| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-dimensional code capable of storing a large capacity of information, its reading method, a program, and a computer readable record medium. SOLUTION: Circumferential sides of a two-dimensional matrix 2 are surrounded with solid lines a-d, heading lines R11 and R12 are disposed outside a rectangular corner D, heading lines R13 and R14 are disposed outsides rectangular corners B and C respectively, heading lines R21-R23 and R31-R33 are disposed outsides the sides a and b, heading lines R41-R43 and R51-R53 are disposed insides the sides c and d. The heading lines R21-R23 and R41-R43 are disposed at a same pitch P1, and the heading lines R31-R33 and R51-R53 are disposed at a same pitch P2. Data density information and positioning information are obtained in decoding based on the heading lines. |
