CN106033267B - Touch device and signal processing method thereof - Google Patents
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- CN106033267B CN106033267B CN201510108758.1A CN201510108758A CN106033267B CN 106033267 B CN106033267 B CN 106033267B CN 201510108758 A CN201510108758 A CN 201510108758A CN 106033267 B CN106033267 B CN 106033267B
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Abstract
一种触控装置及其信号处理方法。所述方法包括下列步骤：通过触控面板依序获得多个模拟触控信号；依据比较模拟触控信号之间的差异来决定传输模拟触控信号的至少其中之一以进行模拟数字转换动作。本发明实施例无须对每一笔模拟触控信号皆进行数字化处理，有效降低触控装置所需处理的数据量，从而提升信号处理效率并可达到省电的效果。
A touch device and a signal processing method thereof. The method comprises the following steps: sequentially obtaining a plurality of analog touch signals through a touch panel; and determining to transmit at least one of the analog touch signals to perform analog-to-digital conversion based on the difference between the analog touch signals. The embodiment of the present invention does not need to digitize each analog touch signal, effectively reducing the amount of data that the touch device needs to process, thereby improving signal processing efficiency and achieving power saving.
Description
Technical field
The present invention relates to a kind of signal processing technologies, and in particular to a kind of touch device that can promote treatment effeciency and its
Signal processing method.
Background technique
With the progress of touch technology, touch panel has been widely used for mobile phone, laptop and plate
The screen of the electronic devices such as computer.The feature that touch panel is easy to operate and sensitivity is high, make its be loved by consumers and gradually
As main trend in the market.
In general, touch panel can will sense after sensing user for the touching operation of touch panel
Simulation touching signals be supplied to touch chip, then again by touch chip by simulate touching signals be converted into digital touch controlled signal
Judge whether information changes, learns corresponding action event accordingly.However, conversion process meeting of the above-mentioned simulation to number
Increase the touch chip time required in interpretation information, and will lead to touch device more power consumption.Therefore, how touch-control is promoted
The treatment effeciency of signal, actually those skilled in the art endeavour one of the project of research.
Summary of the invention
In view of this, the present invention provides a kind of touch device and its signal processing method, can determine whether need to be to simulation
Touching signals are parsed, and selectively carry out Analog-digital Converter to simulation touching signals, are able to ascend signal processing effect
Rate simultaneously achievees the effect that power saving.
The present invention proposes a kind of signal processing method of touch device.The method includes sequentially being obtained by touch panel
Multiple simulation touching signals, and touching signals are simulated extremely according to the difference compared between simulation touching signals to determine to transmit
One of them is less to carry out Analog-digital Converter movement.
The present invention separately proposes a kind of touch device.The touch device includes touch panel and processing unit.Processing is single
Member coupling touch panel.Processing unit sequentially obtains multiple simulation touching signals by touch panel, and foundation compares simulation
Difference between touching signals come determine transmission simulation touching signals at least one to carry out Analog-digital Converter movement.
Based on touch device and its signal processing method above-mentioned, that the embodiment of the present invention is proposed, by comparing simulation
Difference between touching signals is to determine whether need to parse simulation touching signals, selectively to simulation touching signals
Carry out Analog-digital Converter.Therefore, the embodiment of the present invention need not all carry out digitized processing to each simulation touching signals, have
Effect reduces the data volume handled needed for touch device, to promotion signal treatment effeciency and can reach the effect of power saving.
Detailed description of the invention
Fig. 1 is the block diagram according to touch device depicted in one embodiment of the invention.
Fig. 2 is the block diagram according to touch device depicted in one embodiment of the invention.
Fig. 3 is the flow chart according to the signal processing method of touch device depicted in one embodiment of the invention.
Fig. 4 is the flow chart according to the signal processing method of touch device depicted in one embodiment of the invention.
Fig. 5 is according to the example for simulating touching signals depicted in one embodiment of the invention.
Fig. 6 is the flow chart according to the signal processing method of touch device depicted in one embodiment of the invention.
Sign flag explanation:
100: touch device；110: touch panel；120: processor；122: analog signal detection unit；124: analysis is single
Member；126: analog digital converting unit；128: report dot element；E1, E2: energy area；I1, I2: signal strength；S1,S2,S3,
S4, S5: simulation touching signals；S310~S320, S410~S440, S610~S650: step.
