Removable Memory Coupling Eliminates Signal Stubs
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Solution Overview
Problem
Existing memory systems suffer from signal integrity issues due to signal stubs caused by unoccupied memory sockets, which degrade performance in partially utilized memory channels.
Innovation Solution
The introduction of a removable compression coupling system that allows memory modules to be installed in underutilized memory channels, eliminating signal stubs by attaching and detaching the coupling from the motherboard as needed, ensuring uniform seating of electrical contacts within the motherboard's memory slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If memory sockets are permanently fixed to the motherboard, then memory modules can be easily installed and removed, but signal stubs are created in unoccupied memory channels degrading signal integrity
Solution Approach 1:
The memory coupling system is divided into two separate components: a removable coupling that attaches to the motherboard memory slot, and a memory module that inserts into the coupling. This segmentation allows the coupling to be removed when not in use, eliminating signal stubs in unoccupied memory channels, while still providing easy installation and removal of memory modules when needed.
Solution Approach 2:
The memory coupling system transitions from a static permanently-fixed socket to a dynamic removable coupling. The coupling can be attached to the motherboard when memory expansion is needed and removed when not needed, adapting the system configuration based on operational requirements. This dynamic approach eliminates the signal integrity problem of permanently fixed sockets while maintaining ease of operation.
2Reliability
If electrical contacts are made rigid for stable connection, then connection reliability improves, but uniform seating within the memory slot becomes difficult
Solution Approach 1:
The electrical contacts are designed with elastic properties, changing their physical parameter from rigid to flexible. This elasticity allows the contacts to deform during installation and automatically return to their original position, ensuring uniform seating within the memory slot while maintaining stable electrical connection. The elastic deformation compensates for manufacturing tolerances and alignment variations.
Solution Approach 2:
The elastic deformation of electrical contacts, which could be seen as a compromise in structural rigidity, is actually converted into a benefit. The flexibility allows the contacts to self-align and seat uniformly in the memory slot, improving both manufacturing precision and connection reliability. The elastic property transforms what might be considered a weakness into a functional advantage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution improves signal integrity by eliminating signal stubs, allowing for increased signaling frequencies and expanded memory capabilities without degrading existing memory systems.
Implementation Method 1
The housing of the coupling may be manufactured in a prestressed state such that the electrical contacts of the coupling are in a convex arrangement when the coupling is not attached to the motherboard. The concave arrangement of the electrical contacts is converted to a concave arrangement of the electrical contacts though tightening of the fasteners. The concave arrangement of the electrical contacts is straightened by the force applied in installing the memory module in the coupling.
Data Source
AI summary
Removeable couplings are provided for connecting a memory module to a host processor of an IHS (Information Handling System). The coupling includes electrical contacts and fasteners for positioning the electrical contacts within an empty memory slot of the IHS motherboard. The housing extends between two ends of the coupling and receives the memory module when the memory module is installed in the IHS. The positioned electrical contacts are then seated within the memory slot of the motherboard by the downward force applied by an administrator in installing the memory module to the coupling. The force applied in installing the memory module also serves to connect the electrical contacts of the coupling to a memory channel of the motherboard. The removeable coupling is not attached to the motherboard when the memory module is not installed in the IHS, thus eliminating signal stubs in the memory channel.