公开(公告)号：US10320528B2

公开(公告)日：2019-06-11

申请号：US15493594

申请日：2017-04-21

Applicant: Silicon Laboratories Inc.

Inventor： James D. Austin

IPC: G06F11/00 ,  H04L1/14 ,  H04L5/14

Abstract: A fault tolerant communication protocol transmits information across a communication channel from a transmitting device to a receiving device. The receiving device echoes back a copy of the transmitted information to the transmitting device. The transmitting device sends a first valid signal across the communication channel if the echoed information matches the transmitted information. The receiving device sends a second valid signal across the communication channel responsive to the first valid signal. The transmitting device stops sending of the first valid signal responsive to the second valid signal and the receiving device stops sending the second valid signal responsive to determining the first device has stopped sending the first valid signal. The receiving device can then update its state based on a successful transfer.

公开(公告)号：US20180309542A1

公开(公告)日：2018-10-25

申请号：US15493594

申请日：2017-04-21

Applicant: Silicon Laboratories Inc.

Inventor： James D. Austin

IPC: H04L1/14 ,  H04L5/14 ,  G06F11/07

CPC classification number: H04L1/14 ,  G06F11/0709 ,  G06F11/079 ,  H04L5/14

Abstract: A fault tolerant communication protocol transmits information across a communication channel from a transmitting device to a receiving device. The receiving device echoes back a copy of the transmitted information to the transmitting device. The transmitting device sends a first valid signal across the communication channel if the echoed information matches the transmitted information. The receiving device sends a second valid signal across the communication channel responsive to the first valid signal. The transmitting device stops sending of the first valid signal responsive to the second valid signal and the receiving device stops sending the second valid signal responsive to determining the first device has stopped sending the first valid signal. The receiving device can then update its state based on a successful transfer.

公开(公告)号：US20210318368A1

公开(公告)日：2021-10-14

申请号：US16846731

申请日：2020-04-13

Applicant: Silicon Laboratories Inc.

Inventor： Sean A. Lofthouse ,  James D. Austin

IPC: G01R27/08 ,  H04L12/10

Abstract: A calibration operation determines a resistance of a sense resistor in a POE system. A voltage measurement is taken with a first current flowing through the sense resistor. A second voltage measurement is taken with a second current flowing through the resistor. A resistance value of the sense resistor is determined based on a voltage difference between the first and second voltage measurements and a current difference between the first current and the second currents.