中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

18 records (took 0.012 seconds)

    Low-Speed Ring with Controlled Jitter
    1.
    发明公开
    Low-Speed Ring with Controlled Jitter 审中-公开

    公开(公告)号：US20240205054A1

    公开(公告)日：2024-06-20

    申请号：US18068099

    申请日：2022-12-19

    Applicant: Waymo LLC

    Inventor： Kaushik Kannan ,  Pieter Kapsenberg ,  Pierre-Yves Droz

    IPC: H04L25/02

    CPC classification number: H04L25/0292 ,  H04L25/0272

    Abstract: Example embodiments relate to communication links, computing systems, and methods for their use. An example embodiment includes a communication link. The communication link includes a low-voltage differential signaling (LVDS) driver. The LVDS driver is configured to provide a differential signal that is based on a digital bit stream. The digital bit stream includes a series of digital bits that are temporally arranged based on a nominal bit period. The communication link also includes a controllable delay device. The controllable delay device is configured to provide a delay signal to the LVDS driver so as to cause a rising edge or a falling edge of respective digital bits to vary in time with respect to the nominal bit period based on a predetermined sequence of delay amounts. The delay amounts represent positive and negative differences in time from the nominal bit period.

    Two-Step Return Calibration for Lidar Cross-Talk Mitigation
    2.
    发明公开
    Two-Step Return Calibration for Lidar Cross-Talk Mitigation 审中-公开

    公开(公告)号：US20230194676A1

    公开(公告)日：2023-06-22

    申请号：US17644994

    申请日：2021-12-17

    Applicant: Waymo LLC

    Inventor： Pieter Kapsenberg ,  Georges Goetz

    IPC: G01S7/4861 ,  G01S17/931 ,  G01S7/4865

    CPC classification number: G01S7/4861 ,  G01S17/931 ,  G01S7/4865

    Abstract: An optical receiver includes a plurality of photodetectors, a shared memory, and a pulse calibration processing unit communicatively coupled to the shared memory. The optical receiver also includes a hardware accelerator module configured to accept input waveforms from the plurality of photodetectors and compare an amplitude of the respective input waveforms with a predetermined threshold. Based on the comparison, the hardware accelerator module could determine subsets of the input waveforms and determine information indicative of characteristic aspects of the subsets of the input waveforms. The optical receiver is additionally operable to store the determined information in the shared memory and trigger an interrupt for the pulse calibration processing unit to initiate a pulse calibration process on the determined information.

    Low-Speed Ring with Controlled Jitter
    3.
    发明申请
    Low-Speed Ring with Controlled Jitter 有权

    公开(公告)号：US20250150311A1

    公开(公告)日：2025-05-08

    申请号：US19018742

    申请日：2025-01-13

    Applicant: Waymo LLC

    Inventor： Kaushik Kannan ,  Pieter Kapsenberg ,  Pierre-Yves Droz

    IPC: H04L25/02

    Abstract: Example embodiments relate to communication links, computing systems, and methods for their use. An example embodiment includes a communication link. The communication link includes a low-voltage differential signaling (LVDS) driver. The LVDS driver is configured to provide a differential signal that is based on a digital bit stream. The digital bit stream includes a series of digital bits that are temporally arranged based on a nominal bit period. The communication link also includes a controllable delay device. The controllable delay device is configured to provide a delay signal to the LVDS driver so as to cause a rising edge or a falling edge of respective digital bits to vary in time with respect to the nominal bit period based on a predetermined sequence of delay amounts. The delay amounts represent positive and negative differences in time from the nominal bit period.

    Systems, apparatus, and methods for transmitting image data
    5.
    发明授权
    Systems, apparatus, and methods for transmitting image data 有权

    公开(公告)号：US11470282B2

    公开(公告)日：2022-10-11

    申请号：US17116448

    申请日：2020-12-09

    Applicant: Waymo LLC

    Inventor： Pieter Kapsenberg

    IPC: H04N19/423 ,  G06F13/40 ,  G06F5/06 ,  H04N7/18 ,  H04N1/21 ,  H04N1/00

    Abstract: Examples described relate to systems, methods, and apparatus for transmitting image data. The apparatus may comprise a memory buffer configured to store data elements of an image frame and generate a signal indicating that each of the data elements of the image frame have been written to the memory buffer, a processor configured to initiate a flush operation for reading out at least one data element of the image frame from the memory buffer and to output the at least one data element at a first rate, a rate adjustment unit configured to receive the at least one data element from the processor at the first rate and to output the at least one data element at a second rate, and a multiplexer configured to receive the at least one data element from the processor at the first rate and configured to receive the at least one data element from the rate adjustment unit at the second rate. The multiplexer may select the at least one data element at the second rate for transmitting on a bus in response to receiving the signal from the memory buffer.

