Camera Anti-Shake Module Timing for Power Reduction
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Solution Overview
Problem
Conventional anti-shake camera technologies face challenges in efficiently reducing power consumption and optimizing the operation of anti-shake modules during image capture, leading to potential blurring due to user movements like breathing or pressing the shutter button too hard.
Innovation Solution
A camera design that triggers an anti-shake enable signal prior to image exposure, enabling the anti-shake module to compensate for camera shake, and includes a mechanical shutter that is disabled and closed during exposure to reduce power consumption and enhance image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the anti-shake module is enabled continuously during all operations, then image stability is improved, but power consumption increases
Solution Approach 1:
The anti-shake module is enabled in advance during the auto-focus operation, which occurs before the actual image exposure. This preliminary activation ensures the anti-shake mechanism is ready to compensate for any shake during exposure, while limiting operation to only the necessary time window, thus balancing image stability with power consumption reduction.
2Measurement precision
If the anti-shake module operates during auto-focus, then focus accuracy is improved, but unnecessary power consumption occurs
Solution Approach 1:
The system automatically determines when to enable the anti-shake module based on the operational state. The control unit detects whether the camera is in auto-focus mode or image exposure mode and activates the anti-shake module only when needed, eliminating the need for manual intervention and avoiding unnecessary power consumption during auto-focus operations.
3Use of energy by moving object
If the mechanical shutter remains open during exposure, then light capture is maximized, but image clarity decreases due to camera shake
Solution Approach 1:
The anti-shake module is activated before the image exposure begins, during the auto-focus phase. This preliminary activation creates a counter-action to any potential camera shake that might occur during exposure, allowing the mechanical shutter to remain open for optimal light capture while the anti-shake mechanism pre-positioned the lens element to compensate for anticipated movements.
Data Source
AI summary
A camera having a shutter button, a photo sensor array, an anti-shake module controlled by an anti-shake enable signal, and a mechanical shutter. By pressing the shutter button, a first operation and a second operation are provided to trigger an auto-focus enable signal and an image exposure control signal, respectively. The anti-shake enable signal is enabled when the auto-focus enable signal has been triggered and the image exposure control signal is disabled or has just been triggered. The photo sensor array performs image exposure according to the image exposure control signal. The mechanical shutter is disabled and closed after the image exposure control signal is triggered for exposure period.