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1. WO2022026011 - TIME OF FLIGHT IMAGING USING LONG AND SHORT-EXPOSURE STORAGE NODES

Publication Number WO/2022/026011
Publication Date 03.02.2022
International Application No. PCT/US2021/030030
International Filing Date 30.04.2021
IPC
G01S 7/4914 2020.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
491Details of non-pulse systems
4912Receivers
4913Circuits for detection, sampling, integration or read-out
4914Detector arrays, e.g. charge-transfer gates
G01S 17/894 2020.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems, specially adapted for specific applications
89for mapping or imaging
8943D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
CPC
G01S 17/36
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
08for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
36with phase comparison between the received signal and the contemporaneously transmitted signal
G01S 17/894
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems specially adapted for specific applications
89for mapping or imaging
8943D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
G01S 7/4914
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
491Details of non-pulse systems
4912Receivers
4913Circuits for detection, sampling, integration or read-out
4914of detector arrays, e.g. charge-transfer gates
G01S 7/4915
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
491Details of non-pulse systems
4912Receivers
4915Time delay measurement, e.g. operational details for pixel components
H01L 27/14612
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
14including semiconductor components sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
144Devices controlled by radiation
146Imager structures
14601Structural or functional details thereof
14609Pixel-elements with integrated switching, control, storage or amplification elements
14612involving a transistor
H01L 27/14625
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
14including semiconductor components sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
144Devices controlled by radiation
146Imager structures
14601Structural or functional details thereof
14625Optical elements or arrangements associated with the device
Applicants
  • MICROSOFT TECHNOLOGY LICENSING, LLC [US]/[US]
Inventors
  • OH, Minseok
Agents
  • SWAIN, Cassandra T.
  • BARKER, Doug
  • CHATTERJEE, Aaron C.
  • CHEN, Wei-Chen Nicholas
  • CHOI, Daniel
  • CHURNA, Timothy
  • DINH, Phong
  • EVANS, Patrick
  • GABRYJELSKI, Henry
  • GUPTA, Anand
  • HWANG, William C.
  • JARDINE, John S.
  • LEE, Sunah
  • LEMMON, Marcus
  • MARQUIS, Thomas
  • MEYERS, Jessica
  • ROPER, Brandon
  • SPELLMAN, Steven
  • SULLIVAN, Kevin
  • WALKER, Matt
  • WIGHT, Stephen A.
  • WISDOM, Gregg
  • WONG, Ellen
  • WONG, Thomas S.
  • ZHANG, Hannah
  • AKHTER, Julia
  • KADOURA, Judy M.
  • NIU, Bo
  • OLANIRAN, Qudus
  • BROWN, Renee
  • TRAN, Kimberly
Priority Data
16/943,97830.07.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) TIME OF FLIGHT IMAGING USING LONG AND SHORT-EXPOSURE STORAGE NODES
(FR) IMAGERIE DE TEMPS DE VOL À L'AIDE DE NŒUDS DE STOCKAGE À EXPOSITION LONGUE ET COURTE
Abstract
(EN) Examples are disclosed that relate to time of flight imaging using long-exposure and short-exposure storage nodes for each pixel tap of a pixel in an image sensor. One example provides a time-of-flight camera, comprising an image sensor comprising a plurality of pixels, each pixel of the plurality of pixels comprising one or more taps, each tap comprising a photogate, a short-exposure storage node configured to receive charge during a short-exposure interval of an integration period, a long-exposure storage node configured to receive charge during a long-exposure interval of the integration period, a short-exposure switch gate configured to direct charge generated during the short-exposure interval to the short-exposure storage node, a long-exposure switch gate configured to direct charge generated during the long-exposure period to the long-exposure storage node, and a readout mechanism comprising one or more floating diffusion capacitors.
(FR) Des exemples sont divulgués, concernant une imagerie de temps de vol à l'aide de nœuds de stockage à exposition longue et à exposition courte pour chaque prise de pixel d'un pixel dans un capteur d'image. Un exemple concerne une caméra temps de vol, comprenant un capteur d'image comprenant une pluralité de pixels, chaque pixel de la pluralité de pixels comprenant une ou plusieurs prises, chaque prise comprenant une inspection finale de début de ligne, un nœud de stockage à exposition courte conçu pour recevoir une charge pendant un intervalle d'exposition courte d'une période d'intégration, un nœud de stockage à exposition longue conçu pour recevoir une charge pendant un intervalle d'exposition longue de la période d'intégration, une grille de commutation à exposition courte conçue pour diriger une charge générée pendant l'intervalle d'exposition courte vers le nœud de stockage à exposition courte, une grille de commutation à exposition longue conçue pour diriger une charge générée pendant la période d'exposition longue vers le nœud de stockage à exposition longue, et un mécanisme de lecture comprenant un ou plusieurs condensateurs à diffusion flottante.
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