Abstract: A light source unit comprising a lamp and a reflector for reflecting rays of light emitted by a light emitting element of the lamp and for focusing the reflected rays of light. In order to focus on a predetermined focal point the rays of light emitted by the light emitting element of the lamp and refracted by a cross-sectional shape of the lamp, the reflector has a concave reflective shape formed so as to satisfy a predetermined calculation expression.

Abstract: FIG. 1 shows an electronic program guide unique to viewer A grouped from an electronic program guide based on electronic program guide data; the program type is set in an (a) column and the display mode of each program is set in a (b) column. In FIG. 1, a news program is displayed in text and a music program is displayed in an icon of musical notes on a music sheet. A sports program is displayed in an icon of a bat and a ball. Since the music program and the sports program are thus displayed in such icon images of reminding the viewer of the program contents, the viewer A can quickly determine the program contents visually.

Abstract: The present invention was achieved in order to provide a program list display system for television broadcasting to display an appropriate and useful program list even if unreceived program data is present, comprising a program data receiving device to receive program data of television broadcasts, a program list making device to make a program list based on the program data received by the program data receiving device, and a display driving device to display the program list made by the program list making device on a display, which has an unreceived slot image formation device to form an unreceived slot image in an unreceived program slot which is a display area of the program list corresponding to an unreceived program whose program data has not been received so as to make a program list.

Abstract: There is provided a method of making a high-melting metal powder which has high purity and excellent formability and, particularly, of a metal powder of spherical particles made of Ta, Ru, etc. having a higher melting point than iron. There is also provided a target of high-melting metal or its alloy, which is made by the sintering under pressure of these powders and which has high purity and a low oxygen concentration and shows high density and a fine and uniform structure. A powder metal material mainly composed of a high-melting metal material is introduced into a thermal plasma into which hydrogen gas has been introduced, thereby to accomplish refining and spheroidizing. Further, an obtained powder is pressed under pressure by hot isostatic pressing, etc.

Abstract: A semiconductor device of the present invention is provided with a power device which has a semiconductor substrate having a first main surface and a second main surface that are opposed to each other and an insulating gate structure on the first main surface side, wherein a main current flows between the first main surface and the second main surface, that is to say, is provided with an insulating gate type MOS transistor structure wherein the thickness (t1) of the semiconductor substrate is no less than 50 &mgr;m and no greater than 250 &mgr;m and a low ON voltage and a high withstanding capacity against breakdown are implemented in the first main surface. Thereby, a low ON voltage, the maintaining of the withstanding capacity against breakdown and the reduction of a switching loss on the high voltage side can be implemented.

Abstract: A semiconductor device of the present invention has an insulating gate type field effect transistor portion having an n-type emitter region (3) and an n− silicon substrate (1), which are opposed to each other sandwiching a p-type body region (2), as well as a gate electrode (5a) which is opposed to p-type body region (2) sandwiching a gate insulating film (4a), and also has a stabilizing plate (5b). This stabilizing plate (5b) is made of a conductor or a semiconductor, is opposed to n− silicon substrate (1) sandwiching an insulating film (4, 4b) for a plate, and forms together with n− silicon substrate (1), a capacitor. This stabilizing plate capacitor formed between stabilizing plate (5b) and n− silicon substrate (1) has a capacitance greater than that of the gate-drain capacitor formed between gate electrode (5a) and n− silicon substrate (1).

Abstract: A method of mounting a volume from a tape medium on a tape drive apparatus. The method reads a bar-code indicating the volume from a tape cartridge, attaches the tape cartridge to a tape drive, and detects the current track position on the basis of a longitudinal track. The method then determines whether a beginning volume label or a last used area volume label is nearer to the current track position, reads the nearer volume label from the tape medium, confirms the volume by comparing the nearer volume label with the bar-code, and mounts the volume onto the tape drive.

Abstract: There is provided a method of making a high-melting metal powder which has high purity and excellent formability and, particularly, of a metal powder of spherical particles made of Ta, Ru, etc. having a higher melting point than iron. There is also provided a target of high-melting metal or its alloy, which is made by the sintering under pressure of these powders and which has high purity and a low oxygen concentration and shows high density and a fine and uniform structure. A powder metal material mainly composed of a high-melting metal material is introduced into a thermal plasma into which hydrogen gas has been introduced, thereby to accomplish refining and spheroidizing. Further, an obtained powder is pressed under pressure by hot isostatic pressing, etc.

Abstract: A signal is reproduced from a recording medium. The reproduced signal is sampled in response to a clock signal to get a sampling-resultant signal. A transversal filter includes a delay line having taps and delaying the sampling-resultant signal, multipliers for multiplying only alternate ones among signals appearing at the taps by tap coefficients to get multiplication results, and an adder for adding the multiplication results into a filtering-resultant signal. A temporary decision device operates for calculating a temporary decision value of the filtering-resultant signal according to a temporary decision procedure, for calculating a difference between the temporary decision value of the filtering-resultant signal and an actual value thereof, and for generating an error signal in response to the calculated difference. The tap coefficients used in the transversal filter are controlled in response to the error signal and the reproduced signal to minimize the error signal.

Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.

