Camera Exposure Vibration Timing for Long-Exposure Recognition
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Solution Overview
Problem
Image pickup apparatuses with electronic shutters struggle to inform users about the start and end of long exposure, as the single vibration generated by existing vibration devices is not distinct enough to differentiate between these phases.
Innovation Solution
Implementing an image pickup apparatus with an electronic front curtain operation to start charge accumulation and an electronic rear curtain operation to finish, accompanied by controlled vibrations before and after charge accumulation, respectively, to signal the start and end of exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single vibration is generated by the vibration device during long exposure, then the vibration intensity does not affect imaging, but the user cannot clearly recognize both the start and end of charge accumulation
Solution Approach 1:
The single vibration event is segmented into two distinct vibrations: a first vibration generated before charge accumulation starts, and a second vibration generated after charge accumulation ends. This segmentation allows the user to clearly recognize both the start and end of the long exposure period while maintaining sufficient vibration intensity for user perception.
Solution Approach 2:
The first vibration is generated in advance before the charge accumulation starts, serving as a preliminary notification to the user that the long exposure is about to begin. This preliminary action ensures the user is aware of the exposure timing without the vibration occurring during the actual imaging process.
2Loss of information
If vibration is generated simultaneously with shutter button operation, then the user can recognize imaging timing, but the vibration may affect long exposure imaging
Solution Approach 1:
The vibration notification function is extracted from the shutter button operation timing and repositioned to occur before charge accumulation starts and after it ends. This extraction separates the user notification function from the imaging process, allowing clear timing recognition without compromising image quality during long exposure.
Solution Approach 2:
The vibration is generated as a preliminary action before the charge accumulation begins, rather than simultaneously with shutter button operation. This timing adjustment ensures the vibration serves its notification purpose while occurring outside the critical imaging period.
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
Enables users to clearly recognize the start and end of long exposure through differentiated vibrations, enhancing user experience without affecting image quality.
Implementation Method 1
a vibration generator configured to generate vibration
Data Source
AI summary
An image pickup apparatus includes an image sensor configured to receive light and accumulate charges, a vibration generator configured to generate vibration, an image sensor control unit configured to cause the image sensor to perform an electronic front curtain operation to start accumulating the charges, and an electronic rear curtain operation to finish accumulating the charges, and a vibration control unit configured to control the vibration generator. The vibration control unit causes the vibration generator to generate first vibration before accumulating the charges is started and second vibration after the accumulating the charges are finished.