Meta platforms technologies, llc (20240126367). INDIRECT TIME OF FLIGHT (TOF) DEPTH SENSING FOR EYE TRACKING simplified abstract
Contents
- 1 INDIRECT TIME OF FLIGHT (TOF) DEPTH SENSING FOR EYE TRACKING
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 INDIRECT TIME OF FLIGHT (TOF) DEPTH SENSING FOR EYE TRACKING - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 Original Abstract Submitted
INDIRECT TIME OF FLIGHT (TOF) DEPTH SENSING FOR EYE TRACKING
Organization Name
meta platforms technologies, llc
Inventor(s)
Gaetano Aiello of Redmond WA (US)
Youmin Wang of Bellevue WA (US)
INDIRECT TIME OF FLIGHT (TOF) DEPTH SENSING FOR EYE TRACKING - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240126367 titled 'INDIRECT TIME OF FLIGHT (TOF) DEPTH SENSING FOR EYE TRACKING
Simplified Explanation
The abstract describes an eye tracking system utilizing three-dimensional sensing with time of flight technology. Instead of measuring the time of arrival of emitted photons directly, the system modulates the light intensity of the transmitted laser beam and computes the phase change of the return beam by comparing it with the transmit waveform. The modulation frequency is resolved using radio frequency mixing and digital signal processing techniques, with various phase detection systems and techniques applied.
- Three-dimensional eye tracking system using time of flight technology
- Modulation of light intensity of transmitted laser beam for phase detection
- Resolution of modulation frequency using RF mixing and digital signal processing
- Various phase detection systems and techniques applied
Potential Applications
The technology can be used in various fields such as virtual reality, augmented reality, human-computer interaction, medical diagnostics, and biometric security systems.
Problems Solved
The system provides accurate and real-time eye tracking data, enabling improved user experiences in virtual and augmented reality applications, precise medical diagnostics, and enhanced security measures.
Benefits
The benefits of this technology include high accuracy, real-time tracking, non-invasive measurement, and versatility in applications across different industries.
Potential Commercial Applications
Commercial applications of this technology include eye tracking for gaming, medical diagnostics, security systems, and research in human behavior and cognition.
Possible Prior Art
Prior art in eye tracking systems using time of flight technology includes research papers, patents, and commercial products from companies specializing in eye tracking and sensing technologies.
What are the limitations of the eye tracking system described in the patent application?
The patent application does not mention any specific limitations of the eye tracking system, leaving room for further investigation and testing to identify any potential drawbacks or challenges in its implementation.
How does the modulation frequency affect the accuracy of the eye tracking system?
The modulation frequency plays a crucial role in determining the accuracy of the eye tracking system by influencing the resolution of the phase detection and the overall precision of the tracking data. A higher modulation frequency can lead to more precise measurements but may also introduce noise and other technical challenges that need to be addressed for optimal performance.
Original Abstract Submitted
an eye tracking system employing three-dimensional (3d) sensing using time of flight is provided. instead of directly measuring the time of arrival of the emitted photons, the light intensity of the transmitted laser beam is modulated, and a phase change of the return beam computed by comparison with the transmit waveform. the modulation frequency is resolved with radio frequency (rf) mixing and digital signal processing techniques. a variety of phase detection systems and techniques including, but not limited to, quadrature analog front end detection and analog homodyne phase detection are applied. the modulation frequency may, depending on phase detection technique, be sinusoidal or pulsed.
