Patents Assigned to TOBII AB
  • Patent number: 11943420
    Abstract: A user monitoring system receives a first data stream from a first recording device and a second data stream from a second recording device. Each of the first data stream and the second data stream include data relating to an eye of the user. The first data stream and the second data stream overlap temporally. The system processes the first data stream to determine a first blink sequence of the user, processes the second data stream to determine a second blink sequence of the user, and compares the first blink sequence and the second blink sequence to detect a blink pattern present in both the first blink sequence and the second blink sequence. The system determines a temporal offset of the first data stream and the second data stream by comparing respective positions of the blink pattern in the first data stream and the second data stream.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: March 26, 2024
    Assignee: Tobii AB
    Inventors: Jonas Högström, Erik Alsmyr
  • Patent number: 11941170
    Abstract: The invention is related to a method and system for calibrating an eye tracking device configured to track a gaze point of a user on a display The method comprises: presenting a video on the display to a user, the video having a start size and a start position; tracking the gaze of the user, using an image sensor of the eye tracking device; and sequentially completing, for at least one calibration position, the steps of: resizing the video to a calibration size, wherein the calibration size is smaller than the start size, and translating the video to a calibration position; recording calibration data, using the eye tracking device, for the user viewing the video in the calibration position; and resizing the video to a second size that is greater than the start size.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: March 26, 2024
    Assignee: Tobii AB
    Inventors: Sergey Slobodenyuk, Mikkel Rasmussen, Andreas Jansson, Thomas Gaudy, Evgeniia Farkhutdinova, Jonas Högström, Richard Andersson
  • Patent number: 11941172
    Abstract: A method for training an eye tracking model is disclosed, as well as a corresponding system and storage medium. The eye tracking model is adapted to predict eye tracking data based on sensor data from a first eye tracking sensor. The method comprises receiving sensor data obtained by the first eye tracking sensor at a time instance and receiving reference eye tracking data for the time instance generated by an eye tracking system comprising a second eye tracking sensor. The reference eye tracking data is generated by the eye tracking system based on sensor data obtained by the second eye tracking sensor at the time instance. The method comprises training the eye tracking model based on the sensor data obtained by the first eye tracking sensor at the time instance and the generated reference eye tracking data.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: March 26, 2024
    Assignee: Tobii AB
    Inventors: Carl Asplund, Patrik Barkman, Anders Dahl, Oscar Danielsson, Tommaso Martini, Mårten Nilsson
  • Patent number: 11934571
    Abstract: A system, a head-mounted device, a computer program, a carrier, and a method for a head-mounted device comprising an eye tracking sensor, for updating an eye tracking model in relation to an eye are disclosed. First sensor data in relation to the eye are obtained by means of the eye tracking sensor. After obtaining the first sensor data, the eye tracking sensor is moved in relation to the eye. After moving the eye tracking sensor, second sensor data in relation to the eye are obtained by means of the eye tracking sensor. The eye tracking model in relation to the eye is then updated based on the first sensor data and the second sensor data.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: March 19, 2024
    Assignee: Tobii AB
    Inventors: Pravin Kumar Rana, Gerald Bianchi
  • Patent number: 11917126
    Abstract: An augmented reality, virtual reality, or other wearable apparatus comprises an eye tracking device comprising an image sensor, a lens, and one or more processors. In some embodiments, the lens comprises a marker, and the one or more processors are configured to receive an image from the image sensor, wherein the image shows the marker, determine a distance from the image sensor to the marker based on the image, and change a calibration parameter of an eye tracking algorithm based on the distance. In some embodiments, the one or more processors are configured to receive image data from the image sensor, wherein the image data corresponds to an image as observed through the lens, determine a level or pattern of pincushion distortion in the image based on the image data, and change a calibration parameter of an eye tracking algorithm based on the level or the pattern of pincushion distortion.
