CN102693050A - Touch screen with function of identifying shape of touch point - Google Patents

Abstract

The invention relates to electronic equipment, and in particular relates to a touch screen. The touch screen with a function of identifying the shape of a touch point comprises a touch screen main body, wherein the touch screen main body comprises a touch panel, a touch detection device and a touch point identification device; the touch point identification device is arranged on one side of the touch panel and comprises a scanning array consisting of ultrasonic probes with ultrasonic vibrators; the ultrasonic probes send and receive ultrasonic and are connected with an ultrasonic transceiver device for controlling generation of the ultrasonic and receiving the ultrasonic; and the ultrasonic transceiver device is connected with a micro processor system. With the adoption of the technical scheme, the touch screen can identify the shape of the touch point or a touch piece and the quality of the touch piece.

Description

Touch-screen with touch point shape recognition function

Technical field

The present invention relates to electronic equipment, relate in particular to a kind of touch-screen.

Background technology

Growing along with multimedia technology, touch-screen applications more and more widely, like the information inquiry in telecommunication bureau, bank, street corner, city, Industry Control, multimedia teaching etc.That touch-screen has is sturdy and durable, reaction velocity fast, save the space, be easy to advantage such as interchange.Utilize this technology, the user needs only the picture and text that bump lightly on the display screen with finger or other touch parts and just can realize operating, thereby makes man-machine interaction more simple and direct, greatly facilitates the user.

Existing touch-screen is generally formed by touching detection part and touch screen controller; Touch detection part and be installed in indicator screen the place ahead, be used to detect user's touch location, after the user uses finger or other to touch part touch display screens; Touch detection part and detect the touch point; Send touch screen controller, convert the touch point to contact coordinate, carry out subsequent operation by touch screen controller.But existing touch-screen has limited the use of touch-screen to touching character and nonrecognition such as part or touch point shape.

Summary of the invention

The object of the present invention is to provide a kind of touch-screen, to solve the problems of the technologies described above with touch point shape recognition function.

The technical matters that the present invention solved can adopt following technical scheme to realize:

Touch-screen with touch point shape recognition function; Comprise a touch-screen main body, said touch-screen main body comprises a touch pad, a touch detecting apparatus, it is characterized in that; Also comprise a touch point recognition device; Said touch point recognition device is arranged on a side of said touch pad, and said touch point recognition device comprises that one is arranged with the scanning array of the ultrasonic probe formation of ultrasonic oscillator, and said ultrasonic probe sends and receive ultrasound wave; Said ultrasonic probe connects a control ultrasound wave generation and receives hyperacoustic ultrasonic receiving device, and said ultrasonic receiving device connects a microprocessor system;

Said microprocessor system controls said ultrasonic receiving device timesharing and takes place and receive ultrasound wave; Said ultrasonic probe sends the ultrasound wave that said ultrasonic receiving device produces to touching part; Said touch part reflection supersonic wave is given said ultrasonic probe; Said ultrasonic receiving device receives the reflected signal that said ultrasonic probe sends, and sends said microprocessor system to, and said microprocessor system is processed into the shape of touch point according to this reflected signal.

The present invention is according to the principle different to the situation of different materials reflection supersonic wave; Make the present invention not only have the advantage of conventional touch screen, also have the shape facility of recognizing touch operation point concurrently, enlarged the usable range of touch-screen; Such as; On the function of conventional touch screen, increase certain shape of identification and touch part, this touches part and can be used as gate inhibition or identification etc.

Said ultrasonic receiving device comprises a transceiver controller; The control input end of said transceiver controller connects said microprocessor system; Said transceiver controller connects one respectively and produces hyperacoustic ultrasonic generator, the hyperacoustic ultrasonic probe, ultrasonic receiver of a reception, and said ultrasonic probe connects the output terminal of said ultrasonic generator and the input end of said ultrasonic probe, ultrasonic receiver respectively.Ultrasonic generator produces ultrasonic signal and gives ultrasonic probe, and ultrasonic probe, ultrasonic receiver is handled the reflected signal that ultrasound wave sends, and transceiver controller is controlled by the microprocessor system, and hyperacoustic generation and reception are controlled in timesharing.Make same ultrasonic probe not only can send ultrasound wave but also can receive ultrasound wave.

Said microprocessor system comprises graphics processing unit, image generation unit and the image storage unit that connects successively, and said graphics processing unit connects said ultrasonic probe, ultrasonic receiver.Graphics processing unit and image generation unit are processed into strong and weak different luminous points with reflected signal, and these luminous points form an image, i.e. the shape of touch point, this image of image storage unit stores.

Said microprocessor system also comprises a wave test unit, and said wave test unit connects said ultrasonic probe, ultrasonic receiver;

Said wave test unit is used for the smoothness of detection waveform; The waveform that the reflected signal that said wave test unit sends ultrasonic probe, ultrasonic receiver forms; The waveform that the ultrasonic signal that sends with said ultrasonic probe forms compares, and draws said smoothness.The soft or hard that touches part is judged according to smoothness in the wave test unit, and waveform is level and smooth more, and the quality that then touches part is soft more.

