Abstract: A pattern forming material contains a siloxane polymer having the general formula: ##STR1## [wherein R, R' and R" are the same or different and are respectively one member selected from hydrogen, an alkyl group or a phenyl group; X is one member selected from fluorine, chlorine, bromine, iodine and a --CH.sub.2 Y group (wherein Y is one member selected from chlorine, fluorine, bromine, iodine, an acryloyloxy group, a methacryloyloxy group, and a cinnamoyloxy group); and l, m and n are respectively 0 or a positive integer, l and m not being simultaneously 0]. The material has a high sensitivity to high-energy radiation, a high contrast, and an excellent resistance to reactive ion etching under oxygen gas. The material is conveniently used as a negative resist for forming a submicron pattern having a high aspect ratio.

Abstract: In an apparatus for receiving a burst signal intensity-modulated by a signal obtained by Manchester-code converting each code of an input signal into a pair of codes, the received burst signal is converted by a partial response circuit into an AC signal and then AC-amplified. From the received burst signal is extracted a timing signal of the same frequency as the clock frequency of the Manchester-coded signal. In a decision circuit, the AC-amplified output is decided by the timing signal, through using a decision level close to zero, at the timing of each of former and latter codes of the Manchester-coded pair codes. A coding rule violation is detected in a plurality of successive decision output codes to detect a reception abnormality such as asynchronism and a signal collision. The decision output is decided at the timing of the latter one of the Manchester-coded pair codes, thereby regenerating transmitted information.

Abstract: A clock signal in a TDMA burst signal is recovered by using the frequency and phase information extracted by taking a moving average of plural bursts received previously from the same earth station. The system has memory storage for storing frequency and/or phase information of a moving average of plural bursts received previously, and clock signal necessary to demodulate the present burst is recovered by using output of the memory storage. Thus, the synchronized clock signal for demodulating the received burst is obtained in a short time, or even a clock recovery bits in a burst may be removed. The establishment of the synchronized clock signal is indicated by a synchronization circuit which provides the establishment signal for each burst after receiving a predetermined plurality of bursts from the same earth station.

Abstract: In radio communication system using angular modulation, the presence and quantity of cochannel interference is detected. According to the invention, when desired signal and undesired signal are received simultaneously, an envelope of the received IF output signal involves low frequency spectrum component similar to that of fading and high frequency spectrum component with several KHz. The low frequency spectrum component and high frequency spectrum component are then calculated, and the interference ratio D/U is obtained by processing said components.

Abstract: An adhesive filler apparatus is disclosed comprising an injector and a support portion, the injector comprising a pressure buffer tube made of elastic material and a check valve adjacent one end of the pressure buffer tube, the support portion comprising a base member and a projection. The adhesive filler apparatus disclosed is used as follows: An adhesive is fed through a hose connected to a pump, etc. in the pressure buffer tube, causing the tube to swell. The hose is disconnected from the injector, causing the check valve to close the end of the tube. The fed injector is coupled to the support portion fixed on the crack of a concrete structure, etc., whereupon the projection on the support portion presses the check valve to open the end of the fed tube, thereby allowing the adhesive in the tube to be filled in the crack by gradual and continuous contraction of the elastic tube.

Abstract: An adhesive filler apparatus is disclosed comprising an injector and a support portion, the injector comprising a pressure buffer tube made of an elastic material and check valves adjacent both ends of the pressure buffer tube, the support portion comprising a base member and a projection. The adhesive filler apparatus disclosed is used as follows: A hose connected to a pump is coupled to one end of the pressure buffer tube so that the nozzle of the hose presses the check valve to clear its closure, allowing an adhesive to be fed in the pressure buffer tube. The hose is disconnected from the fed and swollen tube, causing the check valve to close the end of the tube. The fed injector is coupled to the support portion fixed on the crack developed in a concrete structure, etc., whereupon the projection on the support portion presses the check valve to open the end of the tube, thereby allowing the adhesive in the tube to be filled in the crack by gradual and continuous contraction of the elastic tube.

