Abstract: In a time division multiple access mobile wireless telecommunication system, a base station has a plurality of frequencies with their priority order previously registered in a memory, selects, upon starting the operation, the frequency having the highest priority from frequencies not used by other wireless telecommunication systems, and initiates communications at the selected frequency. The base station also transmits a pilot signal representative of the priority for using the selected frequency in order to prevent other wireless telecommunication system from interrupting to use the frequency.

Abstract: A multi-media server for treating multi-media information including video and voice information and a communication system including the multi-media server are provided. The multi-media server is suitable for the application and the system architecture for the multi-media information, a mail system utilizing animation and an application for editing a document.

Abstract: A process for producing acetic acid comprising reacting ethylene and oxygen in the presence of a catalyst comprising metallic Pd and at least one member selected from the group consisting of heteropoly-acids and their salts, or in the presence of a catalyst comprising metallic Pd, at least one member selected from the group consisting of heteropoly-acids and their salts and at least one member selected from the group consisting of metallic elements of Groups 11, 14, 15 and 16 of the Long-Form Periodic Table.

Abstract: An automatic equalizer is capable of updating tap coefficients and constituted to vary the frequency at which to update the tap coefficients depending on the magnitude thereof. There are provided a plurality of ways to vary the frequency at which to update the tap coefficients. One way is to divide the taps into two groups, one group having its tap coefficients updated at a relatively high frequency, the other group having its tap coefficients updated at a relatively low frequency. Another way is to vary the frequency at which to update the tap frequency based on the result of suitably judging the magnitude thereof.

Abstract: A correlation transmission coder or a correlation code transmission system whereby the correlation transmission coder generates a transmission signal to be sent on a transmission line, the transmission signal being determined, as with a partial response class 4 signal, by using already-transmitted data strings and data being transmitted by adding a specified length of frame synchronization pattern in each constant frame period. What is characteristic of this invention is the provision of which reset or preset in each frame period registers that are used commonly by a transmission system and a precoder that makes up the coder. Another characteristic is the provision of which inserts, immediately before the frame synchronization pattern, internal data that is added to the transmission data by the transmission system and the precoder.

Abstract: A timing clock extraction circuit for extracting from a multilevel code signal, transmitted at a predetermined baud rate, in which cross timings with a reference level are generated at frequency timings several times the baud rate, a clock pulse train at the baud rate and obtaining discriminative data from the multilevel code signal in accordance with the extracted clock pulse train.

Abstract: A lower fatty acid ester such as ethyl acetate or ethyl acrylate is prepared by a process in which a lower fatty acid such as acetic acid or acrylic acid is reacted with a lower olefin such as ethylene by using as solid catalyst a heteropoly-acid or its salt. The esterification is carried out in gaseous phase.

Abstract: The invention is directed to an ignition coil for use in an internal combustion engine. The ignition coil includes a center core which has a plurality of core members aligned. At least one permanent magnet is disposed between the core members. A primary winding and a secondary winding are mounting on the center core and permanent magnet. The permanent magnet is enclosed in the primary winding at least. An outer core having at least one core member is disposed around the primary winding and secondary winding. One end of the outer core is connected to one end of the center core, wheras the other end of the outer core is connected to the other end of the center core.

Abstract: A speech signal is analyzed for each frame so that it is separated into spectral envelope information and excitation information, and the excitation information is expressed by a plurality of pulses. Judgement is conducted as to whether the current frame is a voiced frame immediately after the transition from an unvoiced frame, a voiced frame continuative from a voiced frame or an unvoiced frame, and excitation pulses are generated in accordance with the judgement result. In case of a continuing voiced frame, the excitation pulse position of the current voiced frame is determined based on the pitch period with respect to the excitation pulse position of the immediately preceding voiced frame so that the excitation pulse train is generated at a position approximated to the determined position.

Abstract: A signal processing method and system in a receiving apparatus including a receiving equalizer circuit are provided for extracting transmission data from a received signal inputted via a transmission path every transmission frame having a predetermined synchronization pattern and transmission data. A phase error is detected from the received signal extracted in synchronism with a sampling signal in the receiving equalizer circuit. The frequency of the sampling signal is controlled until the phase error becomes minimum. In parallel, it is detected whether the frame synchronization pattern is present in the received signal in a predetermined interval or not. When the presence of the frame synchronization pattern is not detected after the phase has been stabilized by frequency control of the sampling signal, the sampling phase of the received signal is judged to be in the quasi-convergence state. Then the frequency of the sampling signal is forcibly changed largely.

