Sound wave based wireless information push method
A wireless and sound wave technology, applied in the field of information transmission research, can solve the problems of ultrasonic refraction and dispersion, slow ultrasonic transmission rate, short transmission distance, etc., to achieve the effect of ensuring confidentiality
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Embodiment 1
[0043] In the prior art, ultrasonic waves are easily dispersed by refraction, resulting in short ultrasonic transmission distances. In this embodiment, ultrasonic waves are adhered to the audio and fused with audible waves, so that the audible waves form a protective umbrella to protect the information carried by ultrasonic waves from being dispersed by refraction. Lose.
[0044] The sound wave-based information wireless push method described in this embodiment can be applied to various occasions, for example:
[0045] 1. Combination of TV advertisements: Ultrasonic waves can be contained in the video. When users watch Fenjiu advertisements, the microwaves will be captured on the mobile terminal, so that Fenjiu will appear on the screen of the mobile terminal and can be purchased with one click.
[0046] 2. Combination of concerts: When the audience is listening to the concert, the microwave can be attached to the audio, and the user's mobile phone can capture the microwave, a...
Embodiment 2
[0061] Present embodiment except following feature other structures are with embodiment 1:
[0062] In the prior art, ultrasonic information transmission is prone to data loss. In this embodiment, an ultrasonic fault-tolerant algorithm is specially proposed by adopting a fault-tolerant mechanism similar to that of a two-dimensional code. When the information loss rate is less than 40%, the data can be automatically filled.
[0063] The fault-tolerant algorithm is a kind of forward error correction channel coding. The whole is based on "any k certain points can represent a polynomial with an order of at least k-1". In fact, more than k points are sent, even if there are some errors in the middle, as long as If the receiver can receive enough points correctly, the original polynomial can be deduced through the algorithm, so as to obtain the information.
[0064] see image 3 , according to the above principles, the steps of the fault-tolerant algorithm adopted in this embodime...
Embodiment 3
[0069] Present embodiment except following feature other structure is with embodiment 2:
[0070] Ultrasonic transmission rate is slow in the prior art. This embodiment adopts a similar hexadecimal encoding to propose an ultrasonic transmission data encoding, supplemented by a delay sending algorithm (that is, a method of accumulating data packets offline and sending data packets online) to increase the data transmission rate.
[0071] see Figure 4 , the delayed sending algorithm described in this embodiment, comprising the steps of:
[0072] (6-1) Determine whether the size of the information data exceeds the limit value, if yes, execute step (6-2); otherwise execute step (6-3);
[0073] (6-2) Judging whether the current network transmission speed reaches the limit value, if so, execute the step (4-3) described in embodiment 1, otherwise the mobile terminal will place the data packet in a buffer, and send it to the processing station after network optimization device;
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