Abstract: A fluid machinery comprises a helical mechanism provided with a cylinder, a roller eccentrically disposed inside the cylinder and formed with a helical groove and a blade member fitted in the helical groove, an electric motor unit connected to the helical mechanism through a rotational shaft, the roller, which eccentrically rotates, having an engagement portion engaged with a crank portion of the rotational shaft, and a pair of bearings disposed to both axial end portions of the cylinder so as to support the rotational shaft. The engagement portion of the roller and the bearings are formed with through holes for ventilation, respectively.

Abstract: A fluid machinery comprises a helical mechanism provided with a cylinder, a roller eccentrically disposed inside the cylinder and formed with a helical groove and a blade member fitted in the helical groove, an electric motor unit connected to the helical mechanism through a rotational shaft, the roller, which eccentrically rotates, having an engagement portion engaged with a crank portion of the rotational shaft, and a pair of bearings disposed to both axial end portions of the cylinder so as to support the rotational shaft. The engagement portion of the roller and the bearings are formed with through holes for ventilation, respectively.

Abstract: A helical blade type compressor is comprising a stationary cylindrical body, a closed-ended cylinder eccentrically arranged surrounding the cylindrical body, a helical compression section including a helical blade serving to divide the free space between the closed-ended cylinder and the cylindrical body into a plurality of compression chambers arranged in the axial direction of the cylindrical body, and a rotary shaft serving to eccentrically rotate the cylinder surrounding the cylindrical body, wherein a helical blade groove is formed on the circumferential surface of the cylindrical body and the helical blade is engaged with the helical groove such that an object fluid is moved in the axial direction of the cylindrical body so as to be compressed in accordance with the eccentric rotation of the cylinder.

Abstract: An image processing apparatus improves picture quality and moreover, makes resolution higher, wherein second image data is generated by combining a current image having first image data with an image which is temporality different from the current image, so that an image having high resolution and having less aliasing can be generated as compared with the current image.

Abstract: In an image processing apparatus, an input image is synthesized with a stored image supplied from a storage unit and having been shifted so that the positions of the pixels in the image areas of the input image and of the stored image, associated with a telop, will coincide. The level distribution of the pixel values of the input image is maintained in the telop.

Abstract: A fluid compressor comprising a helical blade type compression mechanism that includes a cylinder, a roller arranged inside the cylinder and a helical blade interposed between the roller and the cylinder. The blade, the roller and the cylinder are formed of materials whose coefficients of thermal expansion satisfy relationships: Blade>Roller>Cylinder. According to this invention, pressure release can be easily performed in the case where the liquid flows back or under a low-temperature condition as at the time of actuation. In addition, the compression performance can be improved under a high-temperature condition during operation.

Abstract: An apparatus for converting a first picture comprising pixels into a second picture comprising pixels is provided. The second picture is converted by executing on the first picture an adaptive process that determines prediction values of the second picture by using a number of pixel values of the first picture as prediction taps and a number of prediction coefficients that are adapted to the first picture. The apparatus comprises a prediction taps forming circuit for forming a number of prediction taps from the first picture and a picture obtained by the adaptive process and an executing circuit for executing the adaptive process by using the formed number of prediction taps and a number of prediction coefficients that are adapted to the prediction taps. The apparatus further comprises a class taps forming circuit for forming a number of class taps from the first picture and the picture obtained by the adaptive process.

Abstract: A helical blade type compressor is comprising a stationary cylinder, a roller eccentrically arranged within the cylinder, a helical compression section including a helical blade serving to divide the free space between the roller and the cylinder into a plurality of compression chambers arranged in the axial direction of the cylinder, and a rotary shaft serving to eccentrically rotate the roller within the cylinder, wherein a helical blade groove is formed on the inner circumferential surface of the cylinder and the helical blade is engaged with the helical groove such that an object fluid is moved in the axial direction of the cylinder so as to be compressed in accordance with the eccentric rotation of the roller.

Abstract: A memory device for storing data of the present invention comprises memory means having a plurality of memory banks, write selecting means for selecting 1 memory bank from among the plurality of memory banks and for writing the data therein, read out selecting means for selecting other two or more memory banks from among the plurality of memory banks and for reading out the data therefrom, and data selecting means for selecting the data generated from the read out selecting means. An image data consisting of a desired number of pixels in the horizontal direction and vertical direction respectively is obtained without using a line memory for temporarily storing the image data of required number of lines.

Abstract: In a helical compressor, a helical compression unit is accommodated in the case. The compression unit has a cylinder, a roller eccentrically disposed in the cylinder and a helical blade disposed between an inner surface of the cylinder and the roller for separately forming a plurality of compression chambers therebetween along an axial direction of the roller. A motor unit is accommodated in the case and is operatively connected to the helical compression unit through a rotating shaft for eccentrically rotating the roller in the cylinder through the rotating shaft. According to the rotation of the roller, compressive fluid sucked into a lower compression chamber is moved along an axial direction of the rotating shaft while being sequentially compressed. The helical compression unit and the motor unit is arranged so that the helical compression unit and the motor unit are partially overlapped to each other along the axial direction.

Abstract: A fluid compressor comprises a sealing case, an oil reservoir formed to an inner bottom portion of the sealing case, in an installed state, for storing an lubricating oil and a compression mechanism having a helical blade structure housed in the sealing case. The compression mechanism comprises a cylinder, a rotating member arranged in the cylinder so as to perform eccentric motion and a helical blade interposed between the rotating member and the cylinder for defining a plurality of partitioned compression chambers. The fluid compressor further comprises an electric motor unit housed inside the sealing casing in operative connection to the compression mechanism. The compression mechanism has a vertical structure in which the fluid is compressed and transferred in a perpendicular direction in the installed state.

