SLVS-EC Image Frame Packet Transmission for Security and Safety
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Solution Overview
Problem
Existing data transmission methods between image sensors and hosts lack effective measures for implementing functional safety and security, particularly in the context of scalable low voltage signaling-embedded clock (SLVS-EC) communication.
Innovation Solution
A frame-based approach is introduced where security and functional safety information is added to data packets, enabling secure and safe data transmission by incorporating security information and functional safety information into frame data, which is processed and verified at the reception end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frame data is generated by adding security information and functional safety information to output data in units of frames, then data transmission security and reliability are improved, but device complexity increases due to the need for additional information processing and packet generation
Solution Approach 1:
The transmission apparatus segments the frame data into multiple packets, with each packet containing a specific portion of the frame data along with associated security and functional safety information. This segmentation allows the controller to process and transmit data in manageable units, reducing the complexity burden on the controller while maintaining comprehensive security coverage across the entire frame data set.
Solution Approach 2:
The controller performs preliminary actions by pre-calculating and attaching security information (such as authentication codes) and functional safety information (such as error detection codes) to the frame data before transmission. This preliminary processing ensures that security and safety verification can be performed efficiently at the receiver side without requiring complex real-time processing during data reception.
2Reliability
If security information and functional safety information are added to each frame of data, then data integrity and security are improved, but the amount of data to be transmitted increases
Solution Approach 1:
The patent applies local quality by selectively adding security information and functional safety information only to specific critical portions of the frame data rather than uniformly to all data. The controller determines which packets require enhanced protection based on the nature of the data content, thereby maintaining data integrity for critical information while minimizing the overall increase in data transmission volume.
Solution Approach 2:
The system dynamically adjusts the amount and type of security and functional safety information added to frame data based on varying parameters such as data sensitivity, transmission conditions, and security requirements. This parameter-based approach allows the system to optimize the balance between data integrity protection and transmission efficiency, adding only the necessary amount of protective information for each specific data set.
3Productivity
If packets are generated based on frame data with individual packets including individual lines of image data, then data transmission efficiency is improved, but the complexity of processing and managing multiple packets increases
Solution Approach 1:
The frame data is segmented into multiple individual packets, with each packet containing a specific line or portion of image data. This segmentation enables parallel processing and transmission of multiple packets simultaneously, significantly improving data transmission efficiency. The receiver can process packets independently and in parallel, reducing the overall processing time compared to handling a single large frame data set.
Solution Approach 2:
The patent implements a universal packet structure that can handle various types of data (image data, security information, functional safety information) in a standardized format. This multi-functional packet design allows the same processing logic to be applied across all packets regardless of their specific content, simplifying the management and processing complexity despite the increased number of packets.
Data Source
AI summary
Packet transmission methods, apparatus and programs are disclosed. In one example, a transmission apparatus includes a controller that is configured to generate frame data corresponding to output data generated by a sensor. The frame data is generated according to a frame format that includes at least one of first security information or first functional safety information. The controller generates packets based on the frame data, with individual packets respectively including individual lines of image data in the frame data.