Data Converter Edge Processing for Low-Latency Control
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Solution Overview
Problem
Data converter systems experience significant delays and increased power consumption due to conversions between analog and digital signals, as well as data transmission between components, which is exacerbated in systems using serial interfaces.
Innovation Solution
Implement edge processing by performing a substantial proportion of the data conversion processing at the data converter, transmitting only a difference signal rather than a full digital word, and using models to predict changes in the output, thereby reducing the need for extensive communication between the controller and the digital-to-analog converter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If data conversion and processing is performed at the controller, then control accuracy is improved, but conversion latency and power consumption increase
Solution Approach 1:
The patent segments the data conversion system into two parts: the controller performs only difference calculation (comparing input signal to target value), while the data converter performs the actual conversion and processing. This segmentation allows the controller to minimize processing time while the specialized converter handles the conversion, thereby reducing overall latency while maintaining control accuracy through precise difference calculation.
Solution Approach 2:
The patent introduces a difference signal as an intermediary between the controller and data converter. Instead of transmitting full digital words, only the difference (error signal) is transmitted. This intermediary representation reduces the data volume and processing requirements at the controller, reducing latency while maintaining the precision needed for accurate control.
2Use of energy by moving object
If data transmission between controller and data converter is reduced, then power consumption is reduced, but control precision may be compromised
Solution Approach 1:
The patent extracts only the essential information needed for control - the difference signal - from the full digital word. By taking out only the error component that needs to be corrected, the system reduces transmission data volume and power consumption while retaining sufficient precision for effective control through the converter's processing capabilities.
3Stability of the object's composition
If processing is centralized at the controller, then system coordination is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent segments processing functions between the controller and data converter. The controller handles only high-level difference calculation and coordination, while the data converter handles detailed conversion and processing. This segmentation reduces controller complexity while maintaining system coordination through the standardized difference signal interface.
Data Source
AI summary
The present disclosure relates to a data converter system and a method for operating the data converter system. Rather than determining a new input to a data converter using a controller, edge processing is used to reduce controller signal processing requirements by utilising processing taking place at the data converter itself. This reduces the data transmission requirements between the components, thus decreasing latency in the system.