Abstract: A transmitter generates a header frame having a frame length indicating the beginning of data to be transmitted, data frames having frame lengths representing the data to be transmitted, and an end frame having a frame length indicating the end of the data to be transmitted. Then, for all of the header frame, data frames and end frame, the transmitter executes transmitting the kth frame when the wireless communication space is available, thereby transmitting the header frame, data frames and end frame, one after another, in accordance with the CSMA/CA scheme.

Abstract: A wireless device (1) searches a database that stores positional information of the wireless device (1), a device (2-4) and control identifiers for controlling the devices (2-4) in an associated manner, acquires a device (2-4) located near the wireless device (1) and a control identifier for controlling the device (2-4) based on the positional information of the wireless device (1), and, based on the device (2-4) and the control identifier for controlling the device (2-4) that have been acquired, determines a controlled device (at least one of the devices (2-4)) and generates a control identifier for the controlled device. The wireless device (1) transmits, by wireless communication, the generated controlled identifier to a receiver mounted on the controlled device to control the controlled device.

Abstract: A wireless base station (1) includes a wakeup device (13) and a main device (14). When the main device (14) is in a sleep mode, the wakeup device (13) is connected to the antenna (11). Then, when the wakeup device (13) receives a wakeup signal for activating the wireless base station (1) from a terminal device assigned to the wireless base station (1) in a communication band used for wireless communication with the terminal device and when the information for identifying a wireless base station to be activated contained in the received wakeup signal is identical with the identification information of the wireless base station (1), the wakeup device (13) outputs a driving signal to the main device (14). The main device (14) transitions from the sleep mode to an operating mode in response to the driving signal from the wakeup device (13).

Abstract: A gas concentration detection device for detecting a gas concentration using a limiting current type gas concentration sensor. In an application voltage line set to pass through a plurality of limiting current regions for different values of gas concentration, the voltage set by the application voltage line is an identical first voltage value used when an air/fuel ratio corresponding to the gas concentration is in a predetermined first range, is an identical second voltage value different from the first voltage value used when the air/fuel ratio is in a second range adjacent to the first range, and the first voltage value and the second voltage value are switched between the first range and the second range.

Abstract: A gas concentration detection device for detecting a gas concentration using a limiting current type gas concentration sensor. In an application voltage line set to pass through a plurality of limiting current regions for different values of gas concentration, a ratio for lean is set as a ratio of change in current with respect to a change in voltage when an air/fuel ratio corresponding to the gas concentration is lean, and a ratio of rich different from the ratio for lean is set when the air/fuel ratio is rich.

Abstract: A surface texture measuring apparatus includes: a measurement sensor measuring, without contact, a surface texture of an interior wall of a cylinder portion of a measurable object while displacing in a normal direction of the interior wall at each measurement region into which the interior wall is divided in a circumferential direction of the cylinder portion; a W axis displacer displacing the measurement sensor in a W axis direction; a ? axis displacer displacing the measurement sensor in the circumferential direction, after measurement of the surface texture of a first measurement region, such that the measurement sensor faces a second measurement region adjacent to the first measurement region in the circumferential direction; and a controller adjusting a W axis direction measurement position for measuring the surface texture of the second measurement region while displacing the measurement sensor in the W axis direction.

Abstract: A decorative film that is arranged directly or indirectly on a display surface of a display device, and that includes a display region, which is a central part, having light transmissivity so that the display surface can be visually recognized from outside, and a decorative region, which is an outer peripheral part of the display region, for decorating the display surface; the decorative film including a base layer containing an insulating resin base material and arranged in the decorative region, a decorative pattern layer formed on a main surface of the base layer, and a light transmissive layer arranged in a space surrounded by the base layer and the decorative pattern layer in at least the display region.

Abstract: A wireless communication device 81 operates in either a ROD mode or a non-ROD mode. The non-ROD mode sets the state of the device to an active state that the device can perform wireless communication compliant with a first communication scheme with a communication destination device 82. The ROD mode: sets the state of the device to either the active state or a sleep state that the device can receive an activation instruction signal compliant with a second communication scheme requiring smaller electric power to receive a signal than the first communication scheme and cannot perform wireless communication compliant with the first communication scheme with the communication destination device; sets the state of the device to the sleep state when a predetermined sleep condition is satisfied; and sets the state of the device to the active state when the device receives the activation instruction signal.

Abstract: It is assumed that some railway vehicles each include a control device and other railway vehicles include no control devices and that one or more control devices may be included in a train information. If only one control device is included in the train formation, there is no problem. However, if two or more control devices are included therein, it means that multiple control systems exist therein, so that it is necessary to determine a control system consistently. When a train is activated and started for operations or when railway vehicles are coupled together or divided, a management server, which has the smallest IP address value assigned, for example, by a DHCP and which exhibits the highest processing speed, controls, as a main management server, all of such systems. Even if any trouble occurs in a network or in a network device, the management system is automatically reconstituted.

Abstract: An IP-based monitor camera system has been used to accomplish savings in labor in operating railway vehicles, such as passenger-carrying vehicles, and to confirm safety at multiple doors thereof. A monitoring system installed in a leading or rearmost vehicle allows a train driver or a train crew to use monitoring cameras for visually confirming motions of passengers in association with opening or closing of doors of the passenger-carrying vehicles so as to ensure safe and efficient operation of the passenger-carrying vehicles. When areas of the trimming frames of images captured by the monitor cameras are set for displaying the images on a monitor screen, the areas of the trimming frames of the monitor cameras are automatically read and set quickly, readily and reliably.

