Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: A network diagnosis method and apparatus are disclosed. An operation method of a first communication node includes checking whether each of communication nodes connected to the first communication node are in a fault state based on a first message transmitted between the communication nodes and a first response message, which is a response to the first message and generating a diagnosis response message including identification information of the communication node that is in a fault state or normal state. Accordingly, network performance may be enhanced.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: An operation method of a first communication node in an Ethernet-based vehicle network includes: generating a data message including data when there is data to be transmitted to a second communication node belonging to the Ethernet-based vehicle network; and transmitting the data message to the second communication node. The data message further includes a first indicator indicating a type of the data and a second indicator indicating an encoding scheme applied to the data, such that a vehicle network even in an existing vehicle can support transmission and reception of information for the new IT service, and the performance of the vehicle network can be improved.

Abstract: An operation method of a first communication node supporting communications between an Ethernet-based network and a controller area network (CAN) includes: receiving an Ethernet message from a second communication node belonging to the Ethernet-based network; performing an integrity verification on first automotive safety integrity level (ASIL) authentication information included in the Ethernet message; generating a CAN message based on the Ethernet message for which the integrity verification has been completed; and transmitting the CAN message to a third communication node belonging to the CAN.

Abstract: Disclosed are link status diagnostic methods for a vehicle network. A link status diagnostic method performed in a communication node includes: identifying a type of a fault occurring in a link connected to the communication node; generating a signal including a link fault type indicator indicating the type of the fault; and transmitting the signal. Also, the signal is generated and transmitted according to an auto negotiation protocol. Therefore, stability and reliability of the vehicle network can be enhanced, thereby improving overall performance of the vehicle network.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: A network diagnosis method and apparatus are disclosed. An operation method of a first communication node includes checking whether each of communication nodes connected to the first communication node are in a fault state based on a first message transmitted between the communication nodes and a first response message, which is a response to the first message and generating a diagnosis response message including identification information of the communication node that is in a fault state or normal state. Accordingly, network performance may be enhanced.

Abstract: Provided is an electrical load driving device including an SMPS (switching mode power supply). The electrical load driving device comprises: a rectifying unit configured to rectify a current on an output path of the SMPS; a current limiting unit configured to limit the current output from the rectifying unit to a value equal to or less than a predetermined magnitude; a smoothing unit configured to supply a power to a load by smoothing a current output from the current limiting unit; and a floating prevention unit configured to be installed between an output terminal of the rectifying unit and an input terminal of the current limiting unit and to prevent an output of the rectifying unit from floating when the current limiting unit is interrupted.

Abstract: An operation method of communication node in a vehicle network is provided. The operation method includes transitioning from a sleep mode to an active mode and generating a first message that includes a first information indicating at least one communication node to be operated in the active mode. In addition, the method includes transmitting the first message to a second communication node to thus enhance performance of a vehicle network.

Abstract: An operation method of a communication node in a vehicle network is disclosed. A transmission method performed by a communication node may be configured to comprise performing an initialization operation for transmission of an audio video bridging (AVB) stream, performing an operation of obtaining a buffer for the transmission of the AVB stream, performing the transmission of the AVB stream stored in the buffer, and performing an operation of finalizing the transmission of the AVB stream. Accordingly, performance of the vehicle network can be enhanced.

Abstract: An operation method of a switch apparatus includes: obtaining configuration information of communication nodes connected to the switch apparatus; identifying ports connected to end nodes among the communication nodes based on the configuration information; identifying link statuses of the ports; and when the link statuses of the ports are a DOWN state during a predetermined period of time, changing an operation mode of the switch apparatus from a normal mode to a low-power mode.

Abstract: An operation method of communication node in a vehicle network is provided. The operation method includes transitioning from a sleep mode to an active mode and generating a first message that includes a first information indicating at least one communication node to be operated in the active mode. In addition, the method includes transmitting the first message to a second communication node to thus enhance performance of a vehicle network.

Abstract: An operation method of a first communication node in an Ethernet-based vehicle network includes: generating a data message including data when there is data to be transmitted to a second communication node belonging to the Ethernet-based vehicle network; and transmitting the data message to the second communication node. The data message further includes a first indicator indicating a type of the data and a second indicator indicating an encoding scheme applied to the data, such that a vehicle network even in an existing vehicle can support transmission and reception of information for the new IT service, and the performance of the vehicle network can be improved.

Abstract: An operation method of a first communication node supporting communications between an Ethernet-based network and a controller area network (CAN) includes: receiving an Ethernet message from a second communication node belonging to the Ethernet-based network; performing an integrity verification on first automotive safety integrity level (ASIL) authentication information included in the Ethernet message; generating a CAN message based on the Ethernet message for which the integrity verification has been completed; and transmitting the CAN message to a third communication node belonging to the CAN.

Abstract: An operation method of communication node in a vehicle network is provided. The operation method includes transitioning from a sleep mode to an active mode and generating a first message that includes a first information indicating at least one communication node to be operated in the active mode. In addition, the method includes transmitting the first message to a second communication node to thus enhance performance of a vehicle network.

Abstract: In-vehicle communication and, more particularly, a signal conversion method in a vehicle having Ethernet and controller area network (CAN) communication coexisting therein and an apparatus to perform the same are provided. The signal conversion method includes determining, by a processor, a start bit of at least one CAN signal disposed in a CAN message and generating an Ethernet signal having the CAN signal and the start bit that corresponds to the CAN signal in different fields.