Patents by Inventor Ville Miettinen
Ville Miettinen 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).
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Publication number: 20210247607Abstract: A display apparatus including pose-tracking means; image renderer per eye; liquid-crystal device including liquid-crystal structure and control circuit; and processor. Processor is configured to: process pose-tracking data to determine user's head pose; detect if rate at which head pose is changing is below predefined threshold rate; if yes, switch on lock mode, select head pose for session of lock mode, and generate output image frames according to head pose during session; if no, generate output image frames according to corresponding head poses of user using pose-tracking data; and display output image frames, whilst shifting light emanating to from pixels of image renderer to multiple positions (P1-P9) in sequential and repeated manner, said shifting causes resolution of output image frames to appear higher than display resolution of image renderer.Type: ApplicationFiled: January 22, 2021Publication date: August 12, 2021Applicant: Varjo Technologies OyInventors: Mikko Strandborg, Ville Miettinen, Klaus Melakari
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Publication number: 20210248941Abstract: A display apparatus including gaze-tracking means, image renderers, liquid-crystal devices including liquid-crystal structure and control circuit, to shift light emanating from given pixel of image renderer to multiple positions, given pixel including colour component; and processor configured to: process gaze-tracking data to determine gaze direction of user's eye; determine gaze point; display first output image frame; detect if magnitude of difference between first output value and initial second output value of colour component of given pixel in first and second output image frames exceeds first threshold difference; when detected that magnitude of difference exceeds first threshold difference, update initial second output value to sum of first output value and product of distance factor and difference between initial second output and first output values; and display second output image frame.Type: ApplicationFiled: January 29, 2021Publication date: August 12, 2021Applicant: Varjo Technologies OyInventors: Mikko Strandborg, Ville Miettinen
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Publication number: 20210248969Abstract: In a display apparatus, a liquid-crystal structure, arranged in front of an image renderer, is controlled to shift light of a given sub-pixel to target positions according to a shifting sequence in a repeated manner, while output image frames are displayed. To generate a given output image frame, a given target position to which the light is to be shifted is determined based on the shifting sequence. An input colour value of the given sub-pixel provided in a given input image frame is then adjusted to generate an output colour value of the given sub-pixel for the given output image frame, based on an output colour value of at least one other sub-pixel whose light overlaps with the given target position during display of a previous output image frame, and a retention coefficient between a colour of the at least one other sub-pixel and a colour of the given sub-pixel.Type: ApplicationFiled: February 4, 2021Publication date: August 12, 2021Applicant: Varjo Technologies OyInventors: Mikko Strandborg, Klaus Melakari, Ville Miettinen
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Patent number: 11055879Abstract: An encoder including data processing arrangement configured to analyze depth information pertaining to input image to identify depth edge(s) and to determine location of depth edge(s); analyze input image to identify edges of objects and to determine locations of said edges; select, amongst edges in input image, matching edge(s) whose location matches with location of depth edge(s); obtain intermediate decoded image by decoding intermediate encoded image obtained from intermediate encoding of input image; analyze intermediate decoded image to identify edges of objects and to determine locations of said edges; determine edge(s) in intermediate decoded image that corresponds to matching edge(s); modify pixel values in input image and/or optical depths in depth information, based on difference in location of determined edge(s) in intermediate decoded image and location of matching edge(s); and encode input image and depth information, upon said modification, to generate encoded data.Type: GrantFiled: April 3, 2020Date of Patent: July 6, 2021Assignee: Varjo Technologies OyInventors: Mikko Strandborg, Ville Miettinen
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Publication number: 20210096368Abstract: A head-mounted display apparatus comprising image renderer, camera, and processor. The processor is configured to: control image renderer to render reference images whilst controlling camera to capture images of user's eyes, each reference image presenting a visual target at corresponding location and optical depth within field of view of user; analyze image of user's eyes that was captured when given reference image was being rendered, to determine gaze directions of user's eyes; and determine, based on gaze directions and location of given visual target presented by given reference image, ocular dominance of user at given optical depth of given visual target. The processor or an imaging unit is configured to generate, based on ocular dominance of user at given optical depth, sequence of extended-reality images to be rendered via image renderer.Type: ApplicationFiled: September 27, 2019Publication date: April 1, 2021Inventors: Thomas Carlsson, Ville Miettinen
