Patents Assigned to Tobii Technology AB
  • 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: 9213404
    Abstract: The present invention relates to control of a computer system, which includes a data processing unit, a display and an eye tracker adapted to register a user's gaze point with respect to the display. The data processing unit is adapted to present graphical information on the display, which includes feedback data reflecting the user's commands entered into the unit. The data processing unit is adapted to present the feedback data such that during an initial phase, the feedback data is generated based on an absolute position of the gaze point. An imaging device of the system is also adapted to register image data representing movements of a body part of the user, and to forward a representation of the image data to the data processing unit. Hence, during a phase subsequent to the initial phase, the data is instead generated based on the image data.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: December 15, 2015
    Assignee: TOBII TECHNOLOGY AB
    Inventors: John Elvesjö, Anders Olsson, Johan Sahlén
  • Patent number: 9179838
    Abstract: An eye/gaze tracker with first and second light sources each configured to illuminate an eye of a subject and controlled to selectively emit light towards the eye in such a manner that within an operation sequence the eye is illuminated by the first light source during at least one first interval and by the second light source during at least one second interval. An image sensor has a plurality of photodiodes each of which is associated with first and second charge storages configured to store electric charges based on an amount of light reaching the photodiode. At least one switch of the image sensor is controlled such that the electric charges are stored in the first charge storage as a result of the illumination during the at least one first interval and in the second charge storage as a result of the illumination during the at least one second interval.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 10, 2015
    Assignee: Tobii Technology AB
    Inventors: Marten Skogo, Henrik Jonsson, John Elvesjo
  • Patent number: 9147248
    Abstract: A gaze tracking device is calibrated to a display unit by presenting graphical guide objects on an active area thereof, which designate distinctive features reflecting how the device may be positioned n a first side of a frame of the display unit. User commands move the objects on the display's active area in a first direction parallel to the first side of the frame. A position value designating an actual position for the gaze tracking device on the first side of the frame is assigned based on a current position of the graphical guide objects on the active area. An offset value is calculated based on the assigned position value and a known measure of the active area. The offset value represents a distance in the first direction between a well-defined point of the gaze tracking device and a well-defined point of the first side.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: September 29, 2015
    Assignee: TOBII TECHNOLOGY AB
    Inventors: Anders Kaplan, Gunnar Troili, John Elvesjo
  • 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: 20150130740
    Abstract: A control module for generating gesture based commands during user interaction with an information presentation area is provided. The control module is configured to acquire user input from a touchpad and gaze data signals from a gaze tracking module; and determine at least one user generated gesture based control command based on a user removing contact of a finger of the user with the touchpad; determine a gaze point area on the information presentation area including the user's gaze point based on at least the gaze data signals; and execute at least one user action manipulating a view presented on the graphical information presentation area based on the determined gaze point area and at least one user generated gesture based control command, wherein the user action is executed at said determined gaze point area.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Applicant: TOBII TECHNOLOGY AB
    Inventors: Markus CEDERLUND, Robert GAVELIN, Anders ENNSTRÖM, Anders KAPLAN, Anders OLSSON, Mårten SKOGÖ, Erland GEORGE-SVAHN
  • Patent number: 8976110
    Abstract: A personal computer system includes a visual display, an imaging device adapted to provide eye-tracking data by imaging the face of a viewer of the visual display, and an input device for accepting eye-tracking control data and other input data. The imaging device is switchable between at least an active mode, a ready mode and an idle mode, and the switching time from the idle mode to the active mode is longer than the switching time from the ready mode to the active mode. The eye-tracking data provided in the ready mode may include eye position but not eye orientation. The system may include a dedicated input device for forcing the imaging device into active mode by directly triggering an interrupt; alternatively, the dedicated input device forces it permanently into idle mode.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: March 10, 2015
    Assignee: Tobii Technology AB
    Inventors: Henrik Eskilsson, Mårten Skogö, John Elvesjö, Peter Blixt
  • Publication number: 20150061996
    Abstract: A portable eye tracker device is disclosed which includes a frame, at least one optics holding member, and a control unit. The frame may be adapted for wearing by a user and include an eyeglass frame having a nose bridge. The at least one optics holding member may include at least one illuminator configured to selectively illuminate at least a portion of at least one eye of the user and at least one image sensor configured to capture image data representing images of at least a portion of at least one eye of the user. The optics holding member may be coupled with the nose bridge. The control unit may be configured to control the at least one illuminator for the selective illumination of at least a portion of at least one eye of the user, and receive the image data from the at least one image sensor.
