摘要:
This invention consists in improvements in a buried-heterostructure laser with buried optical guide, and facilitates the oscillation of the laser in the fundamental mode thereof and also enhances the available percentage of production of the laser. An active layer and an optical guide layer are sandwiched between two cladding layers, to form an optical confinement region. The width of the semiconductor material assembly varies in the direction of the stacked layers, and the narrowest part thereof is located on a side opposite to the optical guide layer with reference to the position of the active layer. The side surface of said semiconductor material assembly parallel to the traveling direction of laser radiation is buried by a burying layer.
摘要:
In a distribution type fuel injection system, the injection advance angle, or the relative angular position at which fuel injection begins, is controlled by a first spring loaded piston (44). The spring force is opposed by pressurized fuel from a pump (14), the pressure increasing with engine speed. A second spring loaded piston (49) moves the first piston (44) to an advanced position for starting the engine and is retracted when the fuel pressure reaches a certain value to retard the advance angle in an idling speed range. The fuel pressure moves the first piston (44) to progressively advance the angle in a higher speed range. An O-ring (61) is provided to an end of the second piston (49) which abuts against an end wall (53) so that the fluid pressure receiving area of the second piston (49) is small when the second piston (49) abuts against the end wall (53) but is greater when the second piston (49) is moved away from the end wall (53). The effect is that the second piston (49) is prevented from moving and retarding the advance angle until the engine speed and fuel pressure reach a relatively high value upon starting of the engine. Thereafter, the advance angle will be retarded upon a return of the engine speed to the idling range.
摘要:
In one form of the invention, a rotatable and axially slidable plunger mounted within a fixed cylindrical plunger barrel forms with the barrel the casing bore and a spring biased electromagnetically driven axially slidable cut off sleeve, a dash pot chamber including a narrow radial gap between the cut off barrel and the pump casing body. The high pressure cut-off fuel may be directed to the chamber. Alternatively, the cut-off fuel may be directed to impact a deflector to produce an axial force modulating axial shift of the sleeve.
摘要:
A plunger is reciprocable in a barrel to force fuel to the injection nozzles. The portion of the barrel defining with the plunger the compression chamber is movable and is formed with a port leading to the unpressurized fuel reservoir in such a manner that the plunger uncovers the port at the end of its fuel injection stroke to overflow fuel from the compression chamber to the reservoir and terminate fuel injection. The position of the movable portion of the barrel and thereby the port relative to the plunger determines the fuel injection volume. A closed loop electronic servo system is provided to position the movable part of the barrel in accordance with the required fuel injection volume.
摘要:
A method of producing the single crystals of the gadolinium molybdate family having a high transmission and low threshold field, comprising the step of growing a single crystal from a melt of the gadolinium molybdate family by a crystal pulling technique, the step of cooling slowly the single crystal in a temperature range of from immediately below a melting point to a segregation temperature of .alpha. phase of the single crystal and the further step of cooling under such cooling conditions that the .alpha. phase is not segregated and the value of the threshold field of the single crystal is not made large in a temperature range of below the segregation temperature of the .alpha. phase.
摘要:
In a first information processing apparatus, data in a first format is stored. Further, the data in the first format is transformed into a code image by using a predetermined encoding mode. Moreover, code image data in a second format is generated by combining the code image with the data in the first format. In a second information processing apparatus, predetermined information processing is performed based on the data in the first format. In a third information processing apparatus, the code image is displayed, by a first display device, based on the code image data in the second format.
摘要:
A quality degradation point estimating method for estimating a quality degradation point in a directed link set through which a communication flow passed is provided. The quality degradation point estimating method has: (A) determining a test flow set for estimating a quality degradation point; and (B) estimating the quality degradation point in the directed link set by sending the test flow set to the network. The (A) step includes a step of setting the flow, which passes through a partial set as a part of the directed link set, as the test flow and adding the set test flow to the test flow set. The test flow is sent from the test terminal on the network to a predetermined node in the partial set. A response is obtained at the predetermined node, and the response is sent from the predetermined node to a predetermined terminal.
摘要:
Prior to performing download play, it is determined whether or not a slave apparatus program has been already stored in an internal memory of a slave apparatus. When not stored yet, the slave apparatus program is transmitted from a master apparatus to the slave apparatus, and stored in the internal memory of the slave apparatus. When already stored, the slave apparatus program is not transmitted from the master apparatus to the slave apparatus. Then, multiplay is performed by performing mutual communication between the master apparatus operating in accordance with a master apparatus game program and the slave apparatus operating in accordance with a slave apparatus game program. Thus, time and effort for receiving the same application program more than once are omitted, and it is possible to efficiently start a communication process.
摘要:
A QoS degradation point estimation device includes a flow set decision unit, a flow quality information collection unit, a path information collection unit, a flow link table management unit, and a QoS degradation point estimation unit. Before generating a flow link table associating QoS of a flow through a network with a link the flow passes through, the flow set decision unit preferentially selects a flow passing through almost ½ of the links of the network as a flow to be registered in the table. The flow quality information collection unit collects information of the QoS of the flow. The path information collection unit collects path information of the network. The flow link table management unit generates the table based on the information of the QoS and the path information. The QoS degradation point estimation unit estimates a QoS degradation link based on the table.
摘要:
In a method of fabricating a semiconductor device having a MISFET of trench gate structure, a trench is formed from a major surface of a semiconductor layer of first conductivity type which serves as a drain region, in a depth direction of the semiconductor layer, a gate insulating film including a thermal oxide film and a deposited film is formed over the internal surface of the trench, and after a gate electrode has been formed in the trench, impurities are introduced into the semiconductor substrate of first conductivity type to form a semiconductor region of second conductivity type which serves as a channel forming region, and impurities are introduced into the semiconductor region of second conductivity type to form the semiconductor region of first conductivity type which serves as a source region.