Live View Timing Control for Natural Motion Display
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Solution Overview
Problem
During high-speed continuous shooting with image capturing apparatuses, the smoothness of live view display is compromised due to variations in display delay time, causing unnatural object motion as the discrepancy between image capturing and display intervals leads to inconsistent timing for live view image display.
Innovation Solution
The control circuit sets the capturing timing of still images and display images such that at least one frame of the display image can be displayed with a predetermined delay time within the remaining time after capturing the still image, ensuring consistent display delay for live view images during continuous shooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the speed of continuous shooting is increased, then the productivity of image capturing is improved, but the smoothness of live view display deteriorates due to variation in display delay time
Solution Approach 1:
The patent applies dynamics by making the live view image capturing interval variable rather than fixed. The control circuit dynamically adjusts the capturing interval of live view images based on the display delay time calculated from the difference between display timing and capturing timing. This dynamic adjustment ensures that the live view display remains smooth and natural even when continuous shooting speed increases, resolving the contradiction between productivity and display reliability.
2Ease of operation
If the capturing interval of live view images is set independently of the display interval, then the ease of operation is improved, but the naturalness of object motion deteriorates due to discrepancy between capturing and display timing
Solution Approach 1:
The patent implements feedback by calculating the display delay time based on the difference between display timing and capturing timing, then using this calculated delay time to adjust the capturing interval of subsequent live view images. This feedback mechanism ensures that the capturing interval is automatically optimized to maintain natural object motion representation, resolving the contradiction between ease of operation and motion naturalness.
3Loss of time
If charge accumulation for live view image is performed immediately after still image readout, then the loss of time is reduced, but the consistency of display delay time worsens due to reference to still image capturing timing
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the capturing interval parameter of live view images based on the calculated display delay time. Instead of using a fixed interval referenced to still image capturing, the system changes the interval parameter to compensate for timing variations, ensuring consistent display delay time while minimizing time loss.
Data Source
AI summary
An image capturing apparatus that makes it possible to display a live view video in which motion of an object is naturally expressed during continuous shooting. An image capturing apparatus includes an image capturing unit including an image sensor, and a control circuit configured to capture a still image for storage and a display image for display on a display device, using the image capturing unit. In still image continuous shooting by the image capturing unit, the control circuit sets a capturing timing of the still image and then sets a capturing timing of the display image in a remaining time obtained by subtracting a time required to capture the still image from a period at which the still image is captured such that at least one frame of the display image can be displayed on the display device with a predetermined delay time.