Network system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorSatoshi Kawashima
Life of this patent
Estimating the term…
Abstract
A network system is mounted on a vehicle, and includes a plurality of sensors, a first bus used when the sensors transmit sensing data, a plurality of actuators, a second bus used when the actuators receive control data, a central electronic control unit that performs an operation based on the sensing data and generates the control data, a third bus used when the central electronic control unit receives the sensing data and transmits the control data, and a repeater. The repeater is configured to pass data flowing on the first bus to the third bus, pass data flowing on the third bus to the second bus, and block the flow of data from the third bus to the first bus and the flow of data from the second bus to the third bus.
Claims11
A network system for mounting on a vehicle, the system comprising:
- a plurality of sensors;
- a first bus connected to the plurality of sensors, the first bus being used when the plurality of sensors transmit sensing data;
- a plurality of actuators;
- a second bus connected to the plurality of actuators, the second bus being used when the plurality of actuators receives control data;
- a central electronic control unit configured to perform an operation based on the sensing data, and generate the control data as data for collectively performing vehicle control using the plurality of actuators;
- a third bus connected to the central electronic control unit, the third bus being used when the central electronic control unit receives the sensing data and transmits the control data;
- and
- a repeater connected to the first bus, the second bus, and the third bus, the repeater being configured to block a flow of data from the third bus to the first bus and a flow of data from the second bus to the third bus, the repeater including:
- a first circuit connected to the first bus as an input source and the third bus as an output destination, the first circuit being configured to pass first data flowing on the first bus to the third bus while shaping a waveform of the first data;
- and
- a second circuit connected to the third bus as an input source and the second bus as an output destination, the second circuit being configured to pass second data flowing on the third bus to the second bus while shaping a waveform of the second data,
- wherein, while the data flow on the buses, waveform distortion is generated causing a deterioration of communication quality due to a data error, and shaping the waveforms of the data includes generating a regulated signal waveform having a same signal value as an input data signal without the waveform distortion, and outputting the regulated signal waveform as an output data signal, thereby curbing the deterioration of the communication quality.
Dependencies are inferred from the claim text.