Ultrasonic oscillator on the said ultrasonic probe can be arranged in row, is arranged on a side of said touch pad.Ultrasonic oscillator on the said ultrasonic probe also can be arranged on the Different Plane, transmission that said ultrasonic probe is three-dimensional and reception ultrasound wave.Three-dimensional transmitting-receiving ultrasound wave can carry out the space three-dimensional location with touching part, and the image that makes the formation of microprocessor system is for touching the shape of part.

Said touch-screen main body can be infrared touch panel.Infrared touch panel and touch point recognition device carry out work separately, mutually noninterfere respectively.

Said touch-screen main body also can be the ultrasonic touch screen; Said microprocessor system also comprises a position processing unit; Said position processing unit connects said ultrasonic probe, ultrasonic receiver; Said position processing unit is confirmed the coordinate of said touch point on touch-screen, and said touch point recognition device is as said touch detecting apparatus.Make ultrasonic touch screen and touch point recognition device use same set of ultrasonic probe, can effectively save cost.

Beneficial effect: owing to adopt technique scheme, the present invention can recognizing touch operation point or the shape of touch part, quality that can also the recognizing touch operation part.

Description of drawings

Fig. 1 is a circuit diagram of the present invention.

Embodiment

For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, further set forth the present invention below in conjunction with concrete diagram.

With reference to Fig. 1, have the touch-screen of touch point shape recognition function, comprise the touch-screen main body; The touch-screen main body comprises touch pad, touch detecting apparatus; Also comprise the touch point recognition device, the touch point recognition device is arranged on a side of touch pad, and the touch point recognition device comprises the scanning array ofultrasonic probe 1 formation that is arranged with ultrasonic oscillator;Ultrasonic probe 1 sends and receives ultrasound wave, and the transmitting terminal ofultrasonic probe 1 is towards the plate face of touch pad.Ultrasonic probe 1 connects a control ultrasound wave generation and receives hyperacoustic ultrasonic receiving device, and ultrasonic receiving device connectsmicroprocessor system 3; The 3 control ultrasonic receiving device timesharing of microprocessor system take place and the reception ultrasound wave;Ultrasonic probe 1 sends the ultrasound wave that ultrasonic receiving device produces to touching part; Touch the part reflection supersonic wave and giveultrasonic probe 1; Ultrasonic receiving device receives the reflected signal thatultrasonic probe 1 sends, and sendsmicroprocessor system 3 to, andmicroprocessor system 3 is processed into the shape of touch point according to this reflected signal.The present invention is according to the principle different to the situation of different materials reflection supersonic wave; Make the present invention not only have the advantage of conventional touch screen, also have the shape facility of recognizing touch operation point concurrently, enlarged the usable range of touch-screen; Such as; On the function of conventional touch screen, increase certain shape of identification and touch part, this touches part and can be used as gate inhibition or identification etc.

Ultrasonic receiving device comprisestransceiver controller 21; The control input end oftransceiver controller 21 connectsmicroprocessor system 3; Transceivercontroller 21 connectsultrasonic generator 22, ultrasonic probe,ultrasonic receiver 23 respectively, andultrasonic probe 1 connects the output terminal ofultrasonic generator 22 and the input end of ultrasonic probe,ultrasonic receiver 23 respectively.Ultrasonic generator 22 produces ultrasonic signal and givesultrasonic probe 1, and ultrasonic probe,ultrasonic receiver 23 is handled the reflected signal that ultrasound wave sends, andtransceiver controller 21 is controlled bymicroprocessor system 3, and hyperacoustic generation and reception are controlled in timesharing.Make sameultrasonic probe 1 not only can send ultrasound wave but also can receive ultrasound wave.

Microprocessor system 3 comprisesgraphics processing unit 31,image generation unit 32 and theimage storage unit 33 that connects successively, andgraphics processing unit 31 connects ultrasonic probe, ultrasonic receiver 23.Graphics processing unit 31 andimage generation unit 32 are processed into strong and weak different luminous points with reflected signal, and these luminous points form an image, i.e. the shape of touch point,image storage unit 33 these images ofstorage.Microprocessor system 3 also compriseswave test unit 34, andwave test unit 34 connects ultrasonic probe,ultrasonic receiver 23;Wave test unit 34 is used for the smoothness of detection waveform, the waveform that the reflected signal thatwave test unit 34 sends ultrasonic probe,ultrasonic receiver 23 forms, and the waveform that the ultrasonic signal that sends withultrasonic probe 1 forms compares, and draws smoothness.The soft or hard that touches part is judged according to smoothness inwave test unit 34, and waveform is level and smooth more, and the quality that then touches part is soft more.Field needing senses touch part soft or hard quality is fashionable; For fear of the wearing and tearing of using harder touch part, minimizing touch-screen;Wave test unit 34 can connect a suggestion device;Wave test unit 34 detects the quality that touches part, and suggestion device judges whether needs prompting user according to the soft or hard of quality.

