Abstract: A shelf for receiving a plurality of electronic circuit boards, the electronic circuit boards having a structure where a connecter installing part is provided at a front end part of each of the boards and an optical transmitting and receiving element for optical communications between two or more of the electronic circuit boards is provided at a rear end part of each of the boards, includes a plurality of connectors arranged on a backboard of the shelf, the shelf having a right hexahedral-shaped configuration, the connectors detachably supporting the connecter installing parts of the electronic circuit boards; and a bonnet attached to a front surface opening part of the shelf so as to form a closed space, the bonnet having a mirror surface situated at a rear surface of the bonnet so that an optical communication signal being received and transmitted between two or more of the electronic circuit boards is reflected.

Abstract: A power correction value generating unit determines a power correction value for minimizing an error, from a reference output power value of a carrier multiplexed signal, generating due to peak power suppression under a carrier setting based on the carrier setting relating to either one or both of the number of carrier signals and frequency arrangement, and peak suppression setting. An output power error correcting unit corrects a signal gain before or after the carrier signals are multiplexed, using the power correction value obtained by the power correction value generating unit. In an apparatus performing peak suppression according to an input limitation power of the power amplifier, it is possible to always obtain a desirable transmission (output) power even when the number of carriers or carrier frequency arrangement varies.

Abstract: An apparatus for erasing an image formed, on a medium, with an erasable image-forming material by heating the medium includes a heating unit for electrically heating the image formed, on an medium, with an erasable image-forming material, at a predetermined temperature. The image-erasing apparatus may further include a substance treating unit for decomposing and/or adsorbing the substances produced in the heating step.

Abstract: AlGaInP system laser device (24) and AlGaAs system laser device (26) are arranged so that respective stripes (28, 30) are parallel to each other. The AlGaInP system laser device (24) is placed to (011) plane (22b) side from the centerline of the substrate and the AlGaAs system laser device (26) is placed to the (0{overscore (1)}{overscore (1)}) plane (22a) side from the centerline of the substrate when viewed from the main emitting plane (01{overscore (1)}) (22c) side of laser light. Substrate (22) is an off substrate and inclines from the (0{overscore (1)}{overscore (1)}) plane (22a) toward the (011) plane (22b) with respect to the (100) plane at a certain angle (? off) within the range of 2 degrees and 15 degrees. Optical axis L1 of the AlGaInP system laser device (24) is parallel to optical axis L2 of the AlGaAs system laser device (26) and approaches at an angle of about 0.5 degrees.

Abstract: A work inspection system 2 includes: a conveyor table 7 vertically positioned, and conveying works W stored in work-storing pockets 9; a work inspection apparatus for inspecting the works stored in the work-storing pockets 9 of the conveyor table 7; and a sorting and ejecting apparatus 12 for sorting the inspected works stored in the work-storing pockets of the conveyor table in accordance with a property of the works and ejecting the same. The work-storing pockets 9 of the conveyor table 7 are positioned inside the periphery 7a of the conveyor table 7 to surround the works W. The work-storing pockets 9 are disposed along two concentric circles on the conveyor table 7.

Abstract: A soldering machine includes a solder vessel, an electromagnetic pump, and a nozzle. The solder vessel stores molten solder, and the electromagnetic pump moves the solder by generating electromagnetic force. The electromagnetic pump is submerged below the liquid surface of the solder. The nozzle ejects the solder in the solder vessel onto an object, such as a printed circuit board. Accordingly, the generated heat from the electromagnetic pump is conducted to the solder in the solder vessel, and the solder can be heated to a higher temperature than in the conventional soldering machine.

Abstract: A power correction value generating unit determines a power correction value for minimizing an error, from a reference output power value of a carrier multiplexed signal, generating due to peak power suppression under a carrier setting based on the carrier setting relating to either one or both of the number of carrier signals and frequency arrangement, and peak suppression setting. An output power error correcting unit corrects a signal gain before or after the carrier signals are multiplexed, using the power correction value obtained by the power correction value generating unit. In an apparatus performing peak suppression according to an input limitation power of the power amplifier, it is possible to always obtain a desirable transmission (output) power even when the number of carriers or carrier frequency arrangement varies.

Abstract: AlGaInP system laser device (24) and AlGaAs system laser device (26) are arranged so that respective stripes (28, 30) are parallel to each other. The AlGaInP system laser device (24) is placed to (011) plane (22b) side from the centerline of the substrate and the AlGaAs system laser device (26) is placed to the (0{overscore (1)}{overscore (1)}) plane (22a) side from the centerline of the substrate when viewed from the main emitting plane (01{overscore (1)}) (22c) side of laser light. Substrate (22) is an off substrate and inclines from the (0{overscore (1)}{overscore (1)}) plane (22a) toward the (011) plane (22b) with respect to the (100) plane at a certain angle (? off) within the range of 2 degrees and 15 degrees. Optical axis L1 of the AlGaInP system laser device (24) is parallel to optical axis L2 of the AlGaAs system laser device (26) and approaches at an angle of about 0.5 degrees.

Abstract: AlGaInP system laser device (24) and AlGaAs system laser device (26) are arranged so that respective stripes (28, 30) are parallel to each other. The AlGaInP system laser device (24) is placed to (011) plane (22b) side from the centerline of the substrate and the AlGaAs system laser device (26) is placed to the (0{overscore (1)}{overscore (1)}) plane (22a) side from the centerline of the substrate when viewed from the main emitting plane (01{overscore (1)}) (22c) side of laser light. Substrate (22) is an off substrate and inclines from the (0{overscore (1)}{overscore (1)}) plane (22a) toward the (011) plane (22b) with respect to the (100) plane at a certain angle (? off) within the range of 2 degrees and 15 degrees. Optical axis L1 of the AlGaInP system laser device (24) is parallel to optical axis L2 of the AlGaAs system laser device (26) and approaches at an angle of about 0.5 degrees.

