TWI460662B - Dynamic bar code system and its information transmission method - Google Patents

Description

Dynamic barcode system and information transmission method thereof

The invention relates to a dynamic barcode system and an information transmission method thereof, which are to expand the existing static barcode mechanism, to provide an interactive function of barcodes and to transmit more capacity information.

Today's bar code technology is widely used in various aspects of product packaging, logistics, data exchange (such as purchase and delivery orders, document management, product packaging, application forms, etc.), but the bar code currently used has always had the maximum capacity limit. And issues that can only be provided by a single source.

In terms of the current common bar codes, the common bar codes are European commodity barcode EAN (international commodity barcode system), Code39 code (which can display 43 characters), and UPC code (US unified code, mainly used in the United States and Canada). ), Code128 code (can display 128 ASCII characters), Codabar code (mostly used for barcodes in medical and book fields), Interleaved 2of 5 (can only represent numbers, used in commodity packaging, warehouse and industry) and QR CODE QR CODE is the most widely used barcode system in the current 2D barcode. The main application is the transmission of data, transmission address, telephone, etc., or provides a quick link to the content of the website. The barcode content records the information and allows the user to quickly link. Web pages or telephone speed dialing, many companies now use QR CODE for identity identification; and QR CODE specifications include QR code data capacity and error correction capacity, where QR code data capacity includes digital tolerance Data volume (up to 709 characters), letter allowed data amount (up to 4296 characters), binary digit 8-bit allowable data amount (up to 2,953 bits), Japanese Han Word/katakata allowed data (Shift JIS, up to 1,817 characters), Chinese kanji allowed data (UTF-8, up to 984 characters; BIG5, up to 1,800 characters); The error correction capacity includes L level correction capacity (7% of the code can be corrected), M level correction capacity (15% of the code can be corrected), Q level correction capacity (25% of the code can be corrected), H level Corrected capacity (30% of the code can be corrected).

According to the specification of the above QR CODE, the QR CODE has the problem of maximum capacity limitation for the transmission of data, and now the method of providing the barcode can only provide information from a single aspect, so that less information can be transmitted; therefore, If it is able to provide a dynamic barcode providing method with interactive functions and capable of transmitting more information capacity, this should be an optimal solution.

The invention provides a dynamic barcode system and an information transmission method thereof, which have an interactive function and can transmit information information higher than information contained in a general static barcode.

A dynamic barcode system and an information transmission method thereof, wherein the dynamic barcode system comprises a barcode scanning device for reading a barcode, a barcode display device for dynamically displaying a barcode, and a bar code display device a transparent partition plate between the scanning device and the bar code display device, and a bar code service host connected to the bar code scanning device and the bar code display device, wherein the transparent partition plate can be provided with a screen and a mobile device of the camera lens, wherein the screen of the mobile device faces the barcode scanning device, so that the barcode scanner can read the barcode displayed on the screen, and the camera lens of the mobile device faces the barcode display device In order to enable the camera lens to read the bar code on the bar code display device; in addition, the bar code service host is capable of generating a bar code and outputting to the bar code display device, and the bar code service host is more capable of receiving the bar code scanning device Reading the barcode and identifying the information contained in the barcode; therefore, the mobile device reads the barcode display device The bar code scanner reads the bar code by the bar code displayed on the mobile device, the host can service barcode Receiving the barcode read by the barcode scanning device and identifying the information contained in the barcode, and the identified information is generated by using a dynamic method, so the amount of information transmitted can be more than that in a general static barcode. The amount of information contained.

More specifically, the dynamic barcode system further includes an authentication host connected to the barcode service host, and the authentication host is capable of authenticating the correctness and validity of the information provided by the barcode service host, and generating the processed authentication. News.

More specifically, the dynamic bar code system further includes a transaction host connected to the authentication host, the transaction host being capable of conducting transactions and generating transaction information.

More specifically, the bar code display device is a liquid crystal display, a plasma display, a projection display, an LED, a DMD, an OLED, an FED, an electronic paper E-Paper.

More specifically, the mobile device is a smart phone, PDA or PAD.

