Vehicle-Mounted Gateway Device, Electronic Control Device, and Vehicle-Mounted Network System
AssigneeHitachi Automotive Systems, Ltd.
InventorsShuhei KANEKO, Kazuhiro NAKANISHI
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Abstract
Provided is a relay technology capable of limiting transfer latency in a vehicle-mounted network. A vehicle-mounted gateway device according to the present invention: consolidates within a first data portion included in a large sized first communication frame a plurality of second data portions each included in a small sized second communication frame, thereby generating the first communication frame; and relays the first communication frame that has been generated.
Claims9
A vehicle-mounted gateway device relaying communication between a first vehicle-mounted network transmitting and receiving a first communication frame having a first data portion and a second vehicle-mounted network transmitting and receiving a second communication frame having a second data portion of which size is smaller than that of the first data portion,
- wherein the vehicle-mounted gateway device includes a generation unit generating the first communication frame by using the second communication frame,
- the vehicle-mounted gateway device further includes a transmission unit transmitting the first communication frame generated by the generation unit to the first vehicle-mounted network, and
- the generation unit consolidates the second data portions of a plurality of second communication frames to generate the first data portion in the first communication frame.
An electronic control device communicating via a first vehicle-mounted network,
- wherein the electronic control device includes a reception unit receiving, in a format of a first communication frame via a vehicle-mounted gateway device, a second communication frame having a second data portion of which size is smaller than that of a first data portion of the first communication frame transmitted and received by the first vehicle-mounted network,
- the electronic control device further includes an analysis unit analyzing a communication frame in a format of the first communication frame received by the reception unit, and
- the analysis unit retrieves a plurality of second data portions from the first data portion of the communication frame in the format of the first communication frame received by the reception unit.
A vehicle-mounted network system comprising:
- a vehicle-mounted gateway device relaying communication between a first vehicle-mounted network transmitting and receiving a first communication frame having a first data portion and a second vehicle-mounted network transmitting and receiving a second communication frame having a second data portion of which size is smaller than that of the first data portion;
- and
- an electronic control device communicating via the first vehicle-mounted network,
- wherein the vehicle-mounted gateway device includes a generation unit generating the first communication frame using the second communication frame,
- the vehicle-mounted gateway device further includes a transmission unit transmitting the first communication frame generated by the generation unit to the first vehicle-mounted network, and
- the generation unit consolidates the second data portions of a plurality of second communication frames to generate the first data portion in the first communication frame.
Dependencies are inferred from the claim text.