Apparatus for reading information marks

• US 4,924,088 A
• Filed: 02/28/1989
• Issued: 05/08/1990
• Est. Priority Date: 02/28/1989
• Status: Expired due to Fees

• Current Assignee: Carman, George, Hiatt, Mark, LaChapelle, Joseph G.
• Original Assignee: Carman, George, Hiatt, Mark, LaChapelle, Joseph G.
• Inventors: Hiatt, Mark, LaChapelle, Joseph G., Carman, George
• Primary Examiner(s): Berman, Jack I.
• Application Number:
  US07/317,529
• Time in Patent Office: 434 Days
• Field of Search: 250/271, 235/468, 235/469, 209/576, 209/577, 209/578, 209/580, 209/583
• US Class Current: 250/271
• CPC Class Codes: G06K 7/016 Synchronisation of sensing process
• CPC Class Codes: G06K 7/10861 sensing of data fields affixed to objects or articles, e.g. coded labels postal sorting B07C3/14, conveying articles B65G47/48
• CPC Class Codes: G06K 7/12 using a selected wavelength, e.g. to sense red marks and ignore blue marks

Abstract

An apparatus for reading information marks comprising a strobe light activating or reflecting information marks manually placed on objects or wood products. A camera is used for reading the marks. One or more detectors are used to recognize marks and color. A central processing unit is used to process, solve and interpret character and color recognition. A photo-electric eye or a signal from a control device is used to time the strobe and detector. The information contained in the marks is fed directly to the control system and may be used to generate reports.

Claims

1. An apparatus for reading information marks comprising:

at least one strobe light to activate or reflect marks on a product where said strobe light is on for a short time at high intensity such that the movement of the product does not affect the reading of the marks;

at least one camera for reading marks;

a means to time the strobe light such that an object is positioned under said strobe light and said camera;

means to process, solve and interpret character and color recognition; and

means to report the solution to other control system devices.

2. The apparatus of claim 1 where said means to time the strobe light is a photo-electric eye.

3. The apparatus of claim 1 where said means to time the strobe light is a signal from a control device.

4. The apparatus of claim 1 where said camera is an RGB color camera.

5. The apparatus of claim 1 where said means to process, solve and interpret character and color recognition is a central processing unit.

6. The apparatus of claim 1 additionally comprising means to transfer the recognized marks to reporting system devices.

7. The apparatus of claim 1 additionally comprising:

a monitor for reviewing the marks as read by said camera.

8. An apparatus for reading information marks comprising:

two strobe lights operating simultaneously to activate fluorescent marks on lumber where said strobe lights are on for a short time, such that the movement of the lumber does not affect the reading of the fluorescent marks;

two cameras for reading fluorescent marks where one camera responds to red and orange fluorescents and the other camera responds to green and blue fluorescents;

a means to time said strobe lights such that a piece of lumber is positioned under said strobe lights and said cameras;

means to transfer the fluorescent marks as read by said camera to other devices;

means to process, solve and interpret character and color recognition; and

means to transfer the solution to other control system devices.

9. The apparatus of claim 8 where said means to time the strobe light is a signal from a control device.

10. The apparatus of claim 8 additionally comprising means to transfer the recognized marks to a reporting system device.

11. The apparatus of claim 8 additionally comprising a monitor for reviewing the fluorescent marks as read by said camera.

12. The apparatus of claim 8 where said means to process, solve and interpret character and color recognition comprises a central processing unit which compares a signal ratio from each camera to detect color, and uses one of the images for character recognition.

13. An apparatus for reading information marks comprising:

at least one strobe light to fluoresce marks on wood where said strobe light is on for a short time at high intensity such that the movement of the wood does not affect the reading of the marks;

at least one camera for reading fluorescent marks;

a means to time the strobe light such that a piece of wood is positioned under said strobe light and said camera;

means to process, solve and interpret character and color recognition; and

means to transfer the solution to other control system devices.

14. The apparatus of claim 13 where said means to time the strobe light is a photo-electric eye.

15. The apparatus of claim 13 where said means to time the strobe light is a signal from a control device.

16. The apparatus of claim 13 where said camera is an RGB color camera.

17. The apparatus of claim 13 where said means to process, solve and interpret character and color recognition is a central processing unit.

18. The apparatus of claim 13 additionally comprising means to transfer the recognized marks to reporting system devices.

19. The apparatus of claim 13 additionally comprising:

a monitor for reviewing the marks as read by said camera.

20. The strobe of claim 13 where said strobe produces the energy per area illuminated per stand off distance is a minimum of 25 joules per illuminated area in square meters per meters of stand off distance.

21. The camera and strobe of claim 13 where said camera aperture is open for a maximum of 100 milliseconds and said strobe flashes a maximum of 1 millisecond.

22. The strobe of claim 13 where said strobe is a xenon flash lamp.

23. The apparatus of claim 16 where said RGB color camera detects color by means of separating colors into red, green and blue such that a signal ratio algorithm detects colors.

24. The method for detecting and interpreting marks comprising the following steps:

1. Placing fluorescent marks on an object;

2. Flashing a strobe light on said marks;

3. Detecting said marks;

4. Processing, solving and interpreting said marks; and

5. Communicating said solution to other devices.

25. The method of claim 24 where the color of said fluorescent marks is detected and interpreted.