Variable Charging Time for Mechanical Shutter Noise Reduction
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Solution Overview
Problem
Existing imaging apparatuses face challenges in achieving high-speed continuous shooting while minimizing noise during single shooting mode, as the rapid charging of mechanical shutters can produce discomforting sounds and vibrations.
Innovation Solution
The imaging apparatus employs a control section to manage the charging of the mechanical shutter's driving mechanism, with different charging time periods for continuous and single shooting modes, and utilizes Pulse Width Modulation (PWM) drive to adjust the motor's rotation speed and reduce noise during single shooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the charging operation is performed in a short time period to enable high speed continuous shooting, then the frame speed during continuous shooting is improved, but noise is generated during single shooting
Solution Approach 1:
The patent applies dynamics by making the charging time period variable rather than fixed. The control section dynamically adjusts the charging operation duration based on the shooting mode: using a first (shorter) time period for continuous shooting mode to achieve high frame speeds, and a second (longer) time period for single shooting mode to minimize noise. This dynamic adaptation allows the system to optimize performance for each specific operating condition.
Solution Approach 2:
The patent implements parameter changes by modifying the time period parameter of the charging operation according to the shooting mode. The control section changes the charging duration parameter between a first time period for continuous shooting and a second time period for single shooting. This parameter adjustment enables the system to achieve high productivity when needed while reducing harmful noise effects when operating in single shooting mode.
2Object-generated harmful factors
If the charging operation is performed in a long time period to reduce noise during single shooting, then noise is reduced, but frame speed decreases during continuous shooting
Solution Approach 1:
The system uses dynamic control to adjust the charging operation duration based on operational requirements. The control section detects the shooting mode and dynamically sets the appropriate charging time period, enabling the system to switch between noise-reduced operation for single shooting and high-speed operation for continuous shooting without compromise.
Solution Approach 2:
The patent changes the time period parameter of the charging operation based on the shooting mode. For single shooting mode, the control section sets a second (longer) time period to reduce noise. For continuous shooting mode, it sets a first (shorter) time period to maintain high frame speed. This conditional parameter change resolves the contradiction by adapting to different operational contexts.
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
This approach enables faster frame rates during continuous shooting and reduces noise during single shooting by optimizing the charging process, ensuring a smoother operation and user experience.
Implementation Method 1
a motor configured to provide a driving force for the driving mechanism
Data Source
AI summary
The imaging apparatus has a single shooting mode and a continuous shooting mode, and includes: an imaging element configured to generate image data; a mechanical shutter configured to control exposure of the imaging element; a charge block including a driving mechanism configured to drive the mechanical shutter and a motor configured to provide a driving force for the driving mechanism, and a control section configured to control the charge block. The control section performs a charging operation for charging the driving mechanism by causing the motor to rotate in a capturing operation, performs the charging operation in a first time period in a case where the imaging apparatus is in the continuous shooting mode, and performs the charging operation in a second time period which is longer than the first time period in a case where the imaging apparatus is in the single shooting mode.