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate institute's accompanying drawings
It is described in detail below.
The touch device and its signal processing method that the embodiment of the present invention is proposed are by receiving simulation touching signals
When just compare simulation touching signals between difference, with judge this simulation touching signals whether need to carry out readout.Therefore,
Digitized processing selectively can be carried out to simulation touching signals, the data volume handled needed for touch device can be reduced, thus
Realize the effect of promotion and the power saving of signal processing efficiency.
Fig. 1 is the block diagram according to touch device depicted in one embodiment of the invention.Fig. 1 is please referred to, the present embodiment
Touch device 100 is the electronic device with calculation function, e.g. desktop computer, laptop, tablet computer or intelligence
Mobile phone etc. is not intended to limit its range herein.Touch device 100 includes touch panel 110 and processor 120, and function division is such as
Under.
Touch panel 110 is, for example, by liquid crystal display (Liquid Crystal Display, LCD), light emitting diode
(Light-Emitting Diode, LED) display, Field Emission Display (Field Emission Display, FED) or its
The display of his type is composed with touch panels such as resistance-type, condenser type, optical profile type, ultrasonic types, can be provided simultaneously
Display and touch control operation function.In the present embodiment, touch panel can receive the touch action of user accordingly to generate mould
Quasi- touching signals.
Processor 120 is, for example, central processing unit (Central Processing Unit, CPU) or other are programmable
General service or specific use microprocessor (Microprocessor), digital signal processor (Digital Signal
Processor, DSP), editable controller, specific integrated circuit (Application Specific Integrated
Circuits, ASIC), programmable logic device (Programmable Logic Device, PLD) or other similar device or
The combination of these devices.
Fig. 2 is to depict processor in Fig. 1 according to the block diagram of touch device depicted in one embodiment of the invention
120 detailed architecture.In the present embodiment, processor 120 may include analog signal detection unit 122, analytical unit 124, mould
Quasi- digital conversion unit 126 and report dot element 128, may respectively be the independent core being composed of one or several logic gates
Piece, to be executed by processor 120 and be realized the overall operation for the signal processing method that the embodiment of the present invention is proposed.Another party
Face, above-mentioned each unit are also possible to the individual chips coupled respectively with processor 120.Alternatively, can also be by programming language
The program code write, and these program code storages are in a storage unit, device 120 for processing execute.It is described to deposit
Storage unit be, for example, any pattern fixed or packaged type random access memory (Random Access Memory,
RAM), read-only memory (Read-Only Memory, ROM), flash memory (Flash Memory), hard disk or other similar device or
The combination of these devices.
Analog signal detection unit 122, analytical unit 124, analog digital converting unit 126 and report dot element 128
Function is summarized as follows respectively.
Analog signal detection unit 122 can be used to detect the inductive signal of analog form provided by touch panel 110, and
Inductive signal can be detected sequentially to obtain multiple simulation touching signals.Analytical unit 124 can be used to compare simulation touch-control
Difference (its details please refers to aftermentioned) between signal, and the simulation touching signals for needing to carry out Analog-digital Converter movement are passed
Transport to analog digital converting unit 126.
Analog digital converting unit 126 can receive the simulation touching signals of the transmission of analytical unit 124, and convert thereof into number
Word touching signals are to be transmitted to report dot element 128.Digital touch controlled signal can then be stored to buffer as report dot element 128,
And it can notify to touch information present in operating system buffer.
Fig. 3 be according to the flow chart of the signal processing method of touch device depicted in one embodiment of the invention, and be applicable in
In the touch device 100 of Fig. 1.Each element shown in FIG. 1 is arranged in pairs or groups to illustrate the detailed step of this method below.
In step s310, processor 120 sequentially obtains multiple simulation touching signals by touch panel 110.It is specific and
Speech, the touching that touch panel 110 can incude user is operated to generate the inductive signal of analog form, and is held by processor 120
Row analog signal detection unit 122 sequentially obtains multiple simulation touchings periodically to detect to these inductive signals accordingly
Control signal.Wherein, processor 120 is believed such as can get the corresponding energy size of simulation touching signals institute, energy area
Breath.
