Hand-held scanner apparatus having visual scan-region position feedback system

• US 6,268,598 B1
• Filed: 10/14/1999
• Issued: 07/31/2001
• Est. Priority Date: 10/14/1999
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett Packard Company (HP Inc.)
• Inventors: Berg, Thomas E, Sims, David J, Dow, James C
• Primary Examiner(s): Allen, Stephone B.
• Application Number:
  US09/417,602
• Time in Patent Office: 656 Days
• Field of Search: 250/208.1, 358/473, 358/474, 358/493, 358/494, 235/462.45, 235/472.01
• US Class Current: 250/208.1
• CPC Class Codes: H04N 1/107 with manual scanning
• CPC Class Codes: H04N 2201/0452 Indicating the scanned area, e.g. by projecting light marks onto the medium

Abstract

Scanner apparatus having a visual scan-region position feedback system according to the present invention may comprise a body having at least one elongate opening therein that extends along a transverse axis so that the elongate opening encompasses a scan region on an object during a scanning operation. An image sensing system mounted within the body of the scanner is optically coupled to the elongate opening therein and receives image light reflected by the scan region. A first light source mounted to the body produces a first light beam that is generally aligned with the elongate opening in the body and that extends outwardly from the body in a first direction along the transverse axis. The first light beam is incident on at least a portion of the object being scanned during the scanning operation and provides a visual indication of a position of the scan region with respect to the object being scanned.

Claims

1. Scanner apparatus having a visual scan-region position feedback system, comprising:

a body having at least one elongate opening therein that extends along a transverse axis, the elongate opening encompassing a scan region on an object during a scanning operation;

an image sensing system mounted within said body and optically coupled to the elongate opening therein so that image light reflected by the scan region is incident on said image sensing system; and

a first light source mounted to said body, said first light source producing a first light beam that is generally aligned with the elongate opening in said body and that extends in a first direction along the transverse axis, the first light beam being incident on at least a portion of the object being scanned during the scanning operation to provide a visual indication of a position of the scan region with respect to the object being scanned.

2. The scanner apparatus of claim 1, wherein said first light source is mounted within said body and wherein said body is provided with a first aperture therein, said first light beam passing through said first aperture.

3. The scanner apparatus of claim 2, further comprising a first lens positioned between said first light source and said first aperture, said first lens collimating light produced by said first light source to form said first light beam.

4. The scanner apparatus of claim 3, further comprising a first light pipe positioned between said first light source and said first lens.

5. The scanner apparatus of claim 3, wherein said first light source comprises a light emitting diode.

6. The scanner apparatus of claim 3, wherein said first light source comprises an incandescent lamp.

7. The scanner apparatus of claim 1, wherein said first light source produces a second light beam that is generally aligned with the elongate opening in said body and that extends in a second direction along the transverse axis, the second direction along the transverse axis being opposite the first direction along the transverse axis, the second light beam being incident on at least a portion of the object being scanned during the scanning operation.

8. The scanner apparatus of claim 7, wherein said body is provided with a second aperture therein, said second light beam passing through said second aperture.

9. The scanner apparatus of claim 8, further comprising a second lens positioned between said second aperture and said first light source, said second lens collimating light produced by said first light source to produce said second light beam.

10. The scanner apparatus of claim 9, further comprising a second light pipe positioned between said first light source and said second lens.

11. The scanner apparatus of claim 10, wherein the second light beam is produced by a second light source mounted adjacent said second light pipe.

12. Scanner apparatus having a visual scan-region position feedback system, comprising:

a body having an elongate opening therein that extends along a transverse axis and that encompasses a scan region on an object during a scanning operation;

an image sensing system mounted within said body and optically coupled to the elongate opening therein so that image light reflected by the scan region is incident on said image sensing system;

a first light source mounted to said body, said first light source producing a first light beam that is generally aligned with the elongate opening in said body and that extends in a first direction along the transverse axis; and

a second light source mounted to said body, said second light source producing a second light beam that is generally aligned with the elongate opening in said body and that extends in a second direction along the transverse axis, the second direction along the transverse axis being opposite the first direction along the transverse axis, the first and second light beams being incident on portions of the object being scanned during the scanning operation to provide a visual indication of a position of the scan region with respect to the object being scanned.

13. The scanner apparatus of claim 12, wherein said body includes a first end portion and a second end portion and wherein the first and second light beams extend outwardly from said first and second end portions of said body, respectively.

14. The scanner apparatus of claim 13, wherein the first end portion of said body includes a first aperture therein, said first light beam passing through said first aperture and wherein the second end portion of said body includes a second aperture therein, said second light beam passing through said second aperture.

15. The scanner apparatus of claim 14, further comprising a first lens positioned between said first light source and said first aperture, said first lens collimating light produced by said first light source.

16. The scanner apparatus of claim 15, further comprising a second lens positioned between said second light source and said second aperture, said second lens collimating light produced by said second light source.

17. The scanner apparatus of claim 16, further comprising a first light pipe positioned between said first light source and said first lens and a second light pipe positioned between said second light source and said second lens.

18. A method of scanning an object, comprising:

providing a scanner apparatus having an elongate opening therein that extends along a transverse direction;

placing said scanner apparatus in contact with at least a portion of the object to be scanned so that the elongate opening in the scanner apparatus encompasses a scan region; and

generating a first light beam that is generally aligned with the elongate opening in the scanner apparatus and that extends along the transverse direction so that said first light beam is incident on at least a portion of the object being scanned to provide a visual indication of a position of the scan region with respect to the object being scanned.

19. The method of claim 18, further comprising generating a second light beam that is generally aligned with the elongate opening in the scanner apparatus and that extends along an opposite transverse direction as said first light beam so that said second light beam is also incident on at least a portion of the object being scanned, said first and second light beams being substantially aligned with the scan region.

20. Scanner apparatus having a visual scan-region position feedback system, comprising:

a body having an elongate opening therein that extends along a transverse axis, the elongate opening encompassing a scan region on an object during a scanning operation;

image sensing means mounted within said body means for receiving image light reflected by the scan region and for producing an image data signal related to the image light; and

light source means for producing a light beam that is generally aligned with the elongate opening in said body and that extends along the transverse axis, the first light beam being incident on at least a portion of the object being scanned during the scanning operation to provide a visual indication of a position of the scan region with respect to the object being scanned.