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Keyboard with real-time touch sensing function

A technology of touch sensing and keyboard, applied in the input/output process of data processing, input/output of user/computer interaction, instruments, etc., which can solve the problem of false detection of touch events, affecting the efficiency of keyboard use, and difficult detection of touch events To achieve the effect of efficiently inputting data and editing operations, reducing the cost of learning and adapting to other problems

Pending Publication Date: 2022-04-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the threshold value is set too far away from the idle value (the value when it is not touched), the touch event may be difficult to detect unless the finger is pressed very hard, which will affect the productivity of using the keyboard
If the threshold value is set too close to the idle value, the touch event may be falsely detected before the user's finger touches the key

Method used

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  • Keyboard with real-time touch sensing function
  • Keyboard with real-time touch sensing function
  • Keyboard with real-time touch sensing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] as Figure 3 、 Figure 2 As shown, the detection device is a capacitive sensing device 2, a key on the keyboard 1 is provided below the surface of the capacitive sensing device, the capacitive sensing device 2 includes a capacitive sensor, when the hand touches the surface of the key 1, the capacitive sensor detects the amount of capacitance change to know the position of the finger touch, the capacitive sensor continuously detects the change in capacitance, and continuously tracks the position information of the touch point.

[0041] Converts the capacitance change of the capacitive sensor through the RC charge-discharge circuit into a change in charge-discharge time. When there is no finger touch, the charge and discharge time of the button is counted as a standard value. After continuous repeated sampling, the collected charge and discharge time is compared with the standard value, if the non-standard sampling time is greater than 0.2 times the standard sampling time (the ...

Embodiment 2

[0050] A keyboard with a real-time touch sensing function, comprising a keyboard, each key on the keyboard is provided with a detection device; the detection device is a capacitive sensing device 2.

[0051] In the present embodiment, the detection device may be an infrared sensing element.

[0052]A small hole is opened for each key on the keyboard, and an infrared sensing element is set below the small hole.

[0053] When the finger stays above a key in the keyboard, the hole is the path of the infrared, and the finger stays on a key, which will block the emission path of the infrared through the hole, and is sensed as the finger touching the key. Key press to trigger the real key operation, do not press the key, is the touch operation, at this time can detect the finger or palm information, through the continuous detection of the distribution of fingers on the keyboard, you can judge some of the operations on the keyboard, such as left slide, right slide, up and down page turn...

Embodiment 3

[0058] A keyboard with real-time touch sensing function, including a keyboard, each key on the keyboard is equipped with a detection device; the detection device is a resistance sensing element.

[0059] The main part of the resistive touch is two conductive layers, and there are many small transparent isolation points between them to separate the two conductive layers. When the finger touches the screen, the two layers of conductive layers have contact at the touch point position, the resistance changes, the signal is generated, and the signal is transmitted to the touch screen controller, which detects this contact and determines the button touched by the finger.

[0060] Fingers touch above a key button on the keyboard, the two layers of conductive layers on the surface of the key knob have contact at the touch point position, the resistance changes, a signal is generated, and then sent to the touch controller, the controller detects the contact signal, and determines the butto...

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PUM

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Abstract

The invention discloses a keyboard with a real-time touch sensing function. The keyboard comprises a keyboard body, and a detection device is arranged in each key on the keyboard body; the detection device is used for detecting and tracking hand information on the keyboard so as to realize real-time hand tracking; the keyboard continuously detects distribution of hands on the keyboard, judges operation of the hands and outputs corresponding instructions. The detection device is arranged on a common keyboard, the position, gesture information and the like of a finger on the keyboard can be comprehensively detected in real time when the finger touches the key buttons, and then the position, the gesture information and the like are transmitted to external equipment through Bluetooth or a data line. The user can also see the finger style of the corresponding key button of the virtual keyboard on the screen of the augmented reality technology scene, and the real-time tracking of the finger behavior track is realized in the process.

Description

Technical field [0001] The present invention belongs to the field of electronic product auxiliary equipment technology, in particular to a keyboard with a real-time touch sensing function. Background [0002] Extended Reality (XR) is actually a general term that encompasses augmented reality (AR), virtual reality (VR), mixed reality (MR), and everything in between. [0003] Augmented Reality (Augmented Reality, abbreviated ar) technology is a new technology that integrates real-world information and virtual world information "seamlessly", which is to put the physical information (visual information, sound, taste, touch, etc.) that is difficult to experience in a certain time and space range of the real world, through computers and other science and technology, simulation and then superposition, the virtual information is applied to the real world, perceived by the human senses, so as to achieve a sensory experience beyond reality. Real environments and virtual objects are superi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/02G06F3/01G06F3/041G06F3/044
CPCG06F3/0202G06F3/044G06F3/0416G06F3/017
Inventor 魏鹏孙倩徐佳琦
Owner SOUTH CHINA UNIV OF TECH