It should be noted that above-mentioned energy size be, for example, simulate touching signals signal strength, source for example including
Stylus, the finger of user or noise etc..In addition, energy area is then, for example, to correspond to touching operation in touch panel
Contact area on 110.
In step s 320, processor 120 determines transmission simulation touching according to the difference compared between simulation touching signals
At least one of control signal is to carry out Analog-digital Converter movement.Specifically, analytical unit can be performed in processor 120
124 to judge whether simulation touching signals obtained change.Processor 120 be, for example, by two simulation touching signals into
Both row compares, and when the difference between the two simulation touching signals is less than a preset critical, and processor 120 can determine that
Corresponding is the same touch event, and only needs one of simulation touching signals being transmitted to analog digital converting unit
126 carry out Analog-digital Converter movement, and need not repeatedly handle the simulation touching signals of same touch event.It is special
It is not, when multiple simulation touching signals that decision processor 120 sequentially obtains are all same touch event, processor 120
A simulation touching signals can also be transmitted only to carry out Analog-digital Converter.Therefore, the present embodiment can effectively shorten simulation numeral
Time needed for switching motion, to promote the signal processing efficiency of touch device 100.
Below for an embodiment to be described in detail.Fig. 4 is the letter according to touch device depicted in one embodiment of the invention
The flow chart of number processing method, and it is suitable for the touch device 100 of Fig. 1.Each element shown in FIG. 1 is arranged in pairs or groups to illustrate below
The detailed step of this method.
In step S410, processor 120 sequentially obtains multiple simulation touching signals by touch panel 110.This step
It is similar with the step S310 in Fig. 3 embodiment, thus its details please refer to it is aforementioned.
In the step s 420, processor 120 can determine whether the first simulation touching signals and second in simulation touching signals
Whether the difference between simulation touching signals is less than preset critical.Wherein, processor 120 e.g. sequentially obtains the first simulation
Touching signals and the second simulation touching signals, but the present embodiment does not limit this.In addition, preset critical can be used to judge mould
Whether change between quasi- touching signals.
Specifically, when the difference between the first simulation touching signals and the second simulation touching signals is less than preset threshold
When value, in step S430, one of first simulation touching signals of the transmission of processor 120 and the second simulation touching signals
To carry out Analog-digital Converter movement.In other words, the first simulation touching signals and the second simulation touching signals quilt at this time
It is determined as same touch event, therefore processor 120 can transmit one of them only with the Analog-digital Converter movement after carrying out.
On the other hand, when the difference is not less than preset critical, then S440 is entered step, the transmission of processor 120 the
One simulation touching signals and the second simulation touching signals are to carry out Analog-digital Converter movement.At this point, processor 120 determines the
One simulation touching signals and the second simulation touching signals are different touch events, therefore the two all needs to carry out Analog-digital Converter
Movement is to carry out subsequent signal processing.
It further says, above-mentioned preset critical can correspond to energy size and energy included by simulation touching signals
The parameters such as region are measured to be set.Therefore, in one embodiment, if preset critical includes for set by energy size
One critical strength, and include for an area critical value set by energy area, then processor 120 can be according to comparing
Whether the difference between one simulation touching signals and the signal strength of the second simulation touching signals is less than critical strength, Yi Jiyi
Whether it is less than area critical value according to the difference between the first simulation touching signals and the energy area of the second simulation touching signals, with
This determines one of first and second simulation touching signals of transmission to carry out Analog-digital Converter movement.In other words, when
Difference between one simulation touching signals and the signal strength of the second simulation touching signals is less than critical strength, and the first simulation
When difference between touching signals and the energy area of the second simulation touching signals is less than area critical value, processor 120 can be sentenced
First and second fixed simulation touching signals are same touch event, and can only select first and second simulation touching signals wherein
One of to be transmitted to analog digital converting unit 126 to carry out Analog-digital Converter movement.
Based on above-mentioned, the present embodiment can judge to simulate the difference between touching signals by the setting of preset critical,
In acquisition simulation touching signals to judge whether that simulation touching signals need to be parsed, and optionally to partial simulation
Touching signals carry out Analog-digital Converter movement, thus promotion signal treatment effeciency.
