公开(公告)号：US20240264626A1

公开(公告)日：2024-08-08

申请号：US18166092

申请日：2023-02-08

Applicant: GM Global Technology Operations LLC

Inventor： Sudhakaran Maydiga ,  Steve DiBella ,  Subhash Vijaya Doddachikkaveeranna

IPC: G06F1/12 ,  G06F1/14

CPC classification number: G06F1/12 ,  G06F1/14

Abstract: A system for synchronization of multiple clocks in a vehicle network includes a processor that is programmed to synchronize a time follower clock to a primary grand leader clock. The primary grand leader clock is monitored and the time follower clock is synchronized to a standby grand leader clock upon a failure of the primary grand leader clock. The time follower clock is synchronized to the primary grand leader clock if a new ignition cycle has occurred between a failure of the primary grand leader clock and a recovery after failure of the primary grand leader clock. The time follower clock continues to be synchronized to the standby grand leader clock if a new ignition cycle has not occurred between the failure of the primary grand leader clock and the recovery after failure of the primary grand leader clock.

公开(公告)号：US20240267253A1

公开(公告)日：2024-08-08

申请号：US18166085

申请日：2023-02-08

Applicant: GM Global Technology Operations LLC

Inventor： Sudhakaran Maydiga ,  Steve DiBella ,  John Patrick Saavedra Gonzaga ,  Subhash Vijaya Doddachikkaveeranna

IPC: H04L12/40

CPC classification number: H04L12/40 ,  H04L2012/40215 ,  H04L2012/40273

Abstract: A vehicle control system includes a transmitting electronic control unit for transmitting multiplexed protocol data units. The transmitting electronic control unit is enabled to transmit first and second protocol data units with corresponding first and second selector field values. A receiving electronic control unit is in electronic communication with the transmitting electronic control unit. The receiving electronic control unit is enabled to be programmed to operate in a first mode of operation or in a second mode of operation. The receiving electronic control unit is enabled to receive and process the first protocol data unit based on receipt of the first selector field value when operating in the first mode of operation and is enabled to receive and process the second protocol data unit based on receipt of the second selector field value when operating in the second mode of operation.

公开(公告)号：US12177037B2

公开(公告)日：2024-12-24

申请号：US18166085

申请日：2023-02-08

Applicant: GM Global Technology Operations LLC

Inventor： Sudhakaran Maydiga ,  Steve DiBella ,  John Patrick Saavedra Gonzaga ,  Subhash Vijaya Doddachikkaveeranna

IPC: H04L12/40

Abstract: A vehicle control system includes a transmitting electronic control unit for transmitting multiplexed protocol data units. The transmitting electronic control unit is enabled to transmit first and second protocol data units with corresponding first and second selector field values. A receiving electronic control unit is in electronic communication with the transmitting electronic control unit. The receiving electronic control unit is enabled to be programmed to operate in a first mode of operation or in a second mode of operation. The receiving electronic control unit is enabled to receive and process the first protocol data unit based on receipt of the first selector field value when operating in the first mode of operation and is enabled to receive and process the second protocol data unit based on receipt of the second selector field value when operating in the second mode of operation.

公开(公告)号：US12038783B1

公开(公告)日：2024-07-16

申请号：US18166092

申请日：2023-02-08

Applicant: GM Global Technology Operations LLC

Inventor： Sudhakaran Maydiga ,  Steve DiBella ,  Subhash Vijaya Doddachikkaveeranna

IPC: G06F1/14 ,  G06F1/12

CPC classification number: G06F1/12 ,  G06F1/14

Abstract: A system for synchronization of multiple clocks in a vehicle network includes a processor that is programmed to synchronize a time follower clock to a primary grand leader clock. The primary grand leader clock is monitored and the time follower clock is synchronized to a standby grand leader clock upon a failure of the primary grand leader clock. The time follower clock is synchronized to the primary grand leader clock if a new ignition cycle has occurred between a failure of the primary grand leader clock and a recovery after failure of the primary grand leader clock. The time follower clock continues to be synchronized to the standby grand leader clock if a new ignition cycle has not occurred between the failure of the primary grand leader clock and the recovery after failure of the primary grand leader clock.