Edge-Based Serial Signal Encoding for Single-Wire Jitter Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication protocols between host and client devices over a single communication line, such as USB, face challenges in meeting jitter requirements, leading to incomplete data transfer in certain scenarios due to signal processing limitations.
Innovation Solution
An electronic device with encoder and decoder circuits that detect signal edges and generate encoded serial communication signals, allowing reconstruction of multiple serial communication signals independent of a clock signal, enabling transmission and reception over a single wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional USB serial communication protocol is used to transfer multiple serial communication signals over a single communication line, then wiring is simplified, but jitter requirements are not met and data transfer is incomplete
Solution Approach 1:
The patent segments multiple serial communication signals (e.g., eDN and eDP signals) into individual time slots or channels for sequential transmission over the single communication line. The encoder circuit divides the composite signal into separate signal components, processes them independently, and reconstructs them at the receiver end, ensuring each signal meets its jitter requirements while sharing the common communication line.
Solution Approach 2:
The patent introduces an encoder circuit as an intermediary device between the signal sources and the communication line. This encoder circuit processes multiple input signals, encodes them with timing information, and outputs a serialized signal that preserves the original signal characteristics. The decoder circuit at the receiver end acts as a corresponding intermediary to reconstruct the original signals, ensuring jitter requirements are met without requiring separate physical lines for each signal.
2Device complexity
If signal processing is performed to enable transmission over a single communication line, then wiring is simplified, but jitter requirements of serial communication protocols are not met
Solution Approach 1:
The encoder circuit performs preliminary processing of multiple serial communication signals before transmission by detecting signal edges and generating predetermined codes that represent the original signal states. This preliminary encoding preserves timing information and signal characteristics, allowing the receiver to reconstruct the original signals with minimal jitter, thus meeting precision requirements while using a single communication line.
3Productivity
If multiple serial communication signals are processed for transmission over a single line, then communication efficiency is improved, but the system requires complex encoder and decoder circuits
Solution Approach 1:
The encoder circuit is designed as a universal device that can handle multiple types of serial communication signals (e.g., eDN, eDP, and other differential signals) through a single standardized processing architecture. The same encoder circuit structure can encode different signal types by detecting their respective edge transitions, and the corresponding decoder can reconstruct various signal types using the same decoding logic, reducing overall system complexity while maintaining high communication efficiency.
Data Source
AI summary
Embodiments of a method and a device are disclosed. In an embodiment, an electronic device includes a plurality of input ports configured to receive at least two serial communication signals, an encoder circuit configured to encode the at least two serial communication signals based on signal edges of the at least two serial communication signals to generate an encoded serial communication signal, the encoded serial communication signal enabling reconstruction of the at least two serial communication signals independent of a clock signal, and a transmitter configured to transmit the encoded serial communication signal.