Abstract: The Centralized Management System utilizing a Bus Interface Unit comprises a Computer (4z) installing an address Bus (4a), data Bus (4b), and control Bus (4c), a First-Level Station (4Q1) communicating with the Computer (4z) as the First-Level Station (4Q1) is connected to the buses (4a, 4b, 4c) of the Computer (4z), a plurality of second-level stations (4Q2, 4Q3, . . . , 4QM) communicating with the First-Level Station (4Q1) as the second-level stations (4Q2, 4Q3, . . . , 4QM) are connected to the First-Level Station through a Multipoint Bus (4r). Therefore, the Centralized Management System is capable of communicating the Computer with the First-Level Station through a Dual Port RAM (Random Access Memory), intercommunicating a plurality of Second-Level Stations through a Multipoint Interface and Multipoint Bus, and controlling and managing several thousands of Terminals (for example, Public Telephones).

Abstract: A device and a method for performing a denormalization operation to restore channel signals, normalized into specified levels due to a multichannel process in an MPEG-2 multichannel audio decoder, to their original levels. The denormalization device performs the denormalization operation on the basis of one multiplication operation. To this end, the denormalization device comprises a ROM for storing therein denormalization information to be multiplied by data to be denormalized, a multiplier for multiplying the data to be denormalized, by the denormalization information stored in the ROM, and a controller for controlling the ROM and the multiplier.

Abstract: A very large scale integrated circuit for performing a bit-serial matrix transposition operation, comprising an input shift register module for inputting N multiplied results of two N.times.N matrixes in the unit of k bits and outputting them in the unit of k/N bits in response to a load signal, a bit-serial transposition module for selecting k/N-bit data from the input shift register module in response to a switching control signal, an output multiplexer module for selecting k/N-bit data from the bit-serial transposition module in response to the switching control signal, and an output register module for inputting output data from the output multiplexer module in the unit of k/N bits and outputting N data in the unit of k bits. According to the present invention, when an N.times.N matrix transposition operation is performed, the operation occupancy of transposition cells becomes 100% after an N-input delay occurs. Also, the processing unit of data becomes smaller by using a bit-serial processing algorithm.

Abstract: A composite decoding device for an MPEG-2 multichannel audio decoder. The composite decoding device is capable of simultaneously decoding information coded in a dynamic crosstalk coding manner and information coded in a phantom coding manner. To this end, the composite decoding device comprises an arithmetic unit for receiving a control word, information and a scale factor from a first-in-first-out memory, performing an arithmetic operation with respect to the received information and scale factor on the basis of a dynamic crosstalk coding manner or a phantom coding manner determined by the received control word and outputting the arithmetic result to a dual port memory, and a controller for generating a plurality of sequential control signals in response to the control word from the first-in-first-out memory to control the arithmetic unit.

Abstract: Disclosed is a washing/drying machine which can upwardly blow heated air from a bottom of a spin tub to articles placed in the spin tub, thereby improving a drying effect. The washing/drying machine has a housing and an upper frame mounted on an upper portion of the housing. An outer tub for receiving a washing liquid is disposed in the housing. A spin tub, in which an article to be washed is placed, is accommodated in the outer tub. A pulsator for generating a liquid flow in the spin tub is mounted on a lower portion of the spin tub. An air guide, for guiding heated air towards a bottom wall of the outer tub, is attached to an inside wall of the upper frame. The air guide has a blower and a heater therein. A blowing fan is mounted on the lower portion of the spin tub so as to blow out the heated air towards the side wall of spin tub. An air guiding plate is disposed above the blowing fan so as to guide the heated air into the article in the spin tub.