Memory Card Terminal Arrangement for Signal Noise Reduction
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Solution Overview
Problem
The demand for compact, high-speed, and high-capacity memory cards is increasing, but existing memory cards face challenges in achieving optimal operational speeds and preventing malfunctions due to complex terminal arrangements and power supply configurations.
Innovation Solution
A memory card design featuring a substrate with specific terminal arrangements, including first and second row terminals with distinct voltage power and data terminals, where the second row terminals are positioned closer to the center, reducing the distance between the memory controller and non-volatile memory device, and incorporating a card detection terminal to enhance recognition accuracy and prevent signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the second row terminals are positioned closer to the center of the memory card, then the operational speed is improved and signal noise is reduced, but the terminal arrangement complexity increases
Solution Approach 1:
The terminal arrangement is segmented into two distinct rows with different positioning strategies. The first row terminals are positioned at one end while the second row terminals are positioned closer to the center, creating separate functional zones that optimize signal paths for high-speed operation while maintaining manageable complexity through structured organization.
Solution Approach 2:
Different regions of the memory card are assigned different terminal positioning characteristics. The first row terminals follow one positioning pattern while the second row terminals follow another, allowing each region to be optimized for its specific function - this local differentiation enables high-speed operation in critical areas without requiring complete redesign of the entire terminal arrangement.
2Reliability
If multiple row terminals with distinct voltage power and data terminals are implemented, then data input/output stability is improved, but the device complexity increases
Solution Approach 1:
The terminal configuration is segmented into functional groups - voltage power terminals, data terminals, and ground terminals are separated into distinct rows and positions. This segmentation allows each terminal type to be optimized for its specific function while reducing interference between different signal types, thereby improving data I/O stability without requiring a complete overhaul of the terminal architecture.
Solution Approach 2:
The terminal arrangement utilizes the two-dimensional surface of the memory card substrate by positioning terminals in multiple rows at different locations. This spatial distribution across different dimensions allows complex functional requirements to be met while maintaining a manageable overall structure, as the complexity is distributed across the surface rather than concentrated in a single area.
3Object-affected harmful factors
If the second row terminals are spaced farther apart from the insertion side, then signal interference is reduced, but the card recognition speed may be affected
Solution Approach 1:
Ground terminals are positioned between the first row terminals and the second row terminals, serving as an intermediary that shields the high-speed data signals in the second row from potential interference. This intermediary grounding structure reduces signal interference without requiring the second row terminals to be positioned extremely far from the insertion side, thus maintaining a balance between interference reduction and recognition speed.
Data Source
AI summary
A memory card is provided to include a substrate having two pairs of edges facing each other, a plurality of first row terminals that are arranged adjacent to an edge at an insertion side of the substrate and include a first voltage power terminal for applying a first voltage and a first ground terminal, a plurality of second row terminals that are spaced farther apart from the edge at the insertion side than the plurality of first row terminals and include a second voltage power terminal for applying a second voltage and first data terminals, and a plurality of third row terminals that are spaced farther apart from the edge at the insertion side than the plurality of second row terminals and include second data terminals.