公开(公告)号：US20190392163A1

公开(公告)日：2019-12-26

申请号：US16450152

申请日：2019-06-24

Applicant: North Inc.

Inventor： Stephen Lake ,  Matthew Bailey ,  Aaron Grant ,  Stefan Alexander

IPC: G06F21/62 ,  G06F3/01 ,  G06K9/00 ,  G09G5/12 ,  G06F3/14 ,  G06F21/60 ,  G06F21/31 ,  H04W12/00 ,  H04W12/08

Abstract: Systems, devices, and methods are disclosed for enabling private communication between head-mounted displays. A first user dons a first head-mounted display. The first head-mounted display authenticates that the first user is authorized to view information displayed by the first head-mounted display. In response to positive authentication, the first head-mounted display displays the information to the first user. The first user inputs a selection command via an input interface, such as, for example, gazing at particular information, to select some of the displayed information. The first head-mounted display generates a message based on the user selection, which may be encrypted by the first head-mounted display prior to transmission. The first head-mounted display transmits the message to a second head-mounted display, such that the second head-mounted display displays the message to an eye of a second user wearing the second head-mounted display.

公开(公告)号：US20190384063A1

公开(公告)日：2019-12-19

申请号：US16412542

申请日：2019-05-15

Applicant: North Inc.

Inventor： Matthew Oliver ,  Bergen Fletcher

IPC: G02B27/01 ,  G02B27/00

Abstract: A method of operating a wearable heads-up display that in use is worn on a head of a subject user includes projecting light to an eye of the subject user and detecting an ambient light condition in an environment of the wearable heads-up display by an ambient light sensor. The method includes measuring a pupil size of the eye of the subject user and determining a target luminous flux based on an output of the ambient light sensor and the pupil size. A current luminous flux of the light projected to the eye of the subject user is adjusted based on the target luminous flux.

公开(公告)号：US10459495B2

公开(公告)日：2019-10-29

申请号：US16226422

申请日：2018-12-19

Applicant: NORTH INC.

Inventor： Jason T. Griffin

IPC: G06F1/16 ,  G06F3/044 ,  G06F3/041 ,  H04W4/20 ,  H05K5/00 ,  H05K7/14 ,  G06F3/0354

Abstract: A wearable electronic device is provided herein. The wearable electronic device includes a body defining an aperture therethrough. The aperture is sized and shaped to receive a finger of a user. The wearable electronic device further includes a computer processor and an input device at least partially extending from an inner surface of the body. The input device is movable between a first position and a second position. Movement of the input device between the first position and second position provides an input to the processor. The electronic wearable device also includes a transmitter coupled to the computer processor and configured to send electronic transmissions to an external electronic device. The electronic transmissions correspond to the input. The electronic wearable device also includes a power source for providing power to the computer processor, the input device and the transmitter.

公开(公告)号：US10459223B2

公开(公告)日：2019-10-29

申请号：US15839075

申请日：2017-12-12

Applicant: NORTH INC.

Inventor： Stefan Alexander ,  Ken Wu ,  Vance R. Morrison

IPC: G02B27/01 ,  G02B27/02 ,  G02B27/09 ,  H04N9/31 ,  G02B26/10

Abstract: Systems, devices, and methods for laser projectors with variable luminance that are well-suited for use in a wearable heads-up display (“WHUD”) are described. Such laser projectors include a laser light source(s) and a scan mirror(s) to generate an image in the field of view of a user, and a liquid crystal element between the light source(s) and the scan mirror(s) to adjust the luminance of the image. The liquid crystal element is on an optical path between the laser light source(s) and the scan mirror and is communicatively coupled to a controller that modulates an opacity of the liquid crystal element. The opacity of the liquid crystal element determines the luminance of the image and may be altered in response to different factors, such as ambient light. Particular applications of the laser projector systems, devices, and methods in a wearable heads-up display are described.

公开(公告)号：US10459220B2

公开(公告)日：2019-10-29

申请号：US15827675

申请日：2017-11-30

Applicant: North Inc.

Inventor： Idris S. Aleem ,  Mayank Bhargava

IPC: G02B27/01 ,  G06F3/01 ,  H04N9/31 ,  H04N13/383 ,  G02B27/00 ,  G02B5/32 ,  G06F3/03 ,  G02B26/10 ,  G02B26/08

Abstract: Systems, devices, and methods that use elements of a scanning laser projector (“SLP”) to determine the gaze direction of a user of a wearable heads-up display (“WHUD”) are described. An infrared laser diode is added to an RGB SLP and an infrared photodetector is aligned to detect reflections of the infrared light from the eye. A scan mirror in the SLP sweeps through a range of orientations and the intensities of reflections of the infrared light are monitored by a processor to determine when a spectral reflection or “glint” is produced. The processor determines the orientation of the scan mirror that produced the glint and maps the scan mirror orientation to a region in the field of view of the eye of the user, such as a region in visible display content projected by the WHUD, to determine the gaze direction of the user.

公开(公告)号：US20190324532A1

公开(公告)日：2019-10-24

申请号：US16376604

申请日：2019-04-05

Applicant: North Inc.

Inventor： Idris S. Aleem ,  Andrew S. Logan ,  Mayank Bhargava

IPC: G06F3/01 ,  G02B27/01 ,  G06K9/00 ,  G06K9/20

Abstract: A method of tracking an eye of a user on a wearable heads-up display (WHUD) worn on the head of the user includes generating infrared light over an eye tracking period, scanning the infrared light over the eye, and detecting reflections of the infrared light from the eye. A motion parameter that is sensitive to motion of the WHUD is measured. Eye tracking is performed in a first mode that is based on glint for values of the motion parameter that fall within a first range of motion parameter values for which an error in measurement of glint position. Eye tracking is performed in a second mode that is based on glint-pupil vector for values of the motion parameter that fall within a second range of motion parameter values for which an error in measurement of glint position exceeds the error threshold. A head-mounted apparatus with eye tracking is disclosed.

公开(公告)号：US20190317598A1

公开(公告)日：2019-10-17

申请号：US16376674

申请日：2019-04-05

Applicant: North Inc.

Inventor： Idris S. Aleem ,  Andrew S. Logan ,  Mayank Bhargava

IPC: G06F3/01 ,  G02B27/01 ,  H04N13/383

Abstract: A method of tracking an eye of a user includes generating infrared light over an eye tracking period, scanning the infrared light over the eye, and detecting reflections of the infrared light from the eye. Shifts in a position of a wearable heads-up display (WHUD) worn on the head of the user are detected during at least a portion of the eye tracking period. Glints are identified from the detected reflections of the infrared light. A drift in a glint center position of an identified glint relative to a glint space is determined based on a detected shift in position of the WHUD corresponding in space to the identified glint. The glint center position is adjusted to compensate for the drift. The adjusted glint center position is transformed from the glint space to a gaze position in a display space in a field of view of the eye.

公开(公告)号：US20190317597A1

公开(公告)日：2019-10-17

申请号：US16376319

申请日：2019-04-05

Applicant: North Inc.

Inventor： Idris S. Aleem ,  Andrew S. Logan ,  Mayank Bhargava

IPC: G06F3/01 ,  G06T7/73 ,  G06K9/00 ,  G06T7/246 ,  G02B27/01

Abstract: A method of tracking an eye of a user includes generating an infrared light, scanning the infrared light over the eye, and detecting reflections of the infrared light from the eye over an eye tracking period. A plurality of glints is identified from the reflections of the infrared light detected. A glint center position of each glint in a glint space is determined and transformed to a gaze position in a display space. At least once during the eye tracking period, an image of the eye is reconstructed from a portion of the reflections of the infrared light detected. A pupil is detected from the image, and a pupil center position is determined. A glint-pupil vector is determined from the pupil center position and the glint center position of at least one glint corresponding in space to the pupil. The glint space is recalibrated based on the glint-pupil vector.

公开(公告)号：US20190313249A1

公开(公告)日：2019-10-10

申请号：US16380204

申请日：2019-04-10

Applicant: North Inc.

Inventor： Jason T. Griffin ,  Steven Henry Fyke

IPC: H04W12/00 ,  H04L29/06 ,  H04W12/04

Abstract: Systems, devices, and methods establish encrypted communications between wearable electronic devices. In response to a physical contact between a first wearable electronic device and a second wearable electronic device respective impact sensors of the first and second wearable electronic devices generate sensor signals. A first identity signal is transmitted from the first wearable device and received at the second wearable device. The second wearable device determines that at least a portion of the first identity signal corresponds to at least a portion of an expected identity signal and, if so, uses the at least a portion of the first identity signal and the at least a portion of the expected identity signal as encryption keys to provide encrypted communications. The first identity signal and/or the expected identity signal may be at least partially based upon or derived from the sensor signal(s) generated by the impact sensor(s).

公开(公告)号：US10440336B2

公开(公告)日：2019-10-08

申请号：US16042186

申请日：2018-07-23

Applicant: North Inc.

Inventor： Christophe Le Gros ,  Nicolas Abele

IPC: H04N9/31 ,  G03B21/20 ,  G03B21/28 ,  G02B27/48 ,  G02B26/08 ,  G02B27/14 ,  G02B26/10

Abstract: According to the present invention there is provided a method of reducing speckle in a primary light spot which is projected onto a surface by a projection device which comprises a laser, wherein a primary light spot is defined by two or more secondary light spots, the method comprising the steps of (a) consecutively providing the laser with “n” different input currents so that the laser consecutively outputs “n” different light beams, wherein each one of the “n” different light beams defines a secondary light spot on the surface, wherein “n” is an integer value greater than one; and (b) superposing the secondary light spots. There is further provided a corresponding method of projecting a pixel.