Patents by Inventor Peter Blixt

Peter Blixt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20170316264
    Abstract: A system for determining a gaze direction of a user of a wearable device is disclosed. The system may include a primary lens, an illuminator, an image sensor, and an interface. The illuminator may include a light guide, may be disposed at least partially on or in the primary lens, and may be configured to illuminate at least one eye of a user. The image sensor may be disposed on or in the primary lens, and may be configured to detect light reflected by the at least one eye of the user. The interface may be configured to provide data from the image sensor to a processor for determining a gaze direction of the user based at least in part on light detected by the image sensor.
    Type: Application
    Filed: July 17, 2017
    Publication date: November 2, 2017
    Applicant: Tobii AB
    Inventors: Simon Gustafsson, Anders Kingbäck, Peter Blixt, Richard Hainzl, Mårten Skogö
  • Patent number: 9791912
    Abstract: A personal computer system comprises a visual display, an imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer of the visual display, and identifying means for recognizing the viewer with reference to one of a plurality of predefined personal profiles. The personal computer system further comprises an eye-tracking processor for processing the eye-tracking data. According to the invention, the eye-tracking processor is selectively operable in one of a plurality of personalized active sub-modes associated with said personal profiles. The sub-modes may differ with regard to eye-tracking related or power-management related settings. Further, the identifying means may sense an identified viewer's actual viewing condition (e.g., use of viewing aids or wearing of garments), wherein the imaging device is further operable in a sub profile mode associated with the determined actual viewing condition.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: October 17, 2017
    Assignee: Tobii AB
    Inventors: John Mikael Elvesjö, Anders Kingbäck, Gunnar Troili, Mårten Skogö, Henrik Eskilsson, Peter Blixt
  • Publication number: 20170293799
    Abstract: According to the invention, an image sensor is disclosed. The image sensor may include a plurality of pixels. Each pixel of a first portion of the plurality of pixels may include a near-infrared filter configured to block red, green, and blue light; and pass near-infrared light. Each pixel of a second portion of the plurality of pixels may be configured to receive at least one of red, green, or blue light; and receive near-infrared light.
    Type: Application
    Filed: April 7, 2017
    Publication date: October 12, 2017
    Applicant: Tobii AB
    Inventors: Mårten Skogö, Peter Blixt, Henrik Jönsson
  • Patent number: 9779299
    Abstract: A method of presenting gaze-point data of a subject detected by an eye-tracking unit includes presenting a test scene picture acquired by a camera unit, and displaying shapes on the test scene picture. The shapes represent momentary gaze points of the subject.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: October 3, 2017
    Assignee: TOBII AB
    Inventors: Johan Strombom, Marten Skogo, Per Nystedt, Simon Gustafsson, John Mikael Holtz Elvesjo, Peter Blixt
  • Publication number: 20170249509
    Abstract: A method includes obtaining an image of an eye in a bright-pupil imaging mode in which a retinal retro-reflection complements the image of the eye in the bright-pupil mode, and obtaining an image of the eye in a dark-pupil imaging mode in which a corneo-scleral retro-reflection complements the image of the eye in the dark-pupil mode. One of the bright-pupil imaging mode and the dark-pupil imaging mode is selected based on quality of obtained images.
    Type: Application
    Filed: May 15, 2017
    Publication date: August 31, 2017
    Applicant: TOBII AB
    Inventors: Peter Blixt, Gunnar Troili, Anders Kingbäck, John Mikael Elvesjö, Mårten Skogö
  • Publication number: 20170224211
    Abstract: An eye tracker comprising at least one illuminator for illuminating an eye, at least two cameras for imaging the eye and a controller is disclosed. The configuration of the reference illuminator(s) and cameras is such that, at least one camera is coaxial with a reference illuminator and at least one camera is non-coaxial with a reference illuminator. On the one hand, the controller is adapted to select one of the cameras to be active with the aim of maximising an image quality metric and avoiding obscuring objects. On the other hand, the eye tracker is operable in a dual-camera mode to improve accuracy. The invention further provides a method and computer-program product for selecting a combination of an active reference illuminator from a plurality of reference illuminators and an active camera from a plurality of cameras.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 10, 2017
    Inventors: Peter Blixt, Gunnar Troili, Anders Kingbäck, John Mikael Elvesjö, Mårten Skogö
  • Publication number: 20170220107
    Abstract: A visual display includes hidden reference illuminators adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.
    Type: Application
    Filed: April 10, 2017
    Publication date: August 3, 2017
    Inventors: Peter Blixt, Anders Kingback, Bengt Rehnstrom, John Elvesjö, Mattias Kuldkepp
  • Patent number: 9649029
    Abstract: A method includes obtaining an image of an eye in a bright-pupil imaging mode in which a retinal retro-reflection complements the image of the eye in the bright-pupil mode, and obtaining an image of the eye in a dark-pupil imaging mode in which a cornea-scleral retro-reflection complements the image of the eye in the dark-pupil mode. One of the bright-pupil imaging mode and the dark-pupil imaging mode is selected based on quality of obtained images.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: May 16, 2017
    Assignee: Tobii AB
    Inventors: Peter Blixt, Gunnar Troili, Anders Kingbäck, John Mikael Elvesjö, Mårten Skogö
  • Patent number: 9632180
    Abstract: A visual display includes hidden reference illuminators adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: April 25, 2017
    Assignee: TOBII AB
    Inventors: Peter Blixt, Anders Kingback, Bengt Rehnstrom, John Elvesjö, Mattias Kuldkepp
  • Publication number: 20170090564
    Abstract: A system for determining a gaze direction of a user in a wearable device is disclosed. The system may include a display device, a primary lens, an illuminator, and a plurality of imaging device. The primary lens may be disposed in front of the display device. The illuminator may be configured to illuminate an eye of a user. The plurality of imaging devices may be disposed on or in the primary lens to detect light reflected by the eye of the user.
