Velodyne Lidar Usa, Inc.

Velodyne Lidar, Inc.

Megachips Technology America Corporation

Rajanatha Shettigara

David S Hall

Anand Gopalan

Aaron Chen

Nathan Slattengren

Rahul Kumar Agarwal

Alan Osamu Kobayashi

Ramakrishna Chilukuri

Sujan Valiyaka Thomas

Nobuhiro Yanagisawa

Ryuichi Moriizumi

Satoru Kumashiro

A light detection and ranging (LIDAR) system may include a transceiver disposed on a first substrate and comprising a plurality of receiver detectors; and a shared clock source disposed remotely from the transceiver on a second substrate and comprising a shared clock that is structured and arranged to control and synchronize operation of the plurality of receiver detectors to determine time-of-flight or reflectance.

LiDAR system having a shared clock source, and methods of controlling signal processing components using the same

Methods and systems for combining return signals from multiple channels of a LIDAR measurement system are described herein. In one aspect, the outputs of multiple receive channels are electrically coupled before input to a single channel of an analog to digital converter. In another aspect, a DC offset voltage is provided at the output of each transimpedance amplifier of each receive channel to improve measured signal quality. In another aspect, a bias voltage supplied to each photodetector of each receive channel is adjusted based on measured temperature to save power and improve measurement consistency. In another aspect, a bias voltage supplied to each illumination source of each transmit channel is adjusted based on measured temperature. In another aspect, a multiplexer is employed to multiplex multiple sets of output signals of corresponding sets of receive channels before analog to digital conversion.

LIDAR signal acquisition

A data transmission method includes, detecting an incoming link training sequence that is transmitted from an upstream transmitter, generating a marker indicating a timing location of a word included in the incoming link training sequence, generating a self link training sequence based on a local reference clock, adjusting a time difference in the incoming link training sequence and the self link training sequence, and retransmitting an incoming bit stream based on the self link training sequence being matched to the incoming link training sequence.

Data transmission system

Growing community of inventors

San Jose, CA, United States of America

Rajanatha Shettigara