Camera Lens Communication System for High-Speed Data Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communication methods between camera main bodies and accessory apparatuses, such as interchangeable lenses, face challenges in efficiently transferring large amounts of data in a short time, particularly due to increased data volumes from advanced imaging controls and higher frame rates.
Innovation Solution
The implementation of a communication system using two signal lines, where one line handles data transfer and the other manages flow control, allowing for switching between different communication modes based on data quantity, enabling efficient data exchange by using broadcast, peer-to-peer, and burst communication methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communication data volume is increased to support advanced imaging control and higher frame rates, then imaging control capability is improved, but communication time and system response time increase
Solution Approach 1:
The communication protocol segments data transmission into multiple blocks with flow control between them. Instead of transmitting all data at once, the system divides the data stream into manageable segments, allowing the receiver to acknowledge and request flow control at intermediate points, thereby reducing overall communication time while maintaining complete data transfer
Solution Approach 2:
The patent implements a feedback mechanism where the receiver sends flow control signals back to the transmitter based on buffer status and processing capability. This feedback loop allows dynamic adjustment of transmission rate and data block size, optimizing communication efficiency and reducing time loss as imaging control requirements change
2Reliability
If flow control signal transmission frequency is increased to manage data buffer overflow, then communication reliability is improved, but communication overhead and processing load increase
Solution Approach 1:
The system implements flow control at strategic partial points in the data transmission process rather than continuously monitoring and signaling throughout. By placing flow control mechanisms at key decision points where buffer overflow is most likely to occur, the system achieves reliable communication with reduced control complexity and overhead
Data Source
AI summary
A camera microcomputer transmits identification information about an interchangeable lens by peer-to-peer (P2P) communication. The camera microcomputer then receives an optical parameter for correcting lens state information about the interchangeable lens by P2P communication. After the reception, the camera microcomputer receives optical table information for correcting the lens state information about the interchangeable lens by P2P burst communication.