Transmission device, receiving device, system and method for implementing communication based on ultrasonic wave

Abstract

The present invention discloses a transmitting device based on ultrasonic communication, which includes information modulate unit and audio- sound wave launcher heard by human ear; the information modulate unit is used for receiving original communication information and modulating the original communication information into low frequency envelope high-frequency analog signals to drive the launcher; The launcher is used for receiving high-frequency sound wave of carrying original communication information transited from low frequency envelope high-frequency analog signals of the information modulate unit, and is for sending. Ultrasonic wave communication can be realized with lower cost of using the present invention. The present invention also discloses Receiving apparatus based on supersonic wave communication, audio system and method, so supersonic wave communication can be realized with lower cost.

Description

technical field [0001] The invention relates to communication technology, in particular to a sending device, a receiving device, a system and a method for realizing communication based on ultrasonic waves. Background technique [0002] The sound that people can hear is due to the vibration of objects. Its frequency is in the range of 20HZ to 20KHZ, and it is called ultrasound if it exceeds 20KHZ. Commonly used ultrasonic frequencies are tens of KHZ to tens of MHZ. Ultrasonic communication means that both sides of the communication use ultrasonic as the carrier of communication information to realize information interaction. [0003] At present, standard ultrasonic sensors are used in both the sending device and the receiving device for communication based on ultrasonic / ultrasonic waves, but standard ultrasonic sensors are relatively expensive. [0004] In order to solve the above-mentioned expensive problem, US Patent No. 7,010,098 filed on September 6, 2001 discloses a de...

AI Technical Summary

Problems solved by technology

[0005] The device uses a traditional speaker (Speaker) as an ultrasonic transmitter, and a microphone as an ultrasonic receiver for ultrasonic communication, which overcomes the relatively expensive defect of relying on standard ultrasonic sensors to send and receive ultrasonic waves, but this solution still exists. Disadvantages: The processing circuit on the handset of the phone determines whether the phone is close to the base by judging whether the received electrical signal is greater than the preset threshold, and an on-hook signal is generated when it is close

Therefore, the ultrasonic waves generated by this scheme can only be used for sensing objects, not for communication

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