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Patent number: 10698482Abstract: Disclosed is gaze-tracking system for head-mounted display apparatus, the gaze-tracking system including a plurality of non-circular light sources that emit light for illuminating a user's eye when the display apparatus is worn by user, at least one camera, and a processor. The processor is configured to control the at least one camera to capture an image of user's eye and reflections of the plurality of non-circular light sources from user's eye; identify at least one of the plurality of non-circular light sources from where at least one of the reflections originated, based upon shapes, rotational orientations and relative positions of the reflections of the plurality of non-circular light sources, to differentiate said reflections from visual artifacts; and detect a gaze direction of user based upon a relative position of a pupil of user's eye with respect to the reflections of the plurality of non-circular light sources.Type: GrantFiled: January 7, 2019Date of Patent: June 30, 2020Assignee: Varjo Technologies OyInventors: Ville Miettinen, Klaus Melakari
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Patent number: 10395111Abstract: A gaze-tracking system for a head-mounted display apparatus includes a first set of illuminators for emitting light to illuminate a user's eye; at least one photo sensor for sensing reflections of the light from the user's eye; at least one actuator for moving at least one of: (i) the first set of illuminators, (ii) the at least one photo sensor; and a processor coupled with the first set of illuminators, the at least one photo sensor and the at least one actuator. The processor is configured to collect and process sensor data from the at least one photo sensor to detect a gaze direction of the user, and to control the at least one actuator to adjust, based upon the detected gaze direction, a position of the at least one of: (i) the first set of illuminators, (ii) the at least one photo sensor.Type: GrantFiled: July 13, 2017Date of Patent: August 27, 2019Assignee: VARJO TECHNOLOGIES OYInventors: Urho Konttori, Klaus Melakari, Thiyagarajan Manihatty Bojan, Ville Miettinen
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Publication number: 20190138094Abstract: Disclosed is gaze-tracking system for head-mounted display apparatus, the gaze-tracking system including a plurality of non-circular light sources that emit light for illuminating a user's eye when the display apparatus is worn by user, at least one camera, and a processor. The processor is configured to control the at least one camera to capture an image of user's eye and reflections of the plurality of non-circular light sources from user's eye; identify at least one of the plurality of non-circular light sources from where at least one of the reflections originated, based upon shapes, rotational orientations and relative positions of the reflections of the plurality of non-circular light sources, to differentiate said reflections from visual artifacts; and detect a gaze direction of user based upon a relative position of a pupil of user's eye with respect to the reflections of the plurality of non-circular light sources.Type: ApplicationFiled: January 7, 2019Publication date: May 9, 2019Inventors: Ville Miettinen, Klaus Melakari
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Publication number: 20190019023Abstract: A gaze-tracking system for a head-mounted display apparatus includes a first set of illuminators for emitting light to illuminate a user's eye; at least one photo sensor for sensing reflections of the light from the user's eye; at least one actuator for moving at least one of: (i) the first set of illuminators, (ii) the at least one photo sensor; and a processor coupled with the first set of illuminators, the at least one photo sensor and the at least one actuator. The processor is configured to collect and process sensor data from the at least one photo sensor to detect a gaze direction of the user, and to control the at least one actuator to adjust, based upon the detected gaze direction, a position of the at least one of: (i) the first set of illuminators, (ii) the at least one photo sensor.Type: ApplicationFiled: July 13, 2017Publication date: January 17, 2019Inventors: Urho Konttori, Klaus Melakari, Thiyagarajan Manihatty Bojan, Ville Miettinen
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Patent number: 10122990Abstract: Disclosed is an imaging system and a method of producing a context image and a focus image for a display apparatus, via the imaging system. The imaging system includes at least one imaging sensor per eye of a user, and a processor coupled thereto. The processor is configured to control the imaging sensors to capture at least one image of a real world environment, and is arranged to be communicably coupled with the display apparatus. Furthermore, the processor is configured to: receive, from the display apparatus, information indicative of a gaze direction of the user; determine a region of visual accuracy of the at least one image, based upon the gaze direction of the user; process the at least one image to generate the context image and the focus image; and communicate the generated context image and the generated focus image to the display apparatus.Type: GrantFiled: June 27, 2017Date of Patent: November 6, 2018Assignee: Varjo Technologies OyInventors: Urho Konttori, Klaus Melakari, Mikko Ollila, Ville Miettinen
