Personal Digital Key Linked Account System for Secure Content Access

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Solution Overview

Problem

Current digital rights management (DRM) systems often favor either the content provider or the consumer, compromising their rights, and existing account security technologies are inadequate in preventing credit card and bank account information theft, leading to increased transaction fees and consumer inconvenience.

Innovation Solution

A personal digital key (PDK) system that integrates with a reader/decoder circuit (RDC) to manage digital rights and secure digital content, allowing users to access and play back content while ensuring the content provider's rights are protected, and utilizing a linked account system for secure transactions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If DRM systems implement strict content protection measures, then content provider rights are improved, but consumer rights and ease of use deteriorate

Engineering Contradiction:

Improvecontent protectionVSAvoidconsumer access

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent introduces a personal digital key (PDK) as an intermediary between the consumer and the DRM system. The PDK stores decryption keys and manages authentication, allowing consumers to access protected content without directly interacting with complex DRM infrastructure. This mediator approach simplifies consumer interaction while maintaining strong content protection through the key management system.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system enables consumers to self-manage their digital rights through the PDK. Users can independently authenticate, decrypt, and play protected content without requiring continuous intervention from content providers or DRM administrators. The personal digital key system allows consumers to control their own access rights, balancing ease of use with provider protection.

Inventive Principle:

Principle #25Self-service

2Device complexity

If existing account security technologies are used, then implementation simplicity is improved, but security effectiveness deteriorates

Engineering Contradiction:

Improvesecurity systemVSAvoidaccount security

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent replaces traditional mechanical security measures (credit card numbers, passwords, PINs) with a personal digital key system based on cryptographic principles. The PDK uses public key infrastructure and secure authentication mechanisms to protect account information, eliminating the need for vulnerable conventional security methods while maintaining system simplicity from the user perspective.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If digital content distribution is expanded, then market growth is improved, but content theft increases

Engineering Contradiction:

Improvedistribution speedVSAvoidcontent theft

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The system performs preliminary authentication and key exchange actions before content delivery. The personal digital key system establishes secure credentials and decryption keys in advance, ensuring that content can be rapidly distributed and played back without security delays. This preliminary authentication setup enables fast distribution while preventing theft through pre-established security barriers.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11258791B2Linked account system using personal digital key (PDK-LAS)

Publication Date: 2022.02.22 PROXENSE

AI summary

One embodiment of the invention includes a system comprising: a personal digital key and a computer readable medium that is accessible when authenticated by the personal digital key.