Preamble data generating method and related apparatus for quick response code
In order to increase the preamble information capacity of the QR code and avoid decoding errors, a method of embedding preamble information into a standard quick response (QR) code symbol is provided to generate a first QR code symbol. The method includes generating a preamble pattern according to a user definable data; and embedding the preamble pattern into a standard position detection pattern of the standard QR code symbol to generate a first position detection pattern.
1. A method of embedding preamble information into a standard quick response (QR) code symbol, the method comprising:
generating a preamble pattern according to a user definable data; and
generating a first QR code symbol by replacing a standard position detection pattern of the standard QR code symbol with a position detection pattern including the preamble pattern, for enhancing decoding accuracy of a receiver when decoding the first QR code symbol.
2. The method of claim 1 further comprising adjusting the preamble pattern based on a data coding specification 18004 developed by International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC).
3. The method of claim 1 , wherein the user definable data comprises country information corresponding to the first QR code symbol.
4. The method of claim 1 , wherein the user definable data comprises character encoding information corresponding to the first QR code symbol.
5. The method of claim 1 , wherein the user definable data comprises company information corresponding to the first QR code symbol.
6. The method of claim 1 , wherein the user definable data is stored in a look-up table.
7. The method of claim 1 , wherein the preamble pattern is a pattern with black and white colors.
8. The method of claim 1 , wherein the preamble pattern is a pattern with grayscale colors.
9. A device for embedding preamble information into a standard quick response (QR) code symbol, the device comprising:
a pattern generating unit for generating a preamble pattern according to a user definable data; and
an embedding unit coupled to the pattern generating unit, for generating a first QR code symbol by replacing a standard position detection pattern of the standard QR code symbol with a position detection pattern including the preamble pattern, for enhancing decoding accuracy of a receiver when decoding the first QR code symbol.
10. The device of claim 9 further comprising a adjusting unit coupled to the pattern generating unit, for adjusting the preamble pattern based on a data coding specification 18004 developed by International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC).
11. The device of claim 9 , wherein the user definable data comprises country information corresponding to the first QR code symbol.
12. The device of claim 9 , wherein the user definable data comprises character encoding information corresponding to the first QR code symbol.
13. The device of claim 9 , wherein the user definable data comprises company information corresponding to the first QR code symbol.
14. The device of claim 9 , wherein the user definable data is stored in a look-up table.
15. The device of claim 9 , wherein the preamble pattern is a pattern with black and white colors.
16. The device of claim 9 , wherein the preamble pattern is a pattern with grayscale colors.