Signal transmitting method, signal parsing method, active pen and touch screen

Abstract

The present invention relates to the technical field of electronic information. Disclosed are a signal transmitting method, a signal parsing method, an active pen and a touch screen. In the present invention, the signal transmitting method comprises: the active pen performing frequency modulation on information to be delivered to generate a frequency-modulated signal of the information to be delivered; and the active pen transmitting the frequency-modulated signal of the information to be delivered. Also provided are a signal parsing method, an active pen and a touch screen. The signal transmitting method, the signal parsing method, the active pen and the touch screen provided in the present invention greatly improve the refresh rate and solve the problem that the timing sequence of signaltransmission of the active pen and screen terminal detection is complex, and information delivery is time-consuming.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a signal transmitting method, a signal analysis method, an active pen and a touch pen. Background technique [0002] Existing active pens generally have a pressure detection function. The pressure sensor on the tip of the pen senses the pressure, and then transmits the pressure information to the screen in a certain way. There are many ways to transmit pressure information, such as directly transmitting the pressure information to the whole machine through Bluetooth, such as the apple pencil; there is also a certain modulation of the pressure information through the pen tip and then receiving it through the screen, such as the active pen of the surface pro 4. For the reception method that the pen tip signal modulates the pressure and transmits it to the screen, it not only needs to transmit the pressure information to the screen, but also needs to send another sign...

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Problems solved by technology

[0004] However, in the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: the refresh rate barely reaches 200Hz when the common active pen coding sequence only supports pen detection. If it is detected at the same time, the refresh rate will be greatly reduced

For the receiving method of pen tip signal modulation pressure transmission to the screen terminal, generally speaking, the pen tip signal and the screen terminal signal are different, such processing will cause the circuit and timing of the pen terminal to be more complicated, and the timing of the pen tip signal and the signal acquisition of the screen terminal are required. The timing is better synchronized, otherwise the signal will be lost, and the conversion of these two signals will lead to a waste of time, and the refresh rate is difficult to improve

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