More specifically, the barcode scanning device is an image barcode scanner, a laser barcode scanner or a CCD barcode scanner, wherein the image barcode scanner is capable of assisting and utilizing a ring light source. An angle source assists to reduce and reduce reflections and interference from the glass surface.

More specifically, between the barcode scanning device and the mobile device, a lenticular lens can be erected to dynamically adjust the length of the distance to control the size of the device.

More specifically, the barcode is a one-dimensional barcode, a two-dimensional barcode, a QRCODE, or a combination thereof.

In addition, in the information transmission method of the present invention, the first information transmission method is used for quickly and transmitting a large amount of data, and the method can be used to transmit a space between two parties at a time, and each time interval is passed. The bar code service host generates a new bar code graphic, so it is very suitable for the case of fast data transmission, and the bar code service host transmits a large amount of data (for example, graphics or audio and video transmission) to the mobile device. Under this design architecture, The barcode service host is fast Providing a barcode graphic to the mobile device, wherein the mobile device can store the graphic for identification, and after finding the lost or damaged packet, can request the barcode service host to resend; therefore, the first information transmission method has the following steps (1) displaying the starting barcode by a code display device; (2) reading the barcode by a mobile device, and after identifying, determining the appropriate interval for reading the identification, and displaying the time interval barcode by the mobile device; 3) A code scanning device can read the time interval bar code displayed by the mobile device, so that a code service host can obtain communication time interval information, and the bar code service host can sequentially generate according to the agreed time interval. Barcode information for the mobile device to read the information; (4) Then, by reading the barcode and reading the information in sequence, the mobile device can reorganize the data to obtain the complete information content provided by the barcode service host And the mobile device is more capable of presenting the missing packet serial number and displaying the packet serial number barcode; (5) finally, scanning the barcode by the barcode And reading the packet serial number barcode and inputting into the barcode service host, so that the barcode service host can obtain the lost packet serial number on the mobile device, and then displaying the information barcode of the serial number X on the barcode display device until the mobile device After responding to the successful reading of the barcode, the process is completed.

More specifically, the mobile device can set a communication time interval, and the communication time interval is determined by an algorithm calculating a maximum time estimated by reading the correct barcode, and notifying the communication time interval bar code by generating a communication time interval barcode. The barcode service host processes information synchronously.

More specifically, the information is read and identified in sequence, and the information can be processed by first storing the image or by recognizing the edge.

More specifically, the mobile device can display the packet serial number barcode that is missing by itself, and the barcode scanning device reads the packet serial number barcode and inputs the barcode service host, and the barcode service host can extract the corresponding packet information. And then displaying, by the barcode display device, a barcode for carrying the information of the packet.

In addition, in addition to the above methods, there are two other methods for dynamically providing bar codes, wherein the second information transmission method can be used to transmit both sides of the specified transmission rules, and the method must define the starting bar code and end. After the barcode and the barcode are responded to, the information can be transmitted; when the barcode service host provides the starting barcode to the barcode display device, the mobile device can further read the data and provide a response barcode with the serial number information. The response bar code enables the bar code service host to determine whether the mobile device has read the data, and after the bar code service host determines that the mobile device has read the correct data, the next bar code can be displayed. The mobile device can be read sequentially, and the process can be repeated to transmit a large amount of data that is not limited by the capacity of a single bar code; therefore, the second information transmission method has the following steps: (1) display by a code display device Starting bar code; (2) reading the starting bar code by a mobile device, and displaying the response bar code on the mobile device; (3) The code bar is read by a code service host by a code scanning device, and the information read by the mobile device is determined to be correct. If the judgment result is correct, the next information bar code is displayed. Otherwise, if the judgment result is an error. Then repeat the bar code read this time; and (4) repeat step 3 until the bar code service host generates the end bar code.

More specifically, the response barcode includes at least information correctness information and packet serial number.

More specifically, after the bar code service host reads the response bar code of the mobile device and identifies the information, it can further determine whether to provide the next packet or re-provide the packet.