Abstract: In a network employing code division multiplex access, a distortion compensation amplifying apparatus is provided which is capable of making quick response to carry out the distortion compensation with high accuracy even if the signal power to be inputted thereto varies rapidly. In this distortion compensation amplifying apparatus, the renewal of a distortion compensation coefficient in a renewing unit is complemented on the basis of a result of amplification in an amplifier with respect to a signal code-division-multiplexed in a pseudo-signal multiplexing unit.

Abstract: An apparatus for erasing an image formed, on a medium, with an erasable image-forming material by heating the medium includes a heating unit for electrically heating the image formed, on an medium, with an erasable image-forming material, at a predetermined temperature. The image-erasing apparatus may further include a substance treating unit for decomposing and/or adsorbing the substances produced in the heating step.

Abstract: A distortion compensator updating and selecting a distortion compensation coefficient applied to a digital transmission signal so as to reduce the difference between the digital transmission signal and a digital feedback signal is disclosed. The distortion compensator includes a control part that controls the level of an input signal to an analog-to-digital conversion part outputting the digital feedback signal in accordance with the magnitude of the amplitude of the digital transmission signal.

Abstract: A soldering machine includes a solder vessel, an electromagnetic pump, and a nozzle. The solder vessel stores molten solder, and the electromagnetic pump moves the solder by generating electromagnetic force. The electromagnetic pump is submerged below the liquid surface of the solder. The nozzle ejects the solder in the solder vessel onto an object, such as a printed circuit board. Accordingly, the generated heat from the electromagnetic pump is conducted to the solder in the solder vessel, and the solder can be heated to a higher temperature than in the conventional soldering machine.

Abstract: A work inspection system 2 includes: a conveyor table 7 vertically positioned, and conveying works W stored in work-storing pockets 9; a work inspection apparatus for inspecting the works stored in the work-storing pockets 9 of the conveyor table 7; and a sorting and ejecting apparatus 12 for sorting the inspected works stored in the work-storing pockets of the conveyor table in accordance with a property of the works and ejecting the same. The work-storing pockets 9 of the conveyor table 7 are positioned inside the periphery 7a of the conveyor table 7 to surround the works W. The work-storing pockets 9 are disposed along two concentric circles on the conveyor table 7.

Abstract: A vacuum suction system comprises a work conveyor table 2 having work receiving openings 5, and a table base 3 having vacuum suction channels 7 which communicate with the work receiving openings 5 of the conveyor table 2. The work receiving openings 5 and the vacuum suction channels 7 communicate with a vacuum generation source 17 via a vacuum pipe 9. A negative pressure sensor 10 is disposed on the vacuum pipe 9. Based on a signal from the negative pressure sensor 10, a compressed air generation source 20 supplies a compressed air to the vacuum pipe 9 and thereby stabilizes the vacuum level in the vacuum pipe 9.

Abstract: A laser diode capable of reducing an operating current and thereby improving long term reliability and able to be produced by a simpler process than in the prior art and a semiconductor light emitting device and a method of production thereof; wherein a first clad layer, an active layer, and a second clad layer are formed on a substrate, a third clad layer and a contact layer are formed on a current injection stripe region thereon, an electrode is formed so as to be connected to the second clad layer in regions other than the current injection stripe region and to be connected to the contact layer, and, at the time of emitting laser light from a laser light oscillation region by injection of a first current to the electrode via the contact layer by application of voltage, a second current which is smaller than the first current is injected in regions other than the current injection stripe region via the second clad layer, so that a laser diode is configured wherein currents at ends of the laser light oscilla

Abstract: AlGaInP system laser device (24) and AlGaAs system laser device (26) are arranged so that respective stripes (28, 30) are parallel to each other. The AlGaInP system laser device (24) is placed to (011) plane (22b) side from the centerline of the substrate and the AlGaAs system laser device (26) is placed to the (0{overscore (1)}{overscore (1)}) plane (22a) side from the centerline of the substrate when viewed from the main emitting plane (01{overscore (1)}) (22c) side of laser light. Substrate (22) is an off substrate and inclines from the (0{overscore (1)}{overscore (1)}) plane (22a) toward the (011) plane (22b) with respect to the (100) plane at a certain angle (&thgr; off) within the range of 2 degrees and 15 degrees. Optical axis L1 of the AlGaInP system laser device (24) is parallel to optical axis L2 of the AlGaAs system laser device (26) and approaches at an angle of about 0.5 degrees.

Abstract: A system for controlling topology views for operators in network management includes a data-storage unit which stores data of a base topology view, a security-management unit which controls access-authorization information with respect to each of the operators, the access-authorization information for a given operator defining network elements accessible by the given operator, and a topology-view-management unit which generates data of a dependent topology view by making a partial copy of the data of the base topology view only with respect to the network elements accessible by the given operator, thereby providing the dependent topology view to be presented to the given operator.

Abstract: The present invention relates to a method of rerouting a PVC route on an ATM network by previously defining an alternate route for the PVC route and by switching the PVC route to a previously defined alternate route when a fault occurs in a network element forming the PVC route.

Abstract: A semiconductor laser enabling a higher output without lowering the performance of the laser such as its reliability, that is, a Fabry-Perot type semiconductor laser having, successively grown on a substrate, a first cladding layer of a first conductivity type, an active layer having at least one quantum well layer and at least two barrier layers, and a second cladding layer of a second conductivity type, a pair of facing end faces of said active layer constituting a resonator, wherein an impurity and holes due to the impurity are diffused in at least one region near the end faces of said active layer, and the quantum well layer and the barrier layers constituting said active layer are made mixed-crystals.