INDICIA READING TERMINAL INCLUDING FRAME PROCESSING
First Claim
Patent Images
1. An indicia reading terminal comprising:
- an image sensor integrated circuit having a two dimensional image sensor array, said two dimensional image sensor array including a plurality of pixels, said indicia reading terminal including a binning module for applying a function using image information values representative of light incident at a plurality of pixels of said image sensor array, said indicia reading terminal further including a windowing module for use in selectively addressing a subset of pixels of said image sensor array for read out of a windowed frame;
an imaging lens for use in focusing an image of a target decodable indicia onto said two dimensional image sensor array;
wherein said indicia reading terminal is operative so that said indicia reading terminal can process a succession of frames, said succession of frames including a binned frame, said succession of frames further including a windowed frame, the windowed frame having image data representing light incident at a group of pixels of said image sensor array, the group of pixels comprising less than 50% of a total number of pixels of said image sensor array, the windowed frame representing indicia within a defined area of a target substrate that is relatively smaller than a defined area within which indicia would be represented by a frame representing light incident on each pixel of said image sensor array;
wherein said indicia reading terminal is operative to process a frame of said succession of frames for attempting to decode for decodable indicia.
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Abstract
There is described an indicia reading terminal that can be operative to process a frame of image data for attempting to decode a decodable indicia. A frame can be a frame that is among a succession of frames for subjecting to processing subsequent to and during a time a trigger signal is active. Such a succession of frames can include zero or more binned frames, zero or more unbinned frames, zero or more windowed frames, and zero or more unwindowed full frames. An indicia reading terminal can also include a variable focus imaging lens.
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Citations
20 Claims
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1. An indicia reading terminal comprising:
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an image sensor integrated circuit having a two dimensional image sensor array, said two dimensional image sensor array including a plurality of pixels, said indicia reading terminal including a binning module for applying a function using image information values representative of light incident at a plurality of pixels of said image sensor array, said indicia reading terminal further including a windowing module for use in selectively addressing a subset of pixels of said image sensor array for read out of a windowed frame; an imaging lens for use in focusing an image of a target decodable indicia onto said two dimensional image sensor array; wherein said indicia reading terminal is operative so that said indicia reading terminal can process a succession of frames, said succession of frames including a binned frame, said succession of frames further including a windowed frame, the windowed frame having image data representing light incident at a group of pixels of said image sensor array, the group of pixels comprising less than 50% of a total number of pixels of said image sensor array, the windowed frame representing indicia within a defined area of a target substrate that is relatively smaller than a defined area within which indicia would be represented by a frame representing light incident on each pixel of said image sensor array; wherein said indicia reading terminal is operative to process a frame of said succession of frames for attempting to decode for decodable indicia. - 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 image sensor integrated circuit having a two dimensional image sensor array, said two dimensional image sensor array including a plurality of pixels, said indicia reading terminal including a binning module applying a function using image information values representative of light incident at a plurality of pixels of said image sensor array; an imaging lens for use in focusing an image of a target decodable indicia onto said two dimensional image sensor array; wherein said indicia reading terminal is operative so that indicia reading terminal can process a succession of frames, said succession of frames including a first binned frame and a second binned frame; wherein said indicia reading terminal is operative to process a frame of said succession of frames for attempting to decode for decodable indicia; and wherein said first binned frame has a bin size larger than a bin size of said second binned frame, and wherein said imaging lens is a variable focus imaging lens capable of defining a plurality of best focus distances, and wherein said indicia reading terminal is operative so that said variable focus imaging lens is moved between first and second best focus distance settings, said first best focus distance being relatively shorter than said second best focus distance, said indicia reading terminal further being operative so that said variable focus imaging lens is controlled to be at said first best focus distance during an exposure period for said first binned frame, said indicia reading terminal further being operative so that said variable focus imaging lens is controlled to be at said second best focus distance during an exposure period for said second binned frame. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An indicia reading terminal comprising:
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an image sensor integrated circuit having a two dimensional image sensor array, said two dimensional image sensor array including a plurality of pixels, said indicia reading terminal including a windowing module for use in selectively addressing a subset of pixels of said image sensor array for read out of a windowed frame having image data; an imaging lens for use in focusing an image of a target decodable indicia onto said image sensor array; wherein said indicia reading terminal is operative for capture of a succession of frames wherein said succession of frames includes a first frame and a second windowed frame, said first frame representing light incident on a larger number of pixels of said image sensor array than said second windowed frame, wherein said second windowed frame represents light incident at a group of pixels comprising less than 50% of a total number of pixels of said image sensor array, wherein said imaging lens is a variable focus imaging lens capable of defining a plurality of best focus distances, and wherein said indicia reading terminal is operative so that said variable focus imaging lens is moved between first and second best focus distance settings, said first best focus distance being relatively shorter than said second best focus distance, said indicia reading terminal further being operative so that said variable focus imaging lens is controlled to be at said first best focus distance during an exposure period for said first frame, said indicia reading terminal further being operative so that said variable focus imaging lens is controlled to be at said second best focus distance during an exposure period for said second windowed frame; and wherein said indicia reading terminal is operative to process a frame of said succession of frames for attempting to decode for decodable indicia.
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Specification