In addition, in addition to the above two methods, there is a third information transmission method, which is a transaction verification method. When the mobile device is placed in the set recognition reading area, the design can be started. The program, when the program is started, the camera on the mobile phone is turned on, and the bar code of the store transaction information displayed by the bar code display device is read to obtain the store number, and the program uses the defined encryption key. (Using IMEI code and SIM card number and user-defined password) to encrypt this information, then use the mobile device to display its ciphertext barcode (the barcode content is encrypted ciphertext, no password, the content is transaction information) And then, after reading and recognizing the barcode by the barcode scanning device, the barcode service host can obtain the ciphertext, and then the barcode service host can connect with an authentication host to compare the ciphertext. If the authentication host successfully unlocks the ciphertext and verifies that the data is correct, it is confirmed on behalf of the user identity, and can provide normal transaction transfer or credit. In the process, the user mobile device does not need to access the Internet, and when the verification and the transaction are successful, the barcode display device can provide the bar code for the transaction transaction and confirmation, and the mobile device reads and completes the entire transaction; if it is a failure, The error information can also be provided by the barcode display device, and the mobile device can read the message for the next step; therefore, the third information transmission method has the following steps: (1) display by a code display device (2) after reading the starting barcode by a mobile device, generating a response barcode containing the transaction ciphertext, and displaying the response barcode on the mobile device; (3) and a code serving host system Obtaining the mobile device by a code scanning device After responding to the barcode and identifying the transaction ciphertext, it is provided to an authentication host, and after the authentication host obtains the transaction ciphertext and verifies the correctness and validity thereof, it notifies a transaction host to perform the transaction; (4) After processing the transaction by a transaction host, the transaction result is replied to the authentication host, and the authentication host can then transmit the processed authentication or transaction information to the barcode service host; (5) the barcode service host After the received authentication transaction processing message is generated into the transaction message barcode, the bar code display device is used to display the transaction message barcode; (6) then, after the mobile device reads the transaction message barcode and solves the transaction result, The mobile device displays an end bar code; and (7) finally, the bar code service host ends the transaction by reading the end bar code by the bar code scanning device.

More specifically, the starting barcode includes at least a store code, a consumption information, and a start information.

More specifically, the response barcode is at least a user code and a transaction ciphertext generated by an encryption key agreed with the authentication host.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Please refer to FIG. 1A and FIG. 1B. FIG. 1 is a schematic structural diagram and a schematic structural diagram of a dynamic barcode system and an information transmission method thereof. The dynamic barcode system 1 includes a barcode scanning device 11 for reading barcodes. a bar code display device 13 for dynamically displaying bar codes (LCD, a display such as an OLED or a TFT, a transparent spacer 12 disposed between the barcode scanning device 11 and the barcode display device 13, and a barcode connected to the barcode scanning device 11 and the barcode display device 13 The service host 14; the barcode scanning device 11 is placed above the transparent partition 12 and kept at a certain distance from the transparent partition 12, and the barcode display device 13 is placed under the transparent partition 12 And maintaining a certain distance from the transparent partition 12; wherein the transparent partition 12 is made of a transparent glass or a transparent plastic, and the transparent partition 12 is provided with a screen and a camera lens. The mobile device 2 is disposed in such a manner that the screen is directed toward the barcode scanning device 11 to enable the barcode scanner 11 to read the barcode displayed on the screen of the mobile device 2, and the action The camera lens of the device 2 faces the bar code display device 13 so that the camera lens can read the bar code on the bar code display device 13; in addition, the bar code service host 14 can generate a bar code and output to the bar code display device 13, and The barcode service host 14 is further capable of receiving the barcode read by the barcode scanning device and identifying the information contained in the barcode.

In addition, the barcode service host 14 is further capable of connecting to an authentication host 15 capable of authenticating the correctness and validity of the information provided by the barcode service host 14, and generating processed authentication information.

In addition, the authentication host 15 is more capable of connecting to a transaction host 16, which is capable of conducting transactions and generating transaction information.

In addition, when reading and recognizing, since the mobile device 2 and the bar code display device 13 are mostly glass surfaces, if the light source is not correctly planned, the polarizing phenomenon is likely to occur, so in actual implementation, the external ambient light source must be excluded ( Such as sunlight, other lamps, etc.) The barcode scanner 11 can be placed in a box (not shown) to remove the externally disturbed ambient light source, and the annular light source 17 can be used or the angle of the light source can be calculated by the average light source. By reducing the shadow, refraction, and polarized light by controlling the light source by itself, the ability and speed of identifying the barcode can be improved.

