Voltage-Triggered Switch Routing for Shared USB and Audio Contacts

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Solution Overview

Problem

Electronic devices face challenges in efficiently routing electrical signals from peripheral devices due to limited space and varying voltage amplitudes, which complicates the connection and functionality of different circuit modules.

Innovation Solution

A switch feature that utilizes insulated gate field effect transistors and diodes to dynamically change electrical conductivities based on voltage amplitude, allowing signals to be routed to either a USB circuit module or an audio circuit module depending on the threshold voltage, ensuring efficient signal transfer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple circuit modules are coupled to a single electrical contact, then the device can support multiple peripheral devices, but it becomes difficult to route signals to the correct module based on voltage amplitude

Engineering Contradiction:
Improveability to connect multiple peripheral devicesVSAvoidsignal routing complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the signal path into separate channels, each with its own switch feature. The first channel handles signals for the first circuit module while the second channel handles signals for the second circuit module. This segmentation allows independent control of signal routing to each module based on voltage amplitude detection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces switch features as intermediary components between the electrical contact and the circuit modules. These switch features detect voltage amplitude and automatically route signals to the appropriate module, eliminating the need for complex manual routing logic and reducing overall system complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the device supports multiple types of peripheral devices, then connectivity is enhanced, but space for accommodating all connection components is limited

Engineering Contradiction:
Improveconnectivity with various peripheral devicesVSAvoidspace for connection components
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent implements a universal electrical contact design that can accommodate multiple types of peripheral devices through a single interface. The switch features enable this single contact to dynamically adapt its function based on the detected voltage amplitude, allowing one physical interface to serve multiple purposes without requiring separate dedicated contacts for each device type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent employs dynamic switch features that automatically adjust their conductivity state based on real-time voltage amplitude detection. This dynamic behavior allows the same physical infrastructure to serve multiple functions, maximizing space utilization while maintaining versatility in peripheral device connectivity.

Inventive Principle:
Principle #15Dynamics

3Productivity

If voltage-based signal routing is implemented, then efficient signal transfer is achieved, but the switch feature complexity increases

Engineering Contradiction:
Improvesignal transfer efficiencyVSAvoidswitch feature complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements self-service voltage detection and routing through the switch features. The switch features automatically detect the voltage amplitude of incoming signals and autonomously determine the appropriate routing path without requiring external control logic. This self-service mechanism simplifies the overall control architecture while maintaining efficient signal transfer.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent utilizes parameter changes in voltage amplitude as the basis for automatic signal routing. The switch features monitor voltage parameters and transition between conductive and non-conductive states based on whether the detected voltage exceeds predetermined thresholds. This parameter-based control achieves efficient signal transfer through simple threshold-comparison logic rather than complex routing algorithms.

Inventive Principle:
Principle #35Parameter changes

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 enables electronic devices to effectively manage and route electrical signals from peripheral devices, optimizing the use of limited space and ensuring proper functionality across different voltage levels, enhancing the connectivity and performance of electronic devices.

Implementation Method 1

The threshold voltage may be the breakdown voltage of the diode

Methodology Applied
Scientific EffectBreakdown voltage: Avalanche Breakdown

Implementation Method 2

The other channel may comprise an insulated gate field effect transistor

Methodology Applied
Scientific EffectField effect transistor operation:

Data Source

PatentUS9825629B2Apparatus comprising a switch feature
Publication Date: 2017.11.21 NOKIA TECHNOLOGIES OY
  • US9825629B2 patent drawing
  • US9825629B2 patent drawing
  • US9825629B2 patent drawing

AI summary

Apparatus comprises a switch feature configured to restrict an electrical signal transmitted from a peripheral device, and received through an electrical contact, from being transferred to one of first and second circuit modules coupled to the electrical contact, depending on the voltage amplitude of the electrical signal.