Abstract: A trapezoidal partitioning method and apparatus for partitioning a figure of an optical waveguide approximated by a polygon into trapezoids wherein a prescribed linear axis is set, and the figure of the optical waveguide is partitioned by a group of straight lines passing through the vertices and lying perpendicular to the linear axis. Points of intersection at which two adjacent straight lines intersect the outline of the optical waveguide are adopted as vertices of one trapezoid, and vertex data is output as a set for each trapezoid. Further, the figure of the optical waveguide approximated by a polygon is specified by data of a sequence of vertices.

Abstract: An optical isolator has a low-profile construction. Two rod-like permanent magnets are on two sides of a Faraday element in parallel to an optical axis. The two permanent magnets are sandwiched and fixed between two ferromagnetic frames each having a light path hole therein. The ferromagnetic frames are each provided with a protrusion for guiding the magnetic flux generated by the permanent magnets to the Faraday element.

Abstract: A mobile communication system intended to early detect unlawful mobile station. User information about accumulated call account is totaled by the network and the mobile station individually so as to be subjected to a comparison to found an unlawful mobile station.

Abstract: A 14K gold alloy includes by weight percentages about 58.5 to 58.8% gold, 12.8 to 14.4% silver, 22.9 to 24.8% copper, 3.5 to 4.1% zinc and 0.2 to 0.5% cobalt. The alloy exhibits a relatively large uniform, fine grain size and may be repetitively hardened and softened as desired. The brightness of the alloy is exceptional and the color, which is quite distinctive among 14K gold alloys, is similar to rich colored 18K gold alloys.

Abstract: A roll over vent valve comprising:a housing having a fluid inlet and a fluid outlet, the latter comprising a substantially elongated slit-like outlet aperture of the housing bounded by a valve seating. There is furthermore provided a float member located in the housing and axially displaceable within the housing between the inlet and the outlet; an elongated flexible closure membrane strip anchored at one end thereof to an end of the float member adjacent the outlet and at a portion thereof offset with respect to the outlet; spring biassing means located within the housing and bearing on the float member so as to spring bias it in the direction of the outlet; whereby the spring biassing together with buoyancy forces acting on the float member tend to press the membrane strip into sealing engagement with the outlet aperture whilst gravity forces acting on the float member tend to displace the float member away from the outlet so as to progressively detach the strip from sealing engagement with the outlet.

Abstract: A waste collection system comprises a waste receptacle (1) and a collection vehicle (2) suitable for the mechanical emptying thereof. The waste receptacle (1) is suspended from a supporting frame (3) by way of a swivel bearing (22) so as to swivel around a horizontal axis (5), and the collection vehicle (2) includes a catch basin (13) into which the waste receptacle is emptied when it is swiveled out of its upright position, when the collection vehicle drives past said receptacle and guides the catch basin under the waste receptacle. The swivel bearing (22) is allowed to freely swing the waste receptacle through its upright position, and the collection vehicle features a tipping mechanism for the waste receptacle (1), which includes a grip element (10) that takes hold of a projection or the rim (11) of the inclined waste receptacle (1) and turns it upside down.

Abstract: A multimedia teleconference system serving sound data to an existing telephone terminal as well as multimedia terminals, and makes the existing telephone terminal join in a multimedia telephone conference by the use of sound data. The multimedia teleconference system includes a first multimedia terminal for generating various kinds of media data including at least, sound data. The teleconference system further including a plurality of second multimedia terminals for setting connections corresponding to each of the various kinds of media data, a telephone terminal for receiving only sound data, and a switch for receiving the various kinds of media-data sent from the first multimedia terminal and distinguishing a connection for the sound data and extracting only the sound data transferring on the distinguished connection to send the extracted sound data to the telephone terminal.

Abstract: A CPU, a main memory, a network interface section and a control section are connected to an internal bus. The control section is connected to a storage device to control read-out and write-in processes relative to the storage device. The network interface section receives an access request to the storage device transferred through a network and sends it to the control section through the CPU. The network interface section and the control section are connected to each other by an exclusive line. Data read out of the storage device and data to be written into it is transferred through the exclusive line.

Abstract: In controlling a discrimination level V.sub.1, V.sub.1 is controlled so that discrimination results based on discrimination levels V.sub.1 +.DELTA.V and V.sub.1 -.DELTA.V each become equal to the discrimination result based on the discrimination level V.sub.1. If the discrimination result based on V.sub.1 +.DELTA.V does not agree with the discrimination result based on V.sub.1, V.sub.1 is lowered, and if the discrimination result based on V.sub.1 -.DELTA.V does not agree with the discrimination result based on V.sub.1, V.sub.1 is raised. In controlling a discrimination phase .PHI..sub.1, .PHI..sub.1 is controlled so that discrimination results based on discrimination phases .PHI..sub.1 +.DELTA..PHI. and .PHI..sub.1 -.DELTA..PHI. each become equal to the discrimination result based on the discrimination phase .PHI..sub.1. If the discrimination result based on .PHI..sub.1 +.DELTA..PHI. does not agree with the discrimination result based on .PHI..sub.1, .PHI..sub.

Abstract: The invention provides an optical transmission method and apparatus suitable for use with a terminal station apparatus for an optical communication system for a very long distance of up to several thousands kilometers across an ocean as well as an optical amplification method and apparatus suitable for use with a repeater for an optical communication system. The methods and apparatus are improved in that the excessive loss in an optical amplifier and the variation of the branching ratio are suppressed to suppress the variation of the gain to suppress the polarization dependency of the loss or the gain on a transmission line of the optical communication system. The optical transmission apparatus comprises a depolarized light source for outputting depolarized light, and an external modulator for modulating light from the depolarized light source.