    Systems, apparatus, and methods for transmitting image data
    7.
    发明授权
    Systems, apparatus, and methods for transmitting image data 有权

    公开(公告)号：US12063457B2

    公开(公告)日：2024-08-13

    申请号：US17956218

    申请日：2022-09-29

    Applicant: Waymo LLC

    Inventor： Pieter Kapsenberg

    IPC: H04N7/18 ,  H04N1/00 ,  H04N1/21 ,  H04N1/32 ,  H04N101/00

    CPC classification number: H04N7/183 ,  H04N1/00095 ,  H04N1/2112 ,  H04N1/2141 ,  H04N1/32368 ,  H04N2101/00 ,  H04N2201/3295

    Abstract: Examples described relate to systems, methods, and apparatus for transmitting image data. The apparatus may comprise a memory buffer configured to store data elements of an image frame and generate a signal indicating that each of the data elements of the image frame have been written to the memory buffer, a processor configured to initiate a flush operation for reading out at least one data element of the image frame from the memory buffer and to output the at least one data element at a first rate, a rate adjustment unit configured to receive the at least one data element from the processor at the first rate and to output the at least one data element at a second rate, and a multiplexer configured to receive the at least one data element from the processor at the first rate and configured to receive the at least one data element from the rate adjustment unit at the second rate. The multiplexer may select the at least one data element at the second rate for transmitting on a bus in response to receiving the signal from the memory buffer.

    Multi-Chip Daisychain for Output Aggregation
    9.
    发明公开
    Multi-Chip Daisychain for Output Aggregation 审中-公开

    公开(公告)号：US20230194677A1

    公开(公告)日：2023-06-22

    申请号：US17644664

    申请日：2021-12-16

    Applicant: Waymo LLC

    Inventor： Pieter Kapsenberg ,  Pierre-Yves Droz ,  Sabareeshkumar Ravikumar

    IPC: G01S7/4863 ,  G06F13/36

    CPC classification number: G01S7/4863 ,  G06F13/36 ,  B60W60/001

    Abstract: An optical receiver may include a plurality of photodetectors, a common processed data pipeline, and a plurality of processors. Outputs of the plurality of processors are communicatively coupled to the common processed data pipeline. Each processor is configured to accept input signals from a respective photodetector of the plurality of photodetectors. Each processor is also configured to process the input signals to provide processed data and output the processed data into a data stream of the common processed data pipeline according to one or more predetermined data locations. A method for using the optical receiver and a non-transitory computer readable medium are also described.

    Lower Power Linearization of Lidar Signals
    10.
    发明公开
    Lower Power Linearization of Lidar Signals 审中-公开

    公开(公告)号：US20230184910A1

    公开(公告)日：2023-06-15

    申请号：US17644366

    申请日：2021-12-15

    Applicant: Waymo LLC

    Inventor： Sabareeshkumar Ravikumar ,  Pieter Kapsenberg ,  Srikanth Muroor ,  David Sobel ,  Michael Dierickx

    IPC: G01S7/497 ,  G01S17/931 ,  B60W60/00

    CPC classification number: G01S7/497 ,  G01S17/931 ,  B60W60/001 ,  B60W2420/52

    Abstract: Example embodiments relate to a lower power linearization of lidar signals. An example embodiment includes a method that includes receiving a sample value output by an analog-to-digital converter (ADC) in a processing unit of a lidar system. The ADC may be configured to digitize an optical signal that is compressed by a gain amplifier. The compression may be based on a transfer function comprising one or more linear portions. The method also includes comparing the sample value to one or more threshold values. The one or more threshold values may correspond respectively to the one or more linear portions. The method further includes selecting, for the sample value and based on the comparing, an inverse gain and an associated intercept. The method additionally includes linearizing the sample value based on the selected inverse gain and the associated intercept.

Patent Agency Ranking