Patent published on July 27, 2023

Microsoft Develops Cost-Effective Facial Movement Detection System

In recent years, Mixed Reality (MR) has become a rapidly growing industry, with companies like Microsoft developing headsets for the immersive experience. To take the MR experience to the next level, Microsoft has come up with a new system to detect facial movements. This system is small, cost-effective and could revolutionize the way people interact with MR devices.

For the first time, Microsoft is introducing a new system for facial movement detection. This system is composed of three components: a driver circuit, an LC resonance circuit, and a sample and hold circuit. The driver circuit is used to drive the LC resonance circuit, which in turn detects changes in capacitance from a user’s facial movements. The sample and hold circuit then samples and holds the output of the LC resonance circuit to be processed by an Analog-to-Digital Converter (ADC).

As one of the most important components in this system, the LC resonance circuit is designed to detect even the smallest of facial movements. This is achieved by using an array of sense antennas on the headset, which detect the changes in capacitance. The signals are then fed into the LC resonance circuit, which is driven to resonance by the LC driver. The output of the LC resonance circuit is then converted into digital signals by the ADC.

The use of this system could revolutionize the way people interact with MR devices. For instance, this system could be used to identify facial expressions and interpret them to accurately respond to the user’s needs. It could also be used to assist in navigation and provide real-time feedback to the user. Furthermore, it could be used to detect facial gestures and interpret them as commands to the device.

Another important aspect of this system is its low cost. The use of LC resonance circuits and sample and hold circuits, instead of expensive sensors, has enabled Microsoft to offer a cost-effective solution to facial movement detection. This could lead to a significant reduction in the cost of MR headsets and make them more accessible.

In addition, the small size of the system makes it easy to integrate into existing MR headsets. This is an important factor, as it means that the system can be seamlessly integrated into existing MR systems without requiring significant modifications to the existing design.

This technology has been patented by Microsoft Technology Licensing, under patent number US20230236309A1. While it is still uncertain whether this patent will be used in the market or not, this system has the potential to revolutionize the way people interact with MR devices. With its low cost and small size, it could open up a world of possibilities for enhanced user experiences.

Explore more