Information input/output method using dot pattern

• US 8,031,375 B2
• Filed: 04/28/2005
• Issued: 10/04/2011
• Est. Priority Date: 04/28/2005
• Status: Expired due to Fees

• Current Assignee: Kenji Yoshida
• Original Assignee: Kenji Yoshida
• Inventors: Yoshida, Kenji
• Primary Examiner(s): Baker; Charlotte M
• Application Number:
  US11/912,597
• Publication Number:
  US 20090066977A1
• Time in Patent Office: 2,350 Days
• Field of Search: 358/3.28, 358/1.8, 382/190, 178/18.01, 178/18.09, 369/59.23
• US Class Current: 358/3.28
• CPC Class Codes: G06K 19/06037 multi-dimensional coding
• CPC Class Codes: G06K 2019/06234 miniature-code
• CPC Class Codes: G06K 7/1417 2D bar codes

Abstract

It is an object of the present invention to provide an information input/output method that is capable of imparting different functions to dots of a dot pattern displayed on a printed matter, thereby, at the time of providing information from the dot pattern, recognizing directivity and speedily providing information and that is capable of checking an error relative to a dot layout state, and further, that is capable of enhancing security. Therefore, according to the present invention, the information input/output method is provided, and includes: defining as a block a rectangular area of a square or a rectangle, of a medium face such as a printed matter; while a straight line in a vertical direction and a horizontal direction configuring a frame of the block is defined as a standard grid line, providing a virtual reference grid point by predetermined interval on the reference grid line; laying out a reference grid point dot on a virtual reference grid point; connecting the virtual reference grid points to each other and defining a straight line parallel to the reference grid line as a grid line; defining a cross point between the grid lines as a virtual grid point; generating a dot pattern obtained by laying out one or a plurality of information dots, respectively, having a distance and a direction around the virtual grid point; reading such dot pattern as image information by optical reader means; numerically valuing the dot pattern; and reading and outputting information that corresponds to the numerically valued information from storage means.

Claims

1. An information input/output method using dot patterns, said method comprising:

defining as a block a rectangular area of a square or a rectangle, of a medium surface such as a printed matter;

while straight lines in a vertical direction and a horizontal direction configuring sides of the block each are defined as a reference grid line, providing virtual reference grid points at predetermined intervals on the reference grid lines;

placing reference grid point dots on respective virtual reference grid points;

defining straight lines that connect the virtual reference grid points to each other and are parallel to the reference grid lines as grid lines;

defining a point of intersection of the grid lines as a virtual grid point;

generating a dot pattern by arranging one or a plurality of information dots, each of which has a distance and a direction around the virtual grid point;

reading the dot pattern as image information by an optical reader;

converting the dot pattern into a numerical value; and

reading and outputting information that corresponds to the numerical value from storage.

2. The information input/output method using dot patterns, as set forth in claim 1, wherein, in the block, assuming an oblique grid line connecting virtual reference grid points in a further oblique direction, a point of intersection of grid lines is also defined as a virtual grid point (second virtual grid point);

and one or a plurality of dots, each of which has a distance and a direction, are placed around the virtual grid point.

3. The information input/output method using dot patterns, as set forth in claim 1 or 2, wherein the dot pattern provides a significance of information in accordance with whether or not dots are placed around the virtual grid point.

4. The information input/output method using dot patterns, as set forth in claim 1 or 2, wherein a key dot defining the direction of the block is placed at a position that is shifted from at least one virtual reference grid point on the reference grid line configuring the block.

5. The information input/output method using dot patterns, as set forth in claim 1 or 2, wherein, an information dot at predetermined position is defined as a key dot in the block, and information of the information dot placed in a respective rectangular area by rotating the rectangular area by 90 degrees around the block center is defined by a direction or a distance that excludes a direction required to define the key dot.

6. The information input/output method using dot patterns, as set forth in claim 1 or 2, wherein, information of an information dot in the block is defined by arbitrarily limiting the position of the information dot in the block by a distance and a direction thereof from the virtual grid point for each information dot.

7. A dot pattern image data, comprising:

a predetermined number of horizontal reference grid point dots placed at a predetermined interval in a horizontal direction;

a predetermined number of vertical reference grid point dots placed in a vertical direction from the horizontal reference grid point dot that is positioned at an end point of the horizontal reference grid point dots; and

an information dot in which information is defined by a distance and a direction from a starting point that is an intersection of a vertical direction reference grid line virtually set from the horizontal reference grid point dot and a horizontal direction reference grid line virtually set in a horizontal direction from the vertical direction reference grid point dot.

8. The dot pattern image data according to claim 7, wherein at least one of the horizontal reference grid point dots or vertical reference grid point dots is placed by being shifted in a predetermined direction as a key dot that indicates a direction.

9. The dot pattern image data according to claim 7, wherein a block is a collection of the information dot in which a code value and/or a coordinate value is defined.

10. The dot pattern image data according to claim 9, wherein at least two or more of the block abut one above the other and/or left and right.

11. A dot pattern image data, comprising;

horizontal reference grid point dots placed in a horizontal direction at a predetermined interval;

a predetermined number of vertical reference grid point dots placed in a vertical direction starting from the horizontal reference grid point dot positioned at an end point of the horizontal reference grid point dots and at each predetermined number of horizontal reference grid point dots;

a horizontal reference grid point dot additionally placed in a horizontal direction at a predetermined interval at each predetermined number of the vertical reference grid point dots placed vertically from the horizontal reference grid point dot positioned at the end point; and

an information dot in which information is defined by a distance and a direction from a starting point that is an intersection of a vertical direction reference grid line virtually set as connecting the corresponding horizontal reference grid point dots and a horizontal direction reference grid line virtually set in a horizontal direction as connecting the corresponding vertical reference grid point dots, wherein a region surrounded by the vertical reference grid point dots and the horizontal reference grid point dots is a block in which a code value and/or a coordinate value is defined.