Abstract: An optical communication system having an optical transmission line, where a first section of the optical transmission line is connected to a first optical communication device; and a second section of the optical transmission line is connected to a second optical communication device. The optical communication system further includes: a Raman light source; an incident device connected to same end of the second section of the optical transmission line as the second optical communication device; and a separating device interconnecting the first section of the optical transmission line to the second section of the optical transmission line. The incident device causes excitation light output from the Raman light source to be incident to the second section of the optical transmission line and performs distributed Raman amplification on the optical signal; and the separating device separates the excitation light that is caused to be incident by the incident device.

Abstract: An apparatus for collecting map-generating data includes a processor configured to count, for each of road sections, the number of pieces of map-generating data received in a first period from one of at least one vehicle, identify one of the road sections for which the number of pieces of map-generating data received in the first period does not reach a target number for the one of the road sections, and predict, for the identified road section, the number of pieces of map-generating data to be received in a second period ahead after the first period, based on history of traffic volume under each environmental condition or history of the number of pieces of map-generating data previously received for the road section.

Abstract: A map generation device extracts, by inputting an image in which a road is represented to a classifier that outputs, for each pixel of the image, a type of a feature object on the road represented by the pixel, a pixel representing a boundary feature object that represents a boundary of a lane among feature objects on the road, calculates a Voronoi boundary by Voronoi-dividing the image with each pixel representing the boundary feature object as a generating point, detects each of the calculated Voronoi boundaries as one lane, and generates map information representing each of the detected lanes.

Abstract: A processor of a remote facility executes image generation processing and display control processing. In the image generation processing, it is determined whether a front image includes an image of a mirror portion of a traffic mirror based on data of feature quantity of an object included in the front image. If it is determined that the front image includes the mirror portion image, an image of a preset region including the mirror portion is extracted from the front image. Then, a super-resolution image is generated by super-resolution processing for the image of this preset region. In the display control processing, if the front image includes the image of the mirror portion, the super-resolution image and the front image is displayed on a display of a remote facility.

Abstract: The data transmission device includes a processor configured to: acquire data based on a sensor signal from a sensor mounted on a vehicle repeatedly at a predetermined time interval, determine a selection cycle based on a movement speed of the vehicle and selects one or more sets of data from the repeatedly acquired data for each determined selection cycle, and transmit the selected one or more sets of data to an external server.

Abstract: An optical reception device including: a wavelength selection unit configured to split an optical signal amplified by an optical amplifier into different paths according to wavelengths by using a wavelength multiplexer/demultiplexer, and control a passage state of a passage target optical switch through which the optical signal is to be passed, out of a plurality of optical switches provided on the respective paths, to select an optical signal of a path where the optical signal entered and output the optical signal to a receiver; and a wavelength detection unit configured to detect the wavelength of an optical signal by using each of a plurality of optical detectors, determine the passage target optical switch based on a detection result, and output, to the determined passage target optical switch, a control signal for controlling the passage target optical switch so as to enter the passage state, the optical detectors being respectively provided on different paths that are different from the paths on which t

Abstract: An optical reception device including: a local light transmission unit configured to generate a plurality of local lights having different wavelengths, select a local light having a wavelength that is close to the wavelength of a received optical signal from among the plurality of generated local lights having different wavelengths, and transmit the selected local light to a coherent receiver; a demultiplexing unit configured to demultiplex a received optical signal and transmit the demultiplexed optical signal to the coherent receiver via a first path; and a wavelength detection unit configured to input the optical signal demultiplexed by the demultiplexing unit via a second path, split the input optical signal into different paths according to wavelengths by using a wavelength multiplexer/demultiplexer, and output, to the local light transmission unit, a control signal for causing the local light transmission unit to output a local light having a frequency that corresponds to a path in which the optical sig

Abstract: A remote operator that remotely assists in traveling the autonomous traveling vehicle refer to a remote monitoring terminal. A remote monitoring device acquires data of a plurality of sensors mounted on the autonomous traveling vehicle, executes an image generation processing for generating an around-view of the vehicle by processing the data, calculates the lane width of the lane traveled by the vehicle based on the map information, calculates the vehicle width ratio of the vehicle with respect to the lane width, and when the vehicle width ratio is greater than a predetermined determination threshold, provides the generated around-view by the image generation processing to the remote monitoring terminal.

Abstract: A map generation device extracts, by inputting an image in which a road is represented to a classifier that outputs, for each pixel of the image, a type of a feature object on the road represented by the pixel, a pixel representing a boundary feature object that represents a boundary of a lane among feature objects on the road, calculates a Voronoi boundary by Voronoi-dividing the image with each pixel representing the boundary feature object as a generating point, detects each of the calculated Voronoi boundaries as one lane, and generates map information representing each of the detected lanes.

