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

• US 20070241194A1
• Filed: 03/27/2007
• Published: 10/18/2007
• Est. Priority Date: 04/17/2006
• Status: Abandoned Application

• Current Assignee: Sunplus Technology Co., Ltd
• Original Assignee: Sunplus Technology Co., Ltd
• Inventors: Lin, Chia-Ching, Kuo, Li-Ying
• Application Number:
  US11/727,432
• Publication Number:
  US 20070241194A1
• Time in Patent Office: Days
• US Class Current: 235/462.10
• CPC Class Codes: G06F 13/387 for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system
• CPC Class Codes: G06K 7/1095 the scanner comprising adaptations for scanning a record carrier that is displayed on a display-screen or the like

Abstract

A data exchange method and system based on continuous machine-readable code, which transfers data between a first device and a second device. The first device has a display, and the second device has an image extractor. The first device divides data to be transferred into a plurality of blocks and converts the blocks into corresponding machine-readable codes. The second device uses the image extractor to continuously capture the machine-readable codes displayed on the display of the first device, respectively decodes the machine-readable codes to thereby obtain the blocks, and concatenates the blocks to thus obtain the data.

Claims

1. A data exchange method based on continuous machine-readable code, which transfers data between a first device with a display and a second device with an image extractor, the method comprising the steps of:

(A) using the first device to segment data to be transferred into a plurality of blocks;

(B) using the first device to convert the blocks into machine-readable codes correspondingly and to cyclically display the machine-readable codes on the display;

(C) using the image extractor of the second device to continuously capture the machine-readable codes displayed on the display of the first device and respectively decode the machine-readable codes captured to thereby obtain the blocks; and

(D) using the second device to concatenate the blocks to obtain the data.

2. The method as claimed in claim 1, wherein each of the blocks in step (B) has a header including a respective order and a total block number.

3. The method as claimed in claim 2, wherein step (C) further comprises:

(C1) using the image extractor of the second device to capture a machine-readable code currently displayed on the display of the first device;

(C2) decoding the machine-readable code captured to thereby obtain a respective block, and determining if the respective block is received in accordance with the respective order of the header of the respective block;

(C3) storing the respective block when step (C2) considers that the respective block is not received, and determining if a next machine-readable code is to be received in accordance with the total block number; and

(C4) ending the transfer between the first device and the second device when step (C3) considers that there is no more machine-readable code to be received, and otherwise executing step (C1).

4. The method as claimed in claim 3, further comprising the steps between step (C) and step (D) as the first device further comprises an image extractor and the second device further comprises a display:

(E) using the second device to generate an indicative machine-readable code and to display the indicative machine-readable code on the display of the second device; and

(F) using the image extractor of the first device to capture the indicative machine-readable code, and decoding the indicative machine-readable code to accordingly generate a transfer ending control signal to stop displaying the machine-readable codes on the display of the first device.

5. The method as claimed in claim 1, wherein the image extractor of the second device captures the machine-readable codes displayed on the display of the first device in a frame by frame manner.

6. The method as claimed in claim 1, wherein the machine-readable codes are a two-dimensional barcode.

7. The method as claimed in claim 1, wherein the first device is one selected from a PC, a notebook, a PDA and a camera cellphone, and the second device is one selected from a PC, a notebook, a PDA and a camera cellphone.

8. The method as claimed in claim 3, further comprising the step between step (C) and step (D):

(G) using the second device to generate an indicative signal for ending the transfer and to quit the image extractor of capturing the machine-readable codes displayed on the display of the first device.

9. The method as claimed in claim 8, wherein the indicative signal is a prompt voice.

10. The method as claimed in claim 2, wherein step (C) further comprises:

(C5) using the image extractor of the second device to capture a machine-readable code currently displayed on the display of the first device;

(C6) decoding the machine-readable code captured to thereby obtain a respective block, and in accordance with the respective order of the header of the respective block to determine if the respective block is received;

(C7) storing the respective block when step (C6) considers that the respective block is not received, and further determining if a predetermined time is reached; and

(C8) ending the transfer between the first device and the second device when step (C7) decides that the predetermined time is reached, and otherwise executing step (C5).

11. A data exchange system based on continuous machine-readable code, comprising:

a first device having a display and a machine-readable code generator, which segments data to be transferred into a plurality of blocks, uses the machine-readable code generator to convert the blocks into machine-readable codes correspondingly, and cyclically displays the machine-readable codes on the display; and

a second device having an image extractor and a machine-readable code decoder, which uses the image extractor to continuously capture the machine-readable codes displayed on the display of the first device, uses the machine-readable code decoder to respectively decode the machine-readable codes captured to thereby obtain the blocks, and concatenates the blocks to thus obtain the data.

12. The system as claimed in claim 11, wherein each of the blocks has a header containing a respective order and a total block number.

13. The system as claimed in claim 12, wherein the second device determines which the blocks are not received for being stored based on the respective orders of the headers from the blocks obtained by decoding the machine-readable codes.

14. The system as claimed in claim 13, wherein the second device determines whether a next machine-readable code is to be received based on the total block number and captures the next machine-readable code when received in that manner, and otherwise the transfer between the first device and the second device is ended.

15. The system as claimed in claim 14, wherein the first device further comprises an image extractor and the second device further comprises a display, such that the second device generates an indicative machine-readable code when the machine-readable codes are completely received and displays the indicative machine-readable code on the display of the second device, and the image extractor of the first device captures and decodes the indicative machine-readable code to accordingly generate a transfer ending control signal to stop displaying the machine-readable codes on the display of the first device.

16. The system as claimed in claim 11, wherein the image extractor of the second device captures the machine-readable codes displayed on the display of the first device in a frame by frame manner.

17. The system as claimed in claim 11, wherein the machine-readable codes are a two-dimensional barcode.

18. The system as claimed in claim 11, wherein the first device is one selected from a PC, a notebook, a PDA and a camera cellphone, and the second device is one selected from a PC, a notebook, a PDA and a camera cellphone.

19. The system as claimed in claim 13, wherein the second device determines whether a next machine-readable code is to be received based on the total block number and further determines whether a predetermined time is reached when the next machine-readable code to be received is determined, and finally quits receiving the machine-readable codes when the predetermined time is reached.