Abstract: There are provided an image generation system and information storage medium which can generate an image of a simple object with reduced processing load, the brightness of the simple object being variable according to the amount of light sent from a light source and received by the simple object The image generation system comprises a light-source simple processing section (114) for performing a light-source simple processing relative to the simple object.

Abstract: Provided is a polyoxymethylene resin composition which comprises (I) 100 parts by weight of a polyoxymethylene polymer and (II) 1-200 parts by weight of a thermoplastic elastomer having a main dispersion peak temperature of −30° C. to +50° C. in a tan &dgr; curve obtained by the measurement of viscoelasticity and having a number average molecular weight of 10,000-500,000. Since moldings obtained from this resin composition simultaneously satisfy both the good frictional wear characteristics and the high vibration damping performances, they can be suitably employed for the uses such as vibration-proof sliding components in the fields of precision machines, OA appliances and automobiles.

Abstract: The present invention relates to a polyacetal ABA type block copolymer having a liquid hydrogenated polybutadiene block hydroxyalkylated at both end having a specific monomer structure in the main chain and a polyacetal resin composition comprising the block copolymer and a specific polymer compound or an inorganic filler. The block copolymer and the resin composition can satisfy 4 characteristics necessary for materials for large-diameter gears, i.e. (1) high cycle capability (high productivity), (2) high roundness, (3) distinguished dimensional stability and (4) distinguished durability at the same time and provide useful materials for large-diameter gears having a pitch circle diameter of 60 mm or more.

Abstract: A printed circuit board which has been soldered in a molten solder bath is cooled immediately thereafter with a cooling liquid at a rate of at least 10° C./second. Thermal effects of high-temperature solder during soldering are suppressed, and the metal matrix of the solder is refined, resulting in soldered connection of increased strength.

Abstract: The rotary machine 1 is composed of the rotor 3 having magnetic poles and the stator 4 having the stator yoke portion 41 constituting the iron core tooth portion 42 wound by the stator winding 5 and the flux flow path of the magnetic poles. The rotor 3 is composed of a metallic material having ferromagnetic parts and non-magnetic parts as a member and has a magnetic barrier area composed of the slit portion 72 for blocking the bypath magnetic path in the periphery of the rotor and the non-magnetic parts 75. The rotary machine that produced torque can be increased sufficiently and the mechanical strength during high-speed running is improved and an electrical vehicle using it.

Abstract: The present invention provides a paper-laminated metal sheet having a structure in which at least one sheet of paper is laminated on at least one side of a metal plate via a pressure sensitive adhesive agent or an adhesive agent layer, and a protective layer is formed on a top surface of the paper-laminated side. With this structure, the paper-laminated metal sheet can be processed without wetting the paper with water, while thereby preventing the paper from being torn. In addition, the aesthetic appearance derived from the paper is kept for a long period of time. Due to high strength and processability derived from the metal base material, and high aesthetic appearance unbelievable for a metal plate derived from the paper, the paper-laminated metal sheet is valuable in various applications as a novel material.

Abstract: A direct-current power supply unit is provided for applying forward bias to a pn junction between an n emitter region and a p base region. A switch is provided between the direct-current power supply unit and a first metal electrode layer or a second metal electrode layer. A switch control circuit is connected to the switch. A gate control circuit is connected to the switch control circuit. Accordingly, ON voltage of an IGBT can be reduced while latch-up is avoided.

Abstract: A permanent magnet material is prepared by cooling with a chill roll a molten alloy containing R wherein R is at least one rare earth element inclusive of Y, Fe or Fe and Co, and B. The chill roll has a plurality of circumferentially extending grooves in a circumferential surface, the distance between two adjacent ones of the grooves at least in a region with which the molten alloy comes in contact being 100 to 300 .mu.m on average in an arbitrary cross section containing a roll axis. Permanent magnet material of stable performance is obtained since the variation of cooling rate caused by a change in the circumferential speed of the chill roll is small. The variation of cooling rate is small even when it is desired to change the thickness of the magnet by altering the circumferential speed. The equalized groove pitch results in a minimized variation in crystal grain diameter.

Abstract: An alumina-zirconia sintered body comprising 92 to 35% by weight of aluminum oxide and 8 to 65% by weight of zirconium oxide having mainly tetragonal system, and 0.2 to 5 parts by weight of silicon oxide per 100 parts by weight of the total of aluminum oxide and zirconium oxide, and having a relative density of 95% or more, has improved wear resistance and suitable for use in an impact grinder.

Abstract: A process for producing a stabilized oxymethylene copolymer, which comprises subjecting a crude oxymethylene copolymer to terminal stabilization in an extruder (A) having a terminal-stabilizing zone and a vacuum zone for volatile components removal to obtain a terminal-stabilized oxymethylene copolymer, separately melt-kneading a polyoxymethylene and a stabilizer and/or an additive in other extruder (B), feeding the resulting melt-kneading mixture in a molten state into a section of the extruder (A) following the vacuum zone for volatile components removal so that the proportions of the polyoxymethylene to be fed from the extruder (B) and the crude oxymethylene copolymer to be subjected to terminal stabilization in the extruder (A) become 1:3 to 1:45 by weight ratio, and kneading the polyoxymethylene, the stabilizer and/or the additive and the terminal-stabilized oxymethylene copolymer.