Electronic Circuit Nesting for Signal Security

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Solution Overview

Problem

In electronic circuits, especially those handling sensitive signals like payment terminals, external components used for signal processing create vulnerabilities by providing access points for signal interception, and existing solutions like multilayer printed circuits are costly to implement.

Innovation Solution

The electronic circuit design incorporates a first electronic component with brazed electrical interconnections on a printed circuit, creating a space between the interconnection face and the external face to house a second electronic component, which restricts access to sensitive signals and improves signal processing performance by placing the second component close to the interconnections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If external components are used for signal processing, then the electrical performance is improved, but access points for signal interception are created

Engineering Contradiction:

Improveelectrical performanceVSAvoidsignal interception access

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent embeds the second electronic component (signal processing component) inside the first electronic component (package body) by utilizing the space between the interconnection face and the external face. This nesting arrangement allows the signal processing function to be integrated within the package structure, eliminating external access points and preventing signal interception while maintaining electrical performance.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent transitions from a traditional planar arrangement where components are mounted on the surface to a three-dimensional configuration by placing the second component inside the first component's package body. This vertical integration into the package depth dimension eliminates the need for external signal routing and access points.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If multilayer printed circuit is used to bury external components, then signal access is restricted, but manufacturing cost increases

Engineering Contradiction:

Improvesignal access restrictionVSAvoidmanufacturing cost

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent combines the package body and the signal processing component into a single integrated structure where the second component is housed within the first component's package. This merging eliminates the need for separate multilayer circuit board structures and complex assembly processes, reducing manufacturing cost while achieving the same security objective of restricting signal access.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts the signal processing function from the external circuit board environment and relocates it inside the component package itself. This extraction removes the dependency on complex multilayer printed circuits and their associated manufacturing costs while maintaining the security benefit of restricted signal access.

Inventive Principle:

Principle #2Taking out (Extraction)

3Volume of stationary object

If components are placed close together for space efficiency, then manufacturing complexity increases, but space utilization improves

Engineering Contradiction:

Improvespace utilizationVSAvoidassembly complexity

Core Design Contradiction:

Volume of stationary objectVSDevice complexity

Solution Approach 1:

The patent performs preliminary positioning and integration of the second electronic component within the first component's package body before final brazing. The assembly process includes placing the second component on the external face, then placing the first component such that its interconnection face forms a cavity around the second component, followed by brazing to secure both components. This preliminary arrangement simplifies the overall assembly process while achieving efficient space utilization.

Inventive Principle:

Principle #10Preliminary action

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 design enhances security by restricting access to sensitive signals while improving the electrical performance of the circuit, making it suitable for secure applications without the high costs associated with previous solutions.

Implementation Method 1

at least one first electronic component comprising a face, referred to as an interconnection face, provided with electrical interconnections brazed on an external face of the printed circuit

Methodology Applied

Scientific EffectBrazing: Brazing

Data Source

PatentUS12028981B2Secure electronic circuit and corresponding assembly process

Publication Date: 2024.07.02 BANKS & ACQUIRERS INT HLDG SAS

AI summary

An electronic circuit, which includes: a printed circuit, at least one first electronic component and at least one second electronic component. The at least one first electronic component includes an interconnection face provided with electrical interconnections brazed on an external face of the printed circuit. The interconnection face is opposite the external face. The brazed electrical interconnections form at least one space between the interconnection face and the external face. The at least one second electronic component is brazed on the external face and is at least partly housed in the at least one space.