CN101059788B - Data exchange method and system based on continuous machine readable code - Google Patents

Abstract

The invention relates to a data exchange method and system based on continuous mechanical readable code, which is used for transmitting data between a first device and a second device, wherein the first device is provided with a display, the second device is provided with an image capturer, and firstly, the first device divides the data to be transmitted into a plurality of blocks; secondly, the first device converts the blocks into a plurality of corresponding mechanical readable codes and circularly displays the plurality of mechanical readable codes on a display; then, continuously capturing a plurality of mechanical readable codes displayed by the display of the first device by an image capturing device of the second device, and respectively decoding the captured plurality of mechanical readable codes to obtain a plurality of blocks; finally, the second device combines the plurality of blocks, thereby obtaining the data.

Description

Data exchange method and system based on continuous mechanical-readable code

Technical field

The invention relates to a kind of technology of data transmission, refer in particular to a kind of method for interchanging data and system based on continuous mechanical-readable code.

Prior art

Because popularizing of wireless telecommunications, mobile phone has become the communication device of modern's indispensability.The built-in digital camera module of many mobile phones, so, these mobile phones promptly can be used as digital camera and use.Simultaneously, the mobile phone of many built-in digital camera modules also possesses the function of acquisition two-dimensional bar.The user can utilize the information that captures out from two-dimensional bar, do many ductile services, for example behind the two-dimensional bar of a food of acquisition, can on network, inquire about the relevant information of this food with the corresponding identification code of this two-dimensional bar, for example the place of production, collecting time, holding time ... or the like.Because such application is fit to be placed on the mobile phone very much, therefore the functional module of the automatic identification of the built-in two-dimensional bar of many mobile phones has been arranged at present.

The built-in digital camera module of many mobile phones is also arranged and possess the function of doing exchanges data with personal computer.So, the variation that increasingly sophisticated and mobile phone is used when the agreement of wireless telecommunications, mobile phone can be downloaded firmware by personal computer, with the agreement of the wireless telecommunications on the new cell-phone more or the application software on the mobile phone.Mobile phone also can be uploaded to personal computer with the photograph that digital camera module captured.Mobile phone more can be downloaded telephone directory or individual travel schedule to mobile phone by doing the function of exchanges data with personal computer, and time is produced inconvenient problem to avoid carrying out input at mobile phone.

Known mobile phone is to utilize wireless communication techniques such as blue bud, infrared ray, wireless telecommunications LAN or the connecting interface of USB and personal computer to carry out data transmission.Yet, no matter use blue bud, infrared ray, wireless telecommunications LAN or USB connecting interface, need possess relevant hardware module on the mobile phone, therefore, can increase the production cost of mobile phone.For example: when using blue bud wireless communication technique, personal computer and mobile phone all need possess blue bud wireless communication module can transmit data.And, when using the USB connecting interface, also need possess a USB line.Hence one can see that, and known mobile phone and the data transmission between the personal computer still have many shortcomings and have carries out improved necessity.

Summary of the invention

One of purpose of the present invention provides based on the method for interchanging data of continuous mechanical-readable code and system, thereby can transmit data easily between mobile phone and personal computer.

Another object of the present invention provides based on the method for interchanging data of continuous mechanical-readable code and system, and it utilizes existing hardware, and can transmit data between mobile phone and personal computer, thereby can be able to increase the additional function of the mobile phone with digital camera.

According to characteristics of the present invention, the present invention proposes a kind of method for interchanging data based on continuous mechanical-readable code, be to be used between one first device and one second device, transmitting data, wherein, this first device has a display, this second device has a video capture device, and this method comprises: (A) these first device data that will transmit are divided into a plurality of blocks; (B) this first device should be converted to corresponding a plurality of mechanical-readable code by a plurality of blocks, and should be shown in circularly on this display by a plurality of mechanical-readable codes; (C) video capture device with this second device captures these shown a plurality of mechanical-readable codes of this first device, display continuously, and respectively these a plurality of mechanical-readable codes of acquisition is deciphered, to obtain these a plurality of blocks; (D) this second device should make up by a plurality of blocks, thereby obtains this data.