Abstract: Domed and cylindrical shell structures of interwoven lightweight strips of metal or other lightweight materials, and method of constructing such shell structures. Several weaving patterns are disclosed which provide requisite flexibility of woven strips to enable the weave to be formed into a desired configuration such as a domed roof or a cylindrical silo. These shells have high strength-to-weight ratios and inherently attenuate seismic vibrations to provide protection against earthquakes. The strips are interwoven on a flat surface at ground level and then hoisted into place. Modules of portions of the shell can be prefabricated and joined to other like modules at the job site to form the complete shell.

Abstract: In a speech coding method and system in which a speech signal is analyzed in each frame so as to be separated into spectral envelope information and excitation information and both of the information are coded, each frame is divided into a plurality of sub-frames and a pulse of the maximum-amplitude is extracted from pulses within each sub-frame in order to provide large-amplitude pulses from each frame, thereby greatly reducing the number of pulse extracting processing steps.

Abstract: A liquid-containing component containing a dissolved or dispersed solid ingredient is frozen to provide ice like granules which are then mixed or kneaded with flour to form a uniform blend of the flour and granules in a macroscopically homogeneous system. The system is further mixed or kneaded and the granules melted to cause melting of the flour and thereby produce a homogeneous mixture of the flour and liquid-containing component.

Abstract: A polymer composition or concentrate comprising:(A) an olefinic copolymer,(B) a copolymer of an olefin with a (meth)acrylate,(C) a poly(meth)acrylate, and(D) a surfactant, which is poor solvent for both components (A) and (C), which acts as a solubilizer or phase-stabilizer for the components (A) and (C), and which in combination with component (B), which has surface active properties, functions as a phase-stabilizer. The composition has a relatively low viscosity even at high polymer contents and is useful as a lubricating oil additive which improves the viscosity index of a lubricating oil formulation.

Abstract: A system for and a method of multiplexing digital speech signals corresponding to speech signals inputted from a plurality of terminals, the digital speech signals including a plurality of speech unit signals, in which a weighted priority signal is produced for the speech unit signal of each of the speech signals from the terminals, an assignement signal is produced from the priority signals indicative of which of the speech unit signals be selected for transmission in the form of a train of multiplexed speech unit signals in a cyclic transmission period of time, so that the speech unit signals are multiplexed on the basis of the assignment signal.

Abstract: A method is disclosed for preparing excavated soil to render it suitable as hardened backfill by mixing with the soil a cementitious substance and ice particles, the ice particles being used in lieu of the water normally required to react with the cementitious substance.

Abstract: A speech coding system includes apparatus for generating a variable threshold dependent upon the power of an input speech signal, and a comparator for comparing the power of the input speech signal with the variable threshold value to generate a discriminating signal for discriminating between a period when a speech continues and a period when the speech pauses, to change the coding operation for the input speech signal in accordance with the level of the discriminating signal, thereby forming voiced and unvoiced frames independently of each other.

Abstract: A speech signal transmission system for transmitting coded speech signals with variable bit rate is disclosed, which comprises a coder for analyzing digital speech signals inputted in a one-frame period and transforming them into coded data comprising a plurality of parameters indicating characteristics of the inputted speech signals, a data arranging circuit for arranging the coded data outputted by the coder in the order of the priority in the decoding of the speech signals and outputting them, and a bit stealer allowing a series of coded data outputted successively by the data arranging circuit to pass through only in a period of time determined by the transmission bit rate. The bit arranging circuit outputs the parameters in the order of the priority of decomposes each of them in unit of a bit and outputs them with decreasing priority. Parameters or bits of low priority are omitted by the bit stealer, depending on the transmission bit rate.

Abstract: A pulse generating circuit is provided for generating a pulse having a time width synchronized with an input pulse and corresponding to a reference voltage. The circuit is particularly designed not to be affected by parasitic capacitance. A circuit for charging one electrode of an integrating circuit with a constant current is controlled by turning on or off a switch in response to the input pulse. The other electrode of the integrating capacitor is connected with a reference voltage source by driving a switch in response to a pulse having a pulse width which contains the time period of the input pulse and which is wider than the input pulse. A comparator is provided for comparing the potential at one electrode of the integrating capacitor and ground potential. A desired pulse is generated by a logic circuit which is receives both the output of the comparator and the input pulse.