CN111078060A - Infrared touch frame jump scanning method, circuit, touch frame and electronic equipment - Google Patents
Infrared touch frame jump scanning method, circuit, touch frame and electronic equipment Download PDFInfo
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- CN111078060A CN111078060A CN202010077665.8A CN202010077665A CN111078060A CN 111078060 A CN111078060 A CN 111078060A CN 202010077665 A CN202010077665 A CN 202010077665A CN 111078060 A CN111078060 A CN 111078060A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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Abstract
The invention relates to an infrared touch technology, and particularly discloses a jump scanning method of an infrared touch frame, a circuit, the touch frame and electronic equipment, wherein the method comprises the steps that a controller controls a transmitter of the infrared touch frame to sequentially send infrared signals to corresponding receivers with the same number in each group for scanning; the controller determines coordinates of the occlusion region. The jump scanning method of the infrared touch frame can scan with high precision and fast speed, shorten the scanning time and has fast effect.
Description
Technical Field
The invention relates to an infrared touch technology, in particular to an infrared touch frame jump scanning method, an infrared touch frame jump scanning circuit, a touch frame and electronic equipment.
Background
Nowadays, touch screen technology is widely applied, and scanning methods related to touch screens are more and more important, and the scanning speed of the touch screen greatly influences the identification precision of touch points on the touch screen.
Generally, an infrared transmitting tube and an infrared receiving tube are closely arranged on a frame of the infrared pair tube touch screen, and a touch point is identified by scanning whether a shelter exists in the infrared pair tube. The existing scanning method mainly comprises global scanning and regional scanning, wherein the global scanning is full lamp tube scanning, and in each scanning period, all pairs of lamp tubes are scanned by at least one scanning angle, wherein the scanning process of one-time touch point identification is completed and is called as one scanning period; the transceiving of a pair of infrared tubes is called as the scanning of the pair of infrared tubes; if there are multiple pairs of infrared tubes, it is said that there are multiple scan angles.
However, in the traditional scanning method, in a touch screen with a large number of infrared geminate transistors, especially a large-size touch screen, the scanning time is too long, the more the lamp tubes are, the more the angle is, the longer the response time is, but the higher the recognition precision is, and the cost is also greatly improved. If the response time is required to be fast, the accuracy can only be degraded.
Disclosure of Invention
The invention aims to provide an infrared touch frame jump scanning method, a circuit, a touch frame and electronic equipment, and solves the problems of long scanning time, low precision, complex calculation and the like of the existing scanning method.
The invention provides a jump scanning method of an infrared touch frame, which comprises the steps that a controller controls a transmitter of the infrared touch frame to sequentially send infrared signals to corresponding receivers with the same number in each group for scanning; the controller determines coordinates of the occlusion region.
As a preferred scheme, the step of controlling the transmitter of the infrared touch frame to sequentially send the infrared signals to the receivers with the same number in each corresponding group by the controller for scanning includes:
dividing the receiver of the long edge of the infrared touch frame into K according to the sequence from left to right1A large group, each large group is divided into N according to the sequence from left to right1A plurality of groups, each group having M1The receivers in each group of receivers are numbered in sequence from left to right; said K1、N1、M1Are all positive integers;
the controller controls the long edge of the infrared touch frame to sequentially move from left to right along the direction K1Scanning by a large group of receivers; scanning within a large group of receivers includes: to N1Receivers with the same number in the small group of receivers send infrared signals to scan;
dividing receivers of the short sides of the infrared touch frame into K according to the sequence from top to bottom2Big groups, in order from top to bottomDividing each major component into N2A plurality of groups, each group having M2The receivers in each group of receivers are numbered in sequence from left to right; said K2、N2、M2Are all positive integers;
the controller controls the sequence direction K of the short edges of the infrared touch frame from left to right2Scanning by a large group of receivers; scanning within a large group of receivers includes: to N2Receivers with the same number in the small group of receivers send infrared signals for scanning.
As a preferred scheme, if the long edge of the infrared touch frame is K1After the large group, the long edge tail end still has the rest receiver, and then the rest receiver is classified as the Kth receiver1+1 group, wait for K before1After the group is scanned, the K th step is carried out1+1 group scans, said Kth1The +1 set of scans includes: in the order from left to right to K1The receivers in the +1 group send infrared signals to scan;
if the short edge of the infrared touch frame is K2After the large group, the end of the short side still has the rest receiver, and then the rest receiver is classified as the Kth receiver2+1 group, wait for K before2After the group is scanned, the K th step is carried out2+1 group scans, said Kth2The +1 set of scans includes: to the Kth position in the order of top to bottom2The receivers in the +1 group send infrared signals for scanning.
In match with the method, the invention provides an infrared touch frame jump scanning control circuit on the other hand, which comprises an infrared transmitting circuit, a receiving circuit and a controller; the controller executes the jump scanning method of the infrared touch frame.
