Apparatus and method for storing and reading data

• US 5,451,764 A
• Filed: 01/04/1993
• Issued: 09/19/1995
• Est. Priority Date: 01/04/1993
• Status: Expired due to Fees

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Houghton, Richard A., Ruzic, Steven L.
• Primary Examiner(s): PITTS, HAROLD I
• Application Number:
  US08/000,054
• Time in Patent Office: 988 Days
• Field of Search: 235/454, 235/494
• US Class Current: 235/494
• CPC Class Codes: G06K 19/06037 multi-dimensional coding

Abstract

An apparatus (38) for storing data includes a storage media (14). Also included are a number of vertical bars (40), each providing a vertical edge (50) for defining columns (44), and a number of horizontal bars (42), each providing a horizontal edge (52) for defining rows (46). The vertical bars (40) and the horizontal bars (42) are printed on storage media (14). A number of data blocks (48) are formed, each data block (48) located in a row (46), column (44) position.

Claims

1. Apparatus for storing data, comprising:

a storage media having a printable surface on which data is to be stored;

a plurality of horizontally spaced, vertical registration bars, each having a width, the surface of said storage media, each of said vertical registration bars providing a vertical edge defining a boundary of a corresponding column so as to provide a plurality of columns;

a plurality of vertically spaced, horizontal registration bars, each having a width, printed on the surface of said storage media, each of said horizontal registration bars being defined by a plurality of separate horizontal sectors arranged in alignment with each other and respectively disposed within a different column of said plurality of columns, each of said horizontal registration bars providing a horizontal edge defining a boundary of a corresponding row so as to provide a plurality of rows said vertical and horizontal bars being non-intersecting; and

a plurality of data blocks on the surface of said storage media, each of said data blocks being disposed within an area on the surface of said storage media at a respective row/column position;

each data block being representative of at least one bit of binary data said bit of binary data being printed to represent to represent one of "1" and "0", or being blank to represent the other of "1" and "0".

2. The apparatus of claim 1, wherein each of said data blocks has a known horizontal distance from an associated vertical edge and a known vertical distance from an associated horizontal edge.

3. The apparatus of claim 1, wherein each data block has a plurality of data units, each data unit representing a bit of binary data.

4. The apparatus of claim 1 and further comprising an optical scanner with a prescribed resolving ability wherein dimensions of each of said plurality of vertical bars, horizontal bars and data bits is larger than said prescribed resolving ability of said optical scanner.

5. The apparatus of claim 4, wherein said dimensions are at least three times said prescribed resolving ability.

6. The apparatus of claim 3, wherein said each data unit comprises a plurality of pixels respectively representing regions of said data unit, each of said pixels having a pixel value of either "1" or "0" wherein any printed pixels are representative of one of "1" and "0" and any blank pixels are representative of the other of "1" and "0".

7. The apparatus of claim 1, wherein each data block is at least partially positioned in a first horizontal channel located below a horizontal bar.

8. The apparatus of claim 1, wherein each data block is positioned in a first horizontal channel located below a horizontal bar and a second horizontal channel including said horizontal bar.

9. The apparatus of claim 1 wherein said storage media is paper.

10. The apparatus of claim 1, wherein each of said plurality of vertical bars is parallel to every other of said plurality of vertical bars, and each of said plurality of horizontal bars is parallel to every other of said plurality of horizontal bars.

11. The apparatus of claim 1 wherein the printable surface of said storage media is scanned by a scanner system comprising:

a scanner for scanning the printable surface of said storage media and converting said plurality of data blocks into pixel data from a plurality of pixels respectively representing regions of each data block, each of said pixels having a pixel data value of either "1" or "0" wherein any printed pixels are representative of one of "1" and "0" and any blank pixels are representative of the other of "1" and "0"; and

an interpreter for converting said pixel data to said at least one bit of binary data for each of said plurality of data blocks.

12. The apparatus of claim 11 wherein said interpreter further comprises:

a processor for executing instructions for converting said pixel data to said at least one bit of binary data; and

a program memory programmed for instructing said processor to

locate a vertical edge of a column,

locate a horizontal edge of a row, and

locate a data block a predetermined vertical distance from said horizontal edge and a predetermined horizontal distance from said vertical edge.