APPARATUS COMPRISING IMAGE SENSOR ARRAY AND ILLUMINATION CONTROL
First Claim
Patent Images
1. An indicia reading apparatus comprising:
- an illumination assembly for projecting an illumination pattern, the illumination assembly comprising a light source;
an imaging assembly comprising (i) an image sensor array and (ii) an imaging lens assembly for focusing an image of a target within a field of view onto the image sensor array;
wherein the indicia reading apparatus, when in a first configuration, is configured for;
capturing a frame representing a first test substrate; and
capturing a frame representing a second test substrate;
wherein the frame representing the first test substrate has a higher average signal to noise ratio than the average signal to noise ratio of the frame representing the second test substrate;
wherein the indicia reading apparatus, when in a second configuration, is configured for;
capturing a frame representing the first test substrate; and
capturing a frame representing the second test substrate;
wherein the frame representing the second test substrate has a higher average signal to noise ratio than the average signal to noise ratio of the frame representing the second test substrate;
wherein the indicia reading apparatus is configured for;
sensing a condition; and
in response to the sensed condition, deactivating the first configuration and activating the second configuration.
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Abstract
There is set forth herein an indicia reading apparatus having a configuration in which an illumination assembly for projecting an illumination pattern is de-energized during subsequent exposure periods. In one embodiment the indicia reading apparatus includes a configuration in which the illumination assembly is energized intermediate of the exposure periods. The indicia reading apparatus is useful for reading decodable indicia that is displayed on a display.
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Citations
20 Claims
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1. An indicia reading apparatus comprising:
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an illumination assembly for projecting an illumination pattern, the illumination assembly comprising a light source; an imaging assembly comprising (i) an image sensor array and (ii) an imaging lens assembly for focusing an image of a target within a field of view onto the image sensor array; wherein the indicia reading apparatus, when in a first configuration, is configured for; capturing a frame representing a first test substrate; and capturing a frame representing a second test substrate; wherein the frame representing the first test substrate has a higher average signal to noise ratio than the average signal to noise ratio of the frame representing the second test substrate; wherein the indicia reading apparatus, when in a second configuration, is configured for; capturing a frame representing the first test substrate; and capturing a frame representing the second test substrate; wherein the frame representing the second test substrate has a higher average signal to noise ratio than the average signal to noise ratio of the frame representing the second test substrate; wherein the indicia reading apparatus is configured for; sensing a condition; and in response to the sensed condition, deactivating the first configuration and activating the second configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An indicia reading apparatus comprising:
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an imaging assembly including an image sensor array and an imaging lens assembly for focusing an image of a target onto the image sensor array; wherein the indicia reading apparatus is operative to capture a first frame and to subject the first frame to an attempt to decode decodable indicia; wherein the indicia reading apparatus is operative to emit energy at an energy level sufficient to induce a mode change from a first mode to a second mode in a target terminal displaying decodable indicia to be read; wherein the indicia reading apparatus is operative to detect whether the mode change has been induced; and wherein the indicia reading apparatus is operative to regulate the energy level of energy emitted by the indicia reading apparatus so that the second mode is maintained in the active state. - View Dependent Claims (11)
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12. An indicia reading apparatus comprising:
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an illumination assembly for projection of an illumination pattern, the illumination assembly having one or more light sources; an imaging assembly including an image sensor array and an imaging lens assembly for focusing an image of a target onto the image sensor array; wherein the indicia reading apparatus is operative in a first configuration and a second configuration; wherein the indicia reading apparatus is adapted so that one or more frames captured with the first configuration active have higher average signal to noise ratios when the one or more frames represent a first test substrate than when the frames represent a second test substrate; wherein the indicia reading apparatus is adapted so that one or more frames captured with the second configuration active have higher average signal to noise ratios when the one or more frames represent the second test substrate than when the frames represent the first test substrate; wherein the indicia reading apparatus is operative to deactivate the first configuration and activate the second configuration responsively to a sensed condition. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification