Protective Sleeve with Selective NFC Transparency for Set-Top Box Access

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Solution Overview

Problem

Existing conditional access systems for digital media content in consumer devices, such as set-top boxes and smartphones, lack a convenient and secure method to grant and manage access rights, especially in environments where devices are prone to mechanical damage or require visual indication of accessible content.

Innovation Solution

A sleeve with embedded proximity wireless communication technology, including an antenna and security module, that communicates access rights to a reception device when in close proximity, allowing secure decryption of content and providing visual cues for accessible media.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a protective shield accessory is applied to the device, then mechanical protection is improved, but wireless communication access may be blocked

Engineering Contradiction:

Improvemechanical protectionVSAvoidwireless communication access

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The protective shield is segmented into multiple sections with selective electromagnetic transparency. Certain regions of the shield are designed to allow NFC/RFID signals to pass through while other regions provide full mechanical protection, enabling both protection and communication functions simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the protective shield have different electromagnetic properties. The shield incorporates regions with varying levels of electromagnetic shielding, allowing NFC communication in specific zones while maintaining mechanical protection across the entire device surface.

Inventive Principle:

Principle #3Local quality

2Reliability

If electromagnetic shielding is provided to block unauthorized access, then security is improved, but legitimate access may be prevented

Engineering Contradiction:

Improvesecurity against unauthorized accessVSAvoidlegitimate access convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system performs preliminary verification of the user's identity and device authorization status before enabling or disabling electromagnetic shielding. Authorized users have their access rights confirmed in advance, allowing the shield to remain transparent for them while blocking unauthorized access.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The protective shield incorporates sensors and communication modules that continuously monitor access attempts and provide feedback to a control system. The system dynamically adjusts the electromagnetic shielding properties based on real-time authentication results, enabling legitimate access while maintaining security.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If visual personalization is added to the protective accessory, then user customization is improved, but device complexity increases

Engineering Contradiction:

Improvevisual personalizationVSAvoidaccessory structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The protective shield integrates multiple functions into a single component: mechanical protection, selective electromagnetic transparency for NFC communication, and visual personalization. This multi-functional design avoids the need for separate accessories for each function, reducing overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The protective shield incorporates color-changing or patterned materials that provide visual personalization without adding complex structural elements. The aesthetic features are integrated into the shield's basic structure, allowing customization without increasing device complexity.

Inventive Principle:

Principle #32Color 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

Enables secure and convenient access right management for digital media content, enhancing device protection and providing visual indicators for accessible content, while maintaining device functionality and user anonymity.

Implementation Method 1

a proximity wireless communications channel is set up towards the reception device when the sleeve and the reception device are within a predetermined proximity distance from each other

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS10123192B2System for providing access to conditional access media content

Publication Date: 2018.11.06 SMARDTV SA

AI summary

The present invention relates to a system and a device for conveniently providing rights to particular conditional access protected digital media content. A sleeve for covering a reception device for receiving the conditional access content is provided. The sleeve comprises a proximity wireless communications module including an antenna and a control chip. The reception device may be a set-top box, a telephone, a tablet computer or the like, as long as it is capable of receiving conditional access content, and may be used along with a detachable security module for decrypting control words to allow the content to be decrypted. The owner of such a reception device may purchase the sleeve which contains the rights to access conditional access content and when the sleeve is mounted on the reception device the rights are granted to the reception device by way of the proximity communications means.