Imaging System Illumination Voltage Feedback Control
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Solution Overview
Problem
Conventional bounce flash photography techniques fail to prevent inadequate flash photographing when the light emitting unit is not in a suitable state, leading to partially irradiated images due to the inability to detect the status of the light emitting unit during image capture.
Innovation Solution
An imaging system that includes an illumination apparatus with a light emitting unit, a movable unit, a driving unit, a calculating unit, and a transmitting unit to determine the illumination direction and notify the imaging apparatus if the charged voltage is insufficient, preventing flash photography when the voltage is below a predetermined level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the imaging apparatus performs flash photographing without detecting the light emitting unit state, then the photographing operation is simple and quick, but inadequate flash photographing occurs when the capacitor voltage is insufficient
Solution Approach 1:
The transmitting unit sends voltage information to the imaging apparatus before the flash photographing is executed. This preliminary transmission of capacitor voltage status allows the imaging apparatus to determine whether the voltage meets the required threshold before initiating the flash, preventing inadequate photographing while maintaining operational efficiency.
Solution Approach 2:
The system implements a feedback mechanism where the transmitting unit continuously monitors and transmits capacitor voltage information to the imaging apparatus. This feedback loop enables the imaging apparatus to make informed decisions about whether to proceed with flash photographing based on real-time voltage status, ensuring reliable operation.
2Reliability
If the transmitting unit always transmits accurate voltage information, then the flash photographing reliability is improved, but the communication overhead and system complexity increases
Solution Approach 1:
The transmitting unit selectively transmits voltage information based on local conditions - specifically, it transmits information indicating insufficient voltage only when the capacitor voltage is below the required threshold. This selective transmission approach maintains reliability by providing necessary information while reducing unnecessary communication overhead when voltage is adequate.
Data Source
AI summary
An imaging system includes an illumination apparatus and imaging apparatus, and the illumination apparatus includes a light emitting unit, a movable unit including the light emitting unit, and configured to be rotatably held to a main body unit, a driving unit configured to drive the movable unit, a calculating unit configured to calculate an illumination direction of the light emitting unit, and a transmitting unit configured to transmit, to the imaging apparatus, information about a charged voltage of a capacitor for storing energy to cause the light emitting unit to emit light. The transmitting unit transmits, to the imaging apparatus, information indicating that the charged voltage of the capacitor is less than the predetermined value, when the driving unit is used to drive the movable unit to cause the calculating unit to calculate the illumination direction, even if the charged voltage of the capacitor is a predetermined value or more.