Ultrasonic oscillator on theultrasonic probe 1 can be arranged in row, is arranged on a side of touch pad.Theultrasonic probe 1 that can traditional B be surpassed is transformed, and is arranged on touch pad one side.It is simple in structure, and is easy for installation.Ultrasonic oscillator on theultrasonic probe 1 can also be arranged on the Different Plane, the transmission ofultrasonic probe 1 three-dimensional and reception ultrasound wave.Can the ultrasonic probe with three-dimensional transmission-receiving function 1 be transformed, be arranged on touch pad one side.The number of ultrasonic oscillator can be decided according to the size of touch pad, guarantees to scan under the situation of whole touch pad area, can save material again.

The touch-screen main body can be infrared touch panel.Infrared touch panel and touch point recognition device carry out work separately, mutually noninterfere respectively.The touch-screen main body also can be the ultrasonic touch screen;Microprocessor system 3 also comprisesposition processing unit 35;Position processing unit 35 connects ultrasonic probe,ultrasonic receiver 23, andposition processing unit 35 is confirmed the coordinate of touch point on touch-screen, and the touch point recognition device is as touch detecting apparatus.Make ultrasonic touch screen and touch point recognition device use same set ofultrasonic probe 1, can effectively save cost.

More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the instructions just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.

Claims (8)

1. the touch-screen that has touch point shape recognition function; Comprise a touch-screen main body, said touch-screen main body comprises a touch pad, a touch detecting apparatus, it is characterized in that; Also comprise a touch point recognition device; Said touch point recognition device is arranged on a side of said touch pad, and said touch point recognition device comprises that one is arranged with the scanning array of the ultrasonic probe formation of ultrasonic oscillator, and said ultrasonic probe sends and receive ultrasound wave; Said ultrasonic probe connects a control ultrasound wave generation and receives hyperacoustic ultrasonic receiving device, and said ultrasonic receiving device connects a microprocessor system;

Said microprocessor system controls said ultrasonic receiving device timesharing and takes place and receive ultrasound wave; Said ultrasonic probe sends the ultrasound wave that said ultrasonic receiving device produces to touching part; Said touch part reflection supersonic wave is given said ultrasonic probe; Said ultrasonic receiving device receives the reflected signal that said ultrasonic probe sends, and sends said microprocessor system to, and said microprocessor system is processed into the shape of touch point according to this reflected signal.

2. the touch-screen with touch point shape recognition function according to claim 1; It is characterized in that; Said ultrasonic receiving device comprises a transceiver controller; The control input end of said transceiver controller connects said microprocessor system; Said transceiver controller connects one respectively and produces hyperacoustic ultrasonic generator, the hyperacoustic ultrasonic probe, ultrasonic receiver of a reception, and said ultrasonic probe connects the output terminal of said ultrasonic generator and the input end of said ultrasonic probe, ultrasonic receiver respectively.

3. the touch-screen with touch point shape recognition function according to claim 2; It is characterized in that; Said microprocessor system comprises graphics processing unit, image generation unit and the image storage unit that connects successively, and said graphics processing unit connects said ultrasonic probe, ultrasonic receiver.

4. according to claim 2 or 3 described touch-screens with touch point shape recognition function, it is characterized in that said microprocessor system also comprises a wave test unit, said wave test unit connects said ultrasonic generator;

Said wave test unit is used for the smoothness of detection waveform; The waveform that the reflected signal that said wave test unit sends ultrasonic probe, ultrasonic receiver forms; The waveform that the ultrasonic signal that sends with ultrasonic probe, ultrasonic receiver forms compares, and draws said smoothness.

5. the touch-screen with touch point shape recognition function according to claim 1 is characterized in that the ultrasonic oscillator on the said ultrasonic probe is arranged in row, is arranged on a side of said touch pad.

6. the touch-screen with touch point shape recognition function according to claim 1 is characterized in that the ultrasonic oscillator on the said ultrasonic probe is arranged on the Different Plane, transmission that said ultrasonic probe is three-dimensional and reception ultrasound wave.

7. the touch-screen with touch point shape recognition function according to claim 1 is characterized in that, said touch-screen main body is an infrared touch panel.

8. the touch-screen with touch point shape recognition function according to claim 1; It is characterized in that; Said touch-screen main body is a ultrasonic touch screen, and said microprocessor system also comprises a position processing unit, and said position processing unit connects said ultrasonic probe, ultrasonic receiver; Said position processing unit is confirmed the coordinate of said touch point on touch-screen, and said touch point recognition device is as said touch detecting apparatus.

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