Abstract:
An image processing method for use in an electronic video endoscopy system in which R, G and B surface sequential color signals are obtained from a CCD disposed in the leading end portion of an endoscope. The surface sequential color signals are converted simultaneously wherein memories corresponding to the respective colors are used to thereby obtain synchronous color signals. In the image processing method, the odd and even fields of the CCD are interline transferred sequentially within one field period to thereby obtain the above-mentioned surface sequential color signals, and data for each of horizontal scanning lines are read out alternately from odd and even field data once stored in the above-mentioned respective memories to thereby complete frame data so as to obtain the above-mentioned synchronous color signals.
Abstract:
An information processing apparatus in which instructions are processed one by one conceptually and results thereof are conceptually orderly written into a memory comprises an instruction control circuit capable of decoding M instructions and reading operands in parallel, N (N.gtoreq.M) execution circuits capable of executing a plurality of instructions mutually in parallel, a detection circuit for determining whether all of M execution circuits of the N execution circuits required by the M instructions decoded by the instruction control circuit are vacant or not, and a reserve circuit for reserving the execution of the M decoded instruction while the detection fails to detect sufficient vacancy.
Abstract:
An improved method of preparing a frictional material is disclosed wherein a magnetic material is mixed in a preselected proportion with a polymeric or resinous frictional substance, the mixture while in an external magnetic field of a predetermined orientation being formed to yield the frictional material acquiring a frictional anisotropy.
Abstract:
A discharge coating apparatus comprises an assembly for applying a vibrational motion in the longitudinal direction of an electrode while applying a voltage pulse in synchronization with the vibration to cause electrical discharge between the surface of a workpiece and the electrode and the formation of a coating layer on the workpiece of the material of the electrode due to the heat produced by the electrical discharge. An additional motion is applied to the electrode to cause the electrode to undergo reciprocal travel towards and away from the suirface of the workpiece at an angle relative thereto. The additional motion can be a rotational motion. The electrode can be formed with a concave portion at its tip or with an axial bore so that only an annulus of the electrode contacts the workpiece. The additional motion can be a skipping movement by utilizing a skipping mechanism consisting of an elastic memebr.
Abstract:
A traveling-wire electroerosion method and apparatus in which the cutting feed rate is cyclically increased and decreased in a prescribed manner. In a first step of the method, the cutting feed is effected along one portion of a commanded feed path at a maximum rate by a certain first extent such that the traveling wire span between the guide members bends backwards, thus deviating beyond a certain degree from the straight-line path established between the guide members. In a second step, the cutting feed is effected along another portion of the feed path immediately following that one portion at a minimum rate and by a certain small extent such that the bent traveling wire span comes into alignment with the straight-line wire travel path. A control unit is provided which operates a numerical controller to repeat the two-step cycle and may be operable also to act on a flushing medium supply unit, a wire-tension unit and a power supply unit to minimize the rate-reduced time period or distance of feed while maintaining the width of the cut slot or kerf materially unvaried throughout the process.
Abstract:
A catheter or fiberscope for the inspection of an intracardiac area or the like is proposed which has a flexible tube and a balloon mounted on its end. The flexible tube is divided into four passageways, i.e. two fluid passageways and an illumination light transmission line and an image transmission line. A flush of a physiological saline solution is spouted from one fluid passageway outside of the balloon to form a visual field without interfering natural movement of the area to be inspected. A catheter for dissolving a thrombus is also proposed which has a porous tube, instead of a balloon, at its end portion.
Abstract:
An EDM circuit arrangement incorporating a minimum-impedance electrical conductor assembly in a tubular form between an EDM pulse generator and a machining gap, the assembly having a first group of conductors connected between one terminal of the pulse generator and a tool electrode to conduct the machining pulses in one direction and a second group of conductors connected between the other terminal of the pulse generator to conduct the machining pulses in the opposite direction. An electrically nonconductive member contouring the tubular form and having these conductors mounted therein in mutually insulating and generally parallel and equally spaced relationship in an endless row, framing the tubular form, between its outer and surfaces and generally concentric therewith is provided. The conductors are arranged in such a manner that each of the conductors in the first group is axially aligned proximate with a conductor of the other group in the endless row.
Abstract:
A method of plating a pattern of metal (e.g. copper or nickel) on a dielectric surface, i.e. surface of a dielectric material such as a synthetic resin or ceramic. The method comprises the preliminary step of masklessly treating the dielectric surface to selectively activate preselected areas thereof so that the dielectric surface in contact with a priming solution becomes catalytic, and thereby receptive to electroless metal deposition, selectively at those areas. The treated dielectric surface is contacted with an electroless plating solution to allow metal therefrom to auto-reductively deposit selectively at those catalized areas, thereby forming the pattern of metal desired on the dielectric surface.
Abstract:
A wire electrode cutting apparatus for use in a wire-cut electric discharge machine mounted between a supply section for the wire electrode and a pulling section therefor, and comprising a device for applying a constant tensile force to the wire electrode and for sensing that the constant tensile force has been applied thereto, and a power supply for applying an electric current to the wire electrode to heat the same when a predetermined tensile force has been applied thereto.
Abstract:
A CNC process for displacing a movable member along a path on an intricate surface in a three-dimensional coordinate system is disclosed in which the surface is divided into a plurality of elementary characteristic regions each individually definable as one of different geometrical categories such as toroidal, spherical, cylindrical and planar surfaces. The process comprises establishing a general equation for each of these categories and storing the established general equations into a memory unit for a computer. Data required to adapt each of the stored general equations to a corresponding one of the characteristic regions in the three-dimensional coordinate system are inputted into the computer to reduce the general equations to their respective specific equations in which no more than three coordinates are variable. A sequence of incremental two-dimensional positions defined in the system by first and second coordinates thereof are inputted into the computer to allow it to compute, for each position on the path, the value of the third coordinate from the first and second coordinates and the specific equations, thereby determining the path along which the member is moved.