INDICIA READING TERMINAL HAVING MULTIPLE EXPOSURE PERIODS AND METHODS FOR SAME
First Claim
1. An image reading terminal comprising:
- a two dimensional image sensor array extending along an image plane, said two dimensional image sensor array comprising a plurality of pixels;
a hand held housing encapsulating said two dimensional image sensor array;
a first optical assembly for focusing imaging light rays onto a first set of pixels of said two dimensional image sensor array, wherein said first set of pixels have a first exposure time for receiving said imaging light rays transmitted by said first optical assembly;
a second optical assembly for focusing imaging light rays onto a second set of pixels of said two dimensional image sensor array, wherein said second set of pixels have a second different exposure time for receiving said imaging light rays transmitted by said second optical assembly;
said first exposure time and said second exposure times are in a single exposure period for the image sensor array;
a memory capable of storing a frame of image data, said frame of image data representing light incident on said image sensor array; and
a CPU capable of addressing said memory, wherein said CPU is adapted to attempt to decode a decodable indicia represented in said frame of image data.
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Abstract
There is described an image reading terminal having an image sensor array including a plurality of pixels, a first optical assembly for focusing imaging light rays onto a first set of pixels of an image sensor array and a second optical assembly for focusing imaging light rays onto a second set of pixels of the image sensor array. The first set of pixels and the second set of pixels of the image sensor array can have different exposure settings in a single exposure period for the image sensor array. In one embodiment, the indicia reading terminal can be adapted to process image data corresponding to pixels of the image sensor array for attempting to decode a decodable indicia.
115 Citations
20 Claims
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1. An image reading terminal comprising:
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a two dimensional image sensor array extending along an image plane, said two dimensional image sensor array comprising a plurality of pixels; a hand held housing encapsulating said two dimensional image sensor array; a first optical assembly for focusing imaging light rays onto a first set of pixels of said two dimensional image sensor array, wherein said first set of pixels have a first exposure time for receiving said imaging light rays transmitted by said first optical assembly; a second optical assembly for focusing imaging light rays onto a second set of pixels of said two dimensional image sensor array, wherein said second set of pixels have a second different exposure time for receiving said imaging light rays transmitted by said second optical assembly; said first exposure time and said second exposure times are in a single exposure period for the image sensor array; a memory capable of storing a frame of image data, said frame of image data representing light incident on said image sensor array; and a CPU capable of addressing said memory, wherein said CPU is adapted to attempt to decode a decodable indicia represented in said frame of image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An indicia reading terminal comprising:
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an image sensor array comprising a plurality of pixels; a hand held housing encapsulating said image sensor array; an image sensor array control circuit to control a first exposure time for a first set of pixels of the plurality of pixels and a second different exposure time for a second different set of pixels of the plurality of pixels in a frame time of the image sensor array; an image sensor array readout control circuit to output image data of the first set of pixels and second set of pixels from the frame time; a memory capable of storing said image data; and a CPU capable of addressing said memory, wherein said CPU is adapted to attempt to decode a decodable indicia represented in said image data. - View Dependent Claims (15, 16, 17, 18)
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19. An image reading terminal comprising:
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a two dimensional image sensor array extending along an image plane, said two dimensional image sensor array comprising a plurality of pixels; an image sensor array control circuit to read out a frame of data from said plurality of pixels; a first set of pixels and a second different set of pixels comprise the plurality of pixels of the image sensor array, wherein the first set of pixels and the second set of pixels each have different exposure times; and a CPU capable of receiving the frame of data, wherein said CPU is adapted to attempt to decode a decodable indicia represented in said frame of data. - View Dependent Claims (20)
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Specification