Preferably, the receiving circuit comprises a signal selector and a receiver arranged and connected in a matrix manner;
wherein the receivers are divided into X rows and Y columns;
the signal selectors are used for selecting M rows from X rows, the number of the signal selectors is the same as that of the rows M, and M is a positive integer not less than 1; if M is equal to X, the control circuit does not need to be provided with a signal selector.
In accordance with the above method, another aspect of the present invention provides an infrared touch frame, comprising the infrared touch frame jump scanning control circuit of the above claims;
wherein the controller comprises:
the control unit is used for controlling the emitters of the infrared touch frames to sequentially send infrared signals to the corresponding receivers for scanning;
the acquisition unit is used for acquiring the serial numbers of the transmitter and the receiver of the shielded area when the control unit scans the shielded area;
and the calculating unit is used for calculating the coordinates of the first shielded area according to the serial numbers of the transmitter and the receiver.
In match with the method, the invention further provides electronic equipment comprising the infrared touch frame.
The invention has the following beneficial effects:
according to the scheme of the invention, the infrared signals sent by the receivers with the same serial numbers in each group are scanned in sequence, so that the effect of jump scanning is achieved, the problem of long traditional scanning time when the touch screen is too large can be avoided, the problem of complex local scanning calculation is also avoided, and the grouped scanning is adopted, so that the effect is fast, and the cost is low.
Drawings
Fig. 1 is a scanning flow chart of an infrared touch frame jump scanning method according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a local optical network distribution of an infrared touch frame jump scanning method according to a preferred embodiment of the present invention;
fig. 3 is a schematic structural diagram of an infrared touch frame according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a method for skip scanning an infrared touch frame, including a controller controlling transmitters of the infrared touch frame to sequentially transmit infrared signals to receivers with the same number in each corresponding group for scanning; the controller determines coordinates of the occlusion region.
The preferred embodiment of the invention scans the infrared signals sent by the receivers with the same serial number in each group in sequence, so that the effect of high-density scanning is achieved, and the problems of long scanning time and high cost in the traditional method when the touch screen is too large can be avoided.
In a preferred embodiment of the present invention, the controlling, by the controller, the transmitter of the infrared touch frame to sequentially transmit the infrared signals to the receivers with the same number in each corresponding group for scanning includes:
dividing the receiver of the long edge of the infrared touch frame into K according to the sequence from left to right1A large group, each large group is divided into N according to the sequence from left to right1A plurality of groups, each group having M1The receivers in each group of receivers are numbered in sequence from left to right; said K1、N1、M1Are all positive integers;
the controller controls the long edge of the infrared touch frame to scan K1 large groups of receivers from left to right; scanning within a large group of receivers includes: to N1Receivers with the same number in the small group of receivers send infrared signals to scan;
dividing receivers of the short sides of the infrared touch frame into K according to the sequence from top to bottom2Each large group is divided into N according to the sequence from top to bottom2A plurality of groups, each group having M2The receivers in each group of receivers are numbered in sequence from left to right; said K2、N2、M2Are all positive integers;
control ofThe controller controls the sequence direction K of the short edges of the infrared touch frame from left to right2Scanning by a large group of receivers; scanning within a large group of receivers includes: to N2Receivers with the same number in the small group of receivers send infrared signals for scanning.
Specifically, when receivers on the long side or the short side are grouped into large groups, the large groups are divided into small groups, infrared signals are sequentially sent to each large group for scanning according to the sequence from left to right, and the receivers with the same number in the small groups in the same large group receive the infrared signals, so that the touch frames which are very long and have a large number of receivers can be divided into several groups for jump scanning, namely, the scanning time is shortened.
In the preferred embodiment of the invention, if the long edge of the infrared touch frame is K1After the large group, the long edge tail end still has the rest receiver, and then the rest receiver is classified as the Kth receiver1+1 group, wait for K before1After the group is scanned, the K th step is carried out1+1 group scans, said Kth1The +1 set of scans includes: in the order from left to right to K1The receivers in the +1 group send infrared signals to scan;
if the short edge of the infrared touch frame is K2After the large group, the end of the short side still has the rest receiver, and then the rest receiver is classified as the Kth receiver2+1 group, wait for K before2After the group is scanned, the K th step is carried out2+1 group scans, said Kth2The +1 set of scans includes: to the Kth position in the order of top to bottom2The receivers in the +1 group send infrared signals for scanning.
Specifically, when the receivers remaining at the ends of the long side or the short side are not sufficiently classified into a large group, the receivers are classified into an independent group, and K is waited for before1After the scanning of the large group is finished, K is carried out1And the +1 group scanning is orderly and fast, and the touch frames with different lengths are met, so that the touch frames are convenient and flexible to group, and the applicability is wide.
Matching with the above method, the preferred embodiment of the present invention provides an infrared touch frame jump scanning control circuit, which comprises an infrared transmitting circuit, a receiving circuit and a controller; wherein, the controller executes the infrared scanning control method.
