Data signal transmission method and system, signal transmission control method and system

Abstract

A data signal transmission method comprises the following steps: a sending end acquires a data signal and an analog audio signal; the sending end carries out spread spectrum processing on the data signal to obtain a spread spectrum signal; the sending end synthesizes the spread spectrum signal and the analog audio signal into a mixed signal and sends the mixed signal to a receiving end; and the receiving end receives the mixed signal and carries out inverse spread spectrum processing on the mixed signal to obtain the data signal. Bandwidth of the data signal is less than a threshold. In addition, the invention also provides a data signal transmission system, a signal transmission control method and a system. According to the above data signal transmission method and the system, during data signal transmission, the interference with the analogue audio signal is little, and noises generated during data signal transmission can be reduced. The above signal transmission control method and the system can be adopted to minimize the interference with the analogue audio signal during data signal transmission.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data signal transmission method and system, and a signal transmission control method and system. Background technique [0002] With the development of communication technology, smart phones are becoming more and more popular. Smartphones have more applications than traditional mobile terminals that only have call and text message functions. Users can play games, listen to music, and read novels on their smartphones. [0003] The multifunctional earphones for smartphones also have functional improvements compared to earphones of conventional technology. Multifunctional headsets typically include earphones, microphones, and other sensor elements. The microphone acquires voice input, and transmits the analog audio signal of the voice to the smart phone through the audio input interface. The earphone obtains the analog audio signal sent by the smart phone through...

AI Technical Summary

Problems solved by technology

However, the data signal transmitted by DTMF usually has a narrow bandwidth and a large power spectral density, and it is located in the spectral range of the human hearing range of 20 to 20khz. Therefore, the mixed signal formed by the data signal and the analog audio signal is played by an audio device high noise power

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