    Type: Grant
    Filed: February 24, 2023
    Date of Patent: February 27, 2024
    Assignee: Tobii AB
    Inventors: Jonas Andersson, Anders Clausen, Richard Hainzl, Anders Kingbäck, Simon Olin, Mark Ryan, Daniel Tornéus, Björn Nutti, Torbjörn Sundberg, Catarina Tidbeck, Ralf Biedert, Niklas Blomqvist, Dennis Rådell, Robin Thunström
  • Patent number: 11915521
    Abstract: A method for processing a gaze signal in an eye tracking system is provided. The method comprises receiving a first image of a user's eye captured at a first point in time and a second image of the users eye captured at a second point in time subsequent to the first point in time, and determining, based on the first image and the second image, whether eye movement of the user's eye is in fixation or not. The method may further comprise to, on condition that the eye movement of the users eye is in fixation, applying a filter on the gaze signal, wherein the filter is adapted to decrease variance in the gaze signal.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: February 27, 2024
    Assignee: Tobii AB
    Inventor: Johannes Kron
  • Patent number: 11904102
    Abstract: A method for applying adapted colour rendering in relation to intensity of light of wavelengths relevant to the circadian rhythm of a user, a computer program, a carrier, a system and a head-mounted device is disclosed. The method comprises receiving gaze tracking information identifying a gaze vector of the user of the system, and determining a respective location of a first area of the display and a second areas of the display based on the identified gaze vector. A first colour rendering mode is applied in the first area of the display, and a second colour rendering mode is applied in the second area of the display. The first colour rendering mode and the second colour rendering mode differ in relation to a degree of selective adaptation of intensity of light of wavelengths relevant to the circadian rhythm of the user.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: February 20, 2024
    Assignee: Tobii AB
    Inventor: Andrew Ratcliff
  • Patent number: 11906751
    Abstract: The present invention relates to a lens for eye-tracking applications. The lens comprises a first protective layer, arranged to face towards the eye to be tracked when the lens is used for eye-tracking. It also comprises at least one light source, at least partly arranged in the first protective layer, arranged to emit a first light from the first protective layer in a direction towards the eye. Moreover, it comprises at least one image capturing device, at least partly arranged in the first protective layer, arranged to receive the first light within the first protective layer. The lens further comprises an absorptive layer, arranged on the far side of the first protective layer seen from the eye to be tracked when the lens is used for eye-tracking, adapted to be absorptive for wavelengths of the majority of the first light.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: February 20, 2024
    Assignee: Tobii AB
    Inventors: Axel Tollin, Daniel Ljunggren
  • Patent number: 11854213
    Abstract: An eye tracking system comprises at least one illuminator and at least one image sensor configured to produce an image of an eye of a user, the image including illuminator light reflected from the eye of a user. A Fresnel lens is positioned between the image sensor and the eye of the user, through which the image sensor views the eye. Processing circuitry receives an image from the image sensor, identifies glints in the image, assigns an angular position to each glint based on an angular relationship between each glint and a centre of the Fresnel lens and determines how many glints have the same angular position. Glints are classified as false glints if more than a predetermined number of glints have the same angular position.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: December 26, 2023
    Assignee: Tobii AB
    Inventors: Joakim Zachrisson, Simon Johansson, Mikael Rosell
  • Patent number: 11853477
    Abstract: A computer system can be controlled with non-contact inputs through zonal control. In an embodiment, a non-contact input that is an eye-tracking device is used to track the gaze of a user. A computer's display, and beyond, can be separated into a number of discrete zones according to a configuration. Each zone is associated with a computer function. The zones and/or their functions can, but need not, be indicated to the user. The user can perform the various functions by moving gaze towards the zone associated with that function and providing an activation signal of intent. The activation signal of intent can be a contact-required or non-contact action, such as a button press or dwelling gaze, respectively.
    Type: Grant
    Filed: March 2, 2023
    Date of Patent: December 26, 2023
    Assignee: Tobii AB
    Inventors: David Figgins Henderek, Anders Olsson, Magnus Carl Olof Sävmarker, Staffan Wingren
  • Patent number: 11853539
    Abstract: Visualizable data (Din) are obtained that represent a scene (S) with at least one object (110, 120, 130). The visualizable data (Din) describe the scene (S) as seen from a position (P). First and second measures (L1; L2) are determined, which represent extensions of one of the objects (110) in a smallest and a largest dimension respectively. An object aspect ratio (R) is calculated that represents a relationship between the first and second measures (L1; L2). Based on the object aspect ratio (R), a selection margin (M) is assigned to the object (110). The selection margin designates a zone outside of the object (110) within which zone the object (110) is validly selectable for manipulation in addition to an area (A11) of the object (110) shown towards a view (V) thereof as seen from the position (P). Thus, it is made easier to manipulatable the visualizable data (Din) in response to user input, for instance in the form of gaze-based selection commands.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: December 26, 2023
    Assignee: Tobii AB
    Inventors: Robin Thunström, Staffan Widegarn Åhlvik
  • Publication number: 20230405949
    Abstract: An optical system and method for producing the same comprising molding components including a waveguide directly within a lens, by placing the components within a UV transparent mold.
    Type: Application
    Filed: August 16, 2023
    Publication date: December 21, 2023
    Applicant: TOBII AB
    Inventors: LUTZ KÖRNER, DANIEL PIOTROWSKI
  • Patent number: 11830168
    Abstract: A method for improved compression and filtering of images for foveated transport applications. The improvements including calculating along at least one axis of the full-resolution image data set, the distance from the foveal point to edges of full-resolution image data set, calculating the distance from each edge of the full resolution data set to the closest point on a foveal region surrounding the foveal point, calculating the distribution of available space in the adjacent peripheral regions of the image using a compression parameter, and calculating a compression curve wherein the compression of both adjacent peripheral regions is such that neither side of the adjacent peripheral regions are compressed more than the other.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: November 28, 2023
    Assignee: Tobii AB
    Inventors: Alexey Bezugly, Dennis Rådell, Ritchie Brannan
  • Patent number: 11823413
    Abstract: An eye tracking system configured to: receive a plurality of right eye images of a right eye of a user; receive a plurality of left eye images of a left eye of a user, each left eye image corresponding to a right eye image in the plurality of right eye images; detect a pupil and determine an associated pupil signal, for each of the plurality of right eye images and each of the plurality of left eye images; calculate a right eye pupil variation of the pupil signals for the plurality of right eye images and a left eye pupil variation of the pupil signals for the plurality of left eye images; and determine a right eye weighting and a left eye weighting based on the right eye pupil variation and the left eye pupil variation.
