Abstract: A data processing method for obtaining data indicating the period between pulses comprises measuring the interval between the subject pulses, separately generating time pulses of a prescribed period, measuring the time between the most recent subject pulse and the most recent time pulse, outputting the interval between the subject pulses as the pulse period data if it is longer than the time between the most recent subject pulse and the most recent time pulse and otherwise outputting the latter time as the pulse period data. The data obtained in this way more precisely indicates the actual pulse period in cases where noise pulses occur between subject pulses.

Abstract: A dot pattern processing apparatus includes a storage device for storing dot patterns, a magnification arrangement for magnifying the dot patterns stored in the storage device in a lateral direction without magnifying a vertical dot string consisting entirely of blank dots in the lateral direction, while magnifying a vertical dot string including at least one black dot in the lateral direction, and an output arrangement for outputting the dot patterns stored in the storage device or the dot patterns magnified by the magnification arrangement, and in which a blank portion between adjacent patterns is not magnified, even dot patterns are magnified, and hence a beautiful result of output can be obtained.

Abstract: A method for manufacturing a screw rotor for use in a hydraulic machine which has a pair of rotors engageable with each other to compress fluid, pump fluid or expand fluid. The screw rotor includes a shaft, a screw body including a number of stacked thin plates bonded with one another, and a cavity provided in the screw body and formed by openings of the stacked thin plates. The method of manufacturing a screw rotor includes the steps of preparing a number of thin plates having at least one opening, stacking the thin plates in such a manner that a through hole of the thin plate receives a shaft, filling a cavity formed by the openings of the stacked thin plates with powdery pressure medium, and bonding the stacked thin plates with one another by diffusion bonding under a hot isostatic pressing process.

Abstract: A recording apparatus such as an ink jet printer or bubble jet printer consists of a recording head to record by discharging an ink to a recording paper; a conveying device to convey the recording paper; an instructing device to instruct to convey the recording paper in the direction opposite to that upon recording; and a conveyance controller to control the conveying device so as to inhibit the backward conveyance of the recording paper in the case where the recorded ink is not fixed yet when the recording paper is conveyed backward in response to the instruction of the backward conveyance. The discrimination regarding whether the recorded ink is not fixed yet is performed on the basis of the elapsed time after the recording by using a timer.

Abstract: A semiconductor memory device has a plurality of divided memory blocks, each of which has its X-system addresses assigned so that an equal number of word lines in a plurality of sets of memory mats and sense amplifiers may be selected. Each memory block is equipped with a plurality of internal voltage drop circuits for generating a supply voltage from the outside into the operating voltages of the sense amplifiers.

Abstract: A multiplexer circuit comprises a plurality of circuits for decoding digital timing signals, and a plurality of circuits for passing an one of the analogue voltage potentials to an output terminal corresponding to the decoded result of the decoding circuits, and preventing the passing circuits from passing more than one signal simultaneously.

Abstract: A screw rotor for use in a hydraulic machine which has a pair of rotors engageable with each other to compress fluid, pump fluid or expand fluid, and a method of manufacturing such a screw rotor. The screw rotor comprises a shaft, a screw body including a number of stacked thin plates bonded with one another, and a cavity provided in the screw body and formed by openings of the stacked thin plates. The method of manufacturing a screw rotor comprises the steps of preparing a number of thin plates having at least one opening, stacking the thin plates in such a manner that a through hole of the thin plate receives a shaft, filling a cavity formed by the openings of the stacked thin plates with powdery pressure medium, and bonding the stacked thin plates with one another by diffusion bonding under a hot isostatic pressing process.

Abstract: A method for evaluating the life of a connection between members including the steps of extracting parameters defining the shearing strain of a predetermined model representing the connection thereby to calculate the values of plural shearing strains of the connection, calculating the equivalent strain amplitude corresponding to thermal fatigue stress for each of the values of the plural shearing strains defining the relationship between the shearing strain and the equivalent strain amplitude, formulating a life evaluation criterion equation expressed using the equivalent strain amplitude, calculating, for the connection, the equivalent strain amplitude corresponding to each of the shearing strains actually measured using the equation, and substituting the equivalent strain amplitude for the life evaluation criterion equation to acquire the life of the connection.

Abstract: A document processing apparatus includes a keyboard for inputting character data having a normal character height character and data having a character height extending over a plurality of lines, a memory for storing the character data input by keyboard, a printer for outputting a character pattern corresponding to the character data stored in the memory in units of lines, and a central processing unit for, when character patterns of one line are output by the printer, causing the printer to directly output a character pattern corresponding to the character data having the normal character height and to output part of the character pattern corresponding to the character data having the character height extending over the plurality of lines.

Abstract: A refractory is laid on a base plate provided with a connector for the connection of a power source apparatus. Many electrode pins are inserted through the refractory and fixed in the base plate at their lower ends. The base plate is made of a steel upper plate member and a copper lower plate member overlapped one on the other and the lower end portions of the many electrode pins are electrically connected to the lower plate member through the upper plate member. When a DC electric arc furnace is operated, the electric current supplied to the connector reaches all the electrode pins mainly through the lower plate member in the base plate and flows from there homogeneously through the pins into the molten metal pool in the furnace.

Abstract: A spindle control apparatuses for a disk player allows a quick search of recorded data on a disk carrying a plurality of types of data that should be read out at different reading velocities. A spindle servo loop is rendered open in response to a command and a normal rotational velocity of the disk necessary to read out recorded data at a specific address is computed. Then the disk's rotational velocity is accelerated or decelerated in a single step until it coincides with the designated rotational velocity and the servo loop is closed when these velocities coincide with each other. This allows quick and stable locking of the spindle servo loop during the searching period, so that the searching velocity is raised considerably.

