US 12,284,096 B2
Detection device, management device, detection method, and detection program
Isao Kato, Osaka (JP); Takanori Miyoshi, Osaka (JP); Satoru Sakurazawa, Osaka (JP); Yoichi Hata, Osaka (JP); and Takumi Asaina, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/786,063
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Sep. 10, 2020, PCT No. PCT/JP2020/034296
§ 371(c)(1), (2) Date Jun. 16, 2022,
PCT Pub. No. WO2021/152900, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 2020-011285 (JP), filed on Jan. 28, 2020.
Prior Publication US 2023/0022923 A1, Jan. 26, 2023
Int. Cl. H04L 43/08 (2022.01); H04L 12/40 (2006.01); G06F 21/55 (2013.01)
CPC H04L 43/08 (2013.01) [H04L 12/40 (2013.01); G06F 21/554 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A detection device comprising:
a switch provided to a transmission path that connects a plurality of function units to each other;
a measurement unit configured to measure a signal that passes the transmission path, at a first node on a first end side of the switch and at a second node on a second end side of the switch; and
a detection unit configured to
compare a measurement result at the first node and a measurement result at the second node, which are obtained by the measurement unit, with a reference measurement result which is a measurement result for reference, and
detect abnormality regarding the transmission path, based on a result of the comparison, wherein
the detection unit detects abnormality regarding the transmission path further based on a transmission direction of the signal in the transmission path, the transmission direction being determined based on the measurement result at the first node and the measurement result at the second node, such that:
upon determining that the transmission direction of the signal is from the first node of the switch to the second node of the switch, the detection unit detects abnormality regarding the transmission path in one way, and
upon determining that the transmission direction of the signal is from the second node of the switch to the first node of the switch, the detection unit detects abnormality regarding the transmission path in another way.