Electronic control device and determination method
AssigneeHitachi Astemo, Ltd.
InventorsYasuhiro Ikeda, Yutaka Uematsu, Hideyuki Sakamoto
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Abstract
An electronic control device includes a receiving unit that receives a data signal from an external device via a transmission line, a determination criterion selection unit that determines a determination criterion based on transition information of a waveform in the data signal, and a condition determination unit that determines a condition of a communication system including the external device, the receiving unit, and the transmission line based on a transmission waveform characteristic in the data signal and the determination criterion.
Claims7
An electronic control device comprising:
- a receiving unit that receives a data signal from an external device via a transmission line;
- a transmission characteristic extraction unit that uses an eye pattern at a first sampling number N1 and an eye pattern at a second sampling number N2 to estimate a characteristic of an eye pattern at a third sampling number N3 and calculate transition information of a waveform, wherein N3 is greater than N1 and N2;
- a determination criterion selection unit that determines a determination criterion based on the transition information of the waveform in the data signal;
- and
- a condition determination unit that determines a condition of a communication system including the external device, the receiving unit, and the transmission line based on a transmission waveform characteristic in the data signal and the determination criterion.
A determination method performed by a computer including a receiving unit that receives a data signal from an external device via a transmission line, the determination method comprising:
- using an eye pattern at a first sampling number N1 and an eye pattern at a second sampling number N2 to estimate a characteristic of an eye pattern at a third sampling number N3 and calculate transition information of a waveform, wherein N3 is greater than N1 and N2;
- determining a determination criterion based on the transition information of the waveform in the data signal;
- and
- determining a condition of a communication system including the external device, the receiving unit, and the transmission line based on a transmission waveform characteristic in the data signal and the determination criterion.
An electronic control device comprising:
- a receiver that receives a data signal from an external device via a transmission line;
- and
- a controller configured to
- determine a determination criterion based on transition information of a waveform in the data signal, and based on power supply voltages and temperature information of each of the external device and the electronic control device;
- and
- determine a condition of a communication system including the external device, the receiver, and the transmission line based on a transmission waveform characteristic in the data signal and the determination criterion.
Dependencies are inferred from the claim text.