What do you mean you can't touch it?

The screen can only judge one touch point at a time. If more than two points are touched at the same time, the correct response will not be made, or the response will be confused. The task of multi-touch can be divided into two aspects: one is to collect multi-point signals at the same time, and the other is to judge the meaning of each signal, which is gesture recognition.

Application of multi-touch

If you have used iphone, you will know that multi-touch is a very useful and fun thing: when browsing the web, you often have to enlarge a certain area to see clearly, and it is also very useful when looking at pictures. Of course, without this function, human beings can adapt to and achieve their goals. Just like a mobile phone without touch function, they are still surfing the Internet. Of course, simplicity and comfort are different. This is the same reason that eating meat and vegetables can fill your stomach.

Many people think that multi-touch is limited to zooming in and out. In fact, zooming in and out is just one of the practical application examples of multi-touch. With multi-touch technology, how to apply it can be infinitely expanded through infinite imagination. Programmers can apply multi-touch to many aspects and change or innovate more operation methods to some extent. The typical application is that playing the piano on hard glass becomes a reality. If you turn the screen of your mobile phone into a keyboard, it's still very interesting to coax a little girl. Another typical example is the PS simulator on Apple's mobile phone, which realizes the simultaneous input of direction keys and other buttons through multi-touch technology.

[Edit this paragraph] Multi-touch screen patent

Application number/patent number: 2005800 1 1740.

A touch panel with a transparent sensing medium is used to detect multi-touch or proximity touch occurring at different positions on the touch panel at the same time, and generate a different signal representing the touch position on the touch panel for each touch in the multi-touch.

Date of application: April 26th, 2005.

Open day: April 4, 2007

Date of authorization announcement:

Applicant/patentee: Apple Computer Co., Ltd.

Applicant's address: California, USA

Inventor: Steve hotelling; Joshua a. Streihon; Brian hope

Patent Agency: Patent and Trademark Office of China Council for the Promotion of International Trade.

Authorized Agent: Li Yong

Patent type: invention patent

Classification number G06F3/033