According to another characteristics of the present invention, the present invention proposes a kind of exchanges data system based on continuous mechanical-readable code, comprises one first device and one second device.This first device has a display and a mechanical-readable code generation unit, the data that this first device will transmit are divided into a plurality of blocks, and should be converted to corresponding a plurality of mechanical-readable code by a plurality of blocks, and should be shown in circularly on this display by a plurality of mechanical-readable codes with this mechanical-readable code generation unit.This second device has a video capture device and a mechanical-readable code decoding unit, this second device captures these shown a plurality of mechanical-readable codes of display of this first device continuously with this video capture device, and respectively these a plurality of mechanical-readable codes of acquisition are deciphered with this mechanical-readable code decoding unit, to obtain these a plurality of blocks, this second device also should make up by a plurality of blocks, thereby obtains this data.

Description of drawings

Fig. 1 is a kind of synoptic diagram of uniting based on the exchanges data of continuous mechanical-readable code of the present invention.

Fig. 2 is the calcspar of first device of the present invention and second device.

Fig. 3 is the process flow diagram that first device of the present invention shows mechanical-readable code.

Fig. 4 is the process flow diagram of second device acquisition of the present invention and decoding mechanical-readable code.

Fig. 5 shows that the data that will transmit are divided into a plurality of blocks and add the signal of header data at each block.

Fig. 6 is the process flow diagram that first device of another embodiment of the present invention shows mechanical-readable code.

Fig. 7 is the process flow diagram of second device acquisition of the present invention and decoding mechanical-readable code.

The primary clustering symbol description:

First device, 100displays 110

Mechanical-readablecode generation unit 120controllers 130

Mechanical-readablecode decoding unit 150video capture devices 140

Mechanical-readable code 55,160data 170

Second device, 200video capture devices 210

Mechanical-readablecode decoding unit 220controllers 230

Mechanical-readablecode generation unit 250 displays 240

Block 50

Block order 61block sums 62

Embodiment

Fig. 1 is the synoptic diagram of a kind of data exchange system based on continuous mechanical-readable code of the present invention, comprises one first device, 100 and 1 second device 200.Thisfirst device 100 can be personal computer, mobile computer, personal digital assistant, camera cell phone or any equipment with display device one of them, thissecond device 200 can be personal computer, mobile computer, personal digital assistant, camera cell phone or any equipment with display device one of them.In the present embodiment, thisfirst device 100 is a personal computer, and thissecond device 200 is a camera cell phone.

As shown in Figure 1, these first device, 100data 170 that tendency to develop is sent are shown on itsdisplay 110 with mechanical-readable code 160.Thissecond device 200 captures the shown mechanical-readable code 160 of this first device, display of 100 110 with avideo capture device 210, to reach the purpose of exchanges data.

Fig. 2 is the calcspar of thisfirst device 100 and this second device 200.Thisfirst device 100 mainly comprises adisplay 110, a mechanical-readablecode generation unit 120, reaches acontroller 130, and more can have avideo capture device 140 and a mechanical-readable code decoding unit 150.The data that thecontroller 130 of thisfirst device 100 will transmit are divided into a plurality ofblocks 50, and should be converted to corresponding a plurality of mechanical-readable code 160 by a plurality ofblocks 50 with this mechanical-readablecode generation unit 120, and, as shown in Figure 1, should be shown in circularly on thisdisplay 110 by a plurality of mechanical-readable codes 160.

Thissecond device 200 mainly includes avideo capture device 210, a mechanical-readablecode decoding unit 220, reaches acontroller 230, and more can have adisplay 240 and a mechanical-readable code generation unit 250.Thissecond device 200 captures these shown a plurality of mechanical-readable codes 160 of this first device, display of 100 110 continuously with thisvideo capture device 210, and respectively these a plurality of mechanical-readable codes 160 of acquisition are deciphered with this mechanical-readablecode decoding unit 220, to obtain these a plurality ofblocks 50, thecontroller 230 of thissecond device 200 also should make up by a plurality ofblocks 50, thereby obtains thisdata 170.

And thevideo capture device 140 of thisfirst device 100 and mechanical-readablecode decoding unit 150, thedisplay 240 that reaches thissecond device 200 and mechanical-readablecode generation unit 250 can be reached the effect of automatic end data exchange.When thissecond device 200 obtained thisdata 170, thissecond device 200 produced the mechanical-readable code 55 that generation end of list (EOL) transmits by this mechanical-readablecode generation unit 250, and it is shown in its display 240.This finishes the mechanical-readable code 55 of transmissionvideo capture device 140 acquisitions of thisfirst device 100, and decipher by the mechanical-readable code 55 that 150 pairs of these end of this mechanical-readable code decoding unit transmit, finish to transmit control signal and produce one, show these a plurality of mechanical-readable codes 160 on itsdisplay 110 thereby stop at.

