Unlock instant, AI-driven research and patent intelligence for your innovation.

A method, device and system for processing electromagnetic signals

A technology of electromagnetic signal and processing method, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve problems such as increased influence of electromagnetic signals, large overshoot noise, and reduced detection accuracy of electromagnetic pens. To achieve the effect of improving the detection accuracy

Active Publication Date: 2020-12-11
QINGDAO ROBOTPEN DIGITAL TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Further weaken the signal strength, resulting in the loss of signal-to-noise ratio (SIGNAL-NOISE RATIO, SNR)
[0006] 2. The branches are susceptible to crosstalk
[0007] 3. Due to the limited driving capability of the pre-stage op amp, the electromagnetic signal is greatly affected by the auxiliary detection signal, which is prone to large overshoot noise
[0008] Therefore, when the electromagnetic pen is positioned in the prior art, the detection accuracy of the electromagnetic pen is reduced.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method, device and system for processing electromagnetic signals
  • A method, device and system for processing electromagnetic signals
  • A method, device and system for processing electromagnetic signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] figure 1 It is a flow chart of Embodiment 1 of the electromagnetic signal processing method of the present invention, such as figure 1 As shown, the electromagnetic signal processing method of this embodiment may specifically include the following steps:

[0052] 100. Between the first processing period and the N-1th processing period, according to the first cycle of the auxiliary signal, perform integral processing on the target electromagnetic signal and the auxiliary signal to obtain the amplitude value of the target electromagnetic signal.

[0053] In a specific implementation process, when the electromagnetic signal processing method of this embodiment processes the target electromagnetic signal, the processing process can include N processing periods, and the time-sharing principle can be used to set the period according to the auxiliary signal The cycle of the target electromagnetic signal is processed to detect the amplitude value and phase value of the target ...

Embodiment 2

[0067] figure 2 It is a flow chart of Embodiment 2 of the electromagnetic signal processing method of the present invention, such as figure 2 As shown, the electromagnetic signal processing method of this embodiment is in figure 1 On the basis of the illustrated embodiments, the technical solutions of the present invention are further described in more detail.

[0068] Such as figure 2 As shown, the electromagnetic signal processing method of this embodiment may specifically include the following steps:

[0069] 200. Transmitting an electromagnetic signal to the electromagnetic pen.

[0070] 201. Receive the electromagnetic signal emitted by the electromagnetic pen.

[0071] In a specific implementation process, the antenna array can transmit electromagnetic signals to the electromagnetic pen and receive the electromagnetic signals emitted by the electromagnetic pen according to the preset time interval of signal transmission and reception. For example, at a certain mom...

Embodiment 3

[0105] Figure 7 It is a schematic structural diagram of Embodiment 1 of the electromagnetic signal processing device of the present invention, as shown in Figure 7 As shown, the device of this embodiment may include a phase amplitude detection module 10 and a processor 11 , and the phase amplitude detection module 10 is electrically connected to the processor 11 .

[0106] In a specific implementation process, when processing the target electromagnetic signal, the processing process may include N processing periods. Using the time-sharing principle, in the set period, the target electromagnetic signal is processed according to the period of the auxiliary signal, so as to Detect the amplitude value and phase value of the target electromagnetic signal. Wherein, N is an integer greater than 1.

[0107] Specifically, the phase-amplitude detection module 10 is used to perform integral processing on the target electromagnetic signal and the auxiliary signal according to the firs...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electromagnetic signal processing method, device and system. The processing process of a target electromagnetic signal comprises N processing time periods, wherein N is an integer greater than 1. The method comprises the steps that from the first processing time period to the (N-1)(th) processing time period, integration processing is performed on the target electromagnetic signal and an auxiliary signal according to a first cycle of the auxiliary signal, and amplitude values of the target electromagnetic signal are obtained; a signal channel corresponding to the maximum amplitude value is selected to serve as a detection channel of phase values; in the N(th) processing time period, integration processing is performed on the target electromagnetic signal and theauxiliary signal according to a second cycle of the auxiliary signal, and the phase values of the target electromagnetic signal are obtained; and according to a preset incidence relation between theamplitude values and the phase values, the amplitude values and the phase values are analyzed to obtain a phase change value of the target electromagnetic signal. By the adoption of the technical scheme, detection precision of an electromagnetic pen can be improved.

Description

technical field [0001] The present invention relates to the technical field of electromagnetic touch control, in particular to an electromagnetic signal processing method, device and system. Background technique [0002] At present, human-computer interaction devices based on electromagnetic induction technology are widely used. This kind of equipment must work together with an electromagnetic touch pen (referred to as an electromagnetic pen) and an electromagnetic touch panel (referred to as an electromagnetic board). Components with high detection accuracy. [0003] In the prior art, after shunting the electromagnetic signal, the phase angle change and the amplitude value of the electromagnetic signal are detected respectively to determine the pressure value of the electromagnetic pen and the actual position of the electromagnetic pen. [0004] However, since the strength of the received electromagnetic signal is relatively weak and is easily affected by clutter, shunting...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/0354
CPCG06F3/03545
Inventor 魏江力殷述军
Owner QINGDAO ROBOTPEN DIGITAL TECH CO LTD