Apparatus for capturing images and barcodes

• US 20030201328A1
• Filed: 04/30/2002
• Published: 10/30/2003
• Est. Priority Date: 04/30/2002
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Jam, Mehrban, Lyon, Geoff
• Granted Patent: US 6,824,059 B2
• Time in Patent Office: Days
• US Class Current: 235/462.22
• CPC Class Codes: G06K 7/10811 Focalisation

Abstract

An apparatus for capturing images and barcodes. The apparatus has an image-sensing device and a lens having a variable-focal-length region and a substantially fixed-focal-length region. The variable-focal-length region focuses light onto a first region of the image-sensing device and the substantially fixed-focal-length region focuses light onto a second region of the image-sensing device. The variable-focal-length region varies such that different portions of that region of the lens focus objects at different distances from the lens in different areas of the first region of the image-sensing device. Thus, the device is able to focus, in the first region of the image-sensing device, objects at varying distances from the apparatus.

Claims

1. An apparatus for capturing images and barcodes, comprising:

an image-sensing device;

a lens having a variable-focal-length region focusing light onto a first region of said image-sensing device;

said lens having a substantially fixed-focal-length region focusing light onto a second region of said image-sensing device; and

wherein focal length in said variable-focal-length region varies such that different portions of said variable-focal-length region focus objects at different distances from said lens in different areas of said first region, wherein said apparatus is able to focus, in said first region, objects at varying distances from said apparatus.

2. The apparatus of claim 1, wherein said substantially fixed-focal-length region is for imaging objects at a long range from said apparatus onto said second region of said image-sensing device.

3. The apparatus of claim 1, further comprising a color filter over at least a portion of said second region of said image-sensing device.

4. The apparatus of claim 1, further comprising a filter mask over said second region of said image-sensing device, wherein said filter mask comprises a plurality of colors formed in a pattern to allow for color imaging in said second region.

5. The apparatus of claim 1, wherein said image-sensing device comprises a first and a second component, said first component comprising said first region and said second component comprising said second region.

6. The apparatus of claim 5, wherein said second component is optimized for image data.

7. The apparatus of claim 5, wherein said first component is optimized for barcode data.

8. An apparatus for focusing images and barcodes, comprising:

a first image-sensing device;

a second image-sensing device;

a first lens having a variable-focal-length and focusing light onto said first image-sensing device;

a second lens having a substantially fixed-focal-length and focusing light onto said second image-sensing device;

wherein said first lens has a focal length which varies across its surface such that different portions of said lens focus objects at different distances from said lens at different regions of said first image-sensing device, wherein said apparatus is able to focus barcodes at varying distances from said apparatus; and

wherein said second lens focuses image data from objects at up to infinity from said apparatus.

9. The apparatus of claim 8, wherein:

said first image-sensing device comprises an array of pixels; and

said apparatus further comprises a filter mask over at least a portion of said first image-sensing device.

10. The apparatus of claim 9, wherein said filter mask comprises a pattern alternating between at least two colors.

11. The apparatus of claim 8, wherein pixel density of said second image-sensing device is higher than pixel density of said first image-sensing device.

12. The apparatus of claim 8, wherein said apparatus is operable to focus barcodes at a range from said apparatus of approximately a few millimeters to approximately infinity on at least one region of said first image-sensing device without moving said first lens relative to said first image-sensing device.

13. The apparatus of claim 8, wherein said apparatus is able to focus an image of a barcode on said first image-sensing device without altering the distance between said apparatus and said barcode by said apparatus being angled to cause said barcode image to be formed from light passing through a portion of said first image-sensing device with appropriate focal length given the distance said barcode is from said apparatus.

14. A portable electronic apparatus for image and barcode capture, comprising:

an image-sensing device having a first and a second region;

a lens having a first portion of variable-focal-length focusing light onto said first region and said lens having a second portion with a substantially fixed-focal-length focusing light onto said second region;

a signal processor coupled to said image-sensing device, said processor for decoding barcodes from data from said first region and for processing images from data from said second region; and

wherein said focal length of said first portion of said lens varies such that different areas of said first portion focus objects at different distances from said lens at different areas of said first region of said image-sensing device, wherein said apparatus is able to focus, in said first region, objects at varying distances from said apparatus.

15. The portable electronic apparatus of claim 14, wherein said image-sensing device is fabricated on a single integrated circuit.

16. The portable electronic apparatus of claim 14, wherein said portable electronic apparatus is a personal digital assistant.

17. The portable electronic apparatus of claim 14, wherein said portable electronic apparatus is a mobile telephone.

18. The portable electronic apparatus of claim 14, wherein said image-sensing device comprises an array of pixels;

and

said portable electronic apparatus further comprises a color filter over at least a portion of said second region of said image-sensing device and not over said first region.

19. The portable electronic apparatus of claim 18, wherein said color filter comprises a pattern alternating between at least two colors.

20. The portable electronic apparatus of claim 14, wherein pixel density of said second region of said image-sensing device is higher than pixel density of said first region.

21. The portable electronic apparatus of claim 14, wherein said first region is substantially smaller than said second region.

22. The portable electronic apparatus of claim 14, wherein said first region is comprises substantially fewer pixels than said second region.

23. The portable electronic apparatus of claim 14, wherein pixel density of said first region of said image-sensing device is substantially higher than pixel density of said second region.