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Patent number: 10060007Abstract: The invention relates to a method for preparing a gold-containing solution by chloride leaching from gold-bearing raw materials. A further object of the invention is to provide a method for recovering gold and optionally silver from the prepared gold-containing solution. The invention relates also to a process arrangement for recovering gold and optionally silver.Type: GrantFiled: April 29, 2014Date of Patent: August 28, 2018Assignee: Outotec (Finland) OyInventors: Ville Miettinen, Riina Ahtiainen, Kari Valkama, Erkki Paatero, Kari Hietala, Mika Haapalainen
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Publication number: 20180157908Abstract: A gaze-tracking system for use in a head-mounted display apparatus includes means for producing structured light including a plurality of illuminators for emitting light pulses. Furthermore, the gaze-tracking system includes at least one camera for capturing an image of reflections of the structured light from the user's eye, wherein the image is representative of a form of the reflections and a position of the reflections on an image plane of the at least one camera. Moreover, the gaze-tracking system includes a processor configured to control the means for producing the structured light to illuminate the user's eye with the structured light and to control the at least one camera to capture the image of the reflections of the structured light, and to process the captured image to detect a gaze direction of the user.Type: ApplicationFiled: July 13, 2017Publication date: June 7, 2018Inventors: Oiva Arvo Oskari Sahlsten, Klaus Melakari, Mikko Ollila, Ville Miettinen
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Publication number: 20180160100Abstract: Disclosed is an imaging system and a method of producing a context image and a focus image for a display apparatus, via the imaging system. The imaging system includes at least one imaging sensor per eye of a user, and a processor coupled thereto. The processor is configured to control the imaging sensors to capture at least one image of a real world environment, and is arranged to be communicably coupled with the display apparatus. Furthermore, the processor is configured to: receive, from the display apparatus, information indicative of a gaze direction of the user; determine a region of visual accuracy of the at least one image, based upon the gaze direction of the user; process the at least one image to generate the context image and the focus image; and communicate the generated context image and the generated focus image to the display apparatus.Type: ApplicationFiled: June 27, 2017Publication date: June 7, 2018Inventors: Urho Konttori, Klaus Melakari, Mikko Ollila, Ville Miettinen
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Publication number: 20160068927Abstract: The invention relates to a method for preparing a gold-containing solution by chloride leaching from gold-bearing raw materials. A further object of the invention is to provide a method for recovering gold and optionally silver from the prepared gold-containing solution. The invention relates also to a process arrangement for recovering gold and optionally silver.Type: ApplicationFiled: April 29, 2014Publication date: March 10, 2016Applicant: OUTOTEC (FINLAND) OYInventors: Ville MIETTINEN, Riina AHTIAINEN, Kari VALKAMA, Erkki PAATERO, Kari HIETALA, Mika HAAPALAINEN
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Patent number: 8790516Abstract: The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite.Type: GrantFiled: February 19, 2010Date of Patent: July 29, 2014Assignee: Outotec OyjInventors: Mikko Ruonala, Jaakko Leppinen, Ville Miettinen
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Publication number: 20110309029Abstract: The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite.Type: ApplicationFiled: February 19, 2010Publication date: December 22, 2011Applicant: OUTOTEC OYJInventors: Mikko Ruonala, Jaakko Leppinen, Ville Miettinen
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Publication number: 20100097377Abstract: A first representation of a group of vertices may be received and a second representation of said group of vertices may be determined based on said first representation. A first set of instructions may be executed on said second representation of the group of vertices for providing a third representation of said group of vertices. The first set of instructions is associated with vertex position determination. The third representation of the group of vertices is subjected to a culling process.Type: ApplicationFiled: October 19, 2009Publication date: April 22, 2010Inventors: Jon Hasselgren, Jacob Munkberg, Petrik Clarberg, Tomas Akenine-Moller, Ville Miettinen