Imaging module and reader for, and method of, expeditiously setting imaging parameters of an imager based on the imaging parameters previously set for a default imager
First Claim
1. An imaging module for imaging targets to be electro-optically read by image capture over a range of working distances away from the module, the module comprising:
- an imaging assembly including a near imager configured to image targets over a relatively wider, near imaging field of view, and a far imager configured to image targets over a relatively narrower, far imaging field of view; and
a control system configured to control a default one of the imagers to capture an image of a target in a frame, to determine a light intensity level of the captured image, to set at least one imaging parameter of the default imager based on the determined light intensity level, and to automatically set at least one imaging parameter of the other one of the imagers based on the at least one imaging parameter that was previously set for the default imager, and to electro-optically read the target.
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Abstract
An imaging reader has near and far imagers for imaging targets to be read over a range of working distances. A default imager captures a minor portion of an image of the target, and rapidly determines its light intensity level. The exposure and/or gain values of the default imager are set to predetermined values based on the determined light intensity level. If the target is not decoded by the default imager, then the exposure and/or gain values of another imager are set to predetermined values based on the exposure and/or gain values that were previously set for the default imager.
37 Citations
20 Claims
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1. An imaging module for imaging targets to be electro-optically read by image capture over a range of working distances away from the module, the module comprising:
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an imaging assembly including a near imager configured to image targets over a relatively wider, near imaging field of view, and a far imager configured to image targets over a relatively narrower, far imaging field of view; and a control system configured to control a default one of the imagers to capture an image of a target in a frame, to determine a light intensity level of the captured image, to set at least one imaging parameter of the default imager based on the determined light intensity level, and to automatically set at least one imaging parameter of the other one of the imagers based on the at least one imaging parameter that was previously set for the default imager, and to electro-optically read the target. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An imaging reader for imaging targets to be electro-optically read by image capture over a range of working distances away from the reader, the reader comprising:
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a housing having a light-transmissive window; and an imaging module supported by the housing and including an imaging assembly having a near imager configured to image targets through the window over a relatively wider, near imaging field of view, and a far imager configured to image targets through the window over a relatively narrower, far imaging field of view, and a control system configured to control a default one of the imagers to capture an image of a target through the window in a frame, to determine a light intensity level of the captured image, to set at least one imaging parameter of the default imager based on the determined light intensity level, and to automatically set at least one imaging parameter of the other one of the imagers based on the at least one imaging parameter that was previously set for the default imager, and to electro-optically read the target. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of imaging targets to be electro-optically read by image capture over a range of working distances, the method comprising:
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imaging targets with a near imager over a relatively wider, near imaging field of view; imaging targets with a far imager over a relatively narrower, far imaging field of view; controlling a default one of the imagers to capture an image of a target in a frame; determining a light intensity level of the captured image; setting at least one imaging parameter of the default imager based on the determined light intensity level; and automatically setting at least one imaging parameter of the other one of the imagers based on the at least one imaging parameter that was previously set for the default imager, and to electro-optically read the target. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification