CN103135874A - Scanning method, scanning device, processor and electronic device for projection type touch screen - Google Patents
Scanning method, scanning device, processor and electronic device for projection type touch screen Download PDFInfo
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- CN103135874A CN103135874A CN2013100252826A CN201310025282A CN103135874A CN 103135874 A CN103135874 A CN 103135874A CN 2013100252826 A CN2013100252826 A CN 2013100252826A CN 201310025282 A CN201310025282 A CN 201310025282A CN 103135874 A CN103135874 A CN 103135874A
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Abstract
An embodiment of the invention discloses a scanning method, a scanning device, a processor and an electronic device for a projection type touch screen. The scanning method includes that at a set touch panel scanning moment, drive signals are transmitted to at least two branches of transmission ends (TXs), and the drive signals are different orthogonal signals. All receiving ends (RXs) receive the signals transmitted by the at least two branches of TXs simultaneously. Each receiving end RX is respectively related with the signals transmitted by all TXs, information carried by each TX is obtained to obtain a scanning result. At least two branches of TX channels are involved in parallel transmission on the transmission side, the drive signals are different orthogonal signals, the signals on the receiving side are related with signals of all receiving branches, signals of each branch of TX are screened by using a principle that relation value among the orthogonal signals is zero, the information carried by each branch of TX is obtained to judge touching positions, and a technical effect of shortening scanning time is achieved.
Description
Technical field
The present invention relates to the mobile communication technology field, more particularly, relate to a kind of scan method towards the projection-type touch-screen, device, processor and electronic equipment.
Background technology
In-cell refers to touch panel function is embedded into technology in liquid crystal pixel, adopts the in-cell technology can realize slimming and the lightweight of panel.
Existing in-cell Technology Need carries out Time share scanning to touch panel and LCD panel, prevents that noise effect touch panel that LCD scanning brings is to the identification of touch signal.As shown in Figure 1, a kind of sweep time of the allocation example in existing in-cell technology, for time of LCD panel scanning be 10ms, for time of touch panel scanning be 6ms.
Yet, raising along with LCD resolution and refresh rate, the time of touch panel scanning is compressed, and the size of touch panel progressively increases needs sweep time of more growing, needs so the screen scanning technology in existing in-cell technology exists the technical need that improves the touch panel sweep velocity badly.
Summary of the invention
In view of this, the invention provides a kind of scan method towards the projection-type touch-screen, device, processor and electronic equipment, to realize improving the technical purpose of touch panel sweep velocity.
On the one hand, the embodiment of the invention discloses:
A kind of scan method towards the projection-type touch-screen comprises:
In the touch panel scanning of setting constantly, send pumping signal to two-way transmitting terminal TX at least, each pumping signal is different orthogonal signal;
All receiving end RX receive the signal that the described TX of two-way at least sends simultaneously;
With each receiving end RX respectively to signal that each TX sends carry out relevant after, obtain the information that each TX carries and obtain scanning result.
Alternatively, sending pumping signal to two-way transmitting terminal TX at least comprises:
Send pumping signal to all transmitting terminal TX.
On the other hand, the embodiment of the invention discloses:
A kind of scanister towards the projection-type touch-screen comprises:
The pumping signal sending module is used in the touch panel scanning of setting constantly, sends pumping signal to two-way transmitting terminal TX at least, and each pumping signal is different orthogonal signal;
Receive control module, be used for controlling all receiving end RX and receive simultaneously the signal that the described TX of two-way at least sends;
The correlation computations module, be used for each receiving end RX respectively to signal that each TX sends carry out relevant after, obtain the information that each TX carries and obtain scanning result.
Another aspect the embodiment of the invention discloses:
A kind of controller towards the projection-type touch-screen comprises: processor and storer, and described processor reads and carries out the instruction in described storer, and the instruction in described storer comprises:
The pumping signal sending module is used in the touch panel scanning of setting constantly, sends pumping signal to two-way transmitting terminal TX at least, and each pumping signal is different orthogonal signal;
Receive control module, be used for controlling all receiving end RX and receive simultaneously the signal that the described TX of two-way at least sends;
The correlation computations module, be used for each receiving end RX respectively to signal that each TX sends carry out relevant after, obtain the information that each TX carries and obtain scanning result.
