Penumbra has been granted a patent for a measurement device and methods for detecting distortion or interference in an environment. The device includes a transmitter and receiver attached to a rigid body, allowing for the measurement of electromagnetic waves and computation of position and orientation. The device can be moved to identify locations with low levels of distortion or interference. GlobalData’s report on Penumbra gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Penumbra, Cardiothoracic surgery instruments was a key innovation area identified from patents. Penumbra's grant share as of September 2023 was 42%. Grant share is based on the ratio of number of grants to total number of patents.
Measurement device for detecting distortion and interference in an environment
A recently granted patent (Publication Number: US11762000B1) describes a method and system for detecting distortion and interference in an environment where a virtual reality (VR) headset is used. The method involves transmitting electromagnetic fields from a measurement device's transmitter at specific frequencies and measuring these fields at the receiver. The measurements are then transmitted to a computing device at different frequencies as the measurement device is moved through the environment.
The patent also discloses the ability to determine interference at a current location in the environment by measuring electromagnetic fields without transmitting them from the transmitter. If an input is detected to switch from interference measurement to distortion measurement, the electromagnetic fields are transmitted from the transmitter, and measurements are taken at the receiver. If the distortion is below a certain threshold, the current location is identified as usable.
The method further includes computing the position and orientation of the receiver relative to the transmitter based on the measurements of electromagnetic fields. A difference is computed between the computed position and a stored value representing the known position and orientation of the receiver. This difference is used to calculate the level of distortion in the location of the measurement device.
A graphical user interface on a computing device can display real-time levels of distortion and interference as the measurement device is moved through the environment. Additionally, the interface can indicate whether the distortion exceeds a threshold value.
The patent also describes the generation of correction data based on the level of distortion at different locations in the environment. This correction data is transmitted to a head-mounted display, which can then correct the computations of sensor location using the received data.
Furthermore, the patent discloses the generation of a data file comprising measurements of electromagnetic fields and corresponding timestamps. This data file can be linked to images of objects or textual data provided by the user.
Overall, this patent presents a method and system for detecting distortion and interference in an environment where a VR headset is used. The technology aims to improve the accuracy and usability of VR experiences by identifying locations with acceptable distortion levels and providing real-time feedback on distortion and interference levels.