Dynamic ISO Sensitivity Control Range Adjustment
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Solution Overview
Problem
Existing image capturing apparatuses limit users in setting ISO sensitivity and other exposure control values within a predetermined range, making it difficult to achieve intended exposure settings without manual adjustment of upper and lower limits.
Innovation Solution
The apparatus allows users to independently set control upper and lower limits for automatic sensitivity change, enabling ISO sensitivity settings outside the predefined range, thereby allowing for flexible exposure control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control upper limit sensitivity and control lower limit sensitivity are set to restrict automatic sensitivity change, then the reliability of exposure control is improved, but the adaptability of sensitivity setting is worsened
Solution Approach 1:
The patent makes the sensitivity control range dynamic by allowing it to be automatically adjusted based on shooting conditions. The control upper limit sensitivity and control lower limit sensitivity are no longer fixed but are determined dynamically according to the relationship between available light and required exposure, enabling the system to adapt to different shooting scenarios while maintaining reliable exposure control.
Solution Approach 2:
The patent changes the parameters of sensitivity control by introducing a new determination method where the control upper limit sensitivity and control lower limit sensitivity are calculated based on shooting condition parameters (available light, required exposure). This parameter transformation allows the system to expand or contract the sensitivity control range dynamically, resolving the contradiction between reliable control and adaptive setting.
2Adaptability or versatility
If the sensitivity control range is expanded to allow broader ISO settings, then the adaptability of sensitivity setting is improved, but the time required for setting adjustments is worsened
Solution Approach 1:
The patent implements self-service by enabling the camera system to automatically determine and adjust the sensitivity control range without user intervention. The control upper limit sensitivity and control lower limit sensitivity are automatically calculated based on shooting conditions, eliminating the need for manual range expansion and reducing setting adjustment time to zero.
Solution Approach 2:
The patent performs preliminary action by pre-calculating the appropriate sensitivity control range before the user needs to make adjustments. The system proactively determines the control upper limit sensitivity and control lower limit sensitivity based on current shooting conditions, so when the user wants to change sensitivity, the appropriate range is already prepared and immediately available.
3Reliability
If manual adjustment of control limits is required to change sensitivity range, then the reliability of control range management is improved, but the ease of operation is worsened
Solution Approach 1:
The system performs self-service by automatically managing the sensitivity control range without requiring manual user adjustments. The control upper limit sensitivity and control lower limit sensitivity are autonomously determined based on shooting conditions, eliminating the need for users to manually adjust control limits while maintaining reliable range management.
Solution Approach 2:
The patent implements feedback by continuously monitoring shooting conditions (available light, required exposure) and using this information to automatically adjust the sensitivity control range. The system receives feedback from the shooting environment and responds by appropriately setting the control upper limit sensitivity and control lower limit sensitivity, making the system both reliable and easy to operate.
Data Source
Figure 1
Figure 2A~2C
Figure 2D~2F
AI summary
If an exposure control value set according to a user's instruction is out of an exposure control value control range set according to a user's instruction, the exposure control value control range is changed to a range including the exposure control value set according to the user's instruction.