On the one hand, the embodiment of the invention discloses again:
A kind of electronic equipment towards the projection-type touch-screen comprises:
Above-mentioned controller towards the projection-type touch-screen.
can find out from above-mentioned technical scheme, the embodiment of the present invention is under the scene of projection-type touch-screen, in scanning process for touch panel, participate in the parallel TX passage that sends at transmitter side and be at least two-way, or optional whole TX passage sends simultaneously, pumping signal is chosen for different orthogonal signal, carry out relevant to each road signal of receive the receiver side signal, utilizing correlation between the orthogonality signal is zero principle, filter out the signal of each road TX, and obtain the information judgement that each road TX carries and touch the position that occurs, thereby realized the technique effect that shortens sweep time.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of existing schematic diagram that distributes towards the sweep time of projection-type touch-screen disclosed by the invention;
Fig. 2 is the disclosed a kind of scan method process flow diagram towards the projection-type touch-screen of the embodiment of the present invention;
Fig. 3 is the disclosed a kind of scanister structural representation towards the projection-type touch-screen of the embodiment of the present invention;
Fig. 4 is the disclosed a kind of scanning monitor structural representation towards the projection-type touch-screen of the embodiment of the present invention;
Fig. 5 is the disclosed a kind of electronic equipment towards the projection-type touch-screen of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Before the explanation of carrying out embodiment, it should be explicitly made clear at this point, the embodiment in the present invention can be used for shortening in the technical scheme of sweep time of projecting type capacitor screen, namely can be used for holding mutually type capacitance plate and appearance type capacitance plate certainly.
In conjunction with the content in background technology in this instructions, the embodiment in the present invention is specially adapted to shorten in the in-cell technology for touch panel sweep time, in following embodiment, mainly for the scan method of having used the in-cell technology.
Scan method for touch panel in existing in-cell technology is to scan one by one transmitting terminal TX, and scanning a TX time used is t, and the time of scanning n TX is n*t, that is, sweep time is linear increasing along with the increase of TX number of channels;
When there being a transmitting terminal TX to send signal, the signal that receiving end receives can be expressed as: RX=K*TX, and when there being a plurality of TX to send simultaneously, the signal of receiving end reception can be expressed as:
Be the number of the parallel TX that sends, Ki is the corresponding weight of each TXi in the in-cell technology, but this moment, and it is that position on the corresponding screen of which transmitting terminal TX touches that receiving end can not directly be told.
Thereby, the embodiment of the invention discloses a kind of scan method towards the projection-type touch-screen, device, processor and electronic equipment, scan simultaneously multichannel TX in the situation that have, and can identify the entrained information of each road TX at receiving end, realize improving the technical purpose of touch panel sweep velocity.
Fig. 2 shows a kind of scan method towards the projection-type touch-screen, comprising:
S21: in the touch panel scanning of setting constantly, send pumping signal to two-way transmitting terminal TX at least, each pumping signal is different orthogonal signal;
In the present embodiment, the set of signals that adopts orthogonal signal set to send as TX participates in the parallel TX that sends at transmitter side and concentrates from orthogonal signal and obtain different orthogonal signal and send, and the signal of transmission is transferred to receiver side by Incell/TP.
Send to two-way at least the implementation that TX sends pumping signal, be chosen as to all transmitting terminal TX and send pumping signal, all transmitting terminal TX are parallel to be sent, and its needed sweep time is identical sweep time with a TX, only needs the t time can complete the concurrent TX scanning in n road.
Described orthogonal signal comprise time domain orthogonal signal and frequency domain orthogonal signal, but are not limited to this.
S22: all receiving end RX receive the signal that the described TX of two-way at least sends simultaneously;
S23: with each receiving end RX respectively to signal that each TX sends carry out relevant after;
S24: obtain the information that each TX carries and obtain scanning result.