Between the barcode scanning device 11 and the mobile device 2, a lenticular lens 18 can be erected to dynamically adjust the length of the distance between the barcode scanning device 11 and the mobile device 2 to control the size of the device.

In addition, a light source assist 17 can be added between the barcode scanning device 11 and the mobile device 2 to reduce and reduce reflection and interference on the surfaces of the mobile device 2 and the barcode display device 13.

The bar code agreement rules of the present invention have three types (for fast and transmitting large amounts of data, for transmitting a large amount of data, and using dynamic bar codes as transaction authentication), and the first implementation method for quickly and transmitting a large amount of data is mainly used. The bar code scanning device, the mobile device, the transparent partition, the bar code display device and the bar code service host, as shown in FIG. 2, the bar code display unit can display the preset starting bar code 201 each time the initial operation is started (from The starting bar code has a starting message, including the starting tag, the type of data transferred, the name, the length, the check code, etc., so that when the mobile device is placed on the transparent partition, the camera lens of the mobile device can Reading the bar code displayed by the bar code display device, and the mobile device calculates the reading time, calculates the decoding time, evaluates the maximum decoding, or evaluates the optimal reading time via the algorithm, and can further use the mobile device The camera lens screen displays the time interval bar code 202 (including the bar code display suggested decoding time and the obtained by the bar code display device) Start information); and the bar code can be based host service by means of the barcode scanner to read the time displayed on the screen of the mobile device 203 of the spacer bar code (bar code contains a decoding time and display start funding recommendations The bar code service host can further determine the time interval 204 of each bar code replacement by the obtained time interval bar code (including the bar code showing the recommended decoding time and the start information), and start to generate the bar code 205 according to the time interval, and According to whether it is the last end bar code 206, if not, the bar code is displayed on the bar code display device 207, and after reading the bar code by the mobile device and identifying the information 208, the bar code service host generates the bar code 205 again until it is determined that When the last bar code is finished, the bar code 209 is stopped, and the mobile device reads the last end bar code 210, and once the last end bar code is read, the mobile device stops recognizing and automatically composes the corresponding information. To end the process 211.

In addition, if the mobile device finds that there is missing packet information, it enters the supplementary data phase. As shown in FIG. 3, the mobile device first provides the missing packet serial number barcode 301, and the barcode service host can use the barcode scanning device. After reading the packet serial number barcode 302 that needs to be supplemented, and the barcode service host identifies the packet serial number barcode that needs to be supplemented, the barcode display device can continue to provide the packet information 203 corresponding to the packet serial number barcode, and the mobile device reads After the identification is performed, the mobile device generates a response barcode 304. After the barcode scanning device reads the response barcode 305, the barcode service host will once again determine the correctness of the response barcode 306. If the information is incorrect, the information is re-provided. The packet 307, if the information is correct, further determines whether to continue to fill other missing information packets 308, and if so, returns to step 301, and if not, completes flow 309.

The implementation steps of the first embodiment are as shown in FIG. 4, and the steps are as follows: (1) displaying the starting barcode 401 by a code display device; (2) reading the barcode by a mobile device, and after determining, determining to read Recognizing a suitable interval time, and displaying, by the mobile device, a time interval bar code 402; (3) and a code scanning device capable of reading the time interval bar code displayed by the mobile device, So that the code service host can obtain the communication time interval information, and the barcode service host can sequentially generate the barcode information for the mobile device to read the information 403 according to the agreed time interval; (4) then, by the action After the device reads the barcode and reads the information sequentially, the device can reorganize the data to obtain the complete information content provided by the barcode service host, and the mobile device can further present the missing packet serial number and display the packet serial number barcode. 404; and (5) finally, the barcode scanning device reads the packet serial number barcode and inputs the barcode service host, so that the barcode service host can obtain the lost packet serial number on the mobile device, and then the serial number X The information bar code is displayed on the bar code display device until the mobile device responds to the read success bar code, and then the flow 405 is completed.

