Microphone RTLS Tracking for Automatic Speaker Camera Focus
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Solution Overview
Problem
Current technologies do not provide adequate audio and video equality for hybrid meetings in large auditorium-style settings without expensive multiple cameras, camera operators, or specially engineered auditoriums, and existing webcam solutions are inadequate for accurately focusing on speakers in such environments.
Innovation Solution
A system using RFID tags attached to microphones and triangulating sensing devices to automatically focus a webcam on speakers by determining their location within the room, ensuring equal audio and video participation for both in-person and online attendees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cameras and camera operators are used to achieve adequate audio and video equality for hybrid meetings in large auditorium-style settings, then the quality of video capture improves, but the cost and device complexity increase significantly
Solution Approach 1:
The patent replaces the mechanical system of multiple cameras and manual camera operation with an automated acoustic field-based system. RFID tags attached to microphones transmit location data wirelessly to sensing devices, which automatically determine speaker positions and control webcam focusing without mechanical intervention or human operators.
Solution Approach 2:
The system enables self-service automation where the webcam automatically tracks and focuses on speakers without external control. The RFID tags on microphones continuously broadcast location information, and the sensing devices autonomously process this data to adjust camera positioning and focus, eliminating the need for camera operators or complex manual coordination.
2Reliability
If expensive specially engineered auditoriums are used to provide equal audio and video participation, then the meeting quality improves, but the cost increases significantly
Solution Approach 1:
The patent introduces RFID tags as intermediary devices attached to microphones, which serve as mediators between the speaker and the webcam system. These tags transmit location data that enables the sensing devices to automatically track speakers, providing equal audio-video participation without requiring expensive infrastructure modifications to the auditorium itself.
Solution Approach 2:
The system changes the operational parameters of existing equipment by integrating RFID tracking with webcam control. Instead of modifying the physical auditorium infrastructure, the patent alters how existing microphones and webcams function by adding RFID capabilities and automated control algorithms, achieving reliable audio-video equality through parameter optimization rather than infrastructure investment.
3Extent of automation
If RFID tags and triangulating sensing devices are used to automatically focus webcams on speakers, then the automation level improves, but the device complexity increases
Solution Approach 1:
The patent applies multi-functionality by using RFID tags that serve dual purposes: traditional microphone functionality for audio capture and location tracking for video focusing. The sensing devices also perform multiple functions by processing RFID signals to determine speaker positions and simultaneously controlling webcam positioning and focus, reducing the need for separate dedicated systems.
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 equal audio and video participation for all attendees, regardless of their location, by automatically focusing on speakers using RFID tags and triangulating sensing devices, without the need for expensive equipment or operators.
Implementation Method 1
A system using RFID tags attached to microphones and triangulating sensing devices to automatically focus a webcam on speakers by determining their location within the room
Data Source
AI summary
An automated method and computer program product are provided for identifying a physical location of a source of sound which is captured and transmitted by a microphone to a sound system in a venue, wherein one or more persons in the venue are wearing, or carrying, or holding, or speaking into the microphone at the venue. The venue includes a real-time location system (RTLS) having one or more RTLS tags and at least one RTLS receiver for locating a position of each of the RTLS tags in three-dimensional space. At least one of the RTLS tags is fixed to the microphone and transmits a signal that is received by the RTLS receiver. The RTLS is used to identify the position of the RTLS tag fixed to the microphone in the three-dimensional space in the venue by using the signal transmitted from the RTLS tag fixed to the microphone and received by the RTLS receiver to calculate the position of the RTLS tag fixed to the microphone in the three-dimensional space. Actual audio transmitted from the microphone is paired with the RTLS tag fixed to the microphone. The actual audio transmitted from the microphone is identified with the position of the paired RTLS tag fixed to the microphone. The audio transmitted by the microphone is presumed to include sound generated by the one or more persons proximate to the microphone who are wearing, or carrying, or holding, or speaking into the microphone at the venue. The position of the RTLS tag fixed to the microphone in three-dimensional space in the venue is presumed to be proximate to the one or more persons generating the sound who are wearing, or carrying, or holding, or speaking into the microphone. The RTLS receiver is a plurality of RTLS anchors. The RTLS anchors detect signals emitted by the tag fixed to the microphone. The position of the RTLS tag fixed to the microphone in three-dimensional space in the venue is identified by using the signal transmitted from the RTLS tag fixed to the microphone and received by the RTLS anchors to calculate the position of the RTLS tag fixed to the microphone in three-dimensional space.