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An efficient and safe data transmission method with mixed QR codes

IP.com Disclosure Number: IPCOM000247608D
Publication Date: 2016-Sep-20
Document File: 4 page(s) / 244K

Publishing Venue

The IP.com Prior Art Database

Abstract

In the environment where there are no wire network, wireless network or mobile signal, devices can not easily transfer data with each other, especially for large data transmission. In our invention, we take advantage of the characteristics of multi-dimension QR code to include security and large data transmission. We use two-dimension (black-white) QR code for the transmission of transport protocol for it is stable, less error-prone, and can be easily distinguished. In this way, control data can be easily identified from the mixture of data stream and control information stream, which will greatly simplify the protocol control and data transmission process.  

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An efficient and safe data transmission method with mixed QR codes

In the environment where there are no wire network, wireless network or mobile signal, devices can transfer data with QR code. In general, one QR code only includes limited information, 1KB or 2KB data. However, if data are transferred with continuous QR codes between two devices, the limitation will disappeared, more information will be able to be transferred in this way. Moreover, using black-white (two-dimension) QR code to transport handshake and multi-dimension QR code(here we take colorful QR code as an example) for data transmission between sender and receiver will greatly improve the transmission efficiency and security. With this method, except for the transmission of small files, certificates, normal text files, big files such as pictures, videos and so on can also be transferred in this way.

The main claim points are as following:


1) Data transmission will be carried out using two types of QR code, control information stream in black-white QR code and datastream in multi-dimension QR code. Two-dimension (black-white) QR code is stable, less error-prone, and can be easily distinguished; Multi-dimension QR code is more efficiency to transport data and at least one dimension of the multi-dimension QR code could beused for encryption data.


2) Transmission security will be guaranteed by taking advantage of the password table and at least one dimension of the multi-dimension QR code. For example, we use three-dimension for data transfer, and the third dimension - color will be used for both security and data transfer. The meaning of the different color could be changed during two separated transmission.


3) Receiver sends its unique ID to sender while transmission, sender identifies this ID and then transfers an encryption tableto receiver. In designed encryption algorithm, ID and encryption table are keys during encryption and decryption.

Sender encodes data into multi-dimension QR Code format, sends to receiver an encryption table with black-white (two-dimension) QR code. Then sender will start a transport handshake process with receiver at first. Transport handshake information is includedinto a QR code, includes the following information: handshake flag, QR code format, Error control mechanism, Transport ACK mechanism, Transmission mode, number system choice and so on. After handshake process, sender displays QR codes frame by frame, and it's continuous. Receiver scans the QR codes continuously. It also has error control when transmission. If there is any failed QR frame when receiver parses. Receive generates a QR code which includes the number of failed frame, sender will transfer them...