Abstract: A disk array controller has a function of relocating a plurality of data blocks stored in a disk array. The controller includes a read unit which reads data blocks to be relocated from the disk array, a determining unit which determines whether an error has occurred in the to-be-relocated data block read by the read unit, a write unit which writes the to-be-relocated data block read by the read unit in a relocating destination position on the disk array which corresponds to the to-be-relocated data block if the determining unit determines that the error has not occurred in the to-be-relocated data block, and a unit which sets error information with respect to the relocating destination position if the determining unit determines that the error has occurred in the to-be-relocated data block, the error information causing occurrence of an error in response to read access of the relocating destination position.

Abstract: There is disclosed a RAID control apparatus which copies data to a copying-target disk drive from the first or second disk drive by use of a rebuilding function in a disk array system including the first and second disk drives. The RAID control apparatus replaces a disk drive to be copied with the second disk drive, when the first disk drive fails during execution of a copying operation using the first disk drive as the disk drive to be copied.

Abstract: An array controller includes a maximum address storage unit and a data restoration unit. The maximum address storage unit stores a maximum address, which is a maximum one of the addresses of data-written areas of the disk drives of a disk array. If one of the disk drives malfunctions, the data restoration unit generates data corresponding to the malfunctioning disk drive on the basis of the data stored in the first areas of the remaining disk drives and arranges the generated data in a second area. The second area corresponds to the first areas and is part of the new disk drive used in place of the malfunctioning disk drive. The first area is an area defined between the start address of the remaining disk drives and the maximum address stored in the maximum address storage unit.

Abstract: If one of the disk drives of a disk array malfunctions, the read unit of an array controller reads data from the remaining disks, so as to restore the data of the malfunctioning disk drive to the original state and provided this restored data in a new disk drive. If a media error occurs during this data read operation, an error data write unit writes media error-causing information, which causes a media error when the area of the new disk drive corresponding to the media error is read. The media error-causing information is written, for example, in the area of the new disk drive.

Abstract: A process for the preparation of a phenylhydrazine or an inorganic acid salt thereof of the formula (1): wherein X is a hydrogen or halogen atom; Y is a halogen atom; and W is a hydrogen atom or —ZR in which Z is an oxygen or sulfur atom, and R is a hydrogen atom, an alkyl group, a haloalkyl group, and so on, by the hydrolysis of a phenylhydrazine derivative of the formula (2): where X, Y and W are the same as defined above, and the Q groups are a hydrogen atom, an ammonium group or an alkali metal atom in the presence of water and an inorganic acid, in which the concentration of the inorganic acid is at least 6 moles per 1 kg of water in a reaction system.

Abstract: A synthetic image print system has an additional image extraction function for extracting additional images based on extraction criteria. An additional image extraction program, the data of each additional image, and an additional image feature information file listing features of each additional image are stored on storage. Of all additional images, the additional images with the feature information corresponding with the extraction criteria are extracted. The features of a photographed image, a search keyword inputted by a user, the user profile information and the like are used as the extraction criteria.

Abstract: A high-precision image pickup apparatus in which the degradation of optical performance due to unwanted orders of diffracted light is electrically minimized at high speed and with high accuracy. The apparatus has an image-forming optical system (1), an image pickup device (3), and a signal processing device (4) for converting signals obtained into a displayable image signal. The image-forming optical system (1) includes a diffraction surface.

Abstract: A method and apparatus for controlling an engine for models include setting an injection period for fuel in accordance with an amount of fuel per cycle required for operating of the engine; judging whether the injection period is below a minimum injection period controllable in a fuel injection apparatus of the engine, selecting an intermittent injection data corresponding to the injection period when the injection period is below the minimum injection period; and intermittently injecting fuel into the fuel injection apparatus for a controllable injection period at an injection timing based on the selected intermittent injection data.

Abstract: The invention provides a zoom lens system which, albeit comprising an extremely reduced number of lenses, is well corrected for various aberrations. The zoom lens system comprises at least a negative lens group G1 and a first positive lens group G2. A second positive lens group G3 is located between the first positive lens group G1 and an image side of the system, said group G3 including at least one surface having diffractive action substantially rotationally symmetric with respect to an optical axis of the system. For zooming, at least a spacing between the negative lens group G1 and the first positive lens group G2 is changed. The system further satisfies a specific condition for making correction for longitudinal chromatic aberration, and a specific condition for making correction for chromatic aberration of magnification.

Abstract: A fuel injection system having no fuel leakage and a high speed response includes both an outlet opening of a fuel supply passage 44 and an inlet opening 59 of an injection passage 56 are provided facing to a communication space 54 formed on the one end face of a valve box 51. A diaphragm 62 seals the communicating space of a valve box 51. A ridge 64 of the diaphragm 62 shuts the supply passage and injection passage. A valve body 70 driven by a solenoid coil 65 is combined with the diaphragm 62. The valve body 70 is pressed by a plate spring 71. While a current is not supplied to the solenoid coil 65, the plate spring 71 presses the valve body 70, and the ridge 64 of the diaphragm 62 closes the inlet opening 59 of the injection passage 56. Fuel is not injected. While a current is supplied to the solenoid coil 65, the valve body 70 is attracted toward a magnetic core 66.

