Asynchronous Control Signal Error Detection via Logic Signature Feedback
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Solution Overview
Problem
In clock-controlled data transmission systems, the need to transmit a clock signal or recover it at the receiver using complex circuits is inefficient, especially for complex systems, and existing methods for checking data integrity are not effective for asynchronous control signals.
Innovation Solution
The method involves logically combining control signals received via multiple control lines at the receiver end and transmitting the result back to the transmitter end in an asynchronous manner, allowing for immediate error detection and interference checking with minimal latency, using a transmitter with control signal outputs, a signature generator, and a checking device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clock-controlled data transmission is used, then data integrity can be checked using checksums, but additional clock transmission or complex clock recovery circuits are required
Solution Approach 1:
The patent extracts the timing information from the data transmission itself by using rising edges in the control signals as synchronization markers. This eliminates the need for separate clock transmission or complex clock recovery circuits while maintaining data integrity through the extracted timing information
Solution Approach 2:
The control signals serve multiple functions: they carry data information, provide timing synchronization through their rising edges, and enable error detection. This multi-functionality eliminates the need for separate dedicated clock signals and reduces overall system complexity
2Loss of time
If asynchronous transmission is used, then latency is reduced, but error detection capability is compromised
Solution Approach 1:
The patent implements a feedback mechanism where the receiver generates a signature signal based on received control signals and transmits it back to the transmitter. The transmitter then compares this signature with the original control signals to detect errors, providing error detection capability while maintaining asynchronous transmission's low latency
3Device complexity
If control signals are transmitted without checksums, then transmission simplicity is maintained, but data integrity cannot be verified
Solution Approach 1:
The patent creates a signature signal that is a copy of the control signals processed through specific logic operations (ORing with inverted signals). This signature serves as a verification copy that can be transmitted back to detect errors without adding complex checksum calculations or significantly increasing transmission complexity
Data Source
AI summary
In a method for asynchronously transmitting control signals from a transmitter end to at least one receiver via a plurality of control lines, control signals received via the individual control lines are logically combined with one another at the receiver end and the result of the logic combination is transmitted to the transmitter end.