Conversion Cable IC Digital to Analog Voice Signal Authentication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need to authenticate and output digital voice signals that require copyright protection while avoiding unnecessary authentication for signals that do not require protection, particularly in the context of electronic devices transitioning from traditional 3.5 mm jacks to USB Type-C or Lightning connectors.
Innovation Solution
A conversion cable equipped with an IC that converts digital voice signals to analog signals and holds an encryption key, allowing authentication and output only for digital voice signals that require copyright protection, ensuring secure and compliant audio output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication is performed for all digital voice signals, then copyright protection is ensured, but operation complexity increases and unnecessary authentication occurs for unprotected signals
Solution Approach 1:
The patent applies local quality by differentiating authentication requirements based on signal type. The determination unit identifies whether the digital voice signal requires copyright protection, and authentication is applied only to protected signals. This selective approach ensures copyright protection for necessary signals while avoiding unnecessary authentication for unprotected signals, thereby reducing operation complexity.
2Reliability
If authentication is performed for all digital voice signals, then copyright protection is ensured, but processing time increases
Solution Approach 1:
The patent implements preliminary action by having the determination unit pre-identify whether a digital voice signal requires copyright protection before authentication is performed. This preliminary classification allows the system to skip authentication for unprotected signals, significantly reducing processing time while maintaining reliable copyright protection for signals that require it.
3Manufacturing precision
If USB Type-C or Lightning connectors are used instead of 3.5 mm jacks, then audio signal quality is improved, but compatibility with protected content is lost
Solution Approach 1:
The patent applies universality by designing the USB Type-C or Lightning connector to serve multiple functions: it can output both unprotected digital voice signals and protected digital voice signals. The authentication mechanism enables the connector to handle copyrighted content securely, while the digital-to-analog conversion maintains high audio signal quality. This multi-functional design preserves both compatibility with protected content and superior audio quality.
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
Enables secure output of protected digital voice signals while preventing unnecessary authentication processes, maintaining versatility and reducing complexity in user operations and device configurations.
Implementation Method 1
an IC having a function of converting a digital voice signal supplied through the connector into an analog voice signal
Data Source
AI summary
There is provided a conversion cable including: a connector to be connected to an electronic device that outputs a digital voice signal; an IC having a function of converting a digital voice signal supplied through the connector into an analog voice signal; and an output unit for an analog voice signal output from the IC, in which the IC holds an encryption key for permitting the electronic device to output a digital voice signal that requires copyright protection.