Lens Control Apparatus Zoom Speed Adaptation
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Solution Overview
Problem
Image capturing systems experience poor zooming stop responsiveness and operability when operated using an external apparatus, leading to deviations in the actual zoom position from the selected position, especially when compared to manual operation using switches on the image capturing apparatus.
Innovation Solution
A lens control apparatus with an operation input unit, communication unit, and control unit that accepts user operations or zoom control signals, allowing for different zoom position changing speeds based on the input method, with slower speeds for external control to improve responsiveness and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the image capturing apparatus is operated using an information processing apparatus via wireless communication, then remote control functionality is achieved, but the zooming stop responsiveness deteriorates and the actual zoom position deviates from the selected position
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the zoom position changing speed based on the operation source. When a zoom control signal is received from an external apparatus, the control unit sets the zoom position changing speed to a value lower than when operating via the built-in operation input unit. This parameter adjustment compensates for the communication delay and improves zooming stop responsiveness, ensuring the actual zoom position closely matches the selected position.
2Productivity
If the zoom position changing speed is increased for fast response, then productivity is improved, but the zoom position accuracy deteriorates when operated from external apparatus
Solution Approach 1:
The patent implements dynamics by making the zoom position changing speed variable rather than fixed. The control unit dynamically adjusts the speed parameter based on the operation source: using a higher speed for built-in operation input and a lower speed for external apparatus control. This dynamic adjustment allows the system to optimize both productivity and precision depending on the operational context.
3Ease of operation
If the process is simplified for direct operation, then ease of operation is improved, but the responsiveness to stop command deteriorates when controlled externally
Solution Approach 1:
The patent applies local quality by implementing different operational characteristics for different operation sources. The control unit identifies whether the operation comes from the built-in operation input unit or an external apparatus, and then applies locally optimized parameters: standard zoom position changing speed for built-in operations and reduced speed for external operations. This allows each operation source to have its own optimized behavior, maintaining ease of operation while improving stop responsiveness for external control.
Data Source
AI summary
A lens control apparatus includes an operation input unit, a communication unit, and a control unit. The operation input unit is configured to accept a user operation. The communication unit is configured to perform communication with an external apparatus. The control unit is configured to perform driving control of a zoom lens in response to a zoom operation accepted by the operation input unit or a zoom control signal received by the communication unit. The control unit is also configured to selectively set a zoom position changing speed for driving control performed in response to the zoom operation and a zoom position changing speed for driving control performed in response to the zoom control signal, the zoom position changing speeds being different from each other.