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Device for generating local vibration on touch screen and control method

A control method and touch screen technology, applied in the field of tactile feedback, can solve problems such as interaction errors, achieve the effect of improving accuracy and enhancing interactive experience

Pending Publication Date: 2022-05-03
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the interaction between people and smart devices mainly relies on human vision, hearing and voice, and these human-computer interaction methods sometimes lead to interaction errors

Method used

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  • Device for generating local vibration on touch screen and control method
  • Device for generating local vibration on touch screen and control method
  • Device for generating local vibration on touch screen and control method

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Experimental program
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Embodiment Construction

[0050] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0051] A device for generating local vibrations on a touch screen according to the present invention, refer to figure 1 , including: a control module 1 , a drive module 2 , a display module 3 , a tactile feedback module 4 , a rigid frame 5 and a transparent adhesive strip 6 .

[0052] The control module 1 reads the interaction point data of the display module 3 in real time and processes the data, and then sends an instruction to the drive module 2, so that the drive module 2 sends a drive signal to the tactile feedback module 4, so that the tactile feedback module 4 generates local vibration; The frame 5 acts as a fixer to enhance the effect of local vibration; the rigid frame 5 is pasted around the display module 3 through a transparent adhesive strip 6;

[0053] The control module 1 includes a control circuit and a Bluetoo...

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Abstract

The invention discloses a device for generating local vibration on a touch screen and a control method. The device comprises a control module, a driving module, a display module, a tactile feedback module and the like. The control module is used for receiving tactile information generated in the interaction process and calculated by a tactile rendering algorithm, processing the tactile information through an internal signal processing unit and then sending a corresponding control instruction to the driving module. The driving module is composed of an MOSFET driver and used for driving eight piezoelectric ceramic patches, and each piezoelectric ceramic patch corresponds to one driving module. The display module is composed of a capacitive touch screen. The tactile feedback module is composed of eight piezoelectric ceramic patches which are evenly distributed on the periphery of the surface of the touch screen, and the distance between the piezoelectric ceramic patches and the boundary is larger than the wavelength of mechanical waves. The time reversal mirror principle is introduced into the control method, and the interaction experience when multiple fingers make contact with the touch screen at the same time can be enhanced by generating local vibration tactile stimulation at different positions of the touch screen.

Description

technical field [0001] The invention belongs to the technical field of tactile feedback, and in particular relates to a device and a control method for generating local vibrations on a touch screen. Background technique [0002] At present, the interaction between people and smart devices mainly relies on human vision, hearing and voice. These human-computer interaction methods sometimes lead to interaction errors. In addition, tactile perception can also significantly improve the accuracy of human-smart device interaction. In the field of surface tactile display, tactile feedback technology has been widely used in mobile phones, tablet computers, car consoles, etc. Although this technology can enhance people's perception of interactive information, there are still many problems in providing local tactile feedback for fingers touching the touch screen. To further solve this problem, the principle of time-reversal mirror, which can change the propagating state of mechanical...

Claims

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Application Information

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IPC IPC(8): G06F3/01B06B1/06G06F3/044
CPCG06F3/016B06B1/0622G06F3/044
Inventor 陈大鹏朱栋梁刘佳化成城高亚洲韦中宋爱国
Owner NANJING UNIV OF INFORMATION SCI & TECH
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