US 12,361,240 B2 · Method and system for reducing perceived illumination flicker in multi-sensor barcode scanners

Abstract

The present disclosure describes methods and systems for reducing perceived flickering in multi-sensor barcode scanners. The proposed solution introduces a dummy illumination pulse during transitions between sensors or frames, mitigating noticeable flicker. The timing, duration, and spacing of the dummy pulse are calculated based on factors such as the next expected exposure, frame rate, and/or previous exposure. This solution can be applied to a variety of barcode scanners, including those with different sensors for near and far scanning or those using different LEDs for capturing frames. The system also potentially includes an illumination boost circuitry that recharges during the generation of the dummy illumination pulse, preventing system faults. The method offers an effective solution to illumination flicker in multi-sensor barcode scanners without causing unnecessary delays or system errors.

Claims20

Dependent claims

A method for reducing perceived illumination flicker in an imaging-based data capture device, the method comprising the steps of:

performing a first image-capture operation including a last frame of the first image-capture operation;
subsequent to performing the first image-capture operation, performing a second image-capture operation including a first frame of the second image-capture operation;
and
inserting at least one dummy illumination pulse during the last frame of the first image-capture operation, wherein a number N of the at least one dummy illumination pulses is based on at least one of a frame transmission time of the last frame of the first image-capture operation or an exposure duration of the first frame of the second image-capture operation.

1 more element

An imaging-based data capture device comprising:

an imaging-based data acquisition assembly;
an illumination assembly configured to provide illumination for imaging-based data acquisition assembly;
a processor communicatively coupled to the imaging-based data acquisition assembly and the illumination assembly;
and
a memory communicatively coupled to the processor, the memory storing machine-readable instructions that, when executed by the processor, cause the imaging-based data capture device to:
perform, via the imaging-based data acquisition assembly, a first image-capture operation including a last frame of the first image-capture operation;
perform, via the imaging-based data acquisition assembly, a second image-capture operation including a first frame of the second image-capture operation;
and
insert at least one dummy illumination pulse, provided by the illumination assembly, during the last frame of the first image-capture operation, wherein a number N of the at least one dummy illumination pulses is based on at least one of a frame transmission time of the last frame of the first image-capture operation or an exposure duration of the first frame of the second image-capture operation.

6 more elements

Dependencies are inferred from the claim text.

Method and system for reducing perceived illumination flicker in multi-sensor barcode scanners

Life of this patent

Method and system for reducing perceived illumination flicker in multi-sensor barcode scanners

Life of this patent

Abstract

Claims20