APPARATUS COMPRISING IMAGE SENSOR ARRAY HAVING GLOBAL SHUTTER SHARED BY A PLURALITY OF PIXELS

• US 20130113967A1
• Filed: 11/04/2011
• Published: 05/09/2013
• Est. Priority Date: 11/04/2011
• Status: Abandoned Application

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Wang, Ynjiun Paul
• Application Number:
  US13/289,778
• Publication Number:
  US 20130113967A1
• Time in Patent Office: Days
• US Class Current: 348/302
• CPC Class Codes: G06K 7/10722 Photodetector array or CCD scanning
• CPC Class Codes: H04N 25/46 by combining or binning pixels
• CPC Class Codes: H04N 25/53 Control of the integration time
• CPC Class Codes: H04N 25/532 by controlling global shutters in CMOS SSIS
• 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 apparatus comprising:

an image sensor array having a plurality of pixels including a first pixel and a second pixel, the first pixel and the second pixel sharing a common global shutter having a charge storage area and an associated opaque shield, the opaque shield for reducing charge buildup on the charge storage area attributable to light rays being incident on the charge storage area.

2. The apparatus of claim 1, wherein the image sensor array is operative so that a charge from the first pixel is transferred to the charge storage area and remains at the charge storage area for a storage period prior to readout of the charge from the charge storage area, wherein the opaque shield reduces build up of charge at the charge storage area during the charge storage period so that an affect of incident light on the charge storage area during the charge storage period is reduced.

3. The apparatus of claim 2, wherein the image sensor array is operative so that a charge from the second pixel is transferred to the common charge storage area simultaneously with the transfer of the charge from the first pixel, the charge storage area storing an aggregate charge of at least the first pixel and the second pixel.

4. The apparatus of claim 3, wherein the image sensor array includes the first pixel, the second pixel, a third pixel and a fourth pixel shared by the charge storage area, wherein the image sensor array is operative so that charge from the second pixel, third pixel and fourth pixel are transferred to the charge storage area simultaneously with the transfer of charge from the first pixels, wherein the charge storage area has an aggregate charge of the first pixel, second pixel, third pixel and fourth pixel defining a binned pixel value present light over the spatial area defined by the first pixel, second pixel, third pixel and fourth pixel.

5. The apparatus of claim 1, wherein the image sensor array is operative so that charges from the first pixel and the second pixel are subject to simultaneous transfer to the charge storage area for storage of an aggregate charge on the charge storage area for a storage period prior to readout of the aggregate charge from the charge storage area, wherein the aggregate charge defines a binned pixel value, and wherein the opaque shield reduces build up of charge at the charge storage area attributable to incident light rays during the charge storage period so that an affect of incident light on the charge storage area during the charge storage period is reduced.

6. The apparatus of claim 5, wherein the binned pixel value represents light incident on a spatial area delimited by a 1×

N, N≧

2 arrangement of adjacent pixels of the image sensor array.

7. The apparatus of claim 5, wherein the binned pixel value represents light incident on a spatial area delimited on an M×

N, M≧

2, N≧

2 arrangement of adjacent pixels of the image sensor array.

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

9. The apparatus of claim 1, wherein the apparatus is provided by an image sensor integrated circuit.

10. The apparatus of claim 1, wherein the apparatus is provided by an imaging apparatus having an imaging lens for focusing an image onto the image sensor array, the apparatus operative to capture a frame of image data utilizing the image sensor array.

11. The apparatus of claim 1, wherein the apparatus is provided by an imaging apparatus having an imaging lens for focusing an image onto the image sensor array, the imaging apparatus being operative to capture a frame of image data utilizing the image sensor array and further being operative to subject the frame of image data to an attempt to decode a decodable indicia.

12. The apparatus of claim 11, wherein the frame of image data is a windowed frame.

13. The apparatus of claim 11, wherein the frame of image data is a windowed frame having binned pixel values.

14. The apparatus of claim 11, wherein the frame of image data is a windowed frame having binned pixel values, wherein pixel values of the binned pixel values represent light incident on a spatial area delimited by a 1×

N, N≧

2 arrangement of adjacent pixels of the image sensor array.

15. The apparatus of claim 11, wherein the apparatus is operative so that responsively to trigger signal activation the apparatus reads out a first frame and a second frame of image data from the image sensor array.

16. The apparatus of claim 1, wherein the first pixel and the second pixel are disposed in first and second adjacent rows of the image sensor array, wherein the image sensor array is operative so that the first pixel and the second pixel have sequential exposure initiation times, wherein the image sensor array is further operative so that the first pixel and the second pixel have sequential readout times.

17. The apparatus of any claim 1, wherein the apparatus includes a first configuration and a second configuration, wherein each of the first configuration and the second configuration are configurations in which pixels of different rows of the image sensor array subject to readout have common exposure initiation and termination times.

18. The apparatus of claim 1, wherein the apparatus includes a first configuration and a second configuration, wherein each of the first configuration and the second configuration are configurations in which pixels of the image sensor array subject to readout have common exposure initiation and termination times, wherein binned pixels values corresponding to arrangements of adjacent pixels of a first dimension are read out of the image sensor array when the apparatus operates in accordance with the first configuration, and wherein binned pixel values corresponding to arrangements of adjacent pixels of a second dimension are read out of the image sensor array when the apparatus operates in accordance with the second configuration, and wherein the second dimension is different than the first dimension.

19. The apparatus of claim 1, wherein the apparatus includes a first configuration and a second configuration, wherein the first pixel and the second pixel of the image sensor array when subject to readout with the first configuration active do not have common exposure initiation and termination times, and wherein the first pixel and second pixel of the image sensor array when subject to readout with the second configuration active do have common exposure initiation and termination times.