Abstract: A mobile user station periodically searches for a connectable access point and stores the address of a connectable access point that has been found in a master-station management table. When the mobile user station moves from one cell to another under these conditions, the state of communication with the old access point deteriorates. When the state of communication with the old access point deteriorates to such a degree that it becomes necessary for the mobile user station to connect to a new access point, the mobile user station sends a connection request to the access point stored in the master-station management table and performs communication via the new access point. As a result, when connection to a new access point becomes necessary owing to movement of the mobile user station between cells, the changeover between access points can be performed quickly without searching for an access point.

Abstract: A terminal for a maintenance is connected via a local area network (LAN) to a wideband switching equipment. An address such as an IP address is allocated to each of a plurality of wideband switching equipments, and a virtual channel connection for transferring maintenance data to between the plurality of wideband switching equipments. Each control unit of the plurality of wideband switching equipments is provided with a table for registering an address of a connected party to make the address corresponding to an interface unit accommodating a wideband line. The control unit performs control to select whether to transfer the maintenance data to other wideband switching equipment or to the maintenance terminal connected via the LAN with reference to this table.

Abstract: A hub unit has a hub with a nut tightened at an axially inner end which is partly projected from the nut. A tone wheel is secured to the axially inner end of the hub. The tone wheel has an outer cylindrical portion provided around the nut and having magnetic properties changing alteratively in a circumferential direction with a uniform interval. An outer ring is provided, which has an axially inner open end. A cover covers the axially inner open end of the outer ring. The hub unit also has a sensor of a passive type supported by the cover and having a detecting portion facing to the outer periphery of the outer cylindrical portion of the tone wheel.

Abstract: A method for subantral augmentation including the steps of lifting the schneiderian membrane from the antral floor, and placing graft material between the schneiderian membrane and the antral floor, without fracturing the lateral maxillary wall.

Abstract: An error counting circuit is adapted to count a number of code errors of a main signal in an external apparatus which is coupled to an optical transmission path. The error counting circuit includes an error counter which counts error pulses received from the external apparatus and indicative of the number of code errors of the main signal in response to clock pulses having a predetermined period and outputting a counted value for each the predetermined period, and a mechanism for stopping a counting operation of the error counter when a power failure of the external apparatus occurs, so that an erroneous counting operation of the error counter is prevented.

Abstract: A data communication method enables communications between terminals adapted to handle frame structure data having different formats. The terminals are connected via an asynchronous transfer mode (ATM) network in which frame structure data is transmitted in a form of an ATM cell. The terminals include at least a first terminal and a second terminal. The first terminal is adapted to handle data having a super frame (SF) format. The second terminal is adapted to handle data having an extended super frame (ESF) format. A type of frame format of frame structure data to be sent to one of the terminals is distinguished by detecting a synchronization pattern of the frame structure data. The frame structure data is converted when the frame structure data is sent to the one of the terminals so that the converted frame structure data has a type of frame format corresponding to the detected synchronization pattern.

Abstract: For a vehicle having a rear storage compartment which has side walls and a floor area, and wherein access is gained to the storage compartment via a rear opening across which is mounted an upwardly opening tailgate for selectable closing and opening of the rear opening, an expandable storage system having an extendible storage member which includes a floor portion for supporting luggage thereon, the floor portion having front and rear edges and side edges extending therebetween, and a pair of parallel side wall portions connected to the side edges of the floor portion so as to extend transversely upward therefrom, thereby to prevent undesired lateral movement of luggage supported thereon; the storage system also having apparatus for mounting the extendible storage member within the storage compartment such that the pair of side walls have a generally parallel orientation to the side walls of the storage compartment, including apparatus for permitting selectable movement of the extendible storage member along

Abstract: In a picture distribution method and device, a picture supply device is connected to a network and serves to supply prescribed picture sources to plural subscriber terminals through the network. The picture sources can be supplied to any subscriber terminal just when a supply demand for a picture source is made from the subscriber terminal, and a single picture source can be supplied to a large number of subscribers with a simple control operation. The picture supply device includes a first file for storing the picture sources, plural second files for temporarily storing the picture sources, a copying unit for copying any picture source in the first file into the second files, and a read-out unit provided for each second file for reading out the picture source stored in the second file. A transmitting unit is provided for transmitting the output line of the read-out unit to the subscriber circuit connected to the subscriber terminal to transmit the picture source to the subscriber terminal.

Abstract: An IPL requesting processor sends an IPL request to a communication path. The other processors detect the IPL request. When a communication channel is secured between the IPL requesting processor and a management processor that holds IPL management data, the management processor transfers the IPL management data to the IPL requesting processor. The IPL management data include data related to load assignable processors and IPL data. The IPL requesting processor receives statuses from load assignable processors. According to the statuses and the IPL management data, the IPL requesting processor allocates IPL data segments to the load assignable processors and instructs them to provide the allocated IPL data segments. The IPL requesting processor receives the IPL data segments from these processors and stores them, thereby obtaining necessary IPL data.

Abstract: A numerically controlled machining method and a numerically controlled machining system execute numerically controlled machining. An optimum processing tool is selected based on the numerical control orders, and the processing steps are optimized. A numerically controlled machining system is constituted by a numerically controlled processor, controllers and numerically controlled machines. The numerically controlled processor finds production times for machining parts for all the numerical control orders and compares them with a reference value to classify them into a group of special express processes and a group of normal processes. The special express processes pertain to the group of machining methods giving importance to the degree of finish, and the normal processes are divided into a group of machining methods for minimizing the exchange of machining tools or to a group of machining methods of optimizing a drawing number, whichever gives better machining efficiency.