Fixed mount imager using optical module for reading one or two-dimensional symbology data

• US 5,659,431 A
• Filed: 10/23/1995
• Issued: 08/19/1997
• Est. Priority Date: 10/23/1995
• Status: Expired due to Term

• Current Assignee: Intermec IP Corporation (Honeywell International Inc.)
• Original Assignee: Intermec Corporation (Honeywell International Inc.)
• Inventors: Ackley, H. Sprague
• Primary Examiner(s): Epps, Georgia Y.
• Assistant Examiner(s): MACK, RICKY LEVERN
• Application Number:
  US08/546,778
• Time in Patent Office: 666 Days
• Field of Search: 359/798, 359/799, 359/800, 359/801, 235/462, 235/467, 235/472, 235/439, 235/454, 250/569
• US Class Current: 359/798
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence

Abstract

A device is provided for reading information from a media containing randomly located encoded data in the form of a one or two-dimensional symbology is provided. The device comprises a housing having a slot capable of receiving the media therein to an axial extent thereof. The media is illuminated by a light source disposed within the housing. The light reflected from the media is received and converted into pixel data that includes data representative of the symbology. Thereafter, the symbology data is discriminated from among the pixel data, and the discriminated symbology data is converted into readable information signals. Alternatively, the device may comprise a housing having a window and a light source disposed within the housing capable of providing illumination through the window onto the media when positioned in proximity to the window. The light reflected from the media is transmitted through the window into the housing, where it is converted into pixel data that includes data representative of the two-dimensional symbology. The window may be disposed on a side of the housing facing horizontally, or may be disposed on an upper or lower surface facing vertically, or may be disposed at any other angle to facilitate reading of the symbology.

Claims

1. A device for reading information from a card containing randomly located and oriented encoded data in the form of a one or two-dimensional symbology, comprising:

a housing having a slot adapted to receive said card therein to an axial extent thereof;

illuminating means disposed within said housing for illuminating a major portion of a surface of said card which includes and randomly located and oriented symbology as a minor portion thereof; and

optical means for receiving light reflected from said surface of said card and converting said light into pixel data that includes data representative of said randomly located and oriented symbology, said optical means including means for discriminating said symbology data from among said pixel data.

2. The device of claim 1, wherein said optical means further comprises means for converting said discriminated symbology data into information signals.

3. The device of claim 1, further comprising a position sensor disposed within said slot at said axial extent, said position sensor detecting presence of said card at said axial extent and producing an associated signal.

4. The device of claim 3, wherein said illuminating means is triggered by said signal from said position sensor.

5. The device of claim 1, wherein said illuminating means further comprises at least one light emitting diode.

6. The device of claim 1, wherein said optical means further comprises a charge coupled device.

7. The device of claim 1, wherein said optical means further comprises a lens.

8. The device of claim 1, wherein said optical means further comprises an optical module having a charge coupled device adapted to receive light reflected from said card.

9. A device for reading a one or two-dimensional symbology randomly disposed on a media, comprising:

a fixed housing having at least one window therethrough;

a light source disposed within said housing adapted to provide illumination through said window onto a major portion of a surface of said media when positioned in proximity to said window such that said major portion of said surface includes said randomly disposed symbology as a minor portion thereof; and

at least one optical means within said housing for receiving light reflected from said surface of said media respectively through said at least one window and converting said light into pixel data that includes data representative of said randomly disposed symbology.

13. The device of claim 9, wherein said at least one optical means further comprises a charge coupled device.

14. The device of claim 9, wherein said light source further comprises at least one light emitting diode.

15. The device of claim 9, wherein said at least one optical means further comprises an optical module having a charge coupled device adapted to receive light reflected from said media.

16. The device of claim 9, wherein said at least one window is disposed on a horizontally facing surface of said housing.

17. The device of claim 9, wherein said at least one window is disposed on a vertically facing surface of said housing.

10. A device for reading a one or two-dimensional symbology disposed on a media, comprising:

a fixed housing having at least one window therethrough;

a light source disposed within said housing adapted to provide illumination through said window onto said media when positioned in proximity to said window; and

at least one optical means within said housing for receiving light reflected from said media respectively through said at least one window and converting said light into pixel data that includes data representative of said symbology, wherein said at least one optical means further comprises means for discriminating said symbology data from among said pixel data.

11. The device of claim 10, further comprising means for alerting a user of said device upon successful completion of discrimination of said symbology data.

12. A device for reading a one or two-dimensional symbology disposed on a media, comprising:

a fixed housing having at least one window therethrough;

a light source disposed within said housing adapted to provide illumination through said window onto said media when positioned in proximity to said window;

at least one optical means within said housing for receiving light reflected from said media respectively through said at least one window and converting said light into pixel data that includes data representative of said symbology; and

means for triggering said light source upon said media being brought into proximity with said at least one window.

18. A method for reading a one or two-dimensional symbology randomly disposed on a medium, comprising:

illuminating a major portion of a surface of said medium from a light source disposed within a housing through at least one opening in said housing, said major portion of said surface including said randomly disposed symbology as a minor portion thereof;

receiving light reflected from said surface of said medium through said opening and converting said light into pixel data that includes data representative of said symbology; and

discriminating said randomly disposed symbology data from among said pixel data.

19. The method of claim 18, further comprising the step of detecting presence of said medium and producing an associated signal.

20. The method of claim 18, further comprising the step of alerting a user upon completion of said converting step.

21. A device for reading a one or two-dimensional symbology randomly disposed on a media, comprising:

a fixed housing having at least one window therethrough;

a light source disposed within said housing adapted to provide light through said window onto a major portion of a surface of said media when positioned in proximity to said window, said major portion including said randomly disposed symbology as a minor portion thereof; and

at least one optical sensor disposed within said housing and being adapted to receive light reflected from said surface of said media respectively through said at least one window and convert said light into pixel data that includes data representative of said symbology.

22. The device of claim 21, wherein said at least one optical sensor further comprises means for discriminating said data representative of said symbology from among said pixel data.

23. A device for reading information from a card containing randomly located and oriented encoded data in the form of a one or two-dimensional symbology, comprising:

a housing having a slot adapted to receive said card therein to an axial extent thereof;

a light source disposed within said housing and adapted to illuminate a major portion of a surface of said card including said randomly located and oriented symbology as a minor portion thereof; and

an optical sensor disposed within said housing and adapted to receive light reflected from said surface of said card, convert said light into pixel data that includes data representative of said randomly located and oriented symbology, and discriminate said symbology data from among said pixel data.