Display Viewing-Area Detection Using UWB Device Positioning

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Solution Overview

Problem

Existing methods for determining user presence in front of a display device, such as infrared sensors and cameras, suffer from limitations like privacy concerns, accuracy, and inability to seamlessly integrate with connected devices, limiting personalized content delivery and user experience.

Innovation Solution

Utilizing Ultra-Wideband (UWB) technology for precise device positioning within a defined viewing area, enabling accurate detection of user devices for targeted content delivery, audience measurement, seamless device switching, and enhanced user authentication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Difficulty of detecting and measuring

If camera-based or infrared systems are used to detect user presence, then detection capability is provided, but privacy concerns and accuracy limitations arise

Engineering Contradiction:

Improveuser presence detectionVSAvoiddetection accuracy

Core Design Contradiction:

Difficulty of detecting and measuringVSMeasurement precision

Solution Approach 1:

The patent replaces camera-based or infrared systems with UWB (Ultra-Wideband) wireless communication technology for detecting user presence. This substitution eliminates privacy concerns associated with cameras while providing more accurate positioning capability through precise measurement of time-of-flight and signal characteristics, directly resolving the contradiction between detection capability and accuracy/privacy concerns

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a wireless communication signal as an intermediary between the user device and the display device. Instead of directly observing the user through cameras or infrared sensors, the system uses UWB signals transmitted between devices to indirectly determine user presence and location, achieving accurate detection without invading user privacy

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If connected devices are integrated for content delivery, then personalized content delivery is enabled, but device complexity increases

Engineering Contradiction:

Improvepersonalized content deliveryVSAvoidsystem integration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent makes the wireless communication technology serve multiple functions: it simultaneously enables device detection, user presence determination, positioning, and content delivery coordination. This multi-functionality approach allows personalized content delivery without proportionally increasing system complexity, as the same UWB infrastructure supports all these features

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4661406A1Method for enhanced content distribution

Publication Date: 2025.12.10 NAGRAVISION SRL

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AI summary

The method comprising the steps of: A- detecting, by a first device (100) connected with a display screen (150), if a second device (200) is present in a viewing area (A1) of the display screen (150), said viewing area (A1) having predetermined boundaries (156, 157, 158), using a wireless communication technology allowing for a positioning of the second device (200) in space, B- in response to a positive detection in the step A, executing a predetermined process.