Barcode Reader Dual Linear Sensors Simultaneous Capture
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Solution Overview
Problem
Existing barcode reading devices are complex and costly due to the need for intricate adjustable optics or multiple image sensors, which complicate the capture of decodable data at various working distances.
Innovation Solution
A barcode reader with two linear imaging sensors and a controller that simultaneously captures light from different fields of view, allowing for reduced complexity and cost by using fixed focus optical assemblies and a single controller output channel to activate both sensors simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple image sensors are used to capture data at various working distances, then the reading capability across different distances is improved, but the device complexity and cost increase due to requiring separate drivers for each sensor
Solution Approach 1:
The patent combines multiple image sensors (first and second linear image sensors) under a single controller that uses a single output channel to activate both sensors simultaneously. This merging approach eliminates the need for separate drivers for each sensor, thereby reducing device complexity while maintaining the capability to capture barcode data at various working distances through the different fields of view provided by each sensor.
2Adaptability or versatility
If intricate adjustable optics are used to alter working distance, then the adaptability to different working distances is improved, but the computing power and processing requirements increase
Solution Approach 1:
The patent segments the optical system into multiple fixed-focus optical assemblies, each optimized for a specific working distance range. The first optical assembly with its linear image sensor captures data at one working distance, while the second optical assembly with its linear image sensor captures data at another working distance. This segmentation eliminates the need for complex adjustable optics and high computing power for real-time focus adjustment, as each assembly is statically optimized for its designated range.
3Adaptability or versatility
If multiple image sensors with separate drivers are used, then the capture capability at various parameters is improved, but the cost and complexity increase
Solution Approach 1:
The patent implements a universal controller that can activate and control multiple image sensors through a single output channel. This multi-functional controller serves all sensors simultaneously, eliminating the need for separate dedicated drivers for each sensor. This approach reduces component count and manufacturing complexity while maintaining the enhanced capture capability across different working distances that multiple sensors provide.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables efficient and cost-effective barcode reading across various working distances with reduced power and computing consumption, improving the duration from trigger activation to barcode decoding.
Implementation Method 1
simultaneously cause both of the first linear imaging sensor and the second linear imaging sensor to respectively capture light from the first FOV and the second FOV
Data Source
AI summary
Embodiments of the present invention generally relate to the field of barcode readers, and more particularly, to barcode readers having multiple linear image sensors. In an embodiment, a barcode reader includes a first optical assembly including a first linear imaging sensor, a second optical assembly including a second linear imaging sensor, and a controller connected configured to: simultaneously cause both of the first linear imaging sensor and the second linear imaging sensor to respectively capture light from a first FOV and a second FOV for a predetermined amount of time, and simultaneously capture a first output signal from the first linear imaging sensor and a second output signal from the second linear imaging sensor.