Abstract: A wireless base station (1) includes a wakeup device (13) and a main device (14). When the main device (14) is in a sleep mode, the wakeup device (13) is connected to the antenna (11). Then, when the wakeup device (13) receives a wakeup signal for activating the wireless base station (1) from a terminal device assigned to the wireless base station (1) in a communication band used for wireless communication with the terminal device and when the information for identifying a wireless base station to be activated contained in the received wakeup signal is identical with the identification information of the wireless base station (1), the wakeup device (13) outputs a driving signal to the main device (14). The main device (14) transitions from the sleep mode to an operating mode in response to the driving signal from the wakeup device (13).

Abstract: A receiver has an ID that includes three signal detection intervals (S1, S2, S3). The three signal detection intervals (S1, S2, S3) are detected as the receiver detects a signal consisting of a value larger than a threshold at each of the detection timings (DT1 to DT4). The transmitter transmits four radio frames (FR1 to FR4) such that each of the radio frames straddles the corresponding one of the detection timings (DT1 to DT4) in the receiver.

Abstract: A wireless base station (1) includes a wakeup device (13) and a main device (14). When the main device (14) is in a sleep mode, the wakeup device (13) is connected to the antenna (11). Then, when the wakeup device (13) receives a wakeup signal for activating the wireless base station (1) from a terminal device assigned to the wireless base station (1) in a communication band used for wireless communication with the terminal device and when the information for identifying a wireless base station to be activated contained in the received wakeup signal is identical with the identification information of the wireless base station (1), the wakeup device (13) outputs a driving signal to the main device (14). The main device (14) transitions from the sleep mode to an operating mode in response to the driving signal from the wakeup device (13).

Abstract: A packet interval (a time difference between sequentially received packets) in a certain previous time is calculated and a cumulative distribution function of the calculated packet interval is obtained. Meanwhile, a function value-corresponding to-flow end that is a boundary value of the cumulative distribution function to be considered as a flow end (timeout) in the range of a cumulative distribution function value is stored. From the cumulative distribution function obtained as described above, a value of a packet interval mapped to a cumulative distribution function value that matches the function value-corresponding to-flow end is set as a threshold. That is, the threshold is dynamically set based on a previous packet interval. Therefore, a packet stop period from a last packet reception time to a current time is measured, and it is detected as a flow timeout at a timing when the measured value is equal to or greater than the threshold.

Abstract: A drive unit includes: an electric motor; a circuit case that houses an inverter therein and is installed on the electric motor; a first cooling flow passage that is provided, in contact with the inverter, in the circuit case and lets a cooling liquid flow therethrough; a second cooling flow passage that is provided in the electric motor and lets the cooling liquid flow therethrough in communication with the first cooling flow passage; and an open end that is provided on at least one end side of the first cooling flow passage so as to be capable of being opened to the outside of the flow passage for the cooling liquid when the circuit case is installed on the electric motor.

Abstract: A terminal device (1) frame-length-modulates an identifier of the radio apparatus (3) to generate a plurality of frames having a plurality of frame lengths, and transmits the generated plurality of frames to an access point (2) over wire or wireless communication. The access point (2) transfers the plurality of frames transmitted by the terminal device (1) to the radio apparatus (3) in the IP or MAC layer. The radio apparatus (3) detects the plurality of frame lengths of the plurality of frames received from the access point (2) and decodes the detected plurality of frame lengths to obtain an identifier. If the obtained identifier matches the identifier of the radio apparatus (3), the radio apparatus (3) transitions to active mode.

Abstract: A mobile terminal device that includes a frame that supports a structure of the mobile terminal, a button that fits with a hole in the frame, a gasket that contacts with the button, a first area of which contacting with the button being configured to move when the button is pushed, and a second area of which being fixed to the frame by an adhesive, processing circuitry, and a switch that contacts with the gasket, and moves and applies current to the processing circuitry when the gasket moves in response to the button being pushed.

Abstract: A terminal device 2 transmits a wireless frame having a frame length or amplitude that represents the ID of a wireless base station 1 to be woken up to the wireless base station 1. The wireless base station 1 detects the wakeup ID from the frame length or amplitude of the wireless frame from the terminal device 2, and, if the detected wakeup ID is identical with its own ID, transitions from a sleep mode to an operating mode. In this case, the wireless frame is the same wireless frame as that transmitted and received by the wireless communication module of the terminal device 2 to and from the wireless base station 1.

Abstract: A driving device includes: a motor; a first housing portion housing the motor; a capacitor configured to stabilize a voltage of the DC power input to an input unit; an inverter unit configured to convert DC power into AC power; and a second housing portion housing the input unit, the capacitor, and the inverter unit. The motor includes a motor shaft to be coupled to an external load. The first housing portion and the second housing portion are integrally combined to be arranged along a second direction perpendicular to a first direction in which the motor shaft extends. The input unit, the capacitor, and the inverter unit are arranged in this order along a direction from an end side on a load side to be coupled to an external load toward another end side in the motor shaft.

Abstract: A driving device according to one aspect of the present disclosure includes: a motor including a winding wire; a first cooler configured to cool the motor; and a power converter coupled to the motor. The motor, the first cooler, and the power converter are arranged in this order along a first direction.