Fig. 3 is the process flow diagram thatfirst device 100 of the present invention shows mechanical-readable code.Fig. 4 is the process flow diagram of second device of the present invention, 200 acquisitions and decoding mechanical-readable code.The present invention by the flow process of Fig. 3 and Fig. 4, can be sent to the data of thisfirst device 100 thissecond device 200 respectively.

As shown in Figure 3, in step S310, thiscontroller 130 has judged whether thatdata 170 will transmit, if judge havedata 170 to transmit, then execution in step S320 does not havedata 170 to transmit as if judging, then resumes step S310.In step S320, these first device, 100data 170 that will transmit by thiscontroller 130 are divided into a plurality of blocks 50.Because thedata 170 that will transmit may be greater than 160 data volumes that can carry of a mechanical-readable code, so thedata 170 that need to transmit are carried out dividing processing.

In step S330, thiscontroller 130 will add header data in eachblock 50, as shown in Figure 5, thedata 170 that transmit are to be divided into a plurality of blocks 501 ~ 509, and wherein the header data that added of eachblock 50 comprises thisblock 50 at theorder 61 of these a plurality of blocks 501 ~ 509 and thesum 62 of block.Since need a plurality of mechanical-readable codes 160 are shown on thisdisplay 110 circularly, in eachblock 50, add header data, to be used to distinguish eachblock 50 pairing mechanical-readable code 160.

In step S340, thisfirst device 100 should be converted to corresponding a plurality of mechanical-readable code 160 by a plurality ofblocks 50 by this mechanical-readable code generation unit 120.In step S350, and should be shown in circularly on thisdisplay 110 by a plurality of mechanical-readable codes 160.

In step S410, thissecond device 200 usesvideo capture device 210 to capture thedisplay 110 present shown mechanical-readable codes 160 of thisfirst device 100 continuously.Video capture device 210 is with these shown a plurality of mechanical-readable codes 160 of this first device of picture frame mode (frame-by-frame)acquisition acquisition 100 displays 110.In step S420, thissecond device 200 uses this mechanical-readable code 160 of 220 pairs of acquisitions of these mechanical-readable code decoding units to decipher, to obtain theblock 50 corresponding with this mechanical-readable code 160.

In step S430, whether thiscontroller 230 received to judge thisblock 50 according to the order of the header data in this block 50.If step S430 judges that thisblock 50 did not receive, then execution in step S440 judges that as if step S430 thisblock 50 had received, then execution in step S410.

In step S440, store this block 50.In step S450, thiscontroller 230 judges whether to still have the mechanical-readable code that does not receive according to the sum of this header data again, if judging, step S450 do not had the mechanical-readable code that does not receive, execution in step S460 then, if judging, step S450 still has the mechanical-readable code that does not receive, then execution in step S410.

In step S440, thissecond device 200 should make up by a plurality ofblocks 50, thereby obtains this data 170.In step S470, thissecond device 200 produces the mechanical-readable code 55 that generation end of list (EOL) transmits, and it is shown on itsdisplay 240, to finish the transmission of 200 in thisfirst device 100 and this second device.

In step S360, this finishes the mechanical-readable code 55 of transmissionvideo capture device 140 acquisitions of thisfirst device 100, and decipher with the mechanical-readable code 55 that 150 pairs of these end of this mechanical-readable code decoding unit transmit, finish to transmit control signal and produce one, stop at these a plurality of mechanical-readable codes of demonstration on itsdisplay 110 thereby thiscontroller 130 transmits control signal according to this end.

In other embodiments, thissecond device 200 produces an indicator signal when step S470, to represent the transmission of 200 in thisfirst device 100 of end and this second device.This indicator signal can be the voice signal of a prompting, and when the user heard this voice prompt, the mechanical-readable code that promptly finishes thissecond device 200 received.