Abstract: A fluid compressor has a sealed case, an electric motor section, and a compression section. Both sections are provided in the sealed case, with their axes extending substantially horizontally. The sealed case is filled with lubricant. At the start of the compressor, the rotational speed N of the electric motor section is gradually increased, but maintained at least once at a prescribed value for a predetermined period. At the stop of the compressor, the rotational speed N is gradually decreased, but maintained at least once at a prescribed value for a predetermined period.

Abstract: A fluid compressor includes a piston which has a vertical longitudinal axis. A plurality of working chambers are provided between a cylinder and the piston, and are constituted by upper working chambers and lower working chambers which separated from each other by a center portion of the piston. Fluid is sucked in the lowermost one of the upper working chambers and the uppermost one of the lower working chambers, respectively, and is compressed while being conveyed. The diameter .phi. D3 of a lower shaft portion of the piston and the diameter .phi. D4 of an upper shaft portion of the piston have a relationship .phi. D3 <.phi. D4 in order to apply an upward thrust force to the piston.

Abstract: A fluid compressor having a rotational force transmitting mechanism. The mechanism comprises an Oldam portion, an Oldam ring and a second cylinder gearing. The Oldam portion is integral with a piston. The Oldam ring has a first pair of key grooves and a second pair of key grooves. The key grooves of the first pair extend at right angles to those of the second pair. The second cylinder bearing is fitted in the cylinder and has two projections fitted in the key grooves of the second pair. The Oldam ring is made of silicon nitride ceramic.

Abstract: A fluid compressor has a piston, the axis of which is vertical. The dimensions of the parts of the compressor are determined such that an upward thrust force acting on the piston is substantially equal to or slightly greater than the total weight of rotational parts including the piston and a cylinder. Specifically, a groove formed in the piston has a pitch decreasing gradually from a lower part to an upper part of the piston, and a diameter (.PHI.D1) of a lower shaft portion of the piston, a diameter (.PHI.D2) of a upper shaft portion of the piston, and an inside diameter (.PHI.Dc) of the cylinder have a relationship, (D1.sup.2 +D2.sup.2)>Dc.sup.2.

Abstract: A fluid compressor having a cylinder, columnar rotating body, first and second spiral grooves, first and second recessed grooves, first and second spiral blades slidable in a radial direction of the columnar rotating body and fitted in the first and second spiral grooves. A drive means is provided for causing a rotational movement of the cylinder and the columnar rotating body synchronously with each other. Stoppers extend from the cylinder into first and second recessed grooves whose wall portions are located adjacent to a respective first turn of the second and first spiral grooves and advanced by 180.degree. from a respective second and first spiral grooves. The first and second stoppers engage respective end portions of the spiral blades during the rotational movements of the cylinder and the columnar rotating body.

Abstract: A fluid compressor comprises a cylinder and a columnar rotating body synchronously rotated by a drive means, The rotational movement of the cylinder and the columnar rotating body is supported by a pair of roller bearing assemblies. A clearance is provided between the roller bearing assemblies and bearing members to allow fluid from the compression chambers to pass into an interior of the casing of the compressor. With the arrangement of roller bearing assemblies at the ends of cylinder and columnar rotational body combinations, a large diameter of the cylinder is possible and thus high compression efficiency of the fluid compressor is achieved.

Abstract: There is provided a fluid compressor having a horizontal rotation axis. An oil reservoir for a lubrication oil is provided within a sealed casing. A cylinder having both end opening portions rotatably supported by bearings is housed within the casing. A rotor piston is eccentrically supported within the cylinder. A helical blade is wound around the outer periphery of the piston such that it can project from and retreat in the outer periphery of the piston. The cylinder and the piston are coupled by an Oldham mechanism. A gas is taken in a compression chamber defined by the cylinder, piston and blade, and it is compressed. The compressor is provided with a pump member, e.g. a trochoid pump, actuated by the rotation of the piston. The lubrication oil is sucked from the oil reservoir and supplied to slide portions.

Abstract: A thermoplastic resin composition comprising 100 parts by weight of a mixture of 10 to 85% by weight of a rubber-reinforced styrene resin, 5 to 50% by weight of a saturated polyester resin and 10 to 70% by weight of at least one copolymer selected from the group consisting of an .alpha.-methylstyrene copolymer and a maleimide copolymer, and 0.2 to 50 parts by weight of (D) an epoxy group-containing olefinic copolymer, wherein a content of the rubbery polymer in the composition is from 5 to 25% by weight.The above thermoplastic resin composition is excellent in sharpness and also in heat resistance, chemical resistance and impact resistance.

Abstract: A fluid compressor including a sealed case having an oil bank in which oil is held, a cylinder arranged in the sealed case, a rotation body eccentrically arranged in the cylinder, a main shaft and a sub-shaft formed at each of axial end portions of the rotation body, a spiral groove formed on a periphery thereof such that a pitch of the spiral groove gradually decreases from the sub-shaft side to the main shaft side, a spiral blade engaged with the groove such as to be able to project therefrom or retreat therein, a main bearing and a sub-bearing for eccentrically supporting the cylinder and the rotation body, and a suction hole provided in the rotation body for allowing an operation fluid having a low pressure before compression to flow from the main shaft side to the sub-shaft side so as to introduce the fluid into an inner space of the cylinder, the cylinder and the rotation body rotated relatively with each other so as to transport the operation fluid from the sub-shaft side to the main shaft side for com