The second embodiment is mainly used for transmitting a large amount of data, and there is a need for data reliability, and both sides of the transmission must adopt the same transmission rule. The rule has at least a starting bar code, an ending bar code, a response bar code, and an interval information. As shown in FIG. 5, after the mobile device is placed on the transparent partition, the starting barcode 501 displayed by the barcode display device can be read, and the response barcode 502 is generated and displayed by the mobile device (response to the barcode) The read and decode information check code is included, and the barcode service host can read the response barcode 503 displayed by the mobile device by the barcode scanning device to determine whether the information read by the mobile device is correct; When the bar code service host reads and recognizes, the bar code display device can display the interval information 504 again, and when the mobile device reads such interval information, it does not act and is ready to read the next one. Bar code 505, and according to whether it is generated as the end bar code, the next step 506 is determined. If the bar code is not finished, and the mobile device responds correctly, the Service Master code The machine can receive the response information by the barcode scanning device, and then the barcode display device displays the barcode 507 of the next group of information, and the mobile device can read the next group of information again, and generate and display the response barcode; Therefore, the above steps are repeated until the end of the barcode generation, the mobile device can read the end barcode 508, and the barcode service host confirms the transmission end 509 after reading the end barcode by the barcode scanning device.

In addition, if it is determined that the information read by the mobile device fails, the same information needs to be displayed again until the mobile device responds to the successful reading or the user terminates (the user's termination condition can be set by the number of times limit and the idle time limit) .

In addition, if the mobile device reads the end barcode, it can be combined into a corresponding resource (for example, a PDF file) according to the provided information packet.

The implementation steps of the second embodiment are as shown in FIG. 6, and the steps are: (1) displaying a starting barcode 601 by a code display device; (2) reading the starting barcode by a mobile device, and in the action The response bar code 602 is displayed on the device; (3) Next, the code bar is read by a code service host by a code scanning device, and the information read by the mobile device is determined to be correct. If the judgment result is correct, the next message is displayed. The information bar code, on the other hand, if the judgment result is an error, the bar code 603 read this time is repeatedly displayed; and (4) the step 3 is repeated until the bar code service host generates the end bar code 604.

The third embodiment is mainly for using the dynamic barcode as a method for transaction authentication, and the barcode display device can display the store's starting barcode 701 to provide the store code information and the transaction message, so when the mobile device is placed in the transparent The mobile device can read and discriminate on the partition Knowing the starting bar code displayed by the bar code display device, and after obtaining the transaction information, the user password and the IMEI code on the mobile device and the SIM card number can be used as the ciphertext key to perform the encrypted transaction information. Generating a response barcode with a transaction ciphertext, and finally displaying a response on the screen 702 of the mobile device; and the barcode service host can read the ciphertext barcode 703 displayed by the mobile device by the barcode scanning device to identify The barcode service host can obtain the transaction ciphertext 704, so when the barcode service host obtains the ciphertext, it can be re-encrypted and transmitted to the authentication host to authenticate the transaction correctness 705, and the authentication host can obtain the transaction information through the decryption process, and when After the authentication host confirms that the transaction is confirmed, the transaction host (financial transaction module) is notified to process the transaction 706, and after the transaction is successful, the transaction host replies with the transaction success information (transaction processing message) to the authentication host 707, and then The transaction success message (transaction processing message) is replied to the barcode service host 708 by the authentication host; If the transaction fails, the failure information is transmitted to the barcode service host, and after the barcode service host obtains the transaction reply information returned by the authentication host, the transaction reply message barcode can be generated and displayed on the barcode display device 709 for being provided to the mobile device. The transaction reply message barcode is read and recognized to obtain the transaction result, and finally the transaction result is displayed on the mobile device for the user to know 710.

The implementation steps of the third embodiment are as shown in FIG. 8. The steps are as follows: (1) displaying a starting barcode 801 by a code display device; (2) after reading the starting barcode by a mobile device, generating a Include a response barcode of the transaction ciphertext, and display the response barcode on the mobile device 802; (3) and a code service host obtains the mobile device by using a code scanning device After responding to the barcode and identifying the transaction ciphertext, it is provided to an authentication host, and after the authentication host obtains the transaction ciphertext and verifies the correctness and validity thereof, it notifies a transaction host to perform the transaction 803; 4) After processing the transaction by a transaction host, the transaction result is replied to the authentication host, and the authentication host can then transmit the processed authentication or transaction information to the barcode service host 804; (5) the barcode After the service host generates the transaction message processing barcode by the received authentication transaction processing message, the barcode display device displays the transaction message barcode 805; (6) then, the mobile device reads the transaction message barcode and solves the transaction result. Then, the mobile device displays an end bar code 806; and (7) finally, the bar code service host ends the transaction 807 after reading the end bar code by the bar code scanning device.