Send when utilizing orthogonal signal set to complete multichannel TX signal as the transmitted signal collection, detect respectively at receiver side:
Take discrete signal as example,
RXi and TXj are carried out relevant, that is:
Utilize when i ≠ j, because the correlated results that has between the orthogonality signal is zero,
Can judge, correlated results is that zero TX passage is not current scan channel, and when i=j,
Whether as can be known, this passage is current scan channel, touch by obtaining the entrained signal of this passage, judging on this passage.
Need to prove, can make the same derivation of equation for continuous signal, repeat no more herein.
Above example shows:
Satisfy orthogonality relation between each TX transmitted signal, utilize the orthogonality between signal signal to be filtered the signal that obtains each TX, namely namely utilize
Or
I ≠ j utilizes RXi and TXi to carry out associative operation at receiver side, namely
Or
Namely exactly, and be not subjected to detect corresponding TXi signal in the situation of other passage interference, and the information of carrying in Acquisition channel.
Fig. 3 shows towards the scanister of projection-type touch-screen, comprising:
Pumping signal sending module 31 is used in the touch panel scanning of setting constantly, sends pumping signal to two-way transmitting terminal TX at least, and each pumping signal is different orthogonal signal;
Alternatively, the pumping signal sending module can be used for sending pumping signal to all transmitting terminal TX.
Receive control module 32, be used for controlling all receiving end RX and receive simultaneously the signal that the described TX of two-way at least sends;
Said apparatus, for Fig. 2 diagram and embodiment in the corresponding consistent functional module of each step of method, the device that is limited by such functional module is the functional module construction of realizing technical solution of the present invention.Device embodiment described above is only schematic, wherein said unit as the separating component explanation can or can not be also physically to separate, the above-mentioned functions module can be or can not be also physical location, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Those of ordinary skills namely can understand and implement in the situation that do not pay creative work.
Fig. 4 shows a kind of controller towards the projection-type touch-screen, comprising:
The pumping signal sending module is used in the touch panel scanning of setting constantly, sends pumping signal to two-way transmitting terminal TX at least, and each pumping signal is different orthogonal signal;
Receive control module, be used for controlling all receiving end RX and receive simultaneously the signal that the described TX of two-way at least sends;
The correlation computations module, be used for each receiving end RX respectively to signal that each TX sends carry out relevant after, obtain the information that each TX carries and obtain scanning result.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to complete by computer program, described program can be stored in computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Fig. 5 shows a kind of electronic equipment towards the projection-type touch-screen, comprising: the controller in the corresponding embodiment of Fig. 4.
Described electronic equipment is towards the touch-screen mobile phone of projection-type touch-screen, flat board, the notebook computer of integrated panel function, and other electronic equipments of integrated panel function.
Described controller can be for controlling or indicating described electronic equipment to carry out the control chip of touch recognition and LCD demonstration, and this chip comprises processor and on-chip memory.
In sum:
The embodiment of the present invention is under the scene of projection-type touch-screen, in scanning process for touch panel, participate in the parallel TX passage that sends at transmitter side and be at least two-way, or optional whole TX passage sends simultaneously, pumping signal is chosen for different orthogonal signal, carry out relevant to each road signal of receive the receiver side signal, utilizing correlation between the orthogonality signal is zero principle, filter out the signal of each road TX, and obtain the information judgement that each road TX carries and touch the position that occurs, thereby realized the technique effect that shortens sweep time.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, identical similar part is mutually referring to getting final product.
Claims (7)
1. the scan method towards the projection-type touch-screen, is characterized in that, comprising:
In the touch panel scanning of setting constantly, send pumping signal to two-way transmitting terminal TX at least, each pumping signal is different orthogonal signal;
All receiving end RX receive the signal that the described TX of two-way at least sends simultaneously;
With each receiving end RX respectively to signal that each TX sends carry out relevant after, obtain the information that each TX carries and obtain scanning result.
2. the scan method towards the projection-type touch-screen as claimed in claim 1, is characterized in that, sends pumping signal to two-way transmitting terminal TX at least and comprise:
Send pumping signal to all transmitting terminal TX.
