Zoom Control Device Smoothing Magnification Speed
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Solution Overview
Problem
Users inexperienced with zoom operations in camera systems often inadvertently cause sudden zoom changes, leading to uncomfortable viewing experiences due to inappropriate zoom speeds, and slowing down zoom speeds uniformly is not practical as it may result in delayed responses and increased operation time.
Innovation Solution
A zoom control device and method that sets and smooths the zoom magnification ratio change speed for both main and monitoring images based on user operations, allowing for smooth zoom control on the main image while reflecting actual zoom operations on the monitoring image, using a combination of optical and electronic zoom controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If zoom speed is slowed down uniformly to prevent sudden zoom changes, then viewer comfort is improved, but operation response time increases and zoom operations become delayed
Solution Approach 1:
The patent applies different zoom speed control strategies to different images: the monitoring image uses the original fast zoom speed for real-time feedback, while the main recorded image uses a smoothed slower zoom speed for comfort. This local differentiation resolves the contradiction by allowing fast response where needed and comfortable viewing where required.
Solution Approach 2:
The patent segments the zoom control into two independent control paths: one for the monitoring image and one for the main image. By separating these control paths, the system can apply different speed characteristics to each without affecting the other, thus maintaining both responsiveness and comfort.
2Stability of the object's composition
If zoom speed is reduced for smooth transitions, then sudden zoom changes are prevented, but the overall operation time is prolonged
Solution Approach 1:
The monitoring image maintains the original zoom speed to reflect user operations in real-time, while the main image applies smoothed zoom speed for stable transitions. This local quality differentiation allows the system to achieve smooth transitions in recorded content without prolonging the overall operation duration.
Solution Approach 2:
The system performs preliminary smoothing of the zoom magnification ratio change speed before applying it to the main image, while the monitoring image displays the unsmoothed real-time zoom. This preliminary action ensures smooth transitions are prepared in advance without affecting the real-time feedback display.
3Ease of operation
If monitoring image shows real-time zoom operations, then user feedback is improved, but recorded main image may show uncomfortable sudden zoom changes
Solution Approach 1:
The patent segments the zoom control into two independent paths: monitoring image control for real-time user feedback and main image control for comfortable recorded output. Each path can be optimized independently, allowing real-time feedback without compromising recorded quality.
Solution Approach 2:
The monitoring image uses original zoom speed for immediate user feedback, while the main image uses smoothed zoom speed for comfortable viewing. This local quality differentiation ensures that each image serves its specific purpose optimally without compromising the other.
Data Source
AI summary
A zoom control device includes: a zoom magnification ratio change speed setting unit that sets a main image zoom magnification ratio change speed and a monitoring image zoom magnification ratio change speed according to a zoom operation by a user; and a zoom control unit that conducts a zoom control on a main image so that a zoom magnification ratio changes according to the main image zoom magnification ratio change speed, and conducts a zoom control on a monitoring image so that the zoom magnification ratio changes according to the monitoring image zoom magnification ratio change speed. The zoom magnification ratio change speed setting unit is configured to set the main image zoom magnification ratio change speed by smoothing the monitoring image zoom magnification ratio change speed.