Fig. 6 is the process flow diagram thatfirst device 100 of another embodiment of the present invention shows mechanical-readable code.Fig. 7 is second device, 200 acquisitions of Fig. 6 correspondence and the process flow diagram of decoding mechanical-readable code.The process flow diagram of Fig. 6 is all identical except that step S660 with the process flow diagram of Fig. 3, will not give unnecessary details.In step S660, thisfirst device 100 judges whether to reach a schedule time, and if not, resumes step S350 then is if 130 of this controllers stop at and show these a plurality of mechanical-readable codes on its display 110.If thisdisplay 110 shows that at every turn mechanical-readable codes 160 use a second, and nine mechanical-readable codes 160 are arranged, thisdisplay 110 shows that this 160 of group mechanical-readable code spent for nine seconds.At this moment, this schedule time can be set at for 27 seconds, and so 110 of this displays repeat to show this group mechanical-readable code 160 3 times.The process flow diagram of Fig. 7 is all identical except that step S750 with the process flow diagram of Fig. 4, will not give unnecessary details.In step S750, thissecond device 200 judges whether to reach a schedule time, if not, and resumes step S410 then, if, execution in step S460 then.

In present embodiment, this mechanical-readable machine is a two-dimensional bar.Simultaneously in present embodiment, this mechanical-readablecode decoding unit 150, mechanical-readablecode decoding unit 220, mechanical-readablecode generation unit 120, and mechanical-readablecode generation unit 250 be hardware module.Yet in other embodiments, this mechanical-readablecode decoding unit 150, mechanical-readablecode decoding unit 220, mechanical-readablecode generation unit 120, and mechanical-readablecode generation unit 250 can be software module.When it was software module, known mobile phone with digital camera can be carried out data transferring method of the present invention, can increase the additional function of the mobile phone with digital camera and need not increase hardware cost.

From the above, in the known two-dimensional bar utilization, two-dimensional bar needs to produce in advance, and its entrained information is fixed, and it can't be applicable to that two data between the device transmit.And the present invention is a plurality of mechanical-readable codes with data conversion, utilizesfirst device 100 dynamically to produce a plurality of mechanical-readable codes, and 200 entrained information of a plurality of mechanical-readable codes of acquisition of second device are carried out the data transmission and can allow between two devices.And in the utilization of known two-dimensional bar, the information that two-dimensional bar institute can carry has its data quantitative limitation, and the technology of the present invention can allow and carries out data between two devices and transmit and the quantitative limitation of breakthrough data.Simultaneously, the technology of the present invention need not increase the hardware cost of mobile phone, can between mobile phone and personal computer, transmit data easily, not only need not possess the USB cable and come to be connected with USB interface or also need not install wireless communication module (as blue bud module etc.), the while can increase the additional function of the mobile phone with digital camera.

The foregoing description is only given an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claims are described, but not only limits to the foregoing description.

Claims (16)