Abstract: Air pressure which is proportional to the rotation speed of an engine is generated in a crank chamber 2 during operation. The crank chamber 2 is communicated to a fuel tank 10 having sealed structure with interposition of a check valve 25. Air pressure which is proportional to the rotation speed of the engine is applied to fuel in the fuel tank 10. The fuel tank 10 is communicated to the fuel injection system 30. The fuel injection system 30 opens its injection orifice only when power is supplied to a solenoid coil and injects supplied fuel into a combustion chamber. Because air pressure which is proportional to the rotation speed of the engine is applied to fuel, through each fuel injection time is constant, fuel which is proportional to the rotation speed can be injected. In particular, a shorter injection time is sufficient for high rotation speed operation in comparison with conventional fuel injection time, thereby power consumption of the fuel injection system 30 is reduced.

Abstract: An eyepiece system for use with binoculars, etc. which comprises, in order from a side of an observer's eye, a first convex lens element having a strongly convex surface on a side of an objective lens, and a cemented doublet lens component which consists of a second biconvex lens element and a third negative or negative meniscus lens element. This eyepiece system is configured to have a wide apparent field angle and favorably corrected aberrations by selecting an adequate value for a distance as measured from a front focal point of the eyepiece system to a vertex on a surface of the first lens element which is located on the side of the observer's eye.

Abstract: An optical element which has a rear principal point located before a center of its thickness or a front focal point located after the center of its thickness and at least one surface which functions as a lens by utilizing the diffraction phenomenon.Further, a focal point detecting optical system using a projector optical element or light emitting optical element which has a surface functioning as a lens by utilizing the diffraction phenomenon.

Abstract: An imaging lens system consisting of a front lens unit which comprises a negative lens component disposed on the image side and has a positive refractive power, and a rear lens unit which is composed of a positive lens component: a distance ffb as measured from an object side surface of the rear lens unit to a front focal point of the rear lens unit, a distance D as measured from an exit pupil of the front lens unit to an object side surface of the rear lens unit, and refractive powers of the front lens unit and the rear lens unit being adequately defined for the imaging lens system.

Abstract: A DC--DC boost converter for directly driving a capacitive load employs four switches for cyclically commuting the connection configuration of an energy storing inductor. First and second switches are driven at a relatively high frequency and provide an impulsive charge path of the inductor by connecting one or the other end to a power supply rail. Third and fourth switches are driven in phase opposition to each other at a relatively low frequency and provide a discharge path from one and the other end of the inductor, respectively, toward an output node of the circuit to which the capacitive load is connected.

Abstract: A process is disclosed for producing an amine by carrying out a reductive amination of a cyclic ketone or by carrying out a reduction of an imino derivative of a cyclic ketone to the corresponding amine which process is characterized in using a cobalt catalyst containing a carbonate of an alkaline earth metal and/or lanthanum oxide.

Abstract: A thermosetting resin composition comprising (A) a dibasic acid modified epoxy (meth)acrylate resin obtained by reacting a bromine-containing epoxy resin with a dibasic acid of 4 or more carbon atoms followed by further reacting with acrylic acid or methacrylic acid, (B) a thermosetting resin having an unsaturated group, the unsaturated group being copolymerizable with the resin (A), and (C) a polymerizable monomer; and an electrical laminate produced by using the thermosetting resin composition are disclosed.

Abstract: A resin composition for cement, which comprises a polymer obtained by the emulsion polymerization of a dicyclopentadiene derivative represented by general formula, ##STR1## an unsaturated epoxy ester (B), an .alpha.,.beta.-unsaturated monocarboxylic acid (C), and an ethylenically unsaturated monomer (D) copolymerizable with the above three components (A), (B), and (C), and use of said composition by blending same into cement.

Abstract: A concrete-protective material containing a dicyclpentadiene derivative represented by formula, ##STR1## an ethylenically unsaturated monomer having a hydroxyl group, a polyvalent isocyanate compound having not less than 2 isocyanate groups, and other ethylenically unsaturated monomer.

Abstract: A glass tube bending apparatus according to the present invention includes a drum for bending a heated/softened glass tube into a circular shape, a first driving device, coupled to the drum, for moving the drum straight, and a second driving device, coupled to the drum, for rotating the drum in a direction, and a control for independently controlling the rotating speed and the moving speed of the drum. According to this apparatus, the operation speeds of rotating and moving of the drum can be controlled independently. Therefore, distortion of glass tubes can be decreased, and thermal bending of tubes can be performed with high precision. Further, various sorts of glass tubes can be treated. Still further, since the first driving device and the second driving device are operated in synchronism, the precision of the thermal bending of glass tubes is enhanced.