    Type: Grant
    Filed: January 25, 2023
    Date of Patent: November 21, 2023
    Assignee: Tobii AB
    Inventors: Mikael Rosell, Simon Johansson, Pravin Kumar Rana, Yimu Wang, Gilfredo Remon Salazar
  • Publication number: 20230314797
    Abstract: The invention is related to an assembly for an eye-tracking system, the assembly comprising a substantially ring-shaped carrier, a seat in the carrier, a plurality of light emitting devices disposed on a substrate, wherein the substrate is positioned against the seat, an alignment window comprising an opening extending through the carrier, an imaging device provided within and supported by the alignment window, wherein the imaging device is facing inwardly, and wherein the carrier is configured to guide light emitted from the plurality of light emitting devices towards an eye of a user when the assembly is used with the eye tracking system. The invention also relates to a corresponding head-mounted device utilizing the assembly.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Applicant: Tobii AB
    Inventors: Kayla Kearns, Louise Wändesjö, Fredrik Norén, Ola Glimåker, Mårten Selin
  • Patent number: 11716365
    Abstract: Data packets containing gaze data are streamed from an eyetracker to a client via a driver unit by receiving, repeatedly, gaze data packets in a first interface; and, providing, repeatedly, via a second interface, gaze data packets. The client sends a request message to the driver unit. The request message defines a delivery point in time in a first time frame structure at which delivery point in time in each frame of the first time frame structure the gaze data packet shall be provided to the client via the second interface. An offset is calculated between a reception point in time and the delivery point in time. The reception point in time indicates when a gaze data packet is received from the eyetracker relative to the first time structure. An adjusted data acquisition instance is assigned based on the offset. The adjusted data acquisition instance represents a modified point in time in a second time frame structure when at least one future gaze data packet shall be produced by the eyetracker.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: August 1, 2023
    Assignee: Tobii AB
    Inventors: Anders Clausen, Daniel Tornéus
  • Patent number: 11714487
    Abstract: An eye tracking device determines a user's gaze point on a display device and a setting for a foveated region associated with a fixation position, based on a first location of the fixation position. The eye tracking device defines at least one of a size, shape, or positioning of the foveated region relative to the fixation position. The eye tracking device determines a second location of the fixation position associated with a change of user gaze and changes the foveated region setting. At least one of the shape or size of the foveated region changes based on the eye tracking device determining that a distance difference between the first and second locations is larger than a threshold. At least one of the size or the shape of the foveated region is continuously adjusted based on the fixation position being in smooth pursuit between the first location and the second location.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: August 1, 2023
    Assignee: Tobii AB
    Inventor: Robin Thunström
  • Patent number: 11715231
    Abstract: Head pose information may be determined using information describing a fixed gaze and image data corresponding to a user's eyes. The head pose information may be determined in a manner that is disregards facial features with the exception of the user's eyes. The head pose information may be usable to interact with a user device.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: August 1, 2023
    Assignee: Tobii AB
    Inventor: Mårten Skogö
  • Patent number: 11709545
    Abstract: A method for determining if a user's gaze is directed in the direction of a zone of interest in a 3D scene comprises: providing a 3D scene containing a zone of interest; associating a property with the zone of interest; creating a bitmap representing the location of the zone of interest in a projected view of the 3D scene, each pixel of the bitmap to which the zone of interest is projected storing the property of the zone of interest; detecting the direction of the user's gaze; using the bitmap to determine if the detected user's gaze is directed in the direction of the zone of interest.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: July 25, 2023
    Assignee: Tobii AB
    Inventors: Fredrik Lindh, Mattias Gustavsson, Anders Vennström, Andreas Edling
  • Patent number: 11697257
    Abstract: A method for mounting functional elements in a lens includes mounting the functional elements on a foil, applying a closed contour alignment surface of an alignment tool having a central opening surrounded by the closed contour on the foil portion opposite to the mounted function elements, applying underpressure on the central opening to maintain the foil portion with the mounted functional elements on the alignment tool, cutting a flap including the foil portion and supporting the functional elements out of the foil, positioning and aligning the flap through actuator, fixing the position of the flap against the adjacent foil surface, embedding the foil with the mounted functional elements in a predetermined distance to the front surface of a mould, and casting and curing the lens with the embedded foil.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: July 11, 2023
    Assignees: Metamaterial Inc., Tobii AB
    Inventors: Lutz Körner, Peter Hess, Alexander Greber, Urs Büttiker, Reto Müller, Anders Höglund, Daniel Ljunggren