Camera Adapter Voltage Detection for Cross-Mount Lens Communication
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Solution Overview
Problem
Interchangeable-lens camera systems face challenges in communicating with lenses that do not support the standard communication protocol when mounted via an adapter, leading to communication failures and inability to recognize lens information.
Innovation Solution
A camera system with multiple contact units and communication units that detect voltage conditions to initiate appropriate communication protocols, including an adapter that provides the necessary voltage conditions for lenses supporting different communication standards, enabling seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an adapter is used to connect lenses with different mount shapes, then compatibility with various lenses is improved, but communication reliability deteriorates because the lens may not support the camera's communication standard
Solution Approach 1:
The adapter acts as an intermediary device between the camera and the interchangeable lens. It includes a detection unit that detects voltage from the lens to determine communication compatibility, and a control unit that switches between first communication (direct camera-lens) and second communication (camera-adapter-lens) based on the detection result. This mediator approach enables the adapter to bridge communication protocols between incompatible devices.
Solution Approach 2:
The system changes communication parameters dynamically based on detection results. The control unit switches communication modes (first or second communication) depending on whether the lens voltage indicates compatibility with the camera's communication standard. This parameter switching allows the system to adapt communication protocols to match the connected lens's capabilities.
2Device complexity
If the camera uses a fixed communication standard, then communication simplicity is improved, but adaptability to different lens communication standards deteriorates
Solution Approach 1:
The communication system transitions from a static fixed standard to a dynamic adaptive system. The control unit dynamically switches between first communication (camera's native standard) and second communication (adapter-mediated standard) based on real-time voltage detection results. This dynamic adaptation maintains simplicity by default while enabling compatibility when needed.
Solution Approach 2:
The camera is designed with multi-functionality to support both first communication (direct camera-lens communication) and second communication (camera-adapter-lens communication). The communication unit can perform either type of communication depending on the connected accessory, making the camera universally compatible with both direct-attach and adapter-attach scenarios.
3Adaptability or versatility
If the adapter includes complex communication switching logic, then communication compatibility is improved, but adapter complexity increases
Solution Approach 1:
The adapter performs self-service by automatically detecting lens voltage and switching communication modes without requiring user configuration. The detection unit monitors voltage levels, and the control unit autonomously determines whether to use first or second communication based on detected values. This eliminates the need for manual adapter setup or complex user-facing configuration options.
Solution Approach 2:
The system implements feedback through voltage detection. The detection unit continuously monitors voltage from the connected lens, providing feedback to the control unit. Based on this feedback, the control unit adjusts communication mode selection. This closed-loop feedback mechanism enables automatic adaptation without requiring the adapter to pre-know lens specifications.
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 communication with lenses that do not support the direct camera-lens communication standard by using adapters that supply the required voltage conditions, allowing for successful lens recognition and control without complicating the adapter's configuration.
Implementation Method 1
a detection unit configured to detect a voltage of the second contact unit after a respective accessory among the plurality of accessories has been connected
Implementation Method 2
the predetermined adapter is configured to, when connected to the apparatus, provide the second contact unit with a voltage that satisfies the first condition
Data Source
AI summary
There is provided an apparatus having a first contact unit and a second contact unit. A first communication unit performs first communication via the first contact unit. A second communication unit performs second communication via the first contact unit. A detection unit detects a voltage of the second contact unit after a respective accessory among a plurality of accessories has been connected. A control unit performs control to start the second communication in a case where the detected voltage of the second contact unit satisfies a first condition. The predetermined adapter is configured to, when connected to the apparatus, provide the second contact unit with a voltage that satisfies the first condition.