    Type: Application
    Filed: May 19, 2014
    Publication date: March 5, 2015
    Applicant: TOBII TECHNOLOGY AB
    Inventors: Simon Gustafsson, Jonas Andersson, Erik Engwall, Richard Hainzl, Lars-Ola Leksén, Markus Cederlund
  • Patent number: 8944600
    Abstract: An eye tracker includes at least one illuminator for illuminating an eye, at least two cameras for imaging the eye and a controller. The configuration of the reference illuminator 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. The controller selects one of the cameras to be active to increase an image quality metric and avoid obscuring objects. The eye tracker is operable in a dual-camera mode to improve accuracy.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: February 3, 2015
    Assignee: Tobii Technology AB
    Inventors: Peter Blixt, Gunnar Troili, Anders Kingback, John Mikael Elvesjö, Mårten Skogö
  • Publication number: 20140354539
    Abstract: A personal computer system provides a gaze-controlled graphical user interface having a bidirectional and a unidirectional interaction mode. In the bidirectional interaction mode, a display shows one or more graphical controls in motion, each being associated with an input operation to an operating system. A gaze tracking system provides gaze point data of a viewer, and a matching module attempts to match a relative gaze movement against a relative movement of one of the graphical controls. The system includes a selector which is preferably controllable by a modality other than gaze. The system initiates a transition from the unidirectional interaction mode to the bidirectional interaction mode in response to an input received at the selector. The display then shows graphical controls in motion in a neighbourhood of the current gaze point, as determined based on current gaze data.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicant: Tobii Technology AB
    Inventors: Mårten SKOGÖ, John Mikael ELVESJÖ, Anders OLSSON
  • Patent number: 8902070
    Abstract: A monitoring system and method for monitoring and/or predicting drowsiness of a driver of a vehicle or a machinery operator are provided. A set of infrared, IR, or near infrared, NIR, light sources, is arranged such that an amount of the light emitted from the light source incidents on an eye of the driver or operator. The light that impinges on the eye of the driver or operator forms a virtual image of the signal sources on the eye including the sclera and/or cornea. An image sensor obtains consecutive images capturing the reflected light, wherein each image will contain glints from at least a subset or all of the light sources. A drowsiness index can be determined based on the extracted information of the glints of the sequence of images, wherein the drowsiness index indicates a degree of drowsiness of the driver or operator.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: December 2, 2014
    Assignee: Tobii Technology AB
    Inventors: Miroslav Kobetski, Peter Blixt, Johnny Holmberg, John Mikael Elvesjo
  • Publication number: 20140320688
    Abstract: An image sensing apparatus has a light sensitive area and a control unit. The light sensitive area registers image data in response to an incoming amount of light, and is operable in an active mode wherein image data can be read out there from as well as in a standby mode wherein image data cannot be read out. The control unit produces a control signal setting the light sensitive area to operate in the active mode and the standby mode respectively in a cyclic manner during an operation period, which preferably encompasses multiple data frame read-outs of image data from the light sensitive area.
    Type: Application
    Filed: April 10, 2014
    Publication date: October 30, 2014
    Applicant: Tobii Technology AB
    Inventors: Marten Skogo, Henrik Jonsson, Mattias O. Karlsson, Mattias Kuldkepp, John Elvesjo, Ingemar Mattias Karlsson
  • Publication number: 20140310256
    Abstract: The invention generally relates to computer implemented systems and methods for utilizing detection of eye movements in connection with interactive graphical user interfaces and, in particular, for utilizing eye tracking data to facilitate and improve information search and presentation in connection with interactive graphical user interfaces. A gaze search index is determined based on information that has been presented on an information presentation area and gaze data signals. The gaze search index comprises links between gaze search parameters and presented information that satisfies gaze filter criteria for respective gaze search parameter. A user can initiate query searches for information on the computer device or on information hosts connectable to the computer device via networks by using combinations of gaze search parameters of the gaze search index and non gaze search parameters of a non gaze search index.
    Type: Application
    Filed: October 29, 2012
    Publication date: October 16, 2014
    Applicant: TOBII TECHNOLOGY AB
    Inventors: Anders Olsson, Mårten Skogö
  • Publication number: 20140293226
    Abstract: A subject (180) is illuminated whose movements of at least one eye are to be registered by an eye-tracker for producing resulting data (DEYE). To this aim, a coherent light source in light producing means (140) produces at least one well-defined light beam (L1, L2). A diffractive optical element is arranged between the coherent light source and an output from the light producing means (140). The diffractive optical element is configured to direct a light beam (L1) towards at least a first designated area (A1) estimated to cover the at least one eye of the subject (180). Image registering means (150) registers light from the at least one light beam (L1, L2) having been reflected against the subject (180). The resulting data (DEYE) are produced in response to these light reflections, which resulting data (DEYE) represent movements of the at least one eye of the subject (180).
