Abstract: An estimation device includes processing circuitry configured to extract a fixed-length feature amount from a payload of communication data, calculate a similarity between feature amounts of abnormal communication data, and determine that events are of a same type when the calculated similarity is greater than a predetermined threshold.

Abstract: A multilayer resin substrate includes resin layers that are laminated, a first copper foil on the resin layers and including first and second main surfaces having first and second surface roughnesses, respectively, and a second copper foil on the resin layers and including third and fourth main surfaces having third and fourth surface roughnesses, respectively. A distance between the first main surface and the second copper foil is shorter than a distance between the second main surface and the second copper foil. When the first, second, third, and fourth surface roughnesses are denoted as SR1, SR2, SR3, and SR4 respectively, a relationship SR1<SR3?SR4<SR2 is satisfied.

Abstract: A multilayer substrate module includes a first substrate portion including a first substrate portion body including first insulator layers stacked in a vertical direction and a first conductor layer and/or a first interlayer connection conductor provided at the first substrate portion body. A second substrate portion includes a second substrate portion body including second insulator layers stacked in the vertical direction and a second conductor layer and a second interlayer connection conductor provided at the second substrate portion body, and is mounted on an upper surface of the first substrate portion. A mount device is mounted on an upper surface or a lower surface of the second substrate portion. At least a portion of an inductance component is defined by the first conductor layer and the first interlayer connection conductor.

Abstract: An estimation apparatus includes processing circuitry configured to extract a predetermined number of similar normal pieces of packet data with a relatively high similarity to abnormal packet data from among a plurality of normal pieces of packet data based on a natural language processing model, and extract same-length packet data with the same packet length as the abnormal packet data from the similar normal packet data extracted, and compare the abnormal packet data with the same-length packet data for each byte to estimate an abnormal byte location.

Abstract: An electronic device includes a first substrate and a second substrate. On or in the first substrate, a signal conductor extending in a transmission direction of a high-frequency signal and including a turn portion when viewed in plan is provided. On or in the second substrate, a base overlapping the signal conductor in plan view and including a turn portion while extending along the signal conductor is provided. The base is defined by, for example, a metal plate, has electrical conductivity, and serves as a ground conductor. A gap is provided between the signal conductor and the base having electrical conductivity.

Abstract: A detection system includes a node and a verification server, wherein the node includes first processing circuitry configured to generate a plurality of random values based on a seed received from the verification server, and generate a response based on information on an area of a first storage content specified by the plurality of generated random values, and transmit the generated response to the verification server, and the verification server includes second processing circuitry configured to generate a plurality of random values based on the seed, generate a verification response based on information on an area of a second storage content specified by the plurality of generated random values, determine whether the response received from the node matches the verification response, and output a determination result.

Abstract: A multilayer substrate includes an insulator that includes a first region and a second region that is thinner than the first region, and a first signal line and a second signal line that are structured to extend across the first region and the second region. In a region in which the first signal line and the second signal line face each other, a line width of the first signal line and a line width of the second signal line are smaller in the second region than in the first region, and a distance between the first signal line and the second signal line is smaller in the second region than in the first region.

Abstract: A detection system includes two or more nodes and a base station that holds information on each of the nodes, wherein the base station includes first processing circuitry configured to search for a circuit passing through all nodes in a network only once, sequentially calculate as many hash values as a number of nodes in the network, and notify each node of an order in the circuit, a hash value according to the order among the calculated hash values, and a node in a subsequent stage in the circuit, and each of the nodes includes second processing circuitry configured to send a hash value notification of which is provided and a challenge to a node in a subsequent stage according to the order notification of which is provided, and verify whether or not the sent hash value matches a value calculated from the hash value notification of which is provided.

Abstract: A transmission line includes a substrate, a high-frequency signal transmission line, a differential signal transmission line, and a power supply line. The substrate is insulating, extends in a predetermined direction, and internally includes each of the high-frequency signal transmission line, the differential signal transmission line, and the power supply line. The power supply line and the high-frequency signal transmission line are in parallel or substantially in parallel to each other, and the differential signal transmission line is between the power supply line and the high-frequency signal transmission line.

