公开(公告)号：US20190213348A1

公开(公告)日：2019-07-11

申请号：US16356344

申请日：2019-03-18

Applicant: STMicroelectronics, Inc. ,  STMicroelectroincs (Research & Development) Limited

Inventor： Xiaoyong Yang ,  Rui Xiao ,  Duncan Hall

IPC: G06F21/62 ,  G01S17/88 ,  G06K9/00 ,  G01S7/486 ,  G01S7/484 ,  G06F21/32 ,  G01S17/10

CPC classification number: G06F21/6218 ,  G01S7/484 ,  G01S7/4861 ,  G01S7/4863 ,  G01S7/4865 ,  G01S7/497 ,  G01S17/10 ,  G01S17/88 ,  G06F21/32 ,  G06K9/00201 ,  G06K9/00255 ,  G06K9/00268 ,  G06K9/00597

Abstract: An electronic device includes a time-of-flight sensor configured to sense a distance between the electronic device and at least one object proximate the electronic device. Processing circuitry is coupled to the time-of-flight sensor and controls access to the electronic device based on the sensed distance. The electronic device may include a digital camera that the processing circuitry controls to perform facial or iris recognition utilizing the sensed distance from the time-of-flight sensor.

公开(公告)号：US20170363721A1

公开(公告)日：2017-12-21

申请号：US15624346

申请日：2017-06-15

Applicant: STMicroelectronics, Inc.

Inventor： Xiaoyong Yang ,  Rui Xiao

IPC: G01S7/48 ,  G01S7/481 ,  G01S17/87 ,  G01S17/89

CPC classification number: G01S7/4816 ,  G01S7/4802 ,  G01S7/4863 ,  G01S17/10 ,  G01S17/89 ,  G07C9/00 ,  G07C9/00071

Abstract: A user identification based control system includes a time of flight ranging sensor configured to sense a distance to a person, where the time of flight ranging sensor is positioned so the sensed distance is a function of a height of the person. Processing circuitry is coupled to the time of flight ranging sensor and configured to identify the person based upon sensed distance and to generate control signals to control peripheral components based upon the identity of the person. The time of flight ranging sensor may also be used to sense speed of the person for identification purposes. In general, the time of flight ranging sensor is positioned a known height over a surface on which the person is present, such as in the doorway or on a ceiling of a room.

公开(公告)号：US11373322B2

公开(公告)日：2022-06-28

申请号：US16727792

申请日：2019-12-26

Applicant: STMicroelectronics, Inc.

Inventor： Xiaoyong Yang ,  Chang Myung Ryu ,  James Kath ,  Rui Xiao

IPC: G06T7/521

Abstract: The present disclosure provides a device and method for depth sensing by utilizing the combination of a ranging sensor and an image sensor. The ranging sensor can accurately detect distance measurement from an object. The image sensor can take images with high resolution of the object. By combining each sensor data from the ranging sensor and the image sensor, accurate depth information with high resolution of the object may be obtained. A structured light having patterned shapes are used in conjunction with the ranging sensor to receive reflected patterned shapes of the object. These reflected patterned shapes are used to analyze distance measurements associated with the specific patterned shapes. These distance measurements from both the ranging sensor and the image sensor is aligned and combined to generate an accurate depth map with high resolution using a processor of an electronic device including the ranging sensor and the image sensor.

公开(公告)号：US10823826B2

公开(公告)日：2020-11-03

申请号：US15605611

申请日：2017-05-25

Applicant: STMICROELECTRONICS, INC.

Inventor： Xiaoyong Yang ,  Rui Xiao ,  Arnaud Deleule

IPC: G01C3/08 ,  G01S7/484 ,  G01S17/10 ,  G01S7/486

Abstract: A time of flight range detection device includes a laser configured to transmit an optical pulse into an image scene, a return single-photon avalanche diode (SPAD) array, a reference SPAD array, a range detection circuit coupled to the return SPAD array and the reference SPAD array, and a laser driver circuit. The range detection circuit in operation determines a distance to an object based on signals from the return SPAD array and the reference SPAD array. The laser driver circuit in operation varies an output power level of the laser in response to the determined distance to the object.

公开(公告)号：US10705191B2

公开(公告)日：2020-07-07

申请号：US15721413

申请日：2017-09-29

Applicant: STMICROELECTRONICS, INC.

Inventor： Chang Myung Ryu ,  Frederic Morestin ,  Xiaoyong Yang

IPC: G01S7/4865 ,  G01S17/42 ,  G01S17/87 ,  G01S17/89 ,  G01S17/04 ,  H01L31/02 ,  H01L31/107

Abstract: A method and apparatus for determining space occupancy and performing volumetric measurement of a transportation system using a time-of-flight (TOF) sensor array are provided. In the method and apparatus, the TOF sensor array, which is mounted in a transportation system and includes a plurality of TOF sensors, outputs a plurality of distance measurements made by the plurality of TOF sensors, respectively. In the method and apparatus, a map of one or more objects positioned in the transportation system is generated based on the plurality of distance measurements. The map is output for display to a user by a display.

