摘要:
A magneto-optical recording medium for MSR reproduction of a high signal quality wherein both faces of a land and a groove are used as recording tracks is disclosed. A magneto-optical recording medium wherein both of a land portion and a groove portion on a substrate are used as recording and reproduction tracks while laser light having passed through an objective lens is illuminated on the recording and reproduction tracks is configured that a ratio Wg/Wl between a track width (Wg) of the groove portion and a track width (Wl) of the land portion is equal to or higher than 0.65 but equal to or lower than 0.85, and, where the wavelength of the laser light is represented by λ, the numerical aperture of the objective lens by NA and the refractive index of the substrate by n, the groove distance Gp is equal to or greater than 1.0×λ/NA but equal to or smaller than 1.2×λ/NA and besides the depth D of the groove is equal to or greater than λ/11 n but equal to or smaller than λ/8 n.
摘要:
An automobile exterior component, having good balance between impact resistance and fluidity and being excellent in coating heat resistance and rigidity, which is prepared by performing urethane coating or melamine coating on a molded article obtained by molding a resin composition which comprises a polyamide resin (A); a grafted polymer (B) prepared by graft polymerizing an aromatic vinyl monomer and a vinyl cyanide monomer in the presence of a diene rubber; an unsaturated carboxylic acid-modified copolymer (C) which has a reduced viscosity of 0.2 to 0.5 dl/g and is prepared by polymerizing an unsaturated carboxylic acid monomer, an aromatic vinyl monomer and a vinyl cyanide monomer; a copolymer (D) prepared by polymerizing an aromatic vinyl monomer and a vinyl cyanide monomer; and talc, wherein the amount ratio of (A), (B), (C) and (D) is in a specific range.
摘要:
Illumination light emanated from a laser illumination light source is reflected by a semi-transparent mirror arranged between first and second objective lenses, and illuminates an object through the first objective lens. Reflected light from the object is incident to the photoelectric conversion device through the first objective lens, the semi-transparent mirror, and the second objective lens, and forms an image of the object. The image is captured by a image-taking plane of the photoelectric conversion device tilted relative to the image plane. The second objective lens is telecentric at the image side. The image-taking plane of the photoelectric conversion device is tilted relative to the image plane. Therefore, almost all diffracted light rays from on-axis and off-axis portion of the image-taking plane among all incident light to the image-taking plane are reflected not to enter the second objective lens.
摘要:
A polypropylene resin composition comprising: (a) 50 to 90% by weight of polypropylene, (b) 50 to 10% by weight of an ethylene-.alpha.-olefin copolymer elastomer having a Mooney viscosity (ML 1+4 (100.degree. C.)) of 10 to 100, (c) 0.5 to 10 parts by weight per 100 parts by weight of the total of the amounts of the components (a) and (b) of a linear olefinic polymer containing hydroxyl group which is liquid at room temperature, and (d) 0.5 to 15 parts by weight per 100 parts by weight of the total of the amounts of the components (a) and (b) of a linear olefinic polymer having a melting point of about 70.degree. to about 90.degree. C. and a number-average molecular weight of 1500 to 6000 and containing hydroxyl group or carbonyl group; and a protective strip for automobiles using the polypropylene resin composition are disclosed. Coating immediately after degreasing is made possible and excellent property for coating can be provided by using the polypropylene resin composition.
摘要:
In a semiconductor memory device comprising row decoders, word line drivers, word lines, memory cells, a d.c. power source for a write mode, and a d.c. power source for a read mode, one of the word line drivers comprises a first circuit for supplying a write voltage from the d.c. power source for the write mode to one of the word lines selected by the row decoders when predetermined data is written into one of the memory cells connected to the selected word line and a second circuit for supplying a current from the selected word line to the d.c. power source for the read mode when the predetermined data is to be verified after the predetermined data has been written into one of the memory cells; the second circuit comprises a depletion type transistor and a one-directional conductive element connected in parallel to the depletion type transistor.
摘要:
A device for manually controlling movement of a pickup arm in an automatic record player, comprising: a manually movable manipulation member; a detecting unit including at least one light-emitting element and at least two light-receiving elements disposed to receive the beam of light emitted from the light-emitting element to detect the amount and direction of a movement of the manipulation member and to generate a corresponding signal; control circuitry receiving this signal to generate an output corresponding to the direction and the amount of the movement of the manipulation member; and a driving unit for causing linear parallel movement of the pickup arm radially of a record disk and actuated by the output of the control circuitry to move this pickup arm in a direction and amount of movement corresponding to those of the manipulation member. This device assures easy and free control of the movement of the pickup arm in a desired direction and amount by manipulation of a single manipulation member, and improves the life of the detecting unit due to non-mechanical contact mechanism of this unit.
摘要:
According to one embodiment, a protective relaying device includes a phase difference calculating unit configured to calculate a phase difference between a phase obtained by shifting a phase of first current data by 180°, and a phase of second current data, a setting unit configured to calculate a target value of elimination of a sampling synchronization error caused by a difference between a transmission delay time of up-transmission, and a transmission delay time of down-transmission on the basis of the phase difference, and to set the calculated target value, and a sampling synchronization control unit configured to carry out control of sampling synchronization such that a difference between a time TM and a time TF.
摘要:
An actuator includes a base member and an electro-mechanical transducer element including a first electrode, an electro-mechanical transducer film, and a second electrode. Further, the base member includes a thin wall part having a concave shape, the electro-mechanical transducer film is formed in a manner such that a film thickness of the electro-mechanical transducer film is gradually reduced from a center part of the electro-mechanical transducer film to both end parts of the electro-mechanical transducer film in at least one direction crossing a film thickness direction of the electro-mechanical transducer film.
摘要:
A transmission includes a controller being provided with a change-speed stage anticipator. The controller adopts a time, which one of the transmission's gear-mechanism selectors requires in shifting a current change-speed stage to another change-speed stage, as a pre-shift time for selecting the latter change-speed stage. The change-speed stage anticipator operates the one of the gear-mechanism selectors while adopting a temporary change-speed stage as a subsequent change-speed stage when the temporary change-speed stage, which is estimated from a state of vehicle after the pre-shift time, the state of vehicle being relevant to each element of an anticipated change-speed stage group that is made up of one or more of the change-speed stages that can be selected by the one of the gear-mechanism selectors being set on one of the transmission's input shafts that is disconnected from a power source, coincides with an anticipated change-speed stage that corresponds to the pre-shift time.
摘要:
A three-dimensional data display apparatus is provided with a screen display processing section that generates a display screen with a structure arranged in a virtual space of a three-dimensional orthogonal coordinate system based on structure information stored in a data storage section and displays the display screen on a monitor, a grid setting-updating section that sets a grid in the virtual space, an operation information acquiring section that acquires operation information from a mouse, an input point position calculation section that calculates coordinates of an input point in the virtual space, calculates a moving destination of the input point based on the operation information, selects coordinates nearest to the moving destination of the input point from any one of the coordinates of each grid lattice based on the grid in the virtual space, the coordinates of a boundary of the structure and the coordinates of the point of intersection between the boundary of the structure and the grid and updates the coordinates of the input point and an input point display processing section that displays the input point at the updated coordinates.