Transceiver Multi-Level Braid Signaling Clock Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional signal processing devices experience bandwidth loss and noise margin reduction due to the use of dummy bits and differential transmission methods, which also limit the number of transmissible signals.
Innovation Solution
A transceiver that modulates data signals into code information and supplies common mode currents to multiple transmission lines, allowing for improved bit rate and noise reduction without the need for a separate analog reference voltage, using a modulation section unit to enhance transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dummy bits are added to data for clock signal transmission, then the clock signal can be transmitted, but transmission bandwidth is lost
Solution Approach 1:
The patent extracts the clock signal transmission function from the data signal by using the common-mode component of the differential signal. The receiver detects the clock signal by sampling the common-mode voltage level across multiple transmission lines, eliminating the need for separate dummy bits while maintaining reliable clock synchronization.
Solution Approach 2:
The transmission lines serve multiple functions simultaneously: they transmit both data signals and clock signals. The same physical medium carries information in the differential mode while the common-mode component provides the clock reference, achieving multi-functionality without requiring additional dedicated clock lines or dummy bits.
2Reliability
If differential transmission method is used, then noise margin is improved and EMI is reduced, but the number of transmissible signal types is limited
Solution Approach 1:
The patent utilizes the common-mode dimension of the differential signal to convey additional information. While the differential mode carries data, the common-mode voltage level provides an additional signaling dimension that can represent multiple states (e.g., high, low, mid levels), enabling more signal types to be transmitted through the same differential pair.
Solution Approach 2:
The patent changes the voltage parameter of the common-mode component to encode additional information. By varying the common-mode voltage level (e.g., high common-mode for one signal type, low common-mode for another), the system can transmit multiple signal types through the same physical medium while maintaining the noise immunity benefits of differential signaling.
3Productivity
If multiple transmission lines are used for data transmission, then transmission capacity increases, but common-mode level uniformity becomes difficult to maintain
Solution Approach 1:
The patent merges the common-mode components of multiple transmission lines to form a unified clock reference. By connecting the common-mode terminals of multiple differential pairs together at the receiver, the system creates a single common-mode voltage that represents the clock signal, automatically maintaining uniformity across all transmission lines regardless of individual line variations.
Data Source
AI summary
A transceiver includes a transmitter modulating a data signal into code information in a modulation section unit and individually supplying a common mode current to a plurality of transmission lines and a receiver detecting the code information according to a voltage level of each of the transmission lines and outputting the data signal.