Waymo llc (20250068209). Timebase Synchronization Using Pulsed Signal Injection
Contents
Timebase Synchronization Using Pulsed Signal Injection
Organization Name
Inventor(s)
David Sobel of Los Altos CA (US)
Pieter Kaspenberg of Santa Clara CA (US)
Pierre-Yves Droz of Los Altos CA (US)
Srikanth Muroor of Mountain View CA (US)
Timebase Synchronization Using Pulsed Signal Injection
This abstract first appeared for US patent application 20250068209 titled 'Timebase Synchronization Using Pulsed Signal Injection
Original Abstract Submitted
a method and system to provide timebase synchronization for multiple processors in a multi-processor sensor system, where each processor operates according to a respective reference clock, and where the processors' respective reference clocks are off sync from each other. an example method includes simultaneously injecting a synchronization pulse respectively into the multiple processors. further, the method includes recording for each processor, according to the processor's respective reference clock, a respective synchronization-pulse timestamp of the simultaneously injected synchronization pulse, comparing the respective synchronization-pulse timestamps recorded for the processors, and, based on the comparing, computing for each processor a respective time offset. additionally, the method includes using the per-processor computed time offsets as a basis to provide a synchronized timebase across the processors.
