Abstract: A ranging method and a range finder allow reliable measurement of the distance to a target object even when the target object has a very low reflectivity and/or under conditions with disturbances. The range finder includes: a light receiving element configured to receive a reflected component of light emitted to a target object; a first detection unit and a second detection unit configured to perform two different types of detections with different detection gains; and a distance/light-intensity calculation processing unit serves as a calculation unit for calculating a measured distance based on a combination of result patterns of the detections performed by the first and second detection units. The range finder determines a distance by causing each of the first and second detection units performs at least two detections with a time interval per a single light emission.

Abstract: A ranging method and a range finder allow reliable measurement of the distance to a target object even when the target object has a very low reflectivity and/or under conditions with disturbances. The range finder includes: a light receiving element configured to receive a reflected component of light emitted to a target object; a first detection unit and a second detection unit configured to perform two different types of detections with different detection gains; and a distance/light-intensity calculation processing unit serves as a calculation unit for calculating a measured distance based on a combination of result patterns of the detections performed by the first and second detection units. The range finder determines a distance by causing each of the first and second detection units performs at least two detections with a time interval per a single light emission.

Abstract: A method using a first information processing device, a second information processing device backing up first data of the first information processing device, and a third information processing device backing up second data of the second information processing device, the method includes storing, by the third information processing device, first information indicating that the second information processing device backs up the first data of the first information processing device, transmitting, from the third information processing device to the second information processing device, a first signal, and backing up, by the third information processing device, the first data of the first information processing device when the third information processing device does not receive, from the second information processing device, a first response signal that is a response to the first signal and indicates that the second information processing device transmits the second data to the third information processing device

Abstract: An image projection device is provided with at least one laser light source device and uses a light beam exited from the laser light source device as projection light. A laser light source device is provided with a plurality of light source units from which laser beams exit, the plurality of light source units are divided into a plurality of laser light source groups based on magnitudes of angles at which optical axes of the laser beams are incident on the incident surface. As the incident angles of the laser beams from the laser light source group are larger, an average value of convergence angle and/or divergence angle of the laser beams in the laser light source group becomes smaller when the laser beams are incident on the incident surface.

Abstract: A light source unit includes: a plurality of elemental light sources each including one or more light emitting elements and one or more drive circuits; a control circuit; and a plurality of color band light characteristic measurement sections each configured to receive light to generate color band light characteristic measurement data. A plurality of the light emitting elements in the elemental light sources includes light emitting elements different in wavelength band of emission wavelength from one another. The color band light characteristic measurement sections are provided corresponding to a plurality of the wavelength bands. One or more of the color band light characteristic measurement sections include a first light intensity measurement section and a second light intensity measurement section. The control circuit generates light intensity indicating values and wavelength deviation indicating values, generates color phase indicating values, and performs first feedback control on the drive circuits.

Abstract: An information processing method executed by a transmission device coupled to a plurality of communication paths, the transmission device including an input-side first interface device and a plurality of second interface devices in a subsequent stage of the first interface device, the information processing method includes obtaining, by the first interface device, statistical information on the communication paths at predetermined time intervals; when it is determined that a path in which a cumulative value of the statistical information exceeds a predetermined threshold value or a path in which loss of communication occurs is detected in the communication paths, notifying a relevant interface device of an alert, the relevant interface device being one of the plurality of second interface devices and using the detected path; and changing, by the relevant interface device, a frequency of obtaining the statistical information corresponding to at least the detected path, when the alert is received.

Abstract: An image projection device is provided with at least one laser light source device and uses a light beam exited from the laser light source device as projection light. A laser light source device is provided with a plurality of light source units from which laser beams exit, the plurality of light source units are divided into a plurality of laser light source groups based on magnitudes of angles at which optical axes of the laser beams are incident on the incident surface. As the incident angles of the laser beams from the laser light source group are larger, an average value of optical powers of the laser beams from the laser light source group becomes larger.

Abstract: A laser light source device (2) is provided with a plurality of laser light sources (21) from which laser light beams exit, an optical system (22) on which light beams exited from the plurality of laser light sources (21) are incident, and a light guide body (23) having an incident surface (23a) on which light beams exited from the optical system (22) are incident, at least two of the plurality of laser light sources (21) exit light beams having the same wavelength, and at least two of the light beams having the same wavelength are different in an incidence angles of an optical axis to the incident surface (23a).

Abstract: A light source unit includes: a plurality of elemental light sources each including one or more light emitting elements and one or more drive circuits; a control circuit; and a plurality of color band light characteristic measurement sections each configured to receive light to generate color band light characteristic measurement data. A plurality of the light emitting elements in the elemental light sources includes light emitting elements different in wavelength band of emission wavelength from one another. The color band light characteristic measurement sections are provided corresponding to a plurality of the wavelength bands. One or more of the color band light characteristic measurement sections include a first light intensity measurement section and a second light intensity measurement section. The control circuit generates light intensity indicating values and wavelength deviation indicating values, generates color phase indicating values, and performs first feedback control on the drive circuits.

Abstract: A transmission device that transmits a frame through either of a plurality of interface device, the transmission device includes a memory, and a first processor coupled to the memory and configured to transmit the frame to at least one of the plurality of interface device, when a connection fault has occurred in a line coupled to the plurality of interface device and a device internal fault has not occurred in the at least one of the plurality of interface device.

