Abstract: A transaxle includes a case having an opening, a second rotating electric machine stored in the opening of the case and having a stator, a rear planetary gear stored in the transaxle case and connected to the second rotating electric machine, a transaxle rear cover sealing the opening and a bolt fixing the second rotating electric machine to the transaxle case. The stator has first and second thrust end faces defining an axial length thereof. The first thrust end face is pressed against an inner surface of the case.

Abstract: There is provided an optical transmission device which includes a determiner, a convertor, and a switch. The determiner determines whether a frame includes a fixed stuff byte area or not when the frame is received from a first network, where the frame includes a payload area for storing client data and the fixed stuff byte area is for storing fixed data. When the determiner determines that the frame includes the fixed stuff byte area, a convertor to convert a fixed stuff byte area into the payload area and a switch switches a clock frequency from a first clock frequency used in the first network to a second clock frequency used in a second network when the frame including the converted fixed stuff byte area is output to the second network on the basis of the clock frequency as a reference.

Abstract: During initial start-up of an optical communication system, an ASE reference span loss is calculated based on transmitting power and received power of ASE light generated by an optical amplifier, and an OSC reference span loss is calculated based on the transmitting power and the received power of OSC light. During normal operation of the optical communication system, a span loss is calculated using the OSC light, and an amount of change in the span loss representing a difference between the span loss and the OSC reference span loss is calculated. A current span loss between a transmitting station and a receiving station is calculated by adding the amount of change in the span loss to the ASE reference span loss.

Abstract: The present invention relates to prevention of erroneous connection in an optical network and, in particular, it provides an optical communication node having route switching function as well as an optical network system using the same in a wavelength division multiplex (WDM) network system. There is provided an optical communication node that is connected to a specific optical path in an optical network, the optical communication node having: an external network that is placed thereunder; and an interruption part for interrupting connection between the optical network and the external network, wherein the interruption part interrupts the connection until a sequence of changing a route is completed when the route setting of the optical path is changed.

Abstract: An engine-driven generator is provided that is formed by supporting an engine (3) and a generator (4) on a frame (2), wherein the frame (2) is formed as an open periphery framework type, within this frame (2) a duct member (31) is disposed around the outer periphery of the engine (3) and the generator (4), the duct member (31) defining a series of cooling air passages (32) between itself and the engine (3) and generator (4), a cooling fan (26) is provided in the cooling air passage (32), the cooling fan (26) being driven by the engine (3), an intake box (34) having an intake opening (38) at an outer end thereof and housing an electrical component (53, 55) is connected to the upstream end of the duct member (31), and an exhaust box (68) having an exhaust opening (73) at an outer end thereof and housing an exhaust muffler (74) of the engine (3) is connected to the other end of the duct member (31). A compact engine-driven generator that enables running noise to be reduced can thereby be provided.

Abstract: An engine-driven work machine is provided in which elastic support members (11, 11) are disposed between a lower part of a work unit (U) having an engine (3) and a frame (2) having the work unit (U) mounted thereon, the elastic support members (11, 11) being disposed beneath a crankshaft (17) of the engine on either side of a vertical plane (V) passing through the axis of the crankshaft (17), and restricting means (122) is provided between the work unit (U) and the frame (2), the restricting means (122) restricting the amplitude of swing of the work unit (U) around the crankshaft (17) to within a predetermined angle, and the restricting means (122) being disposed between upper parts of the work unit (U) and the frame (2). Even when the work unit receives a large external force in the lateral direction, swing of the work unit can thereby be restricted to within the predetermined angle.

Abstract: A D/A converter of the current switching type has a first current mirror circuit that D/A converts the upper (n?m) digits in n bit data to be converted and a weighting current circuit block or a second current mirror circuit that D/A converts the lower m digits in the data, by cascade connecting the weighting current circuit block or the second current mirror circuit at the upstream or at the downstream side of an output side transistor other than the output side transistors of the first current mirror circuit. In this manner, current flowing through the output side transistor flows as diverting currents to the weighting current circuit block or the second current mirror circuit corresponding to the digit weights of the lower m digits, and the diverting currents are taken out at the outputs of the D/A conversion circuit as analog converted currents of the lower m digits.

Abstract: An optical transmission device includes: an attenuator that attenuates an optical signal from an adjacent optical transmission device; an optical element that is arranged downstream of the attenuator; a detector that detects a change in a characteristic of a transmission path; and a controller that adjusts, when the change is detected, an attenuation of the attenuator to keep the level of the optical signal input to the optical element at a predetermined level.

Abstract: A D/A converter of the current switching type has a first current mirror circuit that D/A converts the upper (n?m) digits in n bit data to be converted and a weighting current circuit block or a second current mirror circuit that D/A converts the lower m digits in the data, by cascade connecting the weighting current circuit block or the second current mirror circuit at the upstream or at the downstream side of an output side transistor other than the output side transistors of the first current mirror circuit. In this manner, current flowing through the output side transistor flows as diverting currents to the weighting current circuit block or the second current mirror circuit corresponding to the digit weights of the lower m digits, and the diverting currents are taken out at the outputs of the D/A conversion circuit as analog converted currents of the lower m digits.

Abstract: A system and method of transmitting client data encoded according to an 8B/10B encoding between a client side and an optical communication network side, including inserting padding signals in an amount corresponding to a rate difference between a clock on the client side and a clock in the optical transmission device and controlling a clock to be used as a reference in transmitting the client data to synchronize with a clock having been used as a reference in transmitting the client data on the basis of a ratio of padding signals having been inserted in the client data.

