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Dual-operation-mode optical touch device and operation mode switching method

An operation mode, touch device technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc., can solve problems such as easy connection of pens, inability to write normally, and poor user writing experience.

Inactive Publication Date: 2014-08-06
NANJING WADI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1) It is easy to connect the pen when writing, and the user's writing experience is not good
[0008] 2) When writing, if the screen is partially blocked by some objects (such as hands, sleeves, etc.), it may not be possible to write normally

Method used

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  • Dual-operation-mode optical touch device and operation mode switching method
  • Dual-operation-mode optical touch device and operation mode switching method
  • Dual-operation-mode optical touch device and operation mode switching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] This embodiment uses two infrared image sensors to realize single-point or two-point touch.

[0087] see image 3 In addition to the main control unit 301, two infrared image sensors 302, 303, and the background light source lighting assembly 304, the optical touch device in a preferred embodiment of the present invention also includes an operation mode switch unit 305 and a light source stylus ( image 3 not shown). The main control unit 301 is connected to the infrared image sensors 302 , 303 and the background light emitting component 304 respectively, and the main control unit 301 is also connected to a host computer 306 .

[0088] In practical applications, the two infrared image sensors 302 and 303 can be respectively arranged at any two adjacent corners of the screen, and the corresponding background light source light-emitting components 304 are arranged on the other three sides of the screen frame except the side where the infrared image sensor is located. on...

Embodiment 2

[0109] This embodiment also uses two infrared image sensors to realize single-point or two-point touch.

[0110] see Figure 7 , the optical touch device of the second preferred embodiment of the present invention also includes a main control unit 710, two infrared image sensors 702, 703 and a background light source lighting assembly 704, the main control unit 710 and the two infrared image sensors 702 , 703 are connected to the background light source lighting assembly 704 respectively, and also include a hardware switch 705 and a smart pen holder 706 connected to the main control unit 710 respectively, and a light source stylus ( image 3 not shown).

[0111] In this embodiment, the positions of the two infrared image sensors 702 and 703 and the background light source lighting assembly 704 are the same as those in the first embodiment, and will not be repeated here.

[0112] In this embodiment, the switching of the operation mode can be realized in four ways:

[0113] T...

Embodiment 3

[0140] In practical application, multi-touch can be realized by 3, 4 or more infrared sensors. In this embodiment, multi-touch is realized by 4 infrared image sensors.

[0141] see Figure 10 , the optical touch device of the third preferred embodiment of the present invention also includes a main control unit 110, four infrared image sensors 120, 130, 140, 150 and a background light source lighting assembly 190, the main control unit 110 and four The infrared image sensors 120, 130, 140, 150 are connected to the background light source lighting assembly 190 respectively, and also include a hardware switch 160 and a smart pen holder 170 connected to the main control unit 110, and one or more light source stylus ( image 3 not shown).

[0142] In this embodiment, the switching of the operation mode is the same as that in the second preferred embodiment, and it can also be realized in four ways, which will not be repeated here.

[0143] The four infrared image sensors 120, 130...

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PUM

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Abstract

The invention discloses a dual-operation-mode optical touch device and an operation mode switching method. The dual-operation-mode optical touch device is used for implementing screen touch control and comprises a master control unit, two or more infrared image sensors and a background light source light-emitting unit. The master control unit is connected with both the infrared image sensors and the background light source light-emitting unit. The dual-operation-mode optical touch device further comprises an operation mode switch unit and a light source touch stylus. The operation mode switch unit and the master control unit are used together so that an operation mode of using a shade for touch control and an operation mode of using the light source touch stylus for touch control can be switched. In the operation mode of using the light source touch stylus for touch control, no joined-up writing occurs during screen writing, writing experience is improved, and writing can be normally done when the screen is blocked.

Description

technical field [0001] The invention relates to touch technology, in particular to an optical touch device with dual operation modes and an operation mode switching method. Background technique [0002] At present, there are many kinds of touch devices on the market that can realize large-screen touch. The mainstream touch methods include pressure-sensitive, electromagnetic, ultrasonic, infrared array and optical. Among them, infrared display and optical are two types. Commonly used to support direct touch with fingers. [0003] The working principle of the infrared array touch device is as follows: figure 1 As shown, the infrared emitting tubes and infrared receiving tubes are arranged on the four sides of the screen in one-to-one correspondence to form a horizontal and vertical infrared matrix in front of the screen. When touching an object (such as figure 1 When the finger in the screen) approaches the surface of the screen, the infrared rays at a specific position are ...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/0354
Inventor 丁三川李晓强刘耀诚
Owner NANJING WADI ELECTRONICS TECH
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