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Touch type induction system

A sensing device, touch-type technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., can solve the problems of misoperation, high power consumption, complex structure and circuit, etc., to reduce manufacturing costs, Simple circuit, the effect of improving sensitivity

Inactive Publication Date: 2010-05-05
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned patented technology has been improved in performance, such as fast response speed, high resolution, and simple operation, its structure and circuit are relatively complicated, the production cost is also high, and its power consumption is large, and the accuracy of finger sensing Not prone to misuse

Method used

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  • Touch type induction system
  • Touch type induction system
  • Touch type induction system

Examples

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Embodiment Construction

[0013] see figure 1 , is a circuit diagram of an embodiment of a touch sensing device. The touch sensing device includes a differential signal source 11, two conductors 12, an inductor 13, a signal source 14, a first load circuit 18, a second load circuit 19, a gate circuit 15, a detection device 16 and a signal processing circuit 17. In this embodiment, the first load circuit 18 can be composed of a capacitor C and a first resistor R1, and the second load circuit 19 can be composed of a second resistor R2. The positive and negative poles of the differential signal source 11 are respectively connected to one of the two conductors 12 . The inductor 13 is located between the two conductors 12 and forms two capacitors with the two conductors 12 . The signal source 14 has two output terminals, one of which is connected to the second resistor R2, and the second resistor R2 and the inductor are commonly connected to one input terminal of the gate circuit 15, and the other output ...

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Abstract

This invention provides one trigger sensor device, which comprises one difference signal source to generate two alternating signals with same frequency and different phase; two conductors separately connected to positive and negative ends of difference signal source; one sensor to receive object touch mixture signals between two to form two capacitors; one signal sources with two output ends through two load circuit and amplifier two input ends to form amplifier common mode input through amplifier signals.

Description

【Technical field】 [0001] The invention relates to a touch sensing device, in particular to a sensing device for sensing noise through touch. 【Background technique】 [0002] Various types of sensing devices exist and are used in computer systems and other applications, the most familiar of which is the computer "mouse". Although the mouse is extremely common as a position-pointing device, it has mechanical parts and requires a flat surface on which the position ball can roll, and, in order to have a reasonable resolution, the mouse usually needs to roll a long distance. Finally, the mouse needs The user raises his hand to cause the cursor to move, thereby interfering with the main purpose of people typing from a computer. [0003] Various attempts have been made to provide a means for detecting the position of a thumb or other finger used as a pointing device instead of a mouse, the desirable characteristics of which are low power consumption, high resolution and low cost. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041
Inventor 钟新鸿王汉哲谢冠宏
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD