IMAGING APPARATUS COMPRISING IMAGE SENSOR ARRAY HAVING SHARED GLOBAL SHUTTER CIRCUITRY

• US 20130112753A1
• Filed: 11/04/2011
• Published: 05/09/2013
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Wang, Ynjiun Paul
• Granted Patent: US 8,629,926 B2
• Time in Patent Office: Days
• US Class Current: 235/472.01
• CPC Class Codes: G06K 7/10 by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
• CPC Class Codes: G06K 7/10722 Photodetector array or CCD scanning
• CPC Class Codes: H04N 25/42 by switching between different modes of operation using different resolutions or aspect ratios, e.g. switching between interlaced and non-interlaced mode
• CPC Class Codes: H04N 25/46 by combining or binning pixels
• CPC Class Codes: H04N 25/531 by controlling rolling shutters in CMOS SSIS
• CPC Class Codes: H04N 25/75 Circuitry for providing, modifying or processing image signals from the pixel array
• CPC Class Codes: H04N 25/778 comprising amplifiers shared between a plurality of pixels, i.e. at least one part of the amplifier must be on the sensor array itself

Abstract

There is set forth herein in one embodiment an image sensor array including a global shutter shared by first and second pixels. The global shutter can include a charge storage area having an associated shield for reducing charge build up on the charge storage area attributable to incident light rays. There is set forth herein in one embodiment an imaging apparatus having one or more configuration. The one or more configuration can include one or more of a configuration wherein a frame read out from an image sensor array has unbinned pixel values, a configuration wherein a frame read out from an image sensor array has binned pixel values corresponding to an M×N, M>=2, N>=2 arrangement of pixel values, and a configuration wherein a frame read out from an image sensor array has binned pixel values corresponding to a 1×N, N>=2 arrangement of pixel values.

Claims

1. An imaging apparatus comprising:

an image sensor array;

an imaging lens assembly for focusing an image onto the image sensor array;

wherein the imaging apparatus includes a first configuration in which the imaging apparatus is operative to read out one or more frame of image data from the image sensor array in accordance with a rolling shutter operation in which exposure of pixels of first and second rows of pixels of the image sensor array is initiated sequentially, and wherein pixel values responsive to light incident on pixels of the first and second rows of pixels subject to readout are un-binned pixel values that represent light incident on a spatial area delimited by a single pixel of the image sensor array;

wherein the imaging apparatus includes a second configuration in which of the imaging apparatus is operative to read out one or more frame of image data from the image sensor array in accordance with a global shutter operation in which exposure of pixels of the first and second rows of pixels of the image sensor array is initiated and terminated simultaneously, and wherein pixel values responsive to light incident on pixels of the first and second rows of pixels subject to readout are binned pixel values read out using shared global shutter circuitry of the image sensor array that represent light incident on a spatial area delimited by an arrangement of two or more pixels of the image sensor array.

2. The imaging apparatus of claim 1, wherein the imaging apparatus includes a hand held housing in which the image sensor array is disposed.

3. The imaging apparatus of claim 1, wherein the imaging apparatus is adapted for fixed mounting.

4. The imaging apparatus of claim 1, wherein the imaging apparatus is operative so that the first configuration and the second configuration can be activated responsively to an operator input control.

5. The imaging apparatus of claim 1, wherein the imaging apparatus is operative to sequentially activate the first configuration and the second configuration on an open loop basis responsively to a trigger signal activation.

6. The imaging apparatus of claim 5, wherein the imaging apparatus is operative to sequentially activate the first configuration and the second configuration by activating the second configuration prior to activating the first configuration.

7. The imaging apparatus of claim 1, wherein the imaging apparatus is operative to activate one or more of the first configuration and the imaging apparatus of any of claims 1 through 7, wherein the imaging apparatus is operative so that the imaging apparatus can sequentially activate the first configuration and the second configuration during a trigger signal activation period.

8. The imaging apparatus of claim 1, wherein the first and second rows of pixels are adjacent rows of pixels.

9. The imaging apparatus of claim 1, wherein the first and second rows of pixels are non-adjacent rows of pixels.

10. The imaging apparatus of claim 1, wherein the arrangement of two or more pixels is an arrangement of M×

N adjacent pixels, M>

=2, N>

=2.

11. The imaging apparatus of claim 1, wherein the arrangement of two or more pixels is an arrangement of 1×

N adjacent pixels, N>

=2.

12. The imaging apparatus of claim 1, wherein the imaging apparatus is operative to attempt to decode a decodable indicia by processing of one or more frame captured with the second configurations active.