Abstract: A communication device includes: a plurality of ports configured to transmit and receive frames to and from another device; a switching unit configured to transfer the frames to another port based on identification information of the frames; a plurality of reception processing units configured to individually receive the frames transferred from the switching unit; a duplication processing unit configured to duplicate the frames, individually assign the identification information indicating a corresponding port to a plurality of duplicated frames and output the plurality of duplicated frames to the switching unit; and a control unit configured to perform control in accordance with control information included in one duplicated frame of the plurality of duplicated frames.

Abstract: A coil spring has a spring wire that is wound in a coil shape and whose sectional outer basic shape is circular and flat faces are formed between coil inner and outer diameter sections of a sectional outer shape of the spring wire, wherein a flattening T/W of the sectional outer shape with the flat faces in the coil axis direction is set so that a stress ratio is equal to or lower than a stress ratio of a coil spring whose sectional outer shape is circular.

Abstract: A transmission device that transmits a frame through either of a plurality of interface device, the transmission device includes a memory, and a first processor coupled to the memory and configured to transmit the frame to at least one of the plurality of interface device, when a connection fault has occurred in a line coupled to the plurality of interface device and a device internal fault has not occurred in the at least one of the plurality of interface device.

Abstract: A communication device includes: a plurality of ports configured to transmit and receive frames to and from another device; a switching unit configured to transfer the frames to another port based on identification information of the frames; a plurality of reception processing units configured to individually receive the frames transferred from the switching unit; a duplication processing unit configured to duplicate the frames, individually assign the identification information indicating a corresponding port to a plurality of duplicated frames and output the plurality of duplicated frames to the switching unit; and a control unit configured to perform control in accordance with control information included in one duplicated frame of the plurality of duplicated frames.

Abstract: The present invention is comprised for pre-setting bandwidth control information of each user for each of the number of normal physical links which are integrated as a Link Aggregation, recognizing the number of currently normal physical links if a failure, or recovery therefrom, of a physical link which is integrated as the aforementioned Link Aggregation, and carrying out a bandwidth control, for each user traffic, corresponding to the number of the recognized normal physical links by referring to bandwidth control information of each user for each of the number of preset normal physical links, in order to prevent an occurrence of unfairness in usable bandwidth among the users even in the case of a failure occurrence in respective physical links which are logically integrated as a Link Aggregation.

Abstract: A stress distribution state is improved and a better design is realized. A coil spring 1 has a spring wire 3 that is wound in a coil shape and whose sectional outer basic shape is circular. Between coil inner and outer diameter sections 5 and 7 of a sectional outer shape of the spring wire 3, flat faces 9 and 11 are formed so that coil portions adjacent to each other in the direction of a coil axis 4 are stabilized when they are brought into contact with each other. A flattening T/W of the sectional outer shape with the flat faces 9 and 11 in the coil axis direction is set so that a stress ratio is equal to or lower than a stress ratio of a coil spring whose sectional outer shape is circular. The flat faces 9 and 11 stably receive load and shorten a solid length in a tightly compressed state. This is advantageous in designing a spring having a longer stroke and lower rigidity.

Abstract: The present invention is intended to enable a efficient water-sealing treatment for an on-vehicle electric cable 10, i.e., an electric cable to be mounted on a vehicle, the cable having a conductor and a sheath disposed on the outside of the conductor, regardless of a length of the electric cable. The present invention provides a method comprising the step of establishing a state where a water-sealing agent 18 with fluidity covers a gap between the conductor and the sheath in an end of the on-vehicle electric cable 10, for example, through an operation of dropping the water-sealing agent 18 onto the end of the on-vehicle electric cable 10, and the step of pressurizing an ambient air around the water-sealing agent 18 to cause the water-sealing agent 18 to penetrate into the inside of the sheath of the on-vehicle electric cable 10.

Abstract: When establishment of a link is detected, a connection destination information request frame is transmitted via the established link to request information of a destination of connection. The connection destination information included in a connection destination information response frame received in response to that request is stored in a database and displayed on a display unit.

Abstract: The present invention is comprised for pre-setting bandwidth control information of each user for each of the number of normal physical links which are integrated as a Link Aggregation, recognizing the number of currently normal physical links if a failure, or recovery therefrom, of a physical link which is integrated as the aforementioned Link Aggregation, and carrying out a bandwidth control, for each user traffic, corresponding to the number of the recognized normal physical links by referring to bandwidth control information of each user for each of the number of preset normal physical links, in order to prevent an occurrence of unfairness in usable bandwidth among the users even in the case of a failure occurrence in respective physical links which are logically integrated as a Link Aggregation.

Abstract: A ring network, which can reduce the amount of processing, deal with the occurrence of faults, and lighten the load on an operator, includes a plurality of transmission apparatuses each including a cross-connect function unit and a communication function unit for sending and receiving messages using the overhead of an SDH frame, and a master transmission apparatus to which a command is input for switching from a UPSR to BLSR mode including a path management database, a path decision unit, and an interchange decision unit. The master transmission apparatus to which the command is input collects and stores path setting information of all of the transmission apparatuses in the path management database and sequentially performs processing for deciding on and deleting a long path and processing for interchanging a path on a protection channel to an idle work channel by sending and receiving a message.