Memory Card Terminal Arrangement for High-Speed Operation
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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 speed 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, where the second row terminals are spaced farther apart to accommodate a memory controller and non-volatile memory device, with a card detection terminal and ground terminals to facilitate high-speed operation and prevent signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the second row terminals are spaced farther apart from the insertion side to accommodate memory controller and non-volatile memory device, then the operational speed is improved by minimizing signal transfer paths, but the device complexity increases due to asymmetric terminal arrangement
Solution Approach 1:
The patent applies asymmetry by positioning the second row terminals at a specific distance (approximately 20% of the memory card length from the center) rather than symmetrically distributing all terminals. This asymmetric arrangement optimizes signal transfer paths for high-speed operation while accommodating the memory controller and non-volatile memory device in the central region, resolving the contradiction between speed improvement and structural complexity.
2Reliability
If multiple row terminals with different voltage power terminals are arranged to provide proper power supply and ground connections, then reliability is improved by preventing malfunctions, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by assigning different functions to different terminal rows: the first row terminals are positioned adjacent to the insertion side for basic power and ground connections, while the second row terminals are positioned farther away (at 20% from center) for enhanced power supply and data transmission. This localized functional differentiation ensures proper power supply and ground connections for reliable operation while maintaining manageable manufacturing precision through standardized positioning.
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.