3. the scanister towards the projection-type touch-screen, is characterized in that, comprising:
The pumping signal sending module is used in the touch panel scanning of setting constantly, sends pumping signal to two-way transmitting terminal TX at least, and each pumping signal is different orthogonal signal;
Receive control module, be used for controlling all receiving end RX and receive simultaneously the signal that the described TX of two-way at least sends;
The correlation computations module, be used for each receiving end RX respectively to signal that each TX sends carry out relevant after, obtain the information that each TX carries and obtain scanning result.
4. the scanister towards the projection-type touch-screen as claimed in claim 3, is characterized in that, the pumping signal sending module is used for sending pumping signal to two-way transmitting terminal TX at least and comprises:
The pumping signal sending module is used for sending pumping signal to all transmitting terminal TX.
5. the controller towards the projection-type touch-screen, is characterized in that, comprising: processor and storer, and described processor reads and carries out the instruction in described storer, and the instruction in described storer comprises:
The pumping signal sending module is used in the touch panel scanning of setting constantly, sends pumping signal to two-way transmitting terminal TX at least, and each pumping signal is different orthogonal signal;
Receive control module, be used for controlling all receiving end RX and receive simultaneously the signal that the described TX of two-way at least sends;
The correlation computations module, be used for each receiving end RX respectively to signal that each TX sends carry out relevant after, obtain the information that each TX carries and obtain scanning result.
6. the controller towards the projection-type touch-screen as claimed in claim 5, is characterized in that, in the instruction in described storer, the pumping signal sending module is used for sending pumping signal to all transmitting terminal TX.
7. the electronic equipment towards the projection-type touch-screen, is characterized in that, comprising:
The described controller towards the projection-type touch-screen of claim 5-6 any one.
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| CN201310025282.6A CN103135874B (en) | 2013-01-23 | 2013-01-23 | Scan method, device, processor and electronic equipment towards projection-type touch screen |
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| CN201310025282.6A CN103135874B (en) | 2013-01-23 | 2013-01-23 | Scan method, device, processor and electronic equipment towards projection-type touch screen |
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| CN103135874B CN103135874B (en) | 2016-12-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104298383A (en) * | 2013-07-15 | 2015-01-21 | 奇景光电股份有限公司 | Touch system |
| CN109144335A (en) * | 2018-08-29 | 2019-01-04 | 基合半导体（宁波）有限公司 | A kind of touch screen, detection method and mobile terminal |
| CN109697402A (en) * | 2017-10-20 | 2019-04-30 | 华为技术有限公司 | A kind of acquisition methods and fingerprint identification device of finger print information |
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| CN101840293A (en) * | 2010-01-21 | 2010-09-22 | 宸鸿科技(厦门)有限公司 | Scanning method for projected capacitive touch panels |
| CN102177493A (en) * | 2008-08-07 | 2011-09-07 | O·德拉姆 | Optical control systems with modulated emitters |
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2013
- 2013-01-23 CN CN201310025282.6A patent/CN103135874B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102177493A (en) * | 2008-08-07 | 2011-09-07 | O·德拉姆 | Optical control systems with modulated emitters |
| CN101840293A (en) * | 2010-01-21 | 2010-09-22 | 宸鸿科技(厦门)有限公司 | Scanning method for projected capacitive touch panels |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104298383A (en) * | 2013-07-15 | 2015-01-21 | 奇景光电股份有限公司 | Touch system |
| CN104298383B (en) * | 2013-07-15 | 2017-07-28 | 奇景光电股份有限公司 | Touch-control system |
| CN109697402A (en) * | 2017-10-20 | 2019-04-30 | 华为技术有限公司 | A kind of acquisition methods and fingerprint identification device of finger print information |
| US10997394B2 (en) | 2017-10-20 | 2021-05-04 | Huawei Technologies Co., Ltd. | Fingerprint information obtaining method and fingerprint recognition apparatus |
| CN109144335A (en) * | 2018-08-29 | 2019-01-04 | 基合半导体（宁波）有限公司 | A kind of touch screen, detection method and mobile terminal |
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| CN103135874B (en) | 2016-12-28 |
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