Translated fromChinese

1.一种以连续性机械可读码为基础的数据交换方法，是用于在一第一装置及一第二装置间传送数据，其中，所述第一装置具有一显示器，所述第二装置具有一影像撷取器，所述方法包含：1. A data exchange method based on continuous machine-readable codes, used to transmit data between a first device and a second device, wherein the first device has a display, and the second The device has an image capture device, and the method includes:(A)所述第一装置将要传送的数据分割为多个区块；(A) the first device divides the data to be transmitted into a plurality of blocks;(B)所述第一装置将所述多个区块转换为相对应之多个机械可读码，并将所述多个机械可读码循环地显示于所述显示器上；(B) the first device converts the multiple blocks into corresponding multiple machine-readable codes, and displays the multiple machine-readable codes on the display cyclically;(C)所述第二装置的影像撷取器连续地撷取所述第一装置的显示器所显示的所述多个机械可读码，且分别对已撷取的所述多个机械可读码进行译码，以获得所述多个区块；以及(C) The image capture device of the second device continuously captures the plurality of machine-readable codes displayed on the display of the first device, and separately performs the capture of the plurality of machine-readable codes code to obtain the plurality of blocks; and(D)所述第二装置将所述多个区块进行组合，从而获得所述数据。(D) The second device combines the multiple blocks to obtain the data.2.根据权利要求1所述的数据交换方法，其中，于所述步骤(B)中，每一区块中加入有标头数据，其中所述标头资料包含其对应区块在所述多个区块的顺序及所述多个区块的总数。2. The data exchange method according to claim 1, wherein, in the step (B), header data is added to each block, wherein the header data includes its corresponding block in the multiple The sequence of the blocks and the total number of the plurality of blocks.3.根据权利要求2所述的数据交换方法，其中所述步骤(C)还包含：3. The data exchange method according to claim 2, wherein said step (C) also comprises:(C1)以所述第二装置的影像撷取器撷取所述第一装置的显示器目前所显示的机械可读码；(C1) using the image capture device of the second device to capture the machine-readable code currently displayed on the display of the first device;(C2)将所撷取的机械可读码进行解码，以获得对应的区块，且依据所述区块中的标头数据的顺序，以判断所述区块是否已接收过；(C2) Decoding the captured machine-readable code to obtain a corresponding block, and judging whether the block has been received according to the order of the header data in the block;(C3)若步骤(C2)判定所述区块未接收过，则储存所述区块，再依据所述标头数据的总数判断是否仍有未接收的机械可读码；以及(C3) If step (C2) determines that the block has not been received, then store the block, and then determine whether there are still unreceived machine-readable codes according to the total number of header data; and(C4)若步骤(C3)判定已无未接收的机械可读码，则结束所述第一装置及所述第二装置间的传送，否则执行步骤(C1)。(C4) If step (C3) determines that there is no unreceived machine-readable code, then end the transmission between the first device and the second device; otherwise, execute step (C1).4.根据权利要求3所述的数据交换方法，其中所述第一装置还具有一影像撷取器，所述第二装置还具有一显示器，所述方法在步骤(C)之后，还包含下列步骤：4. The data exchange method according to claim 3, wherein said first device also has an image capture device, said second device also has a display, said method after step (C), also includes the following step:(E)所述第二装置产生一代表结束传送的机械可读码，并将其显示于其显示器上；以及(E) said second device generates a machine readable code representing the end of the transfer and displays it on its display; and(F)所述第一装置的影像撷取器撷取所述结束传送的机械可读码，并对所述结束传送的机械可读码进行译码，而产生一结束传送控制信号，从而停止在其显示器上显示所述多个机械可读码。(F) The image capture device of the first device captures the machine-readable code of the end of transmission, and decodes the machine-readable code of the end of transmission, and generates a control signal of end of transmission, thereby stopping The plurality of machine-readable codes are displayed on a display thereof.5.根据权利要求1所述的数据交换方法，其中，所述第二装置的影像撷取器是以图框方式撷取所述第一装置的显示器所显示的所述多个机械可读码。5. The data exchange method according to claim 1, wherein the image capture device of the second device captures the plurality of machine-readable codes displayed on the display of the first device in a frame format .6.根据权利要求1所述的数据交换方法，其中，所述机械可读码为二维条形码。6. The data exchange method according to claim 1, wherein the machine-readable code is a two-dimensional barcode.7.根据权利要求3所述的数据交换方法，所述方法在步骤(C)之后，还包含下列步骤：7. The data exchange method according to claim 3, after the step (c), the method further comprises the following steps:(G)所述第二装置产生一代表结束传送的指示信号，并停止由所述第二装置的影像撷取器撷取所述第一装置的显示器所显示的所述多个机械可读码。(G) The second device generates an indication signal representing the end of transmission, and stops capturing the plurality of machine-readable codes displayed on the display of the first device by the image capture device of the second device .8.