The dynamic barcode system and the information transmission method provided by the invention have the following advantages when compared with other conventional technologies:

1. Compared with the general static bar code mechanism, the dynamic bar code system provided by the present invention can transmit higher than the general static bar code in addition to the interactive function to expand the existing static bar code mechanism. The amount of information that contains information.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

1‧‧‧Dynamic barcode system

11‧‧‧Barcode scanning device

12‧‧‧Transparent partition

13‧‧‧Bar code display device

14‧‧‧Barcode Service Host

15‧‧‧Authorized host

16‧‧‧Transaction host

17‧‧‧Light source assist

18‧‧‧ Loug Lenses

2‧‧‧Mobile devices

FIG. 1B is a schematic structural diagram of a dynamic bar code system and an information transmission method thereof according to the present invention; FIG. 1B is a partial schematic structural diagram of a dynamic bar code system and an information transmission method thereof according to the present invention; FIG. 2 is a dynamic bar code system and information transmission thereof according to the present invention; FIG. 3 is a schematic diagram of a supplementary information flow of a first embodiment of a dynamic bar code system and an information transmission method thereof according to the present invention; FIG. 4 is a first embodiment of a dynamic bar code system and an information transmission method thereof according to the present invention; FIG. 5 is a schematic flow chart of the second embodiment of the dynamic bar code system and the information transmission method thereof according to the present invention; FIG. 6 is a flow chart showing the implementation steps of the second embodiment of the dynamic bar code system and the information transmission method thereof according to the present invention; Figure 7 is a flow chart showing the flow of the third embodiment of the dynamic bar code system and its information transmission method of the present invention; and Figure 8 is a flow chart showing the implementation steps of the third embodiment of the dynamic bar code system and the information transmission method thereof.

1‧‧‧Dynamic barcode system

11‧‧‧Barcode scanning device

12‧‧‧Transparent partition

13‧‧‧Bar code display device

14‧‧‧Barcode Service Host

17‧‧‧Light source assist

18‧‧‧ Loug Lenses

2‧‧‧Mobile devices

Claims (19)