公开(公告)号：US10034111B1

公开(公告)日：2018-07-24

申请号：US15593103

申请日：2017-05-11

Applicant: STMicroelectronics, Inc.

Inventor： Dominique Paul Barbier ,  Xiaoyong Yang

IPC: H04R29/00 ,  H03G3/30 ,  H04R3/00 ,  G01S17/08

Abstract: The present disclosure is directed to a gain control system that receives a signal and outputs a modulated signal. The signal modulation is based on a gain that is based on a detected distance between the gain control system and a user. The distance is detected with a ranging sensor which generates ranging data for a field of view, and then the gain control system analyzes the ranging data to identify the user, with a higher signal gain for the user at a greater distance and a lower signal gain for the user at a lesser distance.

公开(公告)号：US20170353649A1

公开(公告)日：2017-12-07

申请号：US15616641

申请日：2017-06-07

Applicant: STMicroelectronics, Inc. ,  STMircroelectronics (Research & Development) Limited

Inventor： Xiaoyong Yang ,  John Kevin Moore

IPC: H04N5/235 ,  G01S17/10 ,  G01S17/02 ,  H04N5/225 ,  G01S7/486

CPC classification number: H04N5/2354 ,  G01S7/4815 ,  G01S7/4816 ,  G01S7/484 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/023 ,  G01S17/10 ,  H04N5/2256

Abstract: A flash control circuit of an image capture device includes a time-of-flight ranging sensor configured to sense distances to a plurality of objects within an overall field of view of the time-of-flight ranging sensor. The time-of-flight sensor is configured to generate a range estimation signal including a plurality of sensed distances to the plurality of objects. Flash control circuitry is coupled to the time-of-flight ranging sensor to receive the range estimation signal and is configured to generate a flash control signal to control a power of flash illumination light based upon the plurality of sensed distances. The time-of-flight sensor may also generate a signal amplitude for each of the plurality of sensed objects, with the flash control circuitry generating the flash control signal to the control the power of the flash illumination based on the plurality of sensed distances and signal amplitudes.

公开(公告)号：US11030289B2

公开(公告)日：2021-06-08

申请号：US16050628

申请日：2018-07-31

Applicant: STMicroelectronics, Inc.

Inventor： Xiaoyong Yang ,  Sankalp Dayal

IPC: G06F21/32 ,  G01C3/08 ,  G01C19/58 ,  G10L17/00 ,  G01P15/16 ,  G06F21/31

Abstract: A method includes sensing through time-of-flight measurements a distance of an object from an electronic device, sensing motion of the electronic device, sensing acoustic signals received by the electronic device, and detecting the presence of a human proximate the electronic device based on the sensed distance, motion and acoustic signals. Access to the electronic device is controlled based on whether a human is detected as being present.

公开(公告)号：US10521921B2

公开(公告)日：2019-12-31

申请号：US15476100

申请日：2017-03-31

Applicant: STMicroelectronics (Research & Development) Limited ,  STMicroelectronics, Inc.

Inventor： Xiaoyong Yang ,  Neale Dutton

IPC: G01S17/89 ,  G06T7/55 ,  G06T7/73 ,  G06T7/521 ,  H04N5/235 ,  G01S17/02 ,  G01S7/48 ,  G01S7/497 ,  G06K9/00 ,  G07C9/00

Abstract: An apparatus includes time of flight single-photon avalanche diode (ToF SPAD) circuitry. The ToF SPAD circuitry generates indications of distance between the apparatus and an object within a field of view. A processor receives the indications of distance and controls at least one image sensor, such as a camera, to capture at least one image based on at least one indication of distance. The processor determines whether an image is a true representation of an expected object by comparing multiple indications of distance associated with the object to an expected object distance profile and comparing the image to at least one expected object image.

公开(公告)号：US20180356525A1

公开(公告)日：2018-12-13

申请号：US15617875

申请日：2017-06-08

Applicant: STMicroelectronics, Inc.

Inventor： Dominique Paul Barbier ,  Xiaoyong Yang

IPC: G01S17/89 ,  G01S17/10 ,  G01S7/481

CPC classification number: G01S17/89 ,  G01S7/4817 ,  G01S17/10

Abstract: The present disclosure is directed to a method and system for scanning an object or environment with a ranging sensor. The method involves rotating a ranging sensor around a rotation reference point and associating the distances measured with the ranging sensor with rotation measurements from a rotation sensor fixed to the ranging sensor. The associated data is used to populate a data plot or data table to be used to generate three-dimensional models.