20. The apparatus of claim 1, wherein the apparatus has a first configuration in which pixel values read out from the image sensor array are devoid of binned pixel values corresponding to bins of pixels of the image sensor array, and a second configuration in which pixel values read out from the image sensor array include binned pixel values corresponding to bins of pixels, wherein the apparatus is operative to switch between the first configuration and the second configuration responsively to one or more of a sensed condition and an operator input control.

21. The apparatus of claim 1, wherein the image sensor array includes first and second cells, each cell of the first and second cells having a set of components constructed in accordance with the first pixel the second pixel, the common storage area and the shield so that each of the first cell and the second cell has a first pixel a second pixel a common storage area and an opaque shield, wherein the image sensor array is operative so that there is a common exposure initiation time for exposure of the first and second pixels of the first cell and for the first and second pixels of the second cell, the image sensor array further being operative so that transfer of charge from the first pixel to the charge storage area of the first cell and transfer of charge from the first pixel to the charge storage area of the second cell is performed simultaneously, the image sensor array further being operative so that readout of charge from the charge storage area of second cell is initiated sequentially in relation to readout of charge from the charge storage area of the first cell.

22. The apparatus of claim 1, wherein the charge storage area is included in a pixel amplifier circuit.

23. The apparatus of claim 1, wherein the apparatus is operative in accordance with a configuration, wherein exposure of pixels of a plurality of rows of pixels the image sensor array is initiated simultaneously.

24. An apparatus comprising:

an image sensor array having a first arrangement of adjacent pixels including a first pixel and a second pixel, the first pixel and the second pixel of the first arrangement of adjacent pixels sharing a first global shutter having a first charge storage area;

wherein the image sensor array has a second arrangement of adjacent pixels including a first pixel and a second pixel, the first pixel and the second pixel of the second arrangement of adjacent pixels sharing a second global shutter having a second charge storage area;

wherein the first pixel and the second pixel of the first arrangement of adjacent pixels are disposed in first and second rows of the image sensor array respectively, and wherein the first pixel and the second pixel of the second arrangement of adjacent pixels are disposed in third and fourth rows of the image sensor array respectively;

wherein the image sensor array is operative so that each of the first pixel and the second pixel of the first arrangement of adjacent pixels and each of the first pixel and the second pixel of the second arrangement of adjacent pixels have common exposure initiation and termination times;

wherein the image sensor array is further operative so that readout of an image signal corresponding to a charge stored on the second common charge storage area is performed sequentially relative to readout of an image signal corresponding to a charge stored on the first common charge storage area.

25. The apparatus of claim 24, wherein the second common charge storage area comprises an associated opaque shield, the opaque shield for reducing an amount of charge build up on the second common charge storage area attributable to light rays being incident on the second common charge storage area during a delay between a termination of exposure of the first pixel and the second pixel of the second arrangement of adjacent pixels, and read out of an image signal corresponding to a charge stored on the second common charge storage area.

26. The apparatus of claim 25, wherein the image sensor array is operative so that a charge from the first pixel of the second arrangement of adjacent pixels is transferred to the common charge storage area of the second arrangement of adjacent pixels and remains at the common charge storage area of the second arrangement of adjacent pixels for a storage period prior to readout of the charge from the common charge storage area of the second arrangement of adjacent pixels, wherein the opaque shield reduces build up of charge at the common charge storage area of the second arrangement of adjacent pixels during the charge storage period so that an affect of incident light on the common charge storage area during the charge storage period is reduced.

27. The apparatus of claim 24, wherein the image sensor array is operative so that a charge from the second pixel of the second arrangement of adjacent pixels is transferred to the common charge storage area of the second arrangement of adjacent pixels simultaneously with the transfer of the charge from the first pixel of the second arrangement of adjacent pixels, the common charge storage area of the second arrangement of adjacent pixels storing an aggregate charge of at least the first pixel and the second pixel.

28. The apparatus of claim 27, wherein the second arrangement of adjacent pixels includes the first pixel, the second pixel, a third pixel and a fourth pixel shared by the common charge storage area of the second arrangement of adjacent pixels, wherein the image sensor array is operative so that charge from the second pixel, third pixel and fourth pixel of the second arrangement of adjacent pixels are transferred simultaneously with the transfer of charge from the first pixel of the second arrangement of adjacent pixels, wherein the common charge storage area of the second arrangement of adjacent pixels stores an aggregate charge of the first pixel, second pixel, third pixel and fourth pixel defining a binned pixel value representing light over the spatial area defined by the first pixel, second pixel, third pixel and fourth pixel of the second arrangement of adjacent pixels.

29. The apparatus of claim 24, wherein the image sensor array is operative so that charges from the first pixel and the second pixel of the second arrangement of adjacent pixels are subject to simultaneous transfer to the common charge storage area of the second arrangement of adjacent pixels for storage of an aggregate charge on the common charge storage area of the second arrangement of adjacent pixels for a storage period prior to readout of the aggregate charge from the common charge storage area of the second arrangement of adjacent pixels, wherein the aggregate charge defines a binned pixel value, and wherein the opaque shield reduces build up of charge at the common charge storage area attributable to incident light rays during the charge storage period so that an affect of incident light on the common charge storage area during the charge storage period is reduced.

30. The apparatus of claim 29, wherein the binned pixel value represents light incident on a spatial area delimited by a 1×

N, N≧

2 arrangement of adjacent pixels of the image sensor array.

31. The apparatus of claim 29, wherein the binned pixel value represents light incident on a spatial area delimited on an M×

N, M≧

2, N≧

2 arrangement of adjacent pixels of the image sensor array.

32. The apparatus of claim 24, wherein the apparatus includes a hand held housing in which the image sensor array is disposed.