Abstract: In an aperture for a charged particle beam exposure apparatus, the outside edges of fine wires are located inside the individual sides of an opening formed in a conductive sheet so that an opening smaller than the opening of the conductive sheet is defined by the fine wires.

Abstract: A gray level signal processing method determines whether an image signal derived from an original document belongs to the character image area which needs high resolution or the continuous-tone image area which needs gray level reproduction such as for photographs, and quantizes the signal in a quantization method suitable for the image area to which the signal belongs. The process comprises the steps: (a) picture image is divided into blocks each composed of m-by-n picture elements; (b) the maximum optical density level (P.sub.max) and the minimum optical density level (P.sub.min) are detected in each block; (c) the difference value (P.sub..DELTA. =.vertline.P.sub.max -P.sub.min .vertline.) between the maximum and minimum optical density levels is calculated; (d) the image area to which the block belongs is determined according to the difference value (P.sub..DELTA.

Abstract: A device is disclosed for supplying a glass raw material gas in the form of the mixed gas consisting of the glass raw material gas and the carrier gas to a vapor deposition device for producing a preform of an optical fiber, the supply device including a secondary raw material container having a pressurizable interior and provided adjacent to a main raw material container. The bottoms, or areas near the bottoms, of the two containers are interconnected via a pipe including at a mid portion thereof a switching valve and a device for adjusting the flow rate of the raw material liquid between the two containers. Liquid level detectors are provided in one or both containers to maintain the constant volume of the liquid raw material so as to provide a constant state inside the main raw material container. The operation of this device can easily be entirely automated.

Abstract: A magnetic disc type memory device swinging actuator is constituted by a plurality of a driving assemblies juxtaposed on a stationary shaft and extending in the opposite direction. Each driving assembly include a head arm, a magnetic head mounted on one end of the head arm, a coil supporting member for supporting a flat coil and extending in the opposite direction to the head arm, and first and second permanent magnets spaced from the coil in an axial direction of the shaft and also spaced in a direction of arrangement of the flat coil. The first and second permanent magnets are magnetized in the axial direction of the shaft so that poles of opposite polarities confront the flat coil. The first and second permanent magnets are mounted on a common yoke and the flat coils are disposed in a closed magnetic flux path including the first and second permanent magnets and the yokes.

Abstract: .gamma.-Fe.sub.2 O.sub.3 film with at least one additive selected from the group consisting of Pd, Au, Pt, Rh, Ag, Ru, Ir, and Os, especially Os are disclosed. Reduction from .alpha.-Fe.sub.2 O.sub.3 to Fe.sub.3 O.sub.4 is accelerated by additive Os to achieve a uniform reduction and increase the ratio of magnetic phase in the film. .gamma.-Fe.sub.2 O.sub.3 film medium with Os improved saturation magnetization and increased coercive force in proportion to amount of additive Os. Application of an external field to said film introduces magnetic anisotropy into said film, therefore said film medium improves coercive force and squareness of hysteresis loop by the introduction of anisotropy. .gamma.-Fe.sub.2 O.sub.3 crystal grain is prepared by additive Os to obtain fine grain. The resultant .gamma.-Fe.sub.2 O.sub.3 film medium a decreased noise level.

Abstract: A thin film which becomes a membrane is formed over one major surface of a substrate by a plasma deposition process utilizing microwave electron cyclotron resonance. The substrate is then removed, other than a portion of the substrate which remains as a frame, so as to form a membrane structure. A dense and high quality membrane is formed at a low temperature and the internal stress of the membrane controlled by varying the conditions under which the plasma deposition process is carried out and by heat treating the thin film after its formation.

