دانلود برنامه QR Factory 2.9.16 برای مک حجم: ۱۴,۲۰ مگابایت نیازمندی سیستم: OS X 10.9 به بعد و پردازنده 64Bit. Structure of QR Codes. QR code (Quick response code) is a matrix 2D code for high-speed reading developed by DENSO WAVE in 1994. It was registered to the ITS standard of the AIMI in 1997 and to ISO/IEC standards in 2000. In addition, Micro QR code was standardized as JIS-X-0510 in 2004.
Structure of QR Codes
QR code (Quick response code) is a matrix 2D code for high-speed reading developed by DENSO WAVE in 1994. It was registered to the ITS standard of the AIMI in 1997 and to ISO/IEC standards in 2000.
In addition, Micro QR code was standardized as JIS-X-0510 in 2004.
Specifications of QR Codes
The smallest element (black or white square) of the QR code is called 'a module'. A QR code is composed of a combination of black and white modules, position detection patterns, timing patterns,
format information that contains error correction level and mask numbers, data area and error correction code
(Reed-Solomon code).
| Specifications | ||
|---|---|---|
| Smallest symbol size | 21 x 21 modules | |
| Largest symbol size | 177 x 177 modules | |
| Maximum data capacity | Numeric | 7089 characters |
| Alphanumeric | 4296 characters | |
| Kanji | 1817 characters |
Position detection patterns
The position detection patterns are arranged at three corners of the QR codes. (Micro QR has one.) The position of QR code is detected with the position detection patterns that allow high-speed reading.
From any position of A, B and C, the rate of black and white modules is 1:1:3:1:1 to specify the rotation angle/ displacement of the code.
It can be read from any direction, which significantly improves work efficiency.
Alignment pattern
The alignment pattern is used for position detection when there is displacement of modules due to distortion.
It is applied to model 2.
Margin
The margin is a blank area around the QR code. Model 1 and 2 require a margin of four modules and Micro QR code requires of two modules.
Timing pattern
White and black modules are alternately arranged to determine the coordinate. Securecrt for windows.
Format information
It contains the error correction rate and mask pattern of the code. The format information is read first when the code is decoded.
Error-correcting code (Reed-Solomon code)
Reed-Solomon code is applied to restore the data when a part of QR code is missing or damaged. The restoration rate varies on 4 different error correcting levels.
Spot
Stain
Data missing
| Error correcting level | Damaged area to entire code size |
|---|---|
| L | 7% |
| M | 15% |
| Q | 25% |
| H | 30% |
Arrangement of error-correcting code
Qr Factory 2 9 16 X 9
Data and error correcting code are arranged as shown below. (Sample: Version 2 of Model 2 with level M) A mask is applied to the code to prevent the same pattern with the position detection pattern from appearing.
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Thank you for using our Mac software library. Sorry, but QR Factory - Professional QR Code Creator for Mac does not have a direct download. Image plus 1 2. Use the link below and download the required application from the App Store.
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