DEVICES AND METHODS EMPLOYING DUAL TARGET AUTO EXPOSURE
First Claim
1. A device for obtaining images, said device comprising:
- an imaging subsystem comprising an image sensor array and an imaging assembly operative for focusing an image onto said image sensor array;
a housing incorporating said imaging subsystem;
wherein said device is adapted to acquire a first plurality of images based on a first control parameter in which said first control parameter for a subsequent image of said first plurality of images is adjusted based on a prior image of said first plurality of images, and adapted to acquire a second plurality of images based on a second control parameter in which said second control parameter for a subsequent image of said second plurality of images is adjusted based on a prior image of said second plurality of images, adjustment of said first control parameter being determined differently compared to adjustment of said second control parameter; and
wherein acquisition of said first plurality of images being interspersed with and obtained generally concurrently with acquisition of said second plurality of images, and acquisition of said first plurality of images and adjustment of said first control parameter being separate from acquisition of said second plurality of images and adjustment of said second control parameter.
1 Assignment
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Accused Products
Abstract
The method includes automatically adjusting a first control parameter in a device for capturing a first plurality of images, automatically adjusting a second control parameter in the device for capturing a second plurality of images such that automatic adjustment of the first control parameter is interspersed with, separate from, and obtained generally concurrently with the automatic adjustment of the second control parameter. The adjustment of the first control parameter being determined differently compared to adjustment of the second control parameter. The method may include attempting to decode a decodable indicia utilizing one or more images of the first and second plurality of images.
9 Citations
32 Claims
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1. A device for obtaining images, said device comprising:
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an imaging subsystem comprising an image sensor array and an imaging assembly operative for focusing an image onto said image sensor array; a housing incorporating said imaging subsystem; wherein said device is adapted to acquire a first plurality of images based on a first control parameter in which said first control parameter for a subsequent image of said first plurality of images is adjusted based on a prior image of said first plurality of images, and adapted to acquire a second plurality of images based on a second control parameter in which said second control parameter for a subsequent image of said second plurality of images is adjusted based on a prior image of said second plurality of images, adjustment of said first control parameter being determined differently compared to adjustment of said second control parameter; and wherein acquisition of said first plurality of images being interspersed with and obtained generally concurrently with acquisition of said second plurality of images, and acquisition of said first plurality of images and adjustment of said first control parameter being separate from acquisition of said second plurality of images and adjustment of said second control parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An indicia reading terminal comprising:
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an illumination subsystem operative for projecting an illumination pattern; an imaging subsystem comprising an image sensor array and an imaging assembly operative for focusing an image onto said image sensor array; a housing incorporating said illumination subsystem and said imaging subsystem; wherein said indicia reading terminal is adapted to acquire a first plurality of images exposed during illuminated portions of said illumination pattern based on a first control parameter in which said first control parameter for a subsequent image of said first plurality of images is adjusted based on a prior image of said first plurality of images, and adapted to acquire a second plurality of images exposed during unilluminated portions of said illumination pattern based on a second control parameter in which said second control parameter for a subsequent image of said second plurality of images is adjusted based on a prior image of said second plurality of images; wherein acquisition of said first plurality of images being interspersed with and being obtained generally concurrently with acquisition of said second plurality of images, and acquisition of said first plurality of images and adjustment of said first control parameter being separate from acquisition of said second plurality of images and adjustment of said second control parameter; and wherein said indicia reading terminal is operable to attempt to decode a decodable indicia comprising a bar code disposed on a substrate using at least one of said first plurality of images, and operable to attempt to decode a decodable indicia comprising a bar code disposed on a backlit display using at least one of said second plurality of images. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for use in obtaining images, the method comprising:
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automatically adjusting a first control parameter in a device for capturing a first plurality of images; and automatically adjusting a second control parameter in the device for capturing a second plurality of images such that automatic adjustment of the first control parameter is interspersed with, separate from, and obtained generally concurrently with the automatic adjustment of the second control parameter, and adjustment of the first control parameter being determined differently compared to adjustment of the second control parameter. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for decoding decodable indicia, the method comprising:
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projecting an illumination pattern from an indicia reading terminal onto a decodable indicia; automatically adjusting a first control parameter in the indicia reading terminal for capturing a first plurality of images exposed during illuminated portions of the illumination pattern; automatically adjusting second control parameter in the indicia reading terminal for capturing a second plurality of images exposed during unilluminated portions of the illumination pattern such that automatic adjustment of the first control parameter is interspersed with and obtained generally concurrently with the automatic adjustment of the second control parameter; and attempting to decode the decodable indicia utilizing one or more images of the first and second plurality of images. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification