公开(公告)号：US10444865B2

公开(公告)日：2019-10-15

申请号：US15964499

申请日：2018-04-27

Applicant: GOOGLE LLC

Inventor： Ghulam Kirmani ,  Andrea Colaco ,  Luis Villaran ,  Chintan Trehan

IPC: G06F3/0346 ,  H03K19/177 ,  G02B27/01 ,  G06F3/01 ,  G06F3/03

Abstract: Techniques of tracking a hand controller in a VR system involves detecting, by photodiodes in the hand controller, patterns of diffuse radiation generated by diffuse LEDs in the HMD. Such techniques can also include comparing the detected patterns to those simulated offline previously and represented in a lookup table (LUT). By looking up the detected patterns in the LUT, the VR system may determine the position and/or orientation of the hand controller with sub-millimeter accuracy. Some advantages of the improved techniques can be in the simplicity and/or low cost of the components without sacrificing accuracy in deriving the position and orientation of the hand controller.

公开(公告)号：US10794606B2

公开(公告)日：2020-10-06

申请号：US15806985

申请日：2017-11-08

Applicant: Google LLC

Inventor： Laura Rabb ,  Andrea Colaco ,  Ghulam A. Kirmani ,  Aveek Ravishekhar Purohit ,  Luis Villaran ,  Kenneth Louis Herman ,  Bryan James ,  Casey Mills Davis ,  Yash Modi

IPC: F24F11/30 ,  G08B13/187 ,  F24F11/62 ,  G01S17/04 ,  G01S17/89 ,  G05B15/02 ,  G08B21/18 ,  G08B13/08 ,  G08B13/183 ,  F24F11/46

Abstract: Systems and methods of using active infrared (AIR) sensors to map a room of a home or building and determine whether an external portal (e.g., window and/or door) of the room is open or closed are provided. In particular, the systems and methods include outputting infrared (IR) light from an IR light source of an active infrared (AIR) sensor, receiving reflected IR light with a light sensor, and determining, with a processor coupled to the light sensor, whether a window of a room is open according to the received reflected IR light.

公开(公告)号：US20180066861A1

公开(公告)日：2018-03-08

申请号：US15806985

申请日：2017-11-08

Applicant: Google LLC

Inventor： Laura Rabb ,  Andrea Colaco ,  Ghulam A. Kirmani ,  Aveek Ravishekhar Purohit ,  Luis Villaran ,  Kenneth Louis Herman ,  Bryan James ,  Casey Mills Davis ,  Yash Modi

IPC: F24F11/00 ,  G01S17/02 ,  G01S17/89 ,  G08B21/18 ,  G08B13/187 ,  G05B15/02 ,  G08B13/183 ,  G08B13/08

Abstract: Systems and methods of using active infrared (AIR) sensors to map a room of a home or building and determine whether an external portal (e.g., window and/or door) of the room is open or closed are provided. In particular, the systems and methods include outputting infrared (IR) light from an IR light source of an active infrared (AIR) sensor, receiving reflected IR light with a light sensor, and determining, with a processor coupled to the light sensor, whether a window of a room is open according to the received reflected IR light.

公开(公告)号：US20180314346A1

公开(公告)日：2018-11-01

申请号：US15964499

申请日：2018-04-27

Applicant: GOOGLE LLC

Inventor： Ghulam Kirmani ,  Andrea Colaco ,  Luis Villaran ,  Chintan Trehan

IPC: G06F3/0346 ,  G06F3/01 ,  G02B27/01 ,  H03K19/177

CPC classification number: G06F3/0346 ,  G02B27/017 ,  G02B27/0172 ,  G02B2027/014 ,  G02B2027/0187 ,  G06F3/011 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/0325 ,  G08C2201/32 ,  H03K19/17728

Abstract: Techniques of tracking a hand controller in a VR system involves detecting, by photodiodes in the hand controller, patterns of diffuse radiation generated by diffuse LEDs in the HMD. Such techniques can also include comparing the detected patterns to those simulated offline previously and represented in a lookup table (LUT). By looking up the detected patterns in the LUT, the VR system may determine the position and/or orientation of the hand controller with sub-millimeter accuracy. Some advantages of the improved techniques can be in the simplicity and/or low cost of the components without sacrificing accuracy in deriving the position and orientation of the hand controller.