Abstract: An optical transmission device includes: an attenuator that attenuates an optical signal before being input into an optical element by a predetermined attenuation amount determined so that a level of an adjustment optical signal input into the optical element falls within a predetermined dynamic range of the optical element; and a controller that adjusts the predetermined attenuation amount so that a level of the optical signal input into the optical element falls within the predetermined dynamic range.

Abstract: According to an aspect of an embodiment, in a light transmission device for switching a light transmission path for receiving an optical signal from a currently used system to a backup system when the light level of light input from a light transmission path of a currently used system becomes substantially equal to or less than a light input break detection threshold value which serves as a reference for detecting a light input break. The light transmission device includes light level measuring means for measuring the light level of the light input from the light transmission path of the currently used system, and light input break detection threshold value setting means for detecting only the light level of accumulated noise of the light level measured by the light level measuring means and setting the detected light level as the light input break detection threshold value.

Abstract: To provide an organic EL drive circuit and an organic EL display device using the organic EL drive circuit, which, when grey levels of passive matrix type organic EL elements are controlled time-divisionally, is capable of easily collecting luminance in low luminance level with low drive voltage and restricted power consumption. [Means for Resolution] An organic EL drive circuit, which has a plurality of current drive circuits for generating PWM pulse having pulse width corresponding to display data of luminance of organic EL elements and outputting a drive current for driving the organic EL elements for a time period corresponding to the PWM pulse, comprises a peak current generator circuit for generating a peak current on the drive current.

Abstract: An engine-driven generator is provided that is formed by supporting an engine (3) and a generator (4) on a frame (2), wherein the frame (2) is formed as an open periphery framework type, within this frame (2) a duct member (31) is disposed around the outer periphery of the engine (3) and the generator (4), the duct member (31) defining a series of cooling air passages (32) between itself and the engine (3) and generator (4), a cooling fan (26) is provided in the cooling air passage (32), the cooling fan (26) being driven by the engine (3), an intake box (34) having an intake opening (38) at an outer end thereof and housing an electrical component (53, 55) is connected to the upstream end of the duct member (31), and an exhaust box (68) having an exhaust opening (73) at an outer end thereof and housing an exhaust muffler (74) of the engine (3) is connected to the other end of the duct member (31). A compact engine-driven generator that enables running noise to be reduced can thereby be provided.

Abstract: A power transmission device is provided with: a first gear having a plurality of teeth that share an identical tooth profile; an intermediate gear that is engaged with the first gear; and a second gear that is engaged with the intermediate gear, and has a plurality of teeth that share an identical tooth profile, wherein the first gear and the second gear have an identical number of teeth, an identical reference diameter, and an identical reference pitch; and the tooth profile of the first gear is different from that of the second gear

Abstract: A motor generator that suppresses vibration that may be generated when power is transmitted through meshed gears includes: a stator; a case, a plurality of bolts that are used to attach the stator to the case; a rotor, rotatably mounted inside die stator; a first gear, coupled to and arranged concentrically with the rotor, for transferring power; and a second gear in meshing engagement with the first gear One of the plurality of bolts is positioned in the stator at a position to receive a reaction force, generated when power is transmitted through the meshed first and second gears and that acts radially outward from the central axis of the rotor on the stator, from one of the first gear and a the second gear. Thus, the transmission of undesirable vibration and noise to the passenger compartment is minimized.

Abstract: A lottery device has a turntable 12 with a plurality of ball pockets 13 and balls 2 each to be dropped onto the turntable 12, rolls on the turntable 12 and eventually falls into one of the ball pockets 13 to determine a winner ball pocket 13. The lottery device includes sets of sensors 24 and 25 combined with the ball pockets 13, respectively, to detect the ball that has fallen into the corresponding ball pocket 13, light-emitting rings 23 combined with the ball pockets 13, respectively, a ball identifying mechanism 41 for identifying the balls by type, and a computer 100 including a storage unit storing control programs and controlling lottery operations according to the control programs.

Abstract: In an optical signal level control apparatus used in a WDM system, the amount of circuitry per wavelength is reduced. Optical power level is detected on the output side of a variable optical attenuator, and the amount of attenuation in the variable optical attenuator is adjusted so that the output level becomes equal to a constant value L1. At this time, if the detected level is lower than a threshold value Th0 or Th-d, it is determined that a signal off condition has occurred, and the amount of attenuation is set to a constant value A1. The amount of attenuation, A1, is chosen to be sufficiently larger than the amount of attenuation used in the output level constant control but small enough to be able to detect the restoration of the signal. When the amount of attenuation is being held at the constant value A1, if the output level is restored to a level higher than the threshold value Th0 or Th1 (Th1<Th-d), the output constant control is resumed.

Abstract: A transaxle includes a case having an opening, a second rotating electric machine stored in the opening of the case and having a stators, a rear planetary gear stored in the transaxle case and connected to the second rotating electric machine, a transaxle rear cover sealing the opening and a bolt fixing the second rotating electric machine to the transaxle case. The stator has first and second thrust end faces defining an axial length thereof. The first thrust end face is pressed against an inner surface of the case.

Abstract: A method for switching a transmission route in an optical network. A regenerator station extracts a main signal, and detects the input level of the main signal. When the input level falls below a threshold, the regenerator station determines that a failure occurs, and stops output of a main signal from the regenerator station, and transmits a control signal indicating occurrence of the failure to a receiver station, which separates the control signal from a main signal transmitted thereto, detects the input level of the main signal at the receiver station, analyzes the separated control signal, and determines whether or not a failure occurs. When the input level of the main signal at the receiver station falls below a threshold, or when the separated control signal indicates occurrence of a failure, the receiver station detects the occurrence of the failure, and switches the transmission route.