Abstract: A multilayer substrate includes an insulator that includes a first region and a second region that is thinner than the first region, and a first signal line and a second signal line that are structured to extend across the first region and the second region. In a region in which the first signal line and the second signal line face each other, a line width of the first signal line and a line width of the second signal line are smaller in the second region than in the first region, and a distance between the first signal line and the second signal line is smaller in the second region than in the first region.

Abstract: A detection device includes processing circuitry configured to acquire data to be detected and normal reference data, calculate a Learned Perceptual Image Patch Similarity (LPIPS) distance between the acquired data and the reference data, and classify the acquired data into either a Clean Sample or an Adversarial Example by using the calculated LPIPS distance.

Abstract: A transmission line includes a first interlayer connection conductor connecting a first signal conductor and a first mounting electrode, a second interlayer connection conductor connecting a second signal conductor and a second mounting electrode, a third and fourth interlayer connection conductors respectively including third and fourth interlayer connection conductors, and each connecting first and second ground conductors between the first and second signal conductors.

Abstract: A detection device includes a feature value database configured to store a packet feature value, a label assigned to each packet feature value, and a threshold used for determination in advance. The detection device includes a memory and a processor coupled to the memory. The processor is configured to perform operations including: converting a target packet into a feature value using a first natural language processing model that has been trained using normal communication packets as learning data; assigning a label to the feature value converted using the first natural language processing model, based on the feature value converted using the first natural language processing model and the data stored in the feature value database; and determining whether the target packet has an anomaly based on the assigned label.

Abstract: An estimation device includes processing circuitry configured to estimate normal data having maximum similarity between abnormal data determined to be abnormal and each of a plurality of pieces of normal data determined to be normal, and compare the abnormal data with normal data estimated to have the maximum similarity and extract a portion of the abnormal data having no portion corresponding to the normal data as a portion causing abnormality.

Abstract: A distributed constant filter includes a resonator that is not grounded and a first ground electrode. The first ground electrode faces the resonator in a first direction (Z). The resonator is a distributed constant line resonator. The resonator includes a plurality of distributed constant lines and a via conductor. The plurality of distributed constant lines are arranged in layers in the first direction (Z). The via conductor extends in the first direction (Z). Each of the plurality of distributed constant lines is connected to the via conductor only at one end portion of both end portions of the distributed constant line.

Abstract: A flexible substrate includes a base substrate that has flexibility, connecting portions on the base substrate and connectible to an antenna substrate and a circuit substrate, and a first line and a second line at the base substrate and connected to the connecting portions. The first line and the second line include a first region in which the first line and the second line extend in parallel or substantially in parallel with each other, and a second region in which the first line and the second line are closer to each other than in the first region and coupled to each other, and the second region defines a directional coupler.

Abstract: An electronic device includes a circuit boards that have a same or substantially same shape, and flat cables that have a same or substantially same shape. The circuit boards are provided in a predetermined arrangement and are connected by the flat cables. Each of the flat cables is a semi-rigid cable, having a shape in accordance with the predetermined arrangement of the circuit boards.

Abstract: An estimation device includes processing circuitry configured to generate a feature quantity by performing invertible transformation on a payload of a packet character by character with respect to each packet determined to be abnormal or normal by an abnormality detector, and give a determination result as to whether a packet is abnormal or normal to the generated feature quantity, learn a model that classifies whether the packet is abnormal or normal by machine learning using the feature quantity of the payload of the packet and the determination result as to whether the packet is abnormal or normal as teacher data, extract a number of dimensions of the feature quantity in which a contribution degree to classification is equal to or greater than a predetermined value in the learned model, and estimate a cause part of abnormality in the payload of the packet determined to be abnormal.

Abstract: A multilayer substrate includes an insulator that includes a first region and a second region that is thinner than the first region, and a first signal line and a second signal line that are structured to extend across the first region and the second region. In a region in which the first signal line and the second signal line face each other, a line width of the first signal line and a line width of the second signal line are smaller in the second region than in the first region, and a distance between the first signal line and the second signal line is smaller in the second region than in the first region.

Abstract: A multilayer substrate includes an insulator that includes a first region and a second region that is thinner than the first region, and a first signal line and a second signal line that are structured to extend across the first region and the second region. In a region in which the first signal line and the second signal line face each other, a line width of the first signal line and a line width of the second signal line are smaller in the second region than in the first region, and a distance between the first signal line and the second signal line is smaller in the second region than in the first region.