Imaging apparatus comprising image sensor array having shared global shutter circuitry
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.
1. An imaging apparatus comprising:
an image sensor array for generating frames of image data, the image sensory array comprising shared global shutter circuitry;
wherein the imaging apparatus, when in a first configuration, is configured for:
sequentially initiating exposure of pixels of a first row and a second row of pixels of the image sensor array; and
reading out a frame of image data from the image sensor array wherein pixel values 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, when in a second configuration, is configured for:
simultaneously initiating exposure of pixels of a first row and a second row of pixels of the image sensor array;
simultaneously terminating exposure of pixels of the first row and the second row of pixels of the image sensor array; and
reading out a frame of image data from the image sensor array using the shared global shutter circuitry, wherein pixel values are binned pixel values 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 comprises a hand held housing.
3. The imaging apparatus of claim 1 , comprising an operator input for activating the first configuration and the second configuration.
4. The imaging apparatus of claim 1 , comprising a trigger for generating a trigger signal, wherein the imaging apparatus is configured for, in response to the trigger signal, sequentially activating the first configuration and the second configuration on an open loop basis.
5. The imaging apparatus of claim 1 , comprising a trigger for generating a trigger signal, wherein the imaging apparatus is configured for, in response to the trigger signal, sequentially activating the first configuration and the second configuration on an open loop basis, wherein the second configuration is activated prior to the first configuration.
6. The imaging apparatus of claim 1 , comprising a trigger for initiating a trigger signal activation period, wherein the imaging apparatus is configured for, during the trigger signal activation period, sequentially activating the first configuration and the second configuration.
7. The imaging apparatus of claim 1 , wherein the first row and the second row of pixels are adjacent rows.
8. The imaging apparatus of claim 1 , wherein the first row and the second row of pixels are not adjacent rows.
9. The imaging apparatus of claim 1 , wherein the arrangement of two or more pixels is an arrangement of M×N adjacent pixels, wherein M≧2 and N≧2.
10. The imaging apparatus of claim 1 , wherein the arrangement of two or more pixels is an arrangement of 1×N adjacent pixels, wherein N≧2.
11. The imaging apparatus of claim 1 , wherein the imaging apparatus is configured for attempting to decode a decodable indicia by processing a frame captured while the second configuration is active.
12. The imaging apparatus of claim 1 , wherein:
the arrangement of two or more pixels is an arrangement of M×N adjacent pixels, wherein M≧2 and N≧2;
wherein the imaging apparatus, when in a third configuration, is configured for:
simultaneously initiating exposure of pixels of a first row and a second row of pixels of the image sensor array;
simultaneously terminating exposure of pixels of the first row and the second row of pixels of the image sensor array;
reading out a frame of image data from the image sensor array using the shared global shutter circuitry, wherein pixel values are binned pixel values that represent light incident on a spatial area delimited by an arrangement of 1×N adjacent pixels, wherein N≧2.
13. A method comprising:
activating a first configuration or a second configuration;
if the first configuration is activated:
sequentially initiating exposure of pixels of a first row and a second row of pixels of an image sensor array comprising shared global shutter circuitry; and
reading out a frame of image data from the image sensor array wherein pixel values are un-binned pixel values that represent light incident on a spatial area delimited by a single pixel of the image sensor array;
if the second configuration is activated:
simultaneously initiating exposure of pixels of a first row and a second row of pixels of the image sensor array;
simultaneously terminating exposure of pixels of the first row and the second row of pixels of the image sensor array; and
reading out a frame of image data from the image sensor array using the shared global shutter circuitry, wherein pixel values are binned pixel values that represent light incident on a spatial area delimited by an arrangement of two or more pixels of the image sensor array.
14. The method of claim 13 , comprising activating the first configuration or the second configuration in response to operator input.
15. The method of claim 13 , comprising activating the first configuration or the second configuration in response to a sensed condition.
16. The method of claim 13 , comprising:
determining a distance between the image sensor array and a target; and
activating the first configuration or the second configuration based on the determined distance.
17. The method of claim 13 , comprising:
capturing image data using the image sensor array;
processing the image data; and
activating the first configuration or the second configuration based on the processed image data.
18. The method of claim 13 , comprising:
capturing image data using the image sensor array;
processing the image data in an effort to recognize a representation of a spatial feature; and
activating the first configuration or the second configuration based on the processed image data.
19. The method of claim 13 , wherein the arrangement of two or more pixels is an arrangement of M×N adjacent pixels, wherein M≧2 and N≧2.
20. The method of claim 13 , comprising:
activating the first configuration, the second configuration, or a third configuration;
if the third configuration is activated:
simultaneously initiating exposure of pixels of a first row and a second row of pixels of the image sensor array;
simultaneously terminating exposure of pixels of the first row and the second row of pixels of the image sensor array; and
reading out a frame of image data from the image sensor array using the shared global shutter circuitry, wherein pixel values are binned pixel values that represent light incident on a spatial area delimited by an arrangement of 1×N adjacent pixels, wherein N≧2.