Interchangeable Lens Initialization Sync for Camera Body Coordination
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Solution Overview
Problem
In interchangeable lens camera systems, there is a need for the imaging apparatus and interchangeable lens to appropriately perform initialization processes, especially when lenses with different specifications or new functions are added, as existing systems struggle to manage these variations effectively.
Innovation Solution
The camera system employs a method where the interchangeable lens and imaging apparatus exchange initialization execution element information to synchronize their initialization processes, allowing for appropriate initialization by identifying and managing the specific elements and their functions, including exposure influencing and non-influencing elements, through a series of flowcharts and data formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the imaging apparatus and interchangeable lens exchange initialization execution element information to coordinate initialization processes, then the system can appropriately perform initialization for lenses with different specifications and new functions, but the device complexity increases due to the need for information exchange and coordination protocols
Solution Approach 1:
The initialization process is segmented into distinct phases: the imaging apparatus transmits its initialization execution element information first, then the interchangeable lens transmits its own initialization execution element information in response. This segmentation allows each component to independently manage its initialization tasks while coordinating through structured information exchange, reducing the complexity of simultaneous multi-component initialization.
Solution Approach 2:
The imaging apparatus performs preliminary action by transmitting its initialization execution element information before the interchangeable lens begins its initialization. This preliminary transmission establishes the context and requirements for the lens's initialization process, allowing the lens to prepare appropriate responses and ensuring that both components are synchronized before actual initialization begins.
2Reliability
If the imaging apparatus waits for initialization execution element information from the interchangeable lens before proceeding, then proper synchronization is achieved, but the initialization time increases
Solution Approach 1:
The initialization process uses periodic action through structured request-response cycles. The imaging apparatus periodically transmits initialization execution element information, and the interchangeable lens responds periodically with its own initialization execution element information. This rhythmic exchange ensures synchronization while maintaining efficient timing by preventing unnecessary delays.
Solution Approach 2:
The interchangeable lens provides feedback by transmitting its initialization execution element information in response to the imaging apparatus's transmission. This feedback mechanism allows the imaging apparatus to adjust its initialization process based on the lens's capabilities and status, ensuring proper synchronization without excessive waiting time. The feedback loop enables both components to coordinate their initialization activities efficiently.
Data Source
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Figure 3A~3D
AI summary
Provided is a technology enabling an imaging apparatus and an interchangeable lens to appropriately perform initialization processes. An interchangeable lens includes a lens control unit configured to transmit lens-side initialization execution element information indicating a plurality of lens-side elements on which the lens control unit itself performs initialization to an imaging apparatus in response to reception of body-side initialization execution element information indicating body-side elements on which the imaging apparatus performs initialization from the imaging apparatus. The technology can be applied to, for example, a camera system including a detachable interchangeable lens and an imaging apparatus serving as a camera body side.