Abstract: A semiconductor integrated circuit in which layers such as an field isolation region, a gate electrode, interlayer insulating films and interconnection lines are formed by the combined use of a lift-off process and an ECR plasma deposition process. According to the present invention, even if vertical dimensions of patterns of the respective layers are large as compared with their lateral dimensions, the upper surfaces of the respective layers can be planarized, permitting the fabrication of an LSI of high packing density, high operating speed and high reliability which is free from shorting and breakage of the interconnection lines.

Abstract: The invention provides a method for resolving a data packet collision in a local network where a plurality of nodes which respectively comprise processors and terminal equipment utilize a single transmission line in accordance with a contention system.A contention phase is initiated unless a collision occurs. When a collision occurs, a resolution phase is initiated. The nodes which have been performing transmission immediately stop transmission. They discriminate their positions on the transmission line before a time interval (2.times.maximum transmission delay time interval) elapses from the start of transmission. If no signal is received by a given node from the left, the given node is regarded as the leftmost node among the conflicting nodes. The leftmost node immediately starts transmitting a packet. Other nodes except for the leftmost node stop retransmitting the packets. The nodes which have performed retransmission are stopped until the resolution phase is completed.

Abstract: Plastic optical fibers comprising as a core component a polymer predominantly containing methyl methacrylate and as a cladding component a copolymer lower in the refractive index than the core component, the plastics optical fibers being characterized by performing conjugate spinning with use of the cladding component which is vinylidene fluoride-tetrafluorethylene copolymer having incorporated therein 5 to 50% by weight of a polymer predominantly containing methyl methacrylate.

Abstract: A monolithic integrated circuit device is formed on a substrate and made up of an AC negative feedback circuit for a high frequency amplifier circuit. The AC negative feedback circuit includes a semiconductor impedance element and connected to an external terminal on the substrate, and variable control means for adjusting an amount of the AC feedback of the high frequency amplifier circuit. As the semiconductor impedance element is used the junction capacitance of a diode under negative bias, diffusion capacitance between the base and emitter electrodes or between the base and collector electrodes of a transistor or a differentiated resistance of a diode.

Abstract: The horizontal sync signal contained in the video signal from a video apparatus sometimes undergoes phase jump, resulting in failure of multiplexing of audio and video signals based on the horizontal sync signal. A sync signal switching circuit is adapted to produce a modified sync signal by switching the sync signal to a local sync signal upon occurrence of the phase jump, thereby assuring the multiplexing of audio and video signals.

Abstract: A resist material of positive type having a high sensitivity, a high resolving power and an excellent adhesion property to substrates, which comprises a copolymer of a fluoroalkyl acrylate having the general formula: ##STR1## wherein R.sub.1 is methyl group, ethyl group, a halogen-substituted methyl or ethyl group, a halogen atom or hydrogen atom, R.sub.2 is a bivalent hydrocarbon group having 1 to 6 carbon atoms, and R.sub.f is a fluoroalkyl group having 1 to 15 carbon atoms, with an acrylic comonomer selected from the group consisting of a glycidyl acrylate, an acrylic acid, an acrylamide and an .alpha.-cyanoacrylate.

Abstract: A video/audio transmission system for sending video and audio information from video and audio files of a center to a subscriber through a subscriber's junction line is disclosed in which at least one subcenter having a video/audio buffer memory, an exchange and the like is disposed near to the subscriber to reduce the number of repeaters arranged on the subscribers junction line, and in which the video and audio information is transmitted from the center to the sub-center in a time division multiplex fashion to reduce the number of transmission lines between the center and the sub-center.

Abstract: An adaptive predictive coding (APC) and adaptive kit allocation (ABA) system which splits a speech signal into a plurality of bands, subjecting each signal to adaptive predictive coding and adaptively changes quantization characteristics in the adaptive predictive coding so that quantization noise may become small. An average amplitude (not average power) of the signal of each band is detected for each temporal sub-interval, and a quantization bit number and a quantization step size are adaptively determined from the average amplitude for each sub-interval, thereby permitting reduction of the quantity of hardware used.