Imaging Apparatus Shutter Control for Continuous Capture Speed
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Solution Overview
Problem
Conventional imaging apparatuses experience low continuous capturing speed during live-view due to multiple stop and deceleration periods, including charge completion, read standby, and imaging bound lock phases.
Innovation Solution
An imaging apparatus with a blade member, drive member, urging member, motor, and image sensor, controlled by a controller that manages the motor and image sensor to optimize the blade member's charge and exposure opening operations, reducing motor stoppages and decelerations through specific rotational directions and voltage control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the motor is driven in conventional imaging apparatus to operate the blade member through charge, exposure, and return phases, then the shutter function is achieved, but the continuous capturing speed decreases due to multiple stop and deceleration periods
Solution Approach 1:
The blade member is pre-charged to the fully charged state before the imaging operation begins. This preliminary charging action ensures that when the imaging sequence starts, the blade is already in the correct position to immediately open for exposure without requiring intermediate stopping or deceleration, thereby maintaining continuous capturing speed
Solution Approach 2:
The motor drives the blade member through a continuous rotational sequence without stopping or decelerating at intermediate positions. The blade member rotates from the fully charged state through the exposure phase directly to the return phase, eliminating the multiple stop and deceleration periods that would otherwise interrupt the continuous capturing action
2Area of moving object
If the blade member is charged completely before imaging in conventional apparatus, then the exposure opening can be made large, but the motor must stop or decelerate during charge completion phases reducing capturing speed
Solution Approach 1:
The blade member is pre-charged to the fully charged state before the imaging operation begins. This preliminary charging action ensures that when the imaging sequence starts, the blade is already in the correct position to immediately open for exposure without requiring intermediate stopping or deceleration, thereby maintaining continuous capturing speed
Solution Approach 2:
The motor drives the blade member through a continuous rotational sequence without stopping or decelerating at intermediate positions. The blade member rotates from the fully charged state through the exposure phase directly to the return phase, eliminating the multiple stop and deceleration periods that would otherwise interrupt the continuous capturing action
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances continuous capturing speed by minimizing motor stoppages and decelerations, thereby improving the frame rate and focus detection accuracy in both finder imaging and live-view modes.
Implementation Method 1
a first urging member configured to change the blade member to a charge state according to a rotation of the drive member
Data Source
AI summary
An imaging apparatus includes a controller configured to control a motor and an image sensor. The controller rotates the motor in a first direction as reading of a signal corresponding to first imaging starts for one frame using the image sensor, and charges the first urging member and the blade member. The controller rotates the motor in a second direction reverse to the first direction after a charge of the blade member by the first urging member is completed, completes reading the signal corresponding to the first imaging before opening the exposure opening, and stops rotating the motor in the second direction.