A control method, device and system for data transmission

Abstract

The invention provides a data transmission control method, device and system; the method uses a mapping table as reference so as to determine target data, thus improving data transmission accuracy, wherein the mapping table is determined according to lead sample data and sine waves in a first zone in simulation signals; the method comprises the following steps: obtaining simulation signals comprising sine waves matched with each binary system digit one by one in the transmission data; using preset grouping rules to group the lead sample data and sine waves in the first zone in simulation signals, thus obtaining at least one lead sample number set and a first zone set matched with the lead sample number set one by one; determining the mapping table used for verifying binary system digits matched with each sine wave in a second zone in the simulation signals according to the lead sample number set and the first zone set; using the mapping table to determine the binary system digits matched with each sine wave in the second zone in the simulation signals, thus obtaining the target data.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission control method, device and system. Background technique [0002] The data transmission scheme usually adopts the following method: before data transmission at the sending end, first convert the original binary data into a set of sine wave data consisting of a first frequency and a second frequency according to a preset conversion table, wherein the The preset conversion table includes: a mapping relationship between frequency and binary data, for example, using the first frequency to represent binary data "0", and using the second frequency to represent binary data "1". Then, assemble the converted sine wave data into audio data in Pulse Code Modulation (PCM) format. Finally, the assembled audio data in PCM format is sent through the audio channel. The receiving party obtains audio data in PCM format through audio recording, and then restores ...

AI Technical Summary

Problems solved by technology

If the receiver's hardware device is not well adapted to the audio frequency of 5kHZ, the converted sine wave data may be {3K, 12K, 3K, 12K, 3K, 7K, 6K, 9K}, see Figure 1b , at this time the data restored by the receiver may be 01010101, that is, the data cannot be restored, resulting in data transmission failure

[0005] To sum up, since different hardware devices have different adaptation effects to different frequencies, the frequency of the sine wave of the obtained audio data is inconsistent with the frequency of the original binary data. The frequency of the wave is converted bit by bit, and the converted binary data is also different, that is, the original data cannot be restored, resulting in data transmission failure

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