Memory Signal Path Biasing for Interference Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In electronic systems, signal transmission between memory devices and host devices can cause interference, particularly during transitions between idle and information transfer states, leading to electromagnetic and electric field interference that affects signal reception and system performance.
Innovation Solution
The system biases the signal path to a mid-bias voltage level between the voltage levels of a modulation scheme during transitions, reducing the rate of change of signaling and thereby minimizing interference by using a mid-bias voltage as a preamble or postamble before and after information transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the signal path transitions directly between idle and information transfer states, then the signaling speed is maintained, but electromagnetic and electric field interference increases
Solution Approach 1:
The patent applies preliminary action by inserting a mid-bias voltage preamble before information transfer begins and a postamble after it ends. This preliminary voltage level transition prepares the signal path gradually, preventing direct switching between idle and active states, thereby reducing electromagnetic interference while maintaining signaling speed.
Solution Approach 2:
The mid-bias voltage serves as an intermediary state between the idle voltage level and the information transfer voltage levels. This intermediate voltage level acts as a mediator that smooths the transition, reducing the rate of change and consequently minimizing electromagnetic and electric field interference during state transitions.
2Productivity
If the signal path uses rapid voltage transitions for efficient data transfer, then productivity is improved, but signal interference with other signals increases
Solution Approach 1:
By implementing mid-bias voltage preambles and postambles, the system prepares the signal path in advance with a gradual voltage transition. This preliminary action reduces the abruptness of voltage changes, thereby decreasing signal interference with other signals while preserving data transfer efficiency through maintained signaling speed.
Solution Approach 2:
The patent changes the voltage parameter by introducing a mid-bias level between the idle and active states. This parameter modification creates a smoother voltage transition profile, reducing the rate of change during state transitions and consequently minimizing signal interference, while the overall data transfer efficiency remains intact.
Data Source
AI summary
Methods, systems, and devices for signal path biasing in an electronic system (e.g., a memory system) are described. In one example, a memory device, a host device, or both may be configured to bias a signal path, between an idle state and an information transfer or between an information transfer and an idle state, to an intermediate or mid-bias voltage level, which may reduce signal interference associated with such transitions. In various examples, the described biasing to a voltage, such as a mid-bias voltage, may be associated with an access command or other command for information to be communicated between devices of the electronic system, such as a command for information to be communicated between a memory device and a host device.