Image Sensor Live View Cycle Adjustment for Continuous Shooting
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Solution Overview
Problem
During continuous shooting of still images, the live view (LV) display in image capturing apparatuses often freezes or experiences blackout due to overlapping shooting timings between still images and LV images, leading to unnatural motion blur and brightness differences.
Innovation Solution
The image capturing apparatus adjusts the cycle of LV image display to an integer multiple of the continuous shooting speed of still images, allowing simultaneous shooting and display of still images at a different cycle, thereby preventing overlapping shooting periods and enhancing LV display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image sensor continuously captures LV images at regular intervals for smooth live view display, then the LV display quality is improved, but when continuous shooting of still images is performed, the shooting timings overlap causing display freezing or blackout
Solution Approach 1:
The patent dynamically adjusts the LV image capture cycle based on shooting mode. When continuous still image shooting is detected, the system changes the LV capture cycle from a fixed regular interval to a variable cycle that avoids overlap with still image shooting timings, thereby maintaining both LV display continuity and continuous shooting capability
Solution Approach 2:
The system changes the temporal parameter (capture cycle) of LV image acquisition from a constant value to a variable value that adapts to the shooting mode. Specifically, when continuous shooting is active, the LV capture cycle is adjusted to an integer multiple of the still image shooting interval, preventing timing overlap and ensuring reliable operation of both functions
2Productivity
If still images captured under different shooting conditions are used for LV display to increase update frequency, then the LV display refresh rate is improved, but the display looks unnatural due to motion blur and brightness differences
Solution Approach 1:
The patent applies different quality characteristics to different image types. LV images are captured with settings optimized for continuous display (higher frequency, different exposure), while still images use settings optimized for photo quality. The system selectively applies each type to the LV display based on timing, ensuring that when still images are displayed, they do so under conditions that maintain natural appearance
Solution Approach 2:
The system dynamically selects which images to display in the LV based on capture timing and shooting mode. Rather than uniformly using still images for LV display, the system intelligently alternates between LV images and still images based on their respective capture cycles and timing, maintaining display naturalness while achieving high update frequency
Data Source
AI summary
An image capturing apparatus comprises an image sensor, and a controller that controls the image sensor to shoot images for display at a first cycle and controls to shoot a still image in response to the image shooting instruction. In a case where continuous shooting of still images is instructed during shooting the images for display at the first cycle, the controller changes a cycle at which the images for display are shot to a second cycle which corresponds to an integer multiple of speed of the continuous shooting while e continuous shooting is performed, and controls the image sensor to shoot the still images at the speed of the continuous shooting and shoot the images for display at the second cycle.