is characterized in that, this inductive coil group also comprises at least one first direction signal wire and at least one second direction signal wire.
3. double modulus letter stencil according to claim 2, it is characterized in that, this electromagnetic induction module also comprises a first direction signal switching apparatus and a first direction signal linkage unit (X), the two ends of this first direction signal wire are electrically connected at respectively this first direction signal switching apparatus and this first direction signal linkage unit, this first direction signal linkage unit is selected at least two signal line from those first direction signal wires, and selected signal wire is carried out short circuit process.
4. double modulus letter stencil according to claim 2, it is characterized in that, this electromagnetic induction module also comprises a second direction signal switching apparatus (YY) and a second direction signal linkage unit (Y), the two ends of this second direction signal wire are electrically connected at respectively this second direction signal switching apparatus and this second direction signal linkage unit, this second direction signal linkage unit is selected at least two signal line from those second direction signal wires, and selected signal wire is carried out short circuit process.
5. the detection of the input signal of a double modulus letter stencil and changing method are applied to have in the digiboard of an electromagnetic induction module and a touch-control load module, it is characterized in that, detection and the changing method of this input signal may further comprise the steps:
Carry out an electromagnetic induction pattern by a microprocessor, an inductive coil group is connected in this electromagnetic induction module, in order to receive an electromagnetic induction signal;
Finish the reception of this electromagnetic induction signal when this microprocessor after, this microprocessor is carried out a touch-control input pattern;
Under this touch-control input pattern, this microprocessor sequentially this inductive coil is connected in the arbitrary of this touch-control load module or this electromagnetic induction module, in order to receive a touch-control input signal or this electromagnetic induction signal;
When under this touch-control input pattern and when receiving this electromagnetic induction signal, then this microprocessor switches to this electromagnetic induction pattern, until finish till the reception of this electromagnetic induction signal, and switch back this touch-control input pattern; And
After this touch-control input pattern is finished this touch-control input signal of reception, then carry out this electromagnetic induction pattern.
6. the detection of the input signal of double modulus letter stencil according to claim 5 and changing method is characterized in that, judge when this electromagnetic induction pattern that this microprocessor is finished to receive this electromagnetic induction signal and also comprise:
This microprocessor judges one first the circulation during in whether receive this electromagnetic induction signal; And
When this microprocessor receives this electromagnetic induction signal, then again count this first circulation, until till not receiving this new electromagnetic induction signal after this first circulation of process.
7. the detection of the input signal of double modulus letter stencil according to claim 5 and changing method is characterized in that, judge when this touch-control input pattern that this microprocessor is finished to receive this touch-control input signal and also comprise:
This microprocessor judges one second the circulation during in whether receive this electromagnetic induction signal or this touch-control input signal; And
When this microprocessor receives this electromagnetic induction signal, then this microprocessor loops timing with one first, until till not receiving this new electromagnetic induction signal after through this first circulation.
8. the detection of the input signal of double modulus letter stencil according to claim 5 and changing method is characterized in that, judge when this touch-control input pattern that this microprocessor is finished to receive this touch-control input signal and also comprise:
This microprocessor judges one second the circulation during in whether receive this electromagnetic induction signal or this touch-control input signal;
When this microprocessor receives this electromagnetic induction signal, then this microprocessor is noted down the timing progress of this second circulation, and loops timing with one first, until till not receiving this new electromagnetic induction signal after through this first circulation; And
After this little processing was returned this second circulation from this first circulation, this microprocessor continued to detect whether receive this electromagnetic induction signal or this touch-control input signal according to the timing progress of this second circulation, until finish till this second circulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102994978A CN103019425A (en) | 2011-09-23 | 2011-09-23 | Dual-mode digital board and method for detecting and switching input signal thereof |
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| CN2011102994978A CN103019425A (en) | 2011-09-23 | 2011-09-23 | Dual-mode digital board and method for detecting and switching input signal thereof |
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| US20110018820A1 (en) * | 2007-11-23 | 2011-01-27 | Polymer Vision Limited | Electronic apparatus with improved functionality |
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2011
- 2011-09-23 CN CN2011102994978A patent/CN103019425A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20110018820A1 (en) * | 2007-11-23 | 2011-01-27 | Polymer Vision Limited | Electronic apparatus with improved functionality |
| US20100170726A1 (en) * | 2009-01-06 | 2010-07-08 | Elan Microelectronics Corporation | Electronic stylus, capacitive touchpad module, and apparatus for touch input |
| US20100265189A1 (en) * | 2009-04-20 | 2010-10-21 | Broadcom Corporation | Inductive touch screen with integrated antenna for use in a communication device and methods for use therewith |
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Application publication date: 20130403 |