Method, device and intelligent terminal for processing signal data

A signal data and processing method technology, applied in the field of signal processing, can solve the problems of poor anti-aliasing processing effect, achieve the effect of improving output effect, reducing noise interference, and increasing sampling frequency

Inactive Publication Date: 2013-03-27
SHENZHEN SKYWORTH QUNXIN SECURITY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a signal data processing method, which aims to solve the problem of poor anti-aliasing processing effect of the existing method

Method used

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  • Method, device and intelligent terminal for processing signal data
  • Method, device and intelligent terminal for processing signal data
  • Method, device and intelligent terminal for processing signal data

Examples

Experimental program
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Embodiment 1

[0030] figure 1 It shows a flow chart of a signal data processing method provided by the first embodiment of the present invention, which is described in detail as follows:

[0031] Step S11 , using the double sampler to synchronously sample the odd and even timing of the signal to obtain the odd sampling sequence and the even sampling sequence, and store the odd sampling value in the odd sampling sequence and the even sampling value in the even sampling sequence in order.

[0032] figure 2 shows the internal architecture diagram of the double sampler hardware, in figure 2 In the method, the timing control sampler's time-sharing synchronization function is adopted, that is, the odd and even timing of the signal is sampled in one cycle, and the obtained odd and even sampling sequences are stored in order. In this step, the odd sampling value and even sampling value obtained by sampling can still have the signal before sampling, the details are as follows:

[0033] Suppose ...

Embodiment 2

[0055] Figure 6 A structural diagram of signal data processing provided by the second embodiment of the present invention is shown, and for convenience of description, only parts related to this embodiment are shown. in:

[0056] The sampler 61 is used to synchronize the odd and even timing of the sampling signal, obtain the odd sampling sequence and the even sampling sequence, and store the odd sampling value in the odd sampling sequence and the even sampling value in the even sampling sequence in order; compare adjacent Odd sampling value and even sampling value, determine whether the difference between adjacent odd sampling values ​​and even sampling values ​​is less than the preset difference threshold, if so, keep the odd sampling value and even sampling value, otherwise, discard the odd sampling values ​​and even sampled values.

[0057] In this example, using figure 2 The sampler shown double-samples the incoming signal and retains the valid sampled value. Due to ...

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Abstract

The invention is applicable to the field of signal processing, and provides a method, a device and an intelligent terminal for processing signal data. The method includes acquiring an odd sample sequence and an even sample sequence by the aid of odd and even time sequences of synchronous sampling signals of double samplers, and sequentially storing odd sampled values in the odd sample sequence and even sampled values in the even sample sequence; comparing each odd sampled value to the corresponding adjacent even sampled value, judging whether a difference value of each odd sampled value and the corresponding adjacent even sampled value is smaller than a preset difference value threshold or not, reserving the odd sampled values and the even sampled values if the corresponding difference values of the odd sampled values and the corresponding even sampled values are smaller than the preset difference value threshold, and discarding the odd sampled values and the even sampled values if the corresponding difference values of the odd sampled values and the even sampled values are not smaller than the preset difference value threshold; restoring continuous signals from the reserved odd sampled values and the reserved even sampled values; filtering out high-frequency components of the continuous signals; and performing interpolation processing for discrete sampled values obtained after the high-frequency components of the continuous signals are filtered out, and outputting signals obtained after interpolation processing. The method, the device and the intelligent terminal in an embodiment of the invention have the advantage that a restored signal output effect can be improved.

Description

technical field [0001] The invention belongs to the field of signal processing, and in particular relates to a signal data processing method, device and intelligent terminal. Background technique [0002] At present, the audio, video, and image data output by the smart terminal are all output as signals. The following takes the output image as an example for illustration. In the smart terminal, the displayed image is reconstructed after sampling continuous images. If the sampling frequency of the continuous image is not high enough, it will be impossible to determine whether the sampled point is the sample value of the low-frequency signal or the sample value of the high-frequency signal when reconstructing the image, and when the signal is reconstructed, the high-frequency signal and the low-frequency signal are also It will interfere with each other, and the two overlapping waveforms will cause aliasing and distortion of the image, especially when performing a large-scale ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14H04N5/21
Inventor 吴鹏健张鑫黄小平
Owner SHENZHEN SKYWORTH QUNXIN SECURITY TECH
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