Steganographic Metadata Relay for Second Screen Privacy
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Solution Overview
Problem
Current second screen experiences using data-over-audio technologies face privacy concerns, require constant listening states, and are limited by line-of-sight issues and signal degradation, hindering widespread implementation and effectiveness.
Innovation Solution
A system that embeds steganographic metadata in broadcast signals, allowing extraction and transmission to a second media device via Bluetooth or Wi-Fi, enabling actions without constant listening and improving signal reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data-over-audio technology is used to transmit steganographic metadata from first media device to second media device, then second screen experience is enabled, but user privacy is compromised due to constant listening state
Solution Approach 1:
The patent introduces an intermediary conversion process where audio signals containing steganographic metadata are converted to visual displays on the first media device, which are then captured by the camera of the second media device. This intermediary visual conversion eliminates the need for constant audio listening, thereby protecting user privacy while still enabling data transmission for second screen experiences.
2Loss of information
If data-over-audio technology is used for transmitting steganographic metadata, then supplemental data can be provided to second device, but signal degradation occurs due to echoes and reflections
Solution Approach 1:
The patent replaces the acoustic transmission mechanism with an optical/visual mechanism. Instead of transmitting data through audio signals that are subject to echoes and reflections, the system converts the steganographic metadata into visual displays that are captured by the camera. This substitution eliminates signal degradation issues associated with acoustic transmission in reflective environments.
3Length of stationary object
If traditional data-over-audio technology is used, then audio channel data recovery is possible, but transmission range is limited by hearing range and line-of-sight requirements
Solution Approach 1:
The patent transitions from acoustic wave propagation in three-dimensional space to visual display capture in two-dimensional plane. By converting audio-based steganographic metadata into visual displays on the screen, the system enables data transmission without line-of-sight constraints, as the camera can capture displayed information from various angles and distances, significantly expanding the effective transmission range.
4Productivity
If data-over-audio technology is used to enable second screen experience, then supplemental information can be transmitted, but application must operate in foreground or background listening causes privacy issues
Solution Approach 1:
The patent introduces a visual intermediary that allows the second media device to receive and process steganographic metadata without requiring the application to continuously access the microphone. The camera-based capture enables background operation without constant listening, improving ease of operation while maintaining data transmission efficiency for second screen experiences.
Data Source
AI summary
A system for providing a second screen experience to an end user is disclosed. The system may include a first media device including one or more processors configured to receive a broadcast signal encoded with steganographic metadata, extract a payload from the steganographic metadata, and transmit a steganographic metadata signal, the steganographic metadata signal including the extracted payload. The system may further include a second media device including one or more processors configured to receive the steganographic metadata signal from the first media device, determine one or more data identifiers within the received steganographic metadata signal, and execute one or more actions based on the one or more data identifiers.