Code and reading system

• US 4,488,679 A
• Filed: 11/01/1982
• Issued: 12/18/1984
• Est. Priority Date: 11/01/1982
• Status: Expired due to Fees

• Current Assignee: Western Publishing Company, Inc.
• Original Assignee: Western Publishing Company, Inc.
• Inventors: Harris, John F. III, Bockholt, Karlheinz H.
• Primary Examiner(s): Pitts, Harold I.
• Application Number:
  US06/437,928
• Time in Patent Office: 778 Days
• Field of Search: 235/469, 235/454, 235/472
• US Class Current: 235/469
• CPC Class Codes: G06K 7/10881 constructional details of hand-held scanners
• CPC Class Codes: G06K 7/12 using a selected wavelength, e.g. to sense red marks and ignore blue marks

Abstract

A code reading system is disclosed utilizing a novel, multicolored, densely packed code read by a scanner which is placed over the code and held in place while the scanner performs its reading function. The scanner includes lighting means which are sequentially flashed on the code, as well as optical means to pick up an image received from the code during each sequential flash. The optical means directs the received image onto an imager where it is recorded. After a predetermined sequence, the received images recorded on the imager are fed to a microprocessor for storage and manipulation.

Claims

1. In combination, a code and code reading system:

said code comprising some 200 by 200 dots printed in at least five contrasting colors on a record medium in at least one data field;

said reading system comprising a scanning head adapted to be immoveably placed over and overlay said entire at least one data field, with no relative movement between said scanning head and said at least one data field as it is read;

said scanning head including activating means and means for sequentially flashing light upon said entire at least one data field to sequentially obtain data from said 200×

200 dots printed thereon in said five contrasting colors;

said sequentially obtained data being recorded on an image recording means held in said scanner head;

means to feed said recorded image data to a random access memory (RAM) of a microprocessor to form a replica of said entire data field read and the distribution of the contrasting color dots printed therein, said replica of said data field being stored in said RAM until a predetermined number of sequential scans have been completed; and

decoding means in said microprocessor whereby said replica of said field in said RAM may be manipulated to perform assigned functions.

2. The code and code reading system of claim 1, wherein said at least five contrasting colors in the code are red, blue, green, black and white.

3. The code reading system of claim 2 wherein said at least one data field in which said 200 by 200 dots are contained is approximately 1" by 1" and said record medium is paper.

4. The code reading system of claim 2 wherein said means for sequentially flashing light comprises at least one light source, adjacent a number of different colored filters mounted within said scanning head, whereby light of a color determined by one of said filters will be flashed on said code and reflected light will be recorded on said image recording means.

5. The code reading system of claim 4, wherein said image recording means is a charge coupled device image chip.

6. The code reading system of claim 2 wherein said means for sequentially flashing light comprises a plurality of different colored light emitting diodes mounted within said scanning head in position to sequentially illuminate said code.

7. The code reading system of claim 6 wherein said image recording means is a charge coupled device image chip.

8. The code reading system of claim 2 wherein said means for sequentially flashing light comprises a plurality of lights, each of said lights having a different colored filter associated therewith whereby light of a different color will be flashed on said code through a different filter each time one of said plurality of lights is sequentially activated.

9. The code reading system of claim 8 wherein said image recording means is a charge coupled device image chip.

10. The code reading system of claim 2 wherein said scanning head includes a rotatable filter disc for filtering the light recorded on said image recording means.

11. The code reading system of claim 10 wherein said filter disc is composed of a plurality of different colored sections and said disc is rotatable by an electric motor mounted within said scanning head.

12. The code reading system of claim 11 wherein said means for sequentially flashing light in said scanning head is a single light source adjacent a single lens, said lens focusing light reflected from said code after said code is illuminated by said single light source through said filter disc and onto said image recording means.

13. The code reading system of claim 12 wherein said image recording means is a charge coupled device image chip.

14. The code reading system of claim 12 further including a tiltable mirror mounted in said scanning head in a position whereby it receives light from said single light source to reflect said light onto said code, and to further reflect light from said code onto said lens.

15. The code reading system of claim 14 wherein said mirror is pivoted about an axis by an electric motor held in said scanning head, and said image recording means is a charge coupled device image chip having a linear array of active elements to record said reflected image.