Imaging System Key-Based Synchronization and Error Correction
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Solution Overview
Problem
Existing imaging systems face challenges in reliably communicating imaging data between camera units and information-processing units, particularly in maintaining synchronization of clocks and handling transmission errors, which can lead to instability and errors during image transmission, especially in environments with disturbance noise.
Innovation Solution
The system employs a camera unit with an imager, a register, a collation circuit, and transmission circuits to transmit and receive packets, using a transmission key embedded in the imaging data to synchronize clocks and correct errors by generating a reception key and writing register-setting signals when the keys match, ensuring stable operation even with disturbance noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a test signal is transmitted to determine communication state, then communication reliability can be checked, but transmission time and system complexity increase
Solution Approach 1:
The patent applies preliminary action by embedding a transmission key in the imaging data before transmission. The information-processing unit generates a reception key in advance based on the transmission key, and the collation circuit prepares to verify the key match. This preliminary preparation of keys and verification mechanisms allows for rapid communication state checking without requiring separate test signal transmission, thus maintaining reliability while reducing transmission time.
2Stability of the object's composition
If register-setting is executed continuously to maintain imaging conditions, then imaging stability improves, but power consumption and system complexity increase
Solution Approach 1:
The patent implements feedback by using the key collation result as a control signal for register-setting execution. The collation circuit compares the transmission key with the reception key, and the writing circuit executes register-setting only when the keys match. This feedback mechanism ensures imaging stability by updating registers only when communication is verified to be reliable, while avoiding unnecessary power consumption from continuous register-setting operations.
3Reliability
If error detection and correction mechanisms are added to handle disturbance noise, then transmission reliability improves, but device complexity increases
Solution Approach 1:
The patent uses an intermediary approach by introducing a transmission key and reception key as mediating elements between the camera unit and information-processing unit. These keys serve as a simple verification mechanism that intermediates the communication process, allowing error detection without requiring complex error correction codes or multiple redundant transmission channels. The key collation provides a lightweight reliability check that maintains transmission reliability while minimizing device complexity.
Data Source
AI summary
In an imaging system according to an embodiment of the present invention, a camera unit is configured to transmit imaging data to an information-processing unit as a downlink packet. The camera unit is configured to hold predetermined data in the imaging data as a transmission key. The information-processing unit is configured to receive the downlink packet, recognize the predetermined data in the imaging data as the transmission key, and generate a reception key on the basis of the transmission key. The information-processing unit is configured to transmit an uplink packet including the reception key and a register-setting signal indicating an imaging condition to the camera unit. The camera unit is configured to write the register-setting signal received with the reception key in a register when the transmission key and the reception key meet a predetermined condition.