根据权利要求2所述的数据交换方法，其中所述步骤(C)还包含：8. The data exchange method according to claim 2, wherein said step (C) also comprises:(C5)以所述第二装置的影像撷取器撷取所述第一装置的显示器目前所显示的机械可读码；(C5) using the image capture device of the second device to capture the machine-readable code currently displayed on the display of the first device;(C6)将所撷取的机械可读码进行解码，以获得对应的区块，且依据所述区块中的标头数据的顺序，以判断所述区块是否已接收过；(C6) Decoding the retrieved machine-readable code to obtain a corresponding block, and judging whether the block has been received according to the order of the header data in the block;(C7)若步骤(C6)判定所述区块未接收过，则储存所述区块，再判断是否达一预定时间；以及(C7) If step (C6) determines that the block has not been received, then store the block, and then judge whether it has reached a predetermined time; and(C8)若步骤(C7)判定已达前述预定时间，则结束所述第一装置及所述第二装置间的传送，否则执行步骤(C5)。(C8) If it is determined in step (C7) that the aforementioned predetermined time has elapsed, then end the transmission between the first device and the second device, otherwise, perform step (C5).9.一种以连续性机械可读码为基础的数据交换系统，包含：9. A data exchange system based on continuous machine-readable codes, comprising:一第一装置，具有一显示器及一机械可读码产生单元，所述第一装置将要传送的一数据分割为多个区块，并以所述机械可读码产生单元将所述多个区块转换为相对应的多个机械可读码，且将所述多个机械可读码循环地显示于所述显示器上；以及A first device has a display and a machine-readable code generation unit, the first device divides a data to be transmitted into a plurality of blocks, and uses the machine-readable code generation unit to divide the plurality of blocks converting a block into a corresponding plurality of machine-readable codes, and cyclically displaying the plurality of machine-readable codes on the display; and一第二装置，具有一影像撷取器及一机械可读码译码单元，所述第二装置的影像撷取器连续地撷取所述第一装置的显示器所显示的所述多个机械可读码，且以所述机械可读码译码单元分别对已撷取的所述多个机械可读码进行译码，以获得所述多个区块，所述第二装置并将所述多个区块进行组合，从而获得所述数据。A second device has an image capture device and a machine-readable code decoding unit, the image capture device of the second device continuously captures the plurality of machine codes displayed on the display of the first device readable codes, and use the machine-readable code decoding unit to decode the retrieved multiple machine-readable codes to obtain the multiple blocks, the second device and the The multiple blocks are combined to obtain the data.10.根据权利要求9所述的数据交换系统，其中，所述第一装置还在每一区块中加入有标头数据，所述标头数据包含其对应区块在所述多个区块的顺序及所述多个区块的总数。10. The data exchange system according to claim 9, wherein the first device also adds header data to each block, and the header data includes its corresponding block in the plurality of blocks and the total number of the plurality of blocks.11.根据权利要求10所述的数据交换系统，其中，在对撷取的机械可读码进行解码以获得对应的区块后，所述第二装置是依据所述区块中的标头数据的顺序，以判断出未接收过的区块并进行储存。11. The data exchange system according to claim 10, wherein, after decoding the retrieved machine readable code to obtain the corresponding block, the second means is based on the header data in the block order to determine and store unreceived blocks.12.根据权利要求11所述的数据交换系统，其中，所述第二装置是依据所述区块中的标头资料的总数判断是否仍有未接收的机械可读码，若是，则所述第二装置的影像撷取器继续撷取所述第一装置的显示器所显示的所述多个机械可读码，否则结束所述第一装置及所述第二装置间的传送。12. The data exchange system according to claim 11, wherein the second device judges whether there are still unreceived machine-readable codes based on the total number of header data in the block, and if so, the The image capture device of the second device continues to capture the plurality of machine-readable codes displayed on the display of the first device, otherwise, the transmission between the first device and the second device ends.13.根据权利要求12所述的数据交换系统，其中所述第一装置还具有一影像撷取器，所述第二装置还具有一显示器，所述第二装置在已接收完所有机械可读码的后，产生一代表结束传送的机械可读码，并将其显示于其显示器上；所述第一装置的影像撷取器撷取所述结束传送的机械可读码，并对所述结束传送的机械可读码进行译码，而产生一结束传送控制信号，从而停止在其显示器上显示所述多个机械可读码。13. The data exchange system according to claim 12, wherein the first device further has an image capture device, the second device further has a display, and the second device has received all machine-readable After the code, generate a machine-readable code representing the end of transmission, and display it on its display; the image capture device of the first device captures the machine-readable code of the end of transmission, and The machine-readable codes that end the transmission are decoded to generate an end-transmission control signal to stop displaying the plurality of machine-readable codes on its display.14.根据权利要求9所述的数据交换系统，其中，所述第二装置的影像撷取器是以图框方式撷取所述第一装置显示器所显示的所述多个机械可读码。14. The data exchange system according to claim 9, wherein the image capture unit of the second device captures the plurality of machine-readable codes displayed on the display of the first device in a frame manner.15.根据权利要求9所述的数据交换系统，其中，所述机械可读码为二维条形码。15. The data exchange system according to claim 9, wherein the machine readable code is a two-dimensional barcode.16.根据权利要求9所述的数据交换系统，其中，所述第一装置为个人计算机、笔记型计算机、个人数字助理、照相手机其中之一，所述第二装置为个人计算机、笔记型计算机、个人数字助理、照相手机其中之一。16. The data exchange system according to claim 9, wherein the first device is one of a personal computer, a notebook computer, a personal digital assistant, and a camera phone, and the second device is a personal computer, a notebook computer , personal digital assistant, or camera phone.

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