    Type: Application
    Filed: September 26, 2016
    Publication date: March 30, 2017
    Applicant: Tobii AB
    Inventors: Simon Gustafsson, Anders Kingbäck, Peter Blixt, Richard Hainzl
  • Publication number: 20160353025
    Abstract: An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein: the imaging device is switchable between at least an active mode and a ready mode; the imaging device is configured, in the active mode, to use active eye illumination, which enables tracking of a corneal reflection, and to provide eye tracking data which include eye position and eye orientation; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from a value the illumination intensity has in the active mode.
    Type: Application
    Filed: August 10, 2016
    Publication date: December 1, 2016
    Applicant: TOBII AB
    Inventors: Henrik Eskilsson, Mårten Skogö, John Elvesjö, Peter Blixt
  • Patent number: 9495589
    Abstract: A gaze-point detection system includes at least one infrared (IR) signal source to be placed in a test scene as a reference point, a pair of eye glasses to be worn by a person, and a data processing and storage unit for calculating a gaze point of the person wearing the pair of eye glasses. The pair of eye glasses includes an image sensor, an eye-tracking unit and a camera. The image sensor detects IR signals from the at least one IR signal source and generates an IR signal source tracking signal. The eye-tracking unit determines adapted to determine the gaze direction of the person and generates an eye-tracking signal, and the camera acquires a test scene picture. The data processing and storage unit communicates with the pair of eye glasses and calculates the gaze point relative to the test scene picture.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: November 15, 2016
    Assignee: TOBII AB
    Inventors: Johan Strombom, Marten Skogo, Per Nystedt, Simon Gustafsson, John Mikael Holtz Elvesjö, Peter Blixt
  • Publication number: 20160314349
    Abstract: An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein: the imaging device is switchable between at least an active mode and a ready mode; the imaging device is configured to use active eye illumination in the active mode, which enables tracking of a corneal reflection; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from a value the illumination intensity has in the active mode, and to provide eye-tracking data which include eye position but not eye orientation.
    Type: Application
    Filed: July 6, 2016
    Publication date: October 27, 2016
    Applicant: Tobii AB
    Inventors: Henrik Eskilsson, Mårten Skogö, John Elvesjö, Peter Blixt
  • Patent number: 9442566
    Abstract: An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein: the imaging device is switchable between at least an active mode and a ready mode; the imaging device is configured to use active eye illumination in the active mode, which enables tracking of a corneal reflection; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from a value the illumination intensity has in the active mode, and to provide eye-tracking data which include eye position but not eye orientation.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: September 13, 2016
    Assignee: TOBII AB
    Inventors: Henrik Eskilsson, Mårten Skogö, John Elvesjö, Peter Blixt
  • Publication number: 20160139268
    Abstract: A visual display includes hidden reference illuminators adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.
    Type: Application
    Filed: January 25, 2016
    Publication date: May 19, 2016
    Inventors: PETER BLIXT, ANDERS KINGBACK, Bengt REHNSTROM, JOHN ELVESJÖ, Mattias Kuldkepp
  • Patent number: 9244170
    Abstract: A visual display includes hidden reference illuminators adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: January 26, 2016
    Assignee: Tobii Technology AB
    Inventors: Peter Blixt, Anders Hoglund, Bengt Rehnstrom, John Elvesjö, Mattias Kuldkepp
  • Patent number: 9194952
    Abstract: A visual display includes hidden reference illuminators adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: November 24, 2015
    Assignee: TOBII AB
    Inventors: Peter Blixt, Bengt Rehnström, Anders Kingbäck, John Mikael Elvesjö, Mattias Kuldkepp
  • Publication number: 20150145769
    Abstract: An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein: the imaging device is switchable between at least an active mode and a ready mode; the imaging device is configured to use active eye illumination in the active mode, which enables tracking of a corneal reflection; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from a value the illumination intensity has in the active mode, and to provide eye-tracking data which include eye position but not eye orientation.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 28, 2015
    Applicant: TOBII TECHNOLOGY AB
    Inventors: Henrik ESKILSSON, Mårten Skogö, John Elvesjö, Peter Blixt
  • Publication number: 20150136990
    Abstract: A visual display includes hidden reference illuminators adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.
    Type: Application
    Filed: December 30, 2014
    Publication date: May 21, 2015
    Inventors: Peter Blixt, Bengtä Rehnström, Anders Kingbäck, John Mikael Elvesjö, Mattias Kuldkepp
  • Publication number: 20150092163
    Abstract: An eye tracker comprising at least one illuminator for illuminating an eye, at least two cameras for imaging the eye and a controller is disclosed. The configuration of the reference illuminator(s) and cameras is such that, at least one camera is coaxial with a reference illuminator and at least one camera is non-coaxial with a reference illuminator. On the one hand, the controller is adapted to select one of the cameras to be active with the aim of maximising an image quality metric and avoiding obscuring objects. On the other hand, the eye tracker is operable in a dual-camera mode to improve accuracy. The invention further provides a method and computer-program product for selecting a combination of an active reference illuminator from a plurality of reference illuminators and an active camera from a plurality of cameras.
    Type: Application
    Filed: December 8, 2014
    Publication date: April 2, 2015
    Inventors: Peter Blixt, Gunnar Troili, Anders Kingbäck, John Mikael Elvesjö, Mårten Skogö