    Type: Application
    Filed: June 14, 2012
    Publication date: October 2, 2014
    Applicant: TOBII TECHNOLOGY AB
    Inventors: Richard Hainzl, Mattias Kuldkepp, Peter Blixt, Mårten Skogö
  • Publication number: 20140268055
    Abstract: An eye/gaze tracker with first and second light sources each configured to illuminate an eye of a subject and controlled to selectively emit light towards the eye in such a manner that within an operation sequence the eye is illuminated by the first light source during at least one first interval and by the second light source during at least one second interval. An image sensor has a plurality of photodiodes each of which is associated with first and second charge storages configured to store electric charges based on an amount of light reaching the photodiode. At least one switch of the image sensor is controlled such that the electric charges are stored in the first charge storage as a result of the illumination during the at least one first interval and in the second charge storage as a result of the illumination during the at least one second interval.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: Tobii Technology AB
    Inventors: Marten Skogo, Henrik Jonsson, John Elvesjo
  • Publication number: 20140247232
    Abstract: A computer system can be controlled with non-contact inputs, such as eye-tracking devices. A computer can enlarge a portion of a display adjacent a first gaze target in response to detecting a first action (e.g., pressing a touchpad). The computer can then allow a user to position a second gaze target in the enlarged portion (e.g., by looking at the desired location) and perform a second action in order to perform a computer function at that location. The enlarging can allow a user to identify a desired location for a computer function (e.g., selecting an icon) with greater precision.
    Type: Application
    Filed: March 3, 2014
    Publication date: September 4, 2014
    Applicant: TOBII TECHNOLOGY AB
    Inventors: Erland George-Svahn, David Figgins Henderek, Rebecka Lannsjö, Mårten Skogö, John Elvesjö
  • Publication number: 20140247215
    Abstract: A computer system can be controlled with non-contact inputs, such as eye-tracking devices. A visual indicator can be presented on a display to indicate the location where a computer function will take place (e.g., a common cursor). The visual indicator can be moved to a gaze target in response to continued detection of an action (e.g., touchpad touch) by a user for a predetermined period of time. The delay between the action and the movement of the visual indicator can allow a user time to “abort” movement of the visual indicator. Additionally, once the visual indicator has moved, the visual indicator can be controlled with additional precision as the user moves gaze while continuing the action (e.g., continued holding of the touchpad).
    Type: Application
    Filed: March 3, 2014
    Publication date: September 4, 2014
    Applicant: Tobii Technology AB
    Inventors: Erland George-Svahn, David Figgins Henderek, Rebecka Lannsjö, Mårten Skogö, John Elvesjö
  • Publication number: 20140247210
    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: Application
    Filed: March 3, 2014
    Publication date: September 4, 2014
    Applicant: Tobii Technology AB
    Inventors: David Figgins Henderek, Anders Olsson, Magnus Carl Olof Sävmarker, Staffan Wingren
  • Publication number: 20140247208
    Abstract: Waking a computing device from a stand-by mode may include determining a wake zone relative to a display device and, when the computing device is in stand-by mode, detecting a gaze point relative to the display device. In response to determining that the gaze point is within the wake zone, a wake command is generated and passed to a program module, such as the operating system, to cause the program module to wake the computing device from the stand-by mode. When the computing device is not in stand-by mode, another gaze point may be detected and, in response to determining that the other gaze point is within the vicinity of a selectable stand-by icon, the stand-by command is generated and passed to the program module to cause the program module to place the computing device into the stand-by mode.
    Type: Application
    Filed: May 14, 2013
    Publication date: September 4, 2014
    Applicant: Tobii Technology AB
    Inventors: David Henderek, Mårten Skogö, John Elvesjö
  • Publication number: 20140180619
    Abstract: A gaze tracking device is calibrated to a display unit by presenting graphical guide objects on an active area thereof, which designate distinctive features reflecting how the device may be positioned n a first side of a frame of the display unit. User commands move the objects on the display's active area in a first direction parallel to the first side of the frame. A position value designating an actual position for the gaze tracking device on the first side of the frame is assigned based on a current position of the graphical guide objects on the active area. An offset value is calculated based on the assigned position value and a known measure of the active area. The offset value represents a distance in the first direction between a well-defined point of the gaze tracking device and a well-defined point of the first side.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: TOBII TECHNOLOGY AB
    Inventors: Anders Kaplan, Gunnar Troili, John Elvesjo