Image Reader Error Notification Timing During Reading
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Solution Overview
Problem
Existing image readers without displays face challenges in determining appropriate times for error notifications during reading processes, and subsequent errors complicate the timing of these notifications.
Innovation Solution
An image reader system with a transparent plate, reading unit, and controller that determines error notification timing based on occurrence conditions, allowing interruptions or post-completion notifications depending on the error type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If error notification process is performed by interrupting reading process, then error notification timing is improved, but reading productivity deteriorates
Solution Approach 1:
The system changes the parameter of error notification timing based on the type of error detected. For critical errors that prevent reading completion, the notification is delivered immediately by interrupting the reading process. For non-critical errors that allow reading to complete, the notification is delivered after reading completion, thus maintaining reading productivity while ensuring appropriate error notification.
2Productivity
If error notification process is performed after reading process completion, then reading productivity is maintained, but error notification timing deteriorates
Solution Approach 1:
The notification timing parameter is dynamically adjusted based on error severity. When errors occur that do not prevent reading completion (such as minor sensor issues or positioning deviations), the system maintains normal reading operation and delivers notifications after completion, thus preserving productivity while providing timely error awareness.
3Reliability
If multiple errors occur during error notification process, then error detection capability is improved, but system complexity increases
Solution Approach 1:
The error handling system is segmented into distinct error types with predetermined notification strategies. The controller categorizes errors into those requiring immediate interruption and those allowing completion, applying different notification timing rules to each category. This segmentation simplifies the handling of multiple concurrent errors by treating them as independent, categorized events rather than requiring complex interactive resolution.
4Reliability
If reading process is interrupted for error notification, then error awareness is improved, but time loss increases
Solution Approach 1:
The notification timing parameter is optimized based on error impact assessment. For errors that critically affect reading accuracy or completeness, immediate interruption provides timely error awareness. For less critical errors, deferred notification after completion minimizes time loss while still providing necessary error information to the user.
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
Enables timely and appropriate error notifications by interrupting or completing reading processes based on predefined conditions, ensuring efficient error handling and user awareness of system states.
Implementation Method 1
The reading unit includes a light source configured to emit light toward the transparent plate
Implementation Method 2
When light emitted from the light source of the reading unit is reflected by a read target object placed on the transparent plate, and the reflected light is incident on the image sensor of the reading unit, photoelectric conversion is performed by each light receiving element
Data Source
AI summary
An image reader includes a transparent plate having a placement surface configured to support a read target object placed thereon, a reading unit including a light source configured to emit light toward the transparent plate, and a controller. The controller is configured to perform a reading process to cause the reading unit to read the read target object placed on the placement surface of the transparent plate. The controller is further configured to, in response to occurrence of an error, perform an error notification process to cause the reading unit to perform an error notification operation. The controller is further configured to, depending on one or more occurrence conditions for the error that has occurred while the reading unit is in use, determine whether to perform the error notification process by interrupting the use of the reading unit or after the use of the reading unit is completed.