A dynamic bar code system comprises: a code scanning device for reading a bar code; a code display device for dynamically displaying a first group of bar codes; and a transparent partition plate disposed on the bar code scanning device and The bar code displays between the devices, and the transparent partition is capable of placing a mobile device having a screen and a camera lens, and the screen of the mobile device is directed toward the bar code scanning device to enable the barcode scanner to read the The first set of barcodes displayed on the screen, the mobile device is further capable of reading the information of the first set of barcodes, and then generating a second set of barcodes, and the camera lens of the mobile device is directed toward the barcode display device to make the camera The lens is capable of reading a second set of bar codes on the bar code display device; and a code service host is connected to the bar code scanning device and the bar code display device, and the bar code service host is capable of generating a first group of bar codes, and Outputting to the barcode display device, and the barcode service host is more capable of receiving the second group of barcodes read by the barcode scanning device, and identifying the package included in the second group of barcodes After the information, and then generate a new first set of bar codes based on the information contained within the second set of bar code, the bar code and transmitted to the display device for display. The dynamic bar code system of claim 1, further comprising an authentication host connected to the bar code service host, the authentication host being capable of authenticating the correctness and validity of the information provided by the bar code service host, and generating Processed authentication information. The dynamic bar code system of claim 2, further comprising a transaction host connected to the authentication host, the transaction host being capable of conducting transactions and generating transaction information. The dynamic barcode system according to claim 1, wherein the barcode display device is Liquid crystal display, plasma display, projection display, LED, DMD, OLED, FED, electronic paper E-Paper. The dynamic barcode system according to claim 1, wherein the mobile device is a smart phone, a PDA or a PAD. The dynamic bar code system of claim 1, wherein the bar code scanning device is an image bar code scanner, a laser bar code scanner or a CCD bar code scanner. The dynamic bar code system of claim 6, wherein the image bar code scanner is capable of assisting with a circular light source and a multi-angle light source to reduce and reduce reflection and interference of the glass surface. The dynamic bar code system of claim 1, wherein the bar code scanning device and the mobile device are capable of erecting a meniscus lens to dynamically adjust the distance to control the size of the device. For example, the dynamic barcode system described in claim 1 is characterized in that the barcode is a one-dimensional barcode, a two-dimensional barcode, a QRCODE or a combination thereof. An information transmission method, the steps are: (1) displaying a starting barcode by a code display device; (2) reading the information of the starting barcode by a mobile device, and after determining, determining the appropriate interval for reading the identification And generating, by the mobile device, a time interval bar code; (3) the one code scanning device is capable of reading the time interval bar code displayed by the mobile device, so that the one code service host can obtain the communication time interval information, and the The barcode service host is further capable of sequentially generating barcode information to the barcode display device for reading information by the mobile device according to the agreed time interval; (4) Then, after the mobile device reads and recognizes the read barcodes sequentially, the data can be reorganized to obtain the complete information content provided by the barcode service host, and the mobile device can further replace the lost packets. The serial number is presented, and the packet serial number barcode is displayed; and (5) finally, the barcode serial number barcode is read by the barcode scanning device and input into the barcode service host, so that the barcode service host can obtain the loss on the mobile device. The packet serial number is displayed on the barcode display device, and the mobile device completes the process after responding to the successful barcode reading. The information transmission method according to claim 10, wherein the mobile device is capable of setting a communication time interval, and the communication time interval is calculated by an algorithm to calculate a maximum time estimated by reading the correct barcode, and is generated by A communication time interval bar code is used to notify the bar code service host to process the information synchronously. For example, in the information transmission method described in claim 10, in which the information is sequentially read and recognized, the information can be processed by first storing the image or by recognizing the edge while reading. The information transmission method according to claim 10, wherein the mobile device is capable of displaying a packet serial number barcode that is missing by itself, and reading the packet serial number barcode by the barcode scanning device and inputting the barcode service host, the barcode service The host can extract the corresponding packet information, and then display the barcode of the packet information by the barcode display device. An information transmission method, the steps are: (1) displaying a starting barcode by a code display device; (2) reading information of the starting barcode by a mobile device, and generating and displaying a response barcode on the mobile device; (3) Next, the code bar is read by a code service host by a code scanning device, and it is judged whether the information read by the mobile device is correct, and if the judgment result is correct, the next information bar code is displayed, and if not, if judged If the result is an error, the bar code read this time is repeatedly displayed; and (4) Step 3 is repeated until the bar code service host generates the end bar code. The information transmission method of claim 14, wherein the response barcode includes at least information correctness information and a packet serial number. For example, in the information transmission method described in claim 14, wherein the barcode service host reads the response barcode of the mobile device and identifies the information, it can further determine whether the next packet is to be provided or the packet is re-provided. An information transmission method, the steps are: (1) displaying a starting barcode by a code display device; (2) after reading the information of the starting barcode by a mobile device, generating a response barcode including the transaction ciphertext And displaying the response barcode on the mobile device; (3) the one-code service host obtains the response barcode displayed by the mobile device by using a code scanning device, and after identifying the transaction ciphertext, providing the After the authentication host obtains the transaction ciphertext and verifies the correctness and validity thereof, it notifies a transaction host to perform the transaction; (4) after processing the transaction by a transaction host, the transaction result is replied to The authentication host can further transmit the processed authentication or transaction information to the barcode service host; (5) the barcode service host generates the transaction message by receiving the authentication transaction processing message. After the barcode, the barcode display device is used to display the transaction message barcode; (6) then, after the mobile device reads the transaction message barcode and solves the transaction result, the mobile device displays an end barcode; and (7) Finally, the bar code service host ends the transaction by reading the end bar code by the bar code scanning device. The information transmission method according to claim 17, wherein the starting barcode includes at least a store code, a consumption information, and a start information. The information transmission method according to claim 17, wherein the response barcode is at least a user code and a transaction ciphertext generated by an encryption key agreed with the authentication host.