Abstract: A package holding structure comprises a pair of linear guide members (11), secured on the package (2) along the respective edges thereof opposite to each other, and a pair of support members (10) for receiving the respective guide members (11), secured at one end thereof on the backboard (3) in a cantilever manner while projected vertically therefrom and having a connector housing (15) at the base end thereof for receiving a connector (14) on the package. The housing (15) has positioning apertures (13) to be fitted to contact pins (12) projected from the backboard (3).

Abstract: The invention relates to internal-reforming fuel cells. They are each constructed of plural unit cells stacked one over another. Each unit cell is formed of a cathode, an electrolyte plate, an anode and a separator. Each unit cell also includes a generating zone formed by the cathode, anode and electrolyte plate; a reforming zone for reforming fuel gas; a fuel gas flow channel communicating with a fuel gas inlet and a fuel gas outlet and including a divided fuel gas flow channel for the unit cell; and an oxidant gas flow channel communicating with an oxidant gas inlet and an oxidant gas outlet and including a divided oxidant gas flow channel for the unit cell. The reforming zone is arranged in the fuel gas flow channel while the generating zone is arranged in contact with the fuel gas flow channel and the oxidant gas flow channel at a position downstream of the reforming zone while the fuel gas and oxidant gas are maintained separated from each other.

Abstract: A semiconductor device of the present invention is disclosed which includes a semiconductor device of a predetermined conductivity type having a predetermined impurity concentration, a source/drain area formed on the upper surface portion of the semiconductor substrate and a guard ring formed around the source/drain area and having the same conductivity as that of the semiconductor substrate. A gate oxide film is formed on the source/drain area and guard ring and an interconnection layer, such as polysilicon, is formed on the gate oxide film. The guard ring has its impurity concentration set to be higher than that of the semiconductor substrate. The guard ring per se has a portion intersecting with the interconnection layer through a thicker portion of a gate oxide film disposed over the intersecting portion of the guard ring, and a remaining portion, the intersecting portion of the guard ring being higher in impurity concentration than the remaining portion of the guard ring.

Abstract: A motor control system controls a steering apparatus with an electric motor. A command signal is generated in accordance with a torsion torque of the steering apparatus and the rotational direction and torque of the electric motor is controlled in accordance with the command signal. The system includes a vehicle speed sensor, a hysteresis circuit for changing a hysteresis width in accordance with an output from the vehicle speed sensor, and a phase compensation designating section responsive to an output from the torsion torque sensor supplied via the hysteresis circuit for outputting a command signal corresponding to a change rate of the torsion torque, so that the rotation direction and torque of the electric motor is controlled in accordance with the command signal. The hysteresis circuit makes large the hysteresis width during a high speed running of a vehicle to avoid influence of external disturbance due to vibrations from roads.

Abstract: A method of manufacturing a fine-particle colloid or a magnetic fluid of a metal nitride through reaction between a metal carbonyl and a nitride-bearing compound, a two-step reaction is performed, comprising a first-step reaction of synthesizing a nitrogen-bearing metal carbonyl which is a precursor substance and a second-step reaction of synthesizing metal nitride from said precursor substance. A step of eliminating unreacted metal carbonyl is provided between the two-step reaction. By repeatedly causing the series of reactions, a fine-particle colloid or a magnetic fluid of the metal nitride is manufactured. For the magnetic fluid, the solvent may be replaced in response to a particular purpose of use of application after production.

Abstract: The present invention provides a carrier jig for use in processing, transporting and stocking a wafer-like material used in manufacture processes of semiconductor products, and a semiconductor production system using the carrier jig. The carrier jig of the present invention comprises a holder for holding and storing therein one wafer, for example, and a container box for loading therein the holder. A mechanism for transferring wafers by the use of the carrier jig is provided in each process, with the result the period of production time can be shortened and the production speed can be enhanced.

Abstract: A mechanism for insertion and withdrawal of a printed board unit (20) to and from a shelf (10), by which the printed board is inserted in the shelf with less force and locked therein after the completion of the operation, an the complete insertion can be confirmed by a click noise and a mark. The mechanism includes a lock arm (26), which is fixed to the printed board unit (20) at the base portion thereof and has a flexible tip, a lever (25) pivoted to the printed board unit (20) and provided with a cam surface (30) for driving the lock arm (26) for insertion and withdrawal of the printed board unit (20), and an aperture (17) formed on the shelf (10) and engageable with the lock arm (26) when the same is in a fixed position. The lever (25) occupies predetermined angular positions, both when the printed board unit (20) is completely engaged to a connector and when the printed board unit is withdrawn therefrom.

Abstract: A compound containing nitrogen is introduced into a solvent in which a metal carbonyl and a surface active agent are dissolved, and the solution is heated to generate a particle colloid or a magnetic fluid of a metal nitride. A particle colloid of a metal nitride with an even grain size, a good dispersibilitgy and a good fluidity, and a magnetic fluid thereof with an excellent properties are obtained with convenience and at high efficiency.

Abstract: The present invention provides a carrier jig for use in processing, transporting and stocking a wafer-like material used in manufacture processes of semiconductor products, and a semiconductor production system using the carrier jig. The carrier jig of the present invention comprises a holder for holding and storing therein one wafer, for example, and a container box for loading therein the holder. A mechanism for transferring wafers by the use of the carrier jig is provided in each process, with the result the period of production time can be shortened and the production speed can be enhanced.