13. The imaging apparatus of claim 1, wherein the arrangement of two or more pixels in accordance with the second configuration is an arrangement of M×

N adjacent pixels, M>

=2, N>

=2, and wherein the imaging apparatus includes a third configuration in which the imaging apparatus is operative to read out one or more frame of image data from the image sensor array in accordance with a global shutter operation in which exposure of pixels of the first and second rows of pixels of the image sensor array is initiated and terminated simultaneously, and wherein pixel values responsive to light incident on pixels of the first and second rows of pixels subject to readout are binned pixel values that are read out using shared global shutter circuitry of the image sensor array and which represent light incident on a spatial area delimited by an arrangement of two or more pixels of the image sensor array, the arrangement of two or more pixels in accordance with the third configuration being an arrangement of 1×

N adjacent pixels, N>

=2.

24. The method of claim 1, wherein the activating includes activating each of the first configuration and the second configuration responsively to one or more sensed condition during a trigger signal activation period.

14. A method comprising:

providing and imaging apparatus having an image sensor array, an imaging lens assembly for focusing an image onto the image sensor array, wherein the imaging apparatus includes a first configuration in which the imaging apparatus is operative to read out one or more frame of image data from the image sensor array in accordance with a rolling shutter operation in which exposure of pixels of first and second rows of pixels of the image sensor array is initiated sequentially, and wherein pixel values responsive to light incident on pixels of the first and second rows of pixels subject to readout are un-binned pixel values that represent light incident on a spatial area delimited by a single pixel of the image sensor array, wherein the imaging apparatus includes a second configuration in which the imaging apparatus is operative to read out one or more frame of image data from the image sensor array in accordance with a global shutter operation in which exposure of pixels of the first and second rows of pixels of the image sensor array is initiated and terminated simultaneously, and wherein pixel values responsive to light incident on pixels of the first and second rows of pixels subject to readout are binned pixel values read out using shared global shutter circuitry of the image sensor array that represent light incident on a spatial area delimited by an arrangement of two or more pixels of the image sensor array; and

activating one or more of the first configuration and the second configuration.

15. The method of claim 14, wherein the activating includes activating one or more of the first configuration and the second configuration responsively to an operator input control.

16. The method of claim 14, wherein the activating includes activating one or more of the first configuration and the second configuration responsively to one or more sensed condition.

17. The method of claim 16, wherein the one or more sensed condition is an imaging apparatus to target distance.

18. The method of claim 16, wherein the sensed condition is sensed by processing of image data captured using the imaging apparatus.

19. The method of claim 16, wherein the sensed condition sensed by processing of image data captured using the imaging apparatus, the processing being a processing to recognize a representation of a spatial feature.

20. The method of claim 16, wherein the sensed condition sensed by processing of image data captured using the imaging apparatus, the processing being a processing to recognize a representation of a spatial feature, the spatial feature being a decodable indicia.

21. The method of claim 16, wherein the activating includes activating one or more of the first configuration and the second configuration responsively to one or more a sensed condition, the sensed condition being sensed during a trigger signal activation period.

22. The method of claim 14, wherein the activating includes activating each of the first configuration and the second configuration during a trigger signal activation period.

23. The method of claim 14, wherein the activating includes activating each of the first configuration and the second configuration on an open loop basis during a trigger signal activation period.

25. The method of claim 14, wherein the activating includes activating the first configuration for use of the apparatus for document capture, and activating the second configuration for use of the apparatus for reading of decodable indicia.

26. The method of claim 14, wherein the arrangement of two or more pixels in accordance with the second configuration is an arrangement of M×

N adjacent pixels, M>

=2, N>

=2, and wherein the providing further includes providing the imaging apparatus to include a third configuration in which the imaging apparatus is operative to read out one or more frame of image data from the image sensor array in accordance with a global shutter operation in which exposure of pixels of the first and second rows of pixels of the image sensor array is initiated and terminated simultaneously, and wherein pixel values responsive to light incident on pixels of the first and second rows of pixels subject to readout are binned pixel values read out using shared global shutter circuitry of the image sensor array that represent light incident on a spatial area delimited by an arrangement of two or more pixels of the image sensor array, the arrangement of two or more pixels in accordance with the third configuration being an arrangement of 1×

N adjacent pixels, N>

=2.

27. The method of claim 26, wherein the activating includes activating the first configuration for use of the apparatus for document capture, and activating the second configuration for use of the apparatus for reading of decodable indicia at relatively close range, and wherein the activating includes activating the third configuration for use of imaging apparatus for reading of decodable indicia at relatively long range.