Abstract: An autonomous driving system includes a target object position recognition unit configured to recognize a target object position detected by a vehicle-mounted sensor based on map information in a map database, a vehicle position recognition unit configured to recognize a vehicle position, a relative-relationship-on-map acquisition unit configured to acquire a relative-relationship-on-map between the target object and the vehicle based on the target object position and the vehicle position on the map, a detected-relative-relationship acquisition unit configured to acquire a detected-relative-relationship between the target object detected by the sensor and the vehicle based on a result of detection performed by the sensor, a map accuracy evaluation unit configured to evaluate map accuracy of the map information based on the relative-relationship-on-map and the detected-relative-relationship, and an autonomous driving permission unit configured to permit an autonomous driving control using the map information b

Abstract: Based on operation history data, a data processing device calculates an expected total number of a request for a remote assistance in a future unit time zone for each driving license classification in vehicles. The operation history data includes data of a unit time zone in which a remote assistance service has been provided and data of the driving license classification of the vehicle by which the remote assistance service has been provided. The data processing device also sets a predetermined number over the expected total number as a total headcount of operators engaged in the remote assistance service in the future unit time zone. The data processing device also determines an operator waiting to perform the remote assistance in the future unit time zone based on the total headcount and the driving license classification in vehicles owned by the operators.

Abstract: The remote operator recommendation system identifies, using the matching model, an adapted remote operator having an operator attribute adapted to a user attribute of a requesting user requesting remote operation of a vehicle from among standby remote operators. Furthermore, the remote operator recommendation system predicts, using the collaborative filtering model, an expected remote operator who has not been used by the requesting user but is expected to be highly evaluated by the requesting user from among the standby remote operators. The remote operator recommendation system recommends the expected remote operator to the requesting user in addition to the adapted remote operator.

Abstract: A production method for a proliferative liver organoid includes culturing liver stem cells or a tissue fragment including liver stem cells in a growth medium to obtain a proliferative liver organoid, in which the growth medium contains an interleukin-6 family cytokine. A production method for a metabolically activated liver organoid includes culturing the proliferative liver organoid produced by the production method for a proliferative liver organoid in a differentiation medium to obtain a metabolically activated liver organoid, in which the differentiation medium does not substantially contain an interleukin-6 family cytokine.

Abstract: Upon receipt of a coherent optical signal that includes a training signal generated using a code sequence constituted by multi-value phase modulation symbols, in which a deviation angle of a vector average of a one-symbol delay differential component of a signal generated on the basis of the code sequence has a prescribed angle and a modulation phase difference between adjacent symbols has a fixed, repeated pattern, a reception training signal corresponding to a training code sequence for frequency offset estimation is detected within a reception signal acquired by converting the received coherent optical signal into an electric signal, a plurality of delay differential components are calculated on the basis of the detected reception training signal and at least two delay signals of the reception training signal, each delay signal having a different number of delay symbols, and an averaged frequency offset amount is calculated using the calculated plurality of delay differential components.

Abstract: Upon receipt of a coherent optical signal that includes a training signal generated using a code sequence constituted by multi-value phase modulation symbols, in which a deviation angle of a vector average of a one-symbol delay differential component of a signal generated on the basis of the code sequence has a prescribed angle and a modulation phase difference between adjacent symbols has a fixed, repeated pattern, a reception training signal corresponding to a training code sequence for frequency offset estimation is detected within a reception signal acquired by converting the received coherent optical signal into an electric signal, a plurality of delay differential components are calculated on the basis of the detected reception training signal and at least two delay signals of the reception training signal, each delay signal having a different number of delay symbols, and an averaged frequency offset amount is calculated using the calculated plurality of delay differential components.

Abstract: A location estimating device has a processor that is configured to calculate a first estimated location of a vehicle using positional information representing the location of a vehicle and first map data overlapping with a first section of a vehicle traveling route, to calculate a second estimated location of the vehicle using positional information and second map data that overlaps with a second section of the traveling route, the first section and the second section having an overlapping section, and to assess whether or not the precision of the second estimated location satisfies a predetermined assessment criterion when the vehicle is traveling in the overlapping section from the first section toward the second section.

Abstract: An apparatus for collecting map-generating data includes a processor configured to count, for each of road sections, the number of pieces of map-generating data received in a first period from one of at least one vehicle, identify one of the road sections for which the number of pieces of map-generating data received in the first period does not reach a target number for the one of the road sections, and predict, for the identified road section, the number of pieces of map-generating data to be received in a second period ahead after the first period, based on history of traffic volume under each environmental condition or history of the number of pieces of map-generating data previously received for the road section.

Abstract: A map data collection device collects information for locations and attributes of road features contained in map data used for automatic operation control of a moving object, the map data collection device has a memory unit that stores map data containing information for the locations and attributes of one or more first road features, an input device that inputs information for the location and attributes of a second road feature detected using a sensor and a processor configured to refer to the map data stored in the memory unit, to select one first road feature present at the nearest location to the location of the second road feature, and to assess whether map data should be updated based on the attribute information for the first road feature, the attribute information for the second road feature and the distance between the first road feature and the second road feature.

Abstract: A map selection device having an acquisition device that acquires a traveling route from the current location of a vehicle to a destination, a storage device that stores multiple maps, and a processor configured to select one or more maps containing a traveling route from among the multiple maps stored in the memory, so as to include the region from the current location on the traveling route to the destination, and, when multiple map candidates exist containing a single zone included in the traveling route, to select a map candidate suitable for automatic control as the map to be utilized for traveling in the zone.

Abstract: An apparatus for managing maps is provided. The apparatus includes a processor configured to estimate a usage frequency of each of maps stored in a memory included in a vehicle and used for automated driving control of the vehicle, based on section information indicating sections used for automated driving control in each of the maps; and delete, from the memory, a map whose usage frequency is less than a frequency threshold.