Intercom Network NFC Authorization for Fast Secure Registration

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing intercom networks for live events require manual password entry for mobile device authorization, which is time-consuming and distracts operators from other tasks, and lack secure, convenient methods for device registration.

Innovation Solution

Implementing NFC elements on stationary and mobile devices for automatic authorization information transfer, eliminating the need for manual password entry and enhancing security and convenience during device registration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual password entry is used for mobile device authorization, then security is maintained through verification, but operator time is consumed and distraction from other tasks increases

Engineering Contradiction:
Improveauthorization securityVSAvoidoperator time for password entry
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system pre-stores authorization data (passwords or unique device identifiers) in the stationary element before mobile devices arrive. When a mobile device approaches, the system automatically retrieves and verifies the pre-stored authorization data without requiring manual password entry, thus maintaining security while eliminating time loss.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces the manual mechanical process of password entry and verification with an automated electronic system. The stationary element automatically detects the mobile device, retrieves pre-stored authorization data, performs verification, and grants access without human intervention, substituting manual operations with automated electronic processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If manual password entry is required for device registration, then authorization control is maintained, but ease of operation deteriorates due to complex registration process

Engineering Contradiction:
Improveauthorization controlVSAvoiddevice registration convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The mobile device performs self-service registration by automatically transmitting its unique device identifier to the stationary element. The stationary element autonomously verifies this identifier against pre-stored authorization data and completes the registration process without requiring operator intervention, thus maintaining authorization control while dramatically improving ease of operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manual mechanical process of password entry and verification is replaced with an automated electronic system. The stationary element automatically detects the mobile device, retrieves pre-stored authorization data, performs verification, and grants access without human intervention, substituting manual operations with automated electronic processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If NFC elements are added to stationary and mobile devices for automatic authorization, then ease of operation and registration speed improve, but device complexity increases

Engineering Contradiction:
Improveautomatic authorizationVSAvoidNFC element integration
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The NFC element in the stationary element serves multiple functions: it stores authorization data for multiple mobile devices, automatically detects approaching mobile devices, retrieves and verifies authorization data, and manages registration. This multi-functionality justifies the added complexity by eliminating the need for separate manual authorization processes.

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

Solution Approach 2:

The NFC element acts as an intermediary between the mobile device and the authorization system. It automatically exchanges authorization data with approaching mobile devices without requiring manual intervention, serving as a mediator that simplifies the interaction while handling the complexity of authorization management internally.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Facilitates quick, secure device registration by automatically transmitting authorization information, reducing operator distraction and improving network operation efficiency.

Implementation Method 1

an NFC element arranged on the stationary element, and that an NFC counterpart element is arranged on the mobile device, wherein, when the mobile device approaches the stationary element, authorization information can be transmitted from the NFC counterpart element to the NFC element

Methodology Applied
Scientific EffectNear Field Communication (NFC): Electromagnetic Induction

Data Source

PatentEP3334140B1Authorization in an intercom network, mobile device and process
Publication Date: 2026.03.04 RIEDEL COMMUNICATIONS INTERNATIONAL GMBH
  • EP3334140B1 patent drawingFigure 1
  • EP3334140B1 patent drawingFigure 2
  • EP3334140B1 patent drawingFigure 3

AI summary

The intercom network (10) for real-time audio communication between participants (11a, 11b, 11c, 11d, 11e, 11f, 15a, 15b) is shown and described, comprising at least one stationary element (12a, 12b), such as a base (13), to which the participants (11a, 11b, 11c, 11d, 11e, 11f) are connected, and at least one mobile terminal (15a, 15b), such as a beltpack (16) or mobile microphone (17), which has an audio input (18a, 18b), wherein audio signals can be wirelessly transmitted from the mobile terminal within the DECT frequency range to the stationary element or to another stationary participant, wherein the stationary element has a participant management device (19) which transmits the audio signals to the stationary element (12a, 12b). connected participants (11a, 11b, 11c, 11d, 11e, 11f, 15a, 15b) are administered, and an authorization check is carried out by the institution to register the mobile device with the stationary element,wherein the device (19) comprises an NFC element (20a) arranged on the stationary element (12a), and wherein an NFC counterpart element (21a, 21b) is arranged on the mobile device (15a, 15b), wherein authorization information can be transmitted from the NFC counterpart element to the NFC element when the mobile device approaches the stationary element.