Method to differentiate aiming from active decoding
First Claim
1. A method of decoding a barcode within an imaging field of view of an imaging system that includes an imaging sensor, the method comprising:
- generating a first illumination with an illumination source;
directing the first illumination to pass through an aperture to generate an illumination pattern for defining an illumination field of view that is configured to indicate a boundary surrounding the imaging field of view of the imaging system, wherein the first illumination is configured to have the intensity thereof change with time to cause an intensity variation of the illumination pattern, with the intensity variation being perceivable by a human user;
detecting light from the barcode with an array of photosensitive elements in the imaging sensor to create imaging data during an exposure time period while the barcode is illuminated by a second illumination at least during a part of the exposure time period; and
processing the imaging data to decode an image of the barcode.
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Abstract
A method includes generating a first illumination with an illumination source, and directing the first illumination to pass through an aperture to generate an illumination pattern for defining an illumination field of view that is configured to indicate a boundary surrounding the imaging field of view of the imaging system. The intensity of the first illumination changes with time. The intensity variation of the illumination pattern is perceivable by a human user. The method also includes detecting light from the barcode with the imaging sensor to create imaging data while the barcode is illuminated by a second illumination, and processing the imaging data to decode an image of the barcode.
13 Citations
20 Claims
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1. A method of decoding a barcode within an imaging field of view of an imaging system that includes an imaging sensor, the method comprising:
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generating a first illumination with an illumination source; directing the first illumination to pass through an aperture to generate an illumination pattern for defining an illumination field of view that is configured to indicate a boundary surrounding the imaging field of view of the imaging system, wherein the first illumination is configured to have the intensity thereof change with time to cause an intensity variation of the illumination pattern, with the intensity variation being perceivable by a human user; detecting light from the barcode with an array of photosensitive elements in the imaging sensor to create imaging data during an exposure time period while the barcode is illuminated by a second illumination at least during a part of the exposure time period; and processing the imaging data to decode an image of the barcode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A apparatus comprising:
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an imaging lens arrangement; an imaging sensor including an array of photosensitive elements configured to operate together with the imaging lens arrangement for detecting light from a target object within an imaging field of view; means for generating a first illumination; means for directing the first illumination to pass through an aperture to generate an illumination pattern for defining an illumination field of view that is configured to indicate a boundary surrounding the imaging field of view, wherein the first illumination is configured to have the intensity thereof vary with time to cause an intensity fluctuation of the illumination pattern, with the intensity fluctuation being perceivable by a human user; means for detecting light from a barcode on the target object with the array of photosensitive elements in the imaging sensor to create imaging data during an exposure time period while the barcode is illuminated by a second illumination at least during a part of the exposure time period; and means for processing the imaging data to decode an image of the barcode.
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14. A apparatus comprising:
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an imaging lens arrangement; an imaging sensor including an array of photosensitive elements configured to operate together with the imaging lens arrangement for detecting light from a target object within an imaging field of view; an illumination source for generating a first illumination; an aperture configured for generating an illumination pattern for defining an illumination field of view when the first illumination passes through the aperture, wherein the illumination field of view is configured to indicate a boundary surrounding the imaging field of view; and a controller for changing the intensity of the first illumination with time to cause an intensity variation of the illumination pattern, with the intensity variation being perceivable by a human user, for detecting light from a barcode on the target object with the array of photosensitive elements in the imaging sensor to create imaging data during an exposure time period while the barcode is illuminated by a second illumination at least during a part of the exposure time period, and for processing the imaging data to decode an image of the barcode. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification