QR Code Standardization | QR Code.com (via Mowser)

Open 2D Code

For 2D Code to become widely used, it is first necessary for QR Code specification to be clearly defined and made public. In addition, QR Code must be freely usable by users.

The background behind the popularity of bar codes, is specification disclosure. Today, there are very few bar codes with closed specifications or strict patent protection.

QR Code is open in the sense that the specification of QR Code is disclosed and that the patent right owned by Denso Wave is not exercised.

History of QR Code Standardization

QR Code is standardized as below. This shows that QR Code has been accepted internationally, ensuring its widespread acceptance not only domestically, but also overseas.

QR Code Standardization

October, 1997 Approved as AIM International (Automatic Identification Manufacturers International) standard (ISS - QR Code)

March, 1998 Approved as JEIDA (Japanese Electronic Industry Development Association) standard (JEIDA-55)

January, 1999 Approved as JIS (Japanese Industrial Standards) standard (JIS X 0510)

June, 2000 Approved as ISO international standard (ISO/IEC18004)

November, 2004 Micro QR Code is Approved as JIS (Japanese Industrial Standards) standard (JIS X 0510)

QR Code Outline Specification

Symbol size 21 × 21 - 177 × 177 modules (size grows by 4 modules/side)

Type & Amount of Data
(Mixed use is possible.) Numeric Max. 7,089 characters

Alphanumeric Max. 4,296 characters

8-bit bytes (binary) Max. 2,953 characters

Kanji Max. 1,817 characters

Error correction
(data restoration) Level L Approx. 7% of codewords can be restored.

Level M Approx. 15% of codewords can be restored.

Level Q Approx. 25% of codewords can be restored.

Level H Approx. 30% of codewords can be restored.

Structured append Max. 16 symbols (printing in a narrow area etc.)

Obtaining QR Code Specification

QR Code is established as an ISO (ISO/IEC18004) standard. QR Code specification can, therefore, be purchased from this organization.

Go to "Search and Standards" and search by ISO Number for 18004.

http://www.iso.ch/iso/en/prods-services/ISOstore/store.html

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