Title:
TWO-DIMENSIONAL CODE, TWO-DIMENSIONAL CODE MAKING METHOD, TWO-DIMENSIONAL CODE DECODING METHOD, DEVICE FOR EXECUTING THESE METHODS, PROGRAM FOR EXECUTING THESE METHODS BY COMPUTER AND COMPUTER READABLE RECORDING MEDIUM FOR RECORDING ITS PROGRAM
Document Type and Number:
Japanese Patent JP3923796
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a making method of a color two-dimensional code capable of increasing a recordable data quantity, and readable without depending on a characteristic of a scanner.
SOLUTION: This purpose can be attained by a color two-dimensional code making method having a step of selecting a combination of one color according to the gradation number expressible by a minimum dot of a printer for printing a two-dimensional color code from a combination of a plurality of predetermined colors or the plurality of colors including the concentration or luminance, a step of blocking an information bit train with every n bit according to the gradation number expressible by the minimum bit of the printer for printing the two-dimensional color code, a step of making respective blocks correspond to respective cells, a step of selecting a color corresponding to a value for expressing the n bit of the blocks from the combination of the one color, a step of printing the respective cells by a corresponding color, a step of printing information for discriminating the combination of the one color, and a step of printing the combination of the one color.
Inventors:
Sadao Takahashi
Application Number:
JP2001377751A
Publication Date:
June 06, 2007
Filing Date:
December 11, 2001
Export Citation:
Assignee:
株式会社リコー
International Classes:
G06K19/06; G06K1/12; G06K7/12; (IPC1-7): G06K19/06; G06K1/12; G06K7/12
Domestic Patent References:
| JP2001319200A | ||||
| JP3018465U | ||||
| JP11502654A |
Attorney, Agent or Firm:
Tadahiko Ito