Fig. 5 is according to the example for simulating touching signals depicted in one embodiment of the invention, and it shows processor 120
With periodic scan according to time simulation touching signals S1, S2, S3, S4, S5 obtained.It is to simulate touching signals S1, S2
Example, processor 120 may compare the difference between signal strength I1, I2 of simulation touching signals S1, S2, and comparable simulation touch-control
Difference between energy area E1, E2 of signal S1, S2.In this embodiment, processor 120 is, for example, to determine signal strength
Difference between I1, I2 is greater than critical strength, therefore determines simulation touching signals S1, S2 touch event different for correspondence.Value
It obtains one to be mentioned that, the difference between above-mentioned relatively simulation touching signals S1, S2 can also be considered as comparing simulation touching signals
Difference between the waveform of S1, S2.
In addition, in one embodiment, processor 120 can also carry out analytical unit 124 further to simulation touch-control letter
Number noise is filtered out, enables and obtain more accurate result when comparing the difference between simulation touching signals.Below with Fig. 6
Embodiment be illustrated.
Fig. 6 is the flow chart according to the signal processing method of touch device depicted in one embodiment of the invention.It please refers to
Fig. 6, in step S610, processor 120 sequentially obtains multiple simulation touching signals by touch panel 110.This step and Fig. 4
Step S410 in embodiment is similar, thus its details please refer to it is aforementioned.
In step S620, processor 120 judges that first simulates touching signals as useful signal, and judges the second simulation touching
Control signal is useful signal.Specifically, in one embodiment, whether processing unit 120 can simulate touching signals according to first
Greater than a noise critical value using judge the first simulation touching signals as useful signal, and can according to second simulation touching signals whether
Greater than noise critical value, to judge the second simulation touching signals as useful signal.In other words, noise critical value can be used to judge
Simulate touching signals signal strength whether be more than ambient noise signal strength.
Later, in step S630, processor 120 can determine whether the first simulation touching signals and the second simulation touching signals
Between difference whether be less than preset critical.Also, when between the first simulation touching signals and the second simulation touching signals
Difference be less than preset critical when, in step S640, processor 120 transmission first simulation touching signals and second simulation
One of touching signals to carry out Analog-digital Converter movement, and, when the difference be not less than preset critical when, into
Enter step S650, first simulation touching signals of the transmission of processor 120 and the second simulation touching signals turn to carry out simulation numeral
Move work.Step S630, S640, S650 of the present embodiment are similar with step S420, S430, S440 of Fig. 4 embodiment respectively, therefore
Details are not described herein for its details.
In conclusion touch device and its signal processing method that the embodiment of the present invention is proposed, may compare simulation touching
Difference between control signal is to judge whether this simulation touching signals needs to carry out readout, to selectively touch to simulation
It controls signal and carries out Analog-digital Converter.Therefore, the embodiment of the present invention need not all carry out simulation number to each simulation touching signals
The data volume handled needed for touch device is effectively reduced in word switching motion, to promotion signal treatment effeciency and can reach power saving
Effect.
Although the present invention has been disclosed by way of example above, it is not intended to limit the present invention., any technical field
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when can make some changes and embellishment, thus it is of the invention
Protection scope when view those as defined in claim subject to.
Claims (8)
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| CN201510108758.1A CN106033267B (en) | 2015-03-12 | 2015-03-12 | Touch device and signal processing method thereof |
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| CN106033267B true CN106033267B (en) | 2019-02-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7525050B1 (en) * | 2004-04-23 | 2009-04-28 | Luidia, Inc. | Interference removal in pointing device locating systems |
| CN101667078A (en) * | 2008-09-01 | 2010-03-10 | 联发科技股份有限公司 | Method and device for detecting user touch on touch panel |
| CN101770320A (en) * | 2010-01-28 | 2010-07-07 | 旭曜科技股份有限公司 | Method and system for differential detection capacitive touch control |
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- 2015-03-12 CN CN201510108758.1A patent/CN106033267B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7525050B1 (en) * | 2004-04-23 | 2009-04-28 | Luidia, Inc. | Interference removal in pointing device locating systems |
| CN101667078A (en) * | 2008-09-01 | 2010-03-10 | 联发科技股份有限公司 | Method and device for detecting user touch on touch panel |
| CN101770320A (en) * | 2010-01-28 | 2010-07-07 | 旭曜科技股份有限公司 | Method and system for differential detection capacitive touch control |
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