Picture taking optical reader
First Claim
Patent Images
1. A bar code reader comprising:
- an image sensor;
a control circuit in communication with said image sensor and controlling said image sensor to include first and second frame exposure periods, said first and second frame exposure periods being overlapping such that said second frame exposure period commences prior to a time that said first frame exposure period terminates;
at least one illumination light source for use in projecting an illumination pattern;
at least one aiming light source for use in projecting an aiming pattern,wherein said control circuit in at least one operating mode coordinates control of said at least one aiming light source so that said at least one aiming light source is turned ON during said first frame exposure period while being selectively turned OFF during a portion of said first frame exposure period at which time pixels of said image sensor corresponding to said aiming pattern are being exposed, wherein said control circuit further in said at least one operating mode coordinates control of said at least one aiming light source so that said at least one aiming light source is turned ON during said second frame exposure period while being selectively turned OFF during a portion of said second frame exposure period at which time pixels of said image sensor corresponding to said aiming pattern are being exposed.
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Abstract
An optical reader having a picture taking mode and a decode mode. In a picture taking mode, the reader captures and outputs a frame of image data without attempting to decode a decodable symbol in the frame. In the decode mode, the reader captures a frame of image data and attempts to decode a decodable symbol represented in the frame. The reader may have a decode mode in which light from an aiming light source is received by an image sensor.
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Citations
16 Claims
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1. A bar code reader comprising:
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an image sensor; a control circuit in communication with said image sensor and controlling said image sensor to include first and second frame exposure periods, said first and second frame exposure periods being overlapping such that said second frame exposure period commences prior to a time that said first frame exposure period terminates; at least one illumination light source for use in projecting an illumination pattern; at least one aiming light source for use in projecting an aiming pattern, wherein said control circuit in at least one operating mode coordinates control of said at least one aiming light source so that said at least one aiming light source is turned ON during said first frame exposure period while being selectively turned OFF during a portion of said first frame exposure period at which time pixels of said image sensor corresponding to said aiming pattern are being exposed, wherein said control circuit further in said at least one operating mode coordinates control of said at least one aiming light source so that said at least one aiming light source is turned ON during said second frame exposure period while being selectively turned OFF during a portion of said second frame exposure period at which time pixels of said image sensor corresponding to said aiming pattern are being exposed. - View Dependent Claims (2, 3, 4, 5)
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6. A portable bar code reading apparatus comprising:
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an image sensor; a lens assembly; wherein said portable bar code reading apparatus is configured to control said image sensor to include first and second frame exposure periods, said first and second frame exposure periods being overlapping such that said second frame exposure period commences prior to a time that said first frame exposure period terminates; at least one illumination light source for use in projecting an illumination pattern; at least one aiming light source for use in projecting an aiming pattern, wherein said portable bar code reading apparatus in at least one operating mode coordinates control of said at least one aiming light source so that said at least one aiming light source is ON during said first frame exposure period while being selectively turned OFF during a portion of said first frame exposure period at which time pixels of said image sensor corresponding to said aiming pattern are being exposed, wherein said portable bar code reading apparatus further in said at least one operating mode coordinates control of said at least one aiming light source so that said at least one aiming light source is turned ON during said second frame exposure period while being selectively turned OFF during a portion of said second frame exposure period at which time pixels of said image sensor corresponding to said aiming pattern are being exposed. - View Dependent Claims (7, 8, 9)
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10. A portable bar code reading apparatus comprising:
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an image sensor; a lens assembly; wherein said portable bar code reading apparatus is configured to control said image sensor to include first and second frame exposure periods, said first and second frame exposure periods being overlapping such that said second frame exposure period commences prior to a time that said first frame exposure period terminates; a first pattern light source for use in projecting a first light pattern over a first area; a second pattern light source for use in projecting a second light pattern over a second area, the second area being smaller than said first area, the portable bar code reading apparatus being configured so that said first light pattern can be projected without said second light pattern being projected and further being configured so that said second light pattern can be projected without said first light pattern being projected, wherein said portable bar code reading apparatus in at least one operating mode coordinates control of said second pattern light source so that said first pattern light source is ON during said first frame exposure period while being selectively turned OFF during a portion of said first frame exposure period at which time pixels of said image sensor corresponding to said second light pattern are being exposed, wherein said portable bar code reading apparatus further in said at least one operating mode coordinates control of said second pattern light source so that said second pattern light source is turned ON during said second frame exposure period while being selectively turned OFF during a portion of said second frame exposure period at which time pixels of said image sensor corresponding to said second light pattern are being exposed. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification