Dual Communication Paths for Camera Lens Optical Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing camera system communication technology fails to transmit interchangeable lens control signals at the intended timing, leading to suboptimal control of optical members in the lens, particularly when intermediate accessories with new designs are combined with older camera main body designs, resulting in inefficient focus driving and aperture driving.
Innovation Solution
The implementation of a dual communication control system with separate paths for the camera main body, interchangeable lens, and intermediate accessories, allowing for simultaneous and timely communication of optical information and control signals, enabling accurate and high-speed control of optical members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single communication path is used between camera main body, interchangeable lens, and intermediate accessory, then device complexity is reduced, but communication timing accuracy and control precision deteriorate
Solution Approach 1:
The communication system is segmented into two independent communication paths: a first communication path between the camera main body and interchangeable lens, and a second communication path between the camera main body and intermediate accessory. This segmentation allows simultaneous communication without interference, resolving the timing accuracy issue while maintaining manageable complexity through modular design.
Solution Approach 2:
The camera main body acts as an intermediary that receives optical information from the intermediate accessory via the second communication path, processes it with stored optical information, and transmits the corrected optical information to the interchangeable lens through the first communication path. This intermediary role enables accurate timing control by separating the information gathering and information transmission functions.
2Adaptability or versatility
If optical information correction is performed by the intermediate accessory, then adaptability to new accessory designs is improved, but communication timing coordination becomes more difficult
Solution Approach 1:
The camera main body performs preliminary action by storing optical information of the interchangeable lens in advance and receiving optical information from the intermediate accessory before final correction. This allows the system to prepare for correction operations ahead of time, improving adaptability while simplifying real-time communication coordination.
Solution Approach 2:
Instead of having the intermediate accessory perform correction and communicate results back, the system inverts the flow by having the camera main body receive raw optical information from the intermediate accessory, perform the correction using pre-stored data, and then transmit the corrected information to the interchangeable lens. This inversion simplifies the communication protocol while maintaining full adaptability.
3Measurement precision
If communication data amount is increased to include correction information, then optical information accuracy is improved, but communication time increases
Solution Approach 1:
The camera main body performs preliminary action by storing optical information of the interchangeable lens in advance. When correction is needed, only the difference data or correction parameters need to be transmitted rather than complete optical information sets, significantly reducing communication time while maintaining accuracy.
Solution Approach 2:
The system transmits only the specific correction information needed for optical accuracy rather than complete optical parameter sets. By identifying and transmitting only the relevant correction data locally needed for the specific intermediate accessory type, communication time is minimized while optical information accuracy is maintained.
Data Source
AI summary
A camera control unit obtains information related to an optical correction of an interchangeable lens from an intermediate accessory by a second communication via a second communication path. The camera control unit controls a communication in a manner that the above-described information is used for the optical correction of the interchangeable lens.