In a preferred embodiment of the present invention, the receiving circuit includes a signal selector and a receiver arranged in a matrix;
wherein the receivers are divided into X rows and Y columns;
the signal selectors are used for selecting M rows from X rows, the number of the signal selectors is the same as that of the rows M, and M is a positive integer not less than 1; if M is equal to X, the control circuit does not need to be provided with a signal selector.
Referring to fig. 3, in accordance with the above method, a further aspect of the preferred embodiment of the present invention provides an infrared touch frame, including the infrared touch frame jump scanning control circuit of the above claims;
wherein the controller comprises:
the control unit is used for controlling the emitters of the infrared touch frames to sequentially send infrared signals to the corresponding receivers for scanning;
the acquisition unit is used for acquiring the serial numbers of the transmitter and the receiver of the shielded area when the control unit scans the shielded area;
and the calculating unit is used for calculating the coordinates of the first shielded area according to the serial numbers of the transmitter and the receiver.
In accordance with the foregoing method, a further aspect of the preferred embodiments of the present invention provides an electronic device, including the infrared touch frame described above.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (7)
1. A jump scanning method of an infrared touch frame is characterized by comprising the steps that a controller controls a transmitter of the infrared touch frame to sequentially send infrared signals to corresponding receivers with the same number in each group for scanning; the controller determines coordinates of the occlusion region.
2. The method of claim 1, wherein the controller controlling the transmitters of the infrared touch frame to sequentially transmit the infrared signals to the receivers with the same number in each corresponding group for scanning comprises:
dividing the receiver of the long edge of the infrared touch frame into K according to the sequence from left to right1A large group, each large group is divided into N according to the sequence from left to right1A plurality of groups, each group having M1The receivers in each group of receivers are numbered in sequence from left to right; said K1、N1、M1Are all positive integers;
the controller controls the long edge of the infrared touch frame to sequentially move from left to right along the direction K1Scanning by a large group of receivers; scanning within a large group of receivers includes: to N1Receivers with the same number in the small group of receivers send infrared signals to scan;
dividing receivers of the short sides of the infrared touch frame into K according to the sequence from top to bottom2Each large group is divided into N according to the sequence from top to bottom2A plurality of groups, each group having M2The receivers in each group of receivers are numbered in sequence from left to right; said K2、N2、M2Are all positive integers;
the controller controls the sequence direction K of the short edges of the infrared touch frame from left to right2Scanning by a large group of receivers; scanning within a large group of receivers includes: to N2Receivers with the same number in the small group of receivers send infrared signals for scanning.
3. The method of claim 2, wherein the long side of the infrared touch frame is K1After the large group, the long edge tail end still has the rest receiver, and then the rest receiver is classified as the Kth receiver1+1 group, wait for K before1After the group is scanned, the K th step is carried out1+1 group scans, said Kth1The +1 set of scans includes: to K1The receivers in the +1 group send infrared signals to scan;
if the short edge of the infrared touch frame is K2After the large group, the end of the short side still has the rest receiver, and then the rest receiver is classified as the Kth receiver2+1 group, wait for K before2After the group is scanned, the K th step is carried out2+1 group scans, said Kth2The +1 set of scans includes: to the K th2The receivers in the +1 group send infrared signals for scanning.
4. An infrared touch frame jump scanning control circuit is characterized by comprising an infrared transmitting circuit, a receiving circuit and a controller; wherein the controller executes the infrared scanning control method of any one of claims 1 to 3.
5. The infrared touch frame skip scan control circuit of claim 4, wherein the receive circuit comprises a signal selector and a receiver connected in a matrix arrangement;
wherein the receivers are divided into X rows and Y columns;
the signal selectors are used for selecting M rows from X rows, the number of the signal selectors is the same as that of the rows M, and M is a positive integer not less than 1; if M is equal to X, the control circuit does not need to be provided with a signal selector.
6. An infrared touch frame, comprising the infrared touch frame skip scan control circuit of claim 5;
wherein the controller comprises:
the control unit is used for controlling the emitters of the infrared touch frames to sequentially send infrared signals to the corresponding receivers for scanning;
the acquisition unit is used for acquiring the serial numbers of the transmitter and the receiver of the shielded area when the control unit scans the shielded area;
and the calculating unit is used for calculating the coordinates of the first shielded area according to the serial numbers of the transmitter and the receiver.
7. An electronic device characterized by comprising the infrared touch frame of claim 6.
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| CN202010077665.8A CN111078060B (en) | 2020-01-31 | 2020-01-31 | Infrared touch frame jump scanning method, circuit, touch frame and electronic equipment |
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| CN202010077665.8A CN111078060B (en) | 2020-01-31 | 2020-01-31 | Infrared touch frame jump scanning method, circuit, touch frame and electronic equipment |
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Cited By (1)
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| CN114489390A (en) * | 2021-12-31 | 2022-05-13 | 深圳市天英联合教育股份有限公司 | Infrared distribution construction method and device of infrared touch screen and storage medium |
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