Abstract: A game machine main body has a manual start button, sensor means for recognizing in an amusement parlor H the presence of a person who plays a game with the machine main body 1, and a CPU for receiving signals from the sensor means. Changeover means transmits a signal indicating that the machine main body is not usable to a terminal of a player in the case where the sensor means recognizes in the parlor H the presence of the person playing the game using the machine main body. The changeover means operates in conformity with an input from the terminal disregarding the manipulation of the start button when the sensor means detects in the parlor H the absence of the person playing the game with use of the machine main body and when the changeover means receives a signal indicating that the player at the terminal desires to use the machine main body from the terminal via the network.

Abstract: A control device for controlling a plurality of motors of an air conditioner comprises a plurality of power circuits each for supplying a corresponding DC voltage to drive a respective motor. Motor driving circuits, each having a plurality of switches, supply the DC voltage from a corresponding power circuit as an AC voltage to windings of the corresponding motor. A rotational position of each corresponding motor is detected, and a position detecting signal is generated dependent thereon. Switch driving circuits, each receptive of a corresponding driving signal, drives the plurality of switches of each corresponding motor driving circuit. A single microcomputer controls the rotation of each of the plurality of motors by generating the plurality of driving signals.

Abstract: A process for the desulfurization of a sulfurous acid gas-containing waste gas by blowing the waste contact into an absorbing liquid through a plurality of sparger pipes is disclosed, wherein various operation conditions are specifically correlatively controlled to carry out the desulfurization in a stable manner at minimum costs.

Abstract: A control apparatus for controlling motors of an air conditioner comprises a converter circuit having switching circuitry for converting AC power to DC power and setting an input voltage of an input alternating current waveform to a sine wave of the same phase as that of an input voltage, first and second brushless motors for driving a compressor and a blower, first and second inverter circuits for converting the converted DC power to AC power and supplying AC power to the first and second brushless motors, and a microcomputer for controlling the compressor and the blower of the air conditioner. The microcomputer is constructed in such a manner that input and output operations which are necessary to control the air conditioner are executed for input and output circuits, thereby controlling at least the compressor and the blower of the air conditioner.

Abstract: A control apparatus for controlling a motor of an air conditioner includes a converter, having switching for improving an input power factor, for converting an AC power to a DC power and an inverter for converting the DC power supplied from the converter to the AC power and supplying to a compressor. The output DC voltage of the converter is detected by a DC voltage detecting circuit. An input alternating current is detected by a current detecting circuit. A microcomputer for controlling the inverter calculates a current command from data stored on the basis of the detected voltage. The detected current is compared with the current command, an ON percentage of a PWM signal to control the switching is obtained, and the PWM signal is generated.

Abstract: A method and apparatus for the treatment of a waste gas containing dust and chemical contaminants are disclosed. The apparatus includes a combination of a cooling/dust-eliminating chamber and a chemical treatment chamber in a single container. The first mentioned chamber is provided with sprayers for the cooling liquid, a perpendicular bulkhead or pipes, a collecting plate for the cooling liquid and gas-dispersing pipes in a special configuration, so that the dust-liquid separation can be efficiently effected without badly affecting the chemical treatment of the gas. Thus, the apparatus can be minimized in size as a whole and made economically attractive.

Abstract: A color video signal detector that detects the color level and the color phase of a color video signal includes a differentiating circuit that differentiates a color video signal to detect edges in the color video signal, a switching IC that holds values of the color video signal at times after a given time interval from the edges, a circuit that counts the order of the edges and extracts the value of the color video signal at every count, and a microcomputer that measures the extracted values of the color video signal.

Abstract: A portable electronic device, such as a portable sound reproducing device, a portable sound recording/reproducing device, a portable radio receiver or a portable video tape recorder, comprising a case containing an electronic circuit assembly and having a front panel, a plurality of operating buttons for operating control switches for controlling the electronic circuit assembly, supported on the front panel is provided with a sliding cover assembly slidably provided on the front panel and capable of being shifted between a first position to cover the operating buttons and a second position to expose the operating buttons. The sliding cover assembly is retained at the first position by a retaining mechanism to prevent the accidental operation of the operating buttons.

Abstract: A method and apparatus for the treatment of a waste gas containing dust and chemical contaminants are disclosed. The apparatus includes a combination of a cooling/dust-eliminating chamber and a chemical treatment chamber in a single container. The first mentioned chamber is provided with sprayers for the cooling liquid, a perpendicular bulkhead or pipes, a collecting plate for the cooling liquid and gas-dispersing pipes in a special configuration, so that the dust-liquid separation can be efficiently effected without badly affecting the chemical treatment of the gas. Thus, the apparatus can be minimized in size as a whole and made economically attractive.

Abstract: A process for treating a flue gas containing sulfur dioxide and fly ash is disclosed in which an aqueous absorbent liquid is sprayed into the glue gas stream, and the resulting gas is fed to a vertical, open-ended pipe to form a jet annular stream, so that portions of the SO.sub.2 and the fly ash contained in the flue gas are transferred to the liquid phase. The jet annular stream is then sparged into the aqueous absorbent held in a well-mixed vessel to form a jet bubbling layer in a shallow, upper region of the aqueous absorbent, so that a greater part of the SO.sub.2 and the fly ash are removed from the gas. Air is introduced into a deep lower region of said aqueous absorbent to provide streams of fine oxygen-containing gas bubbles throughout the whole vessel, so that the absorbed SO.sub.2 and other sulfites are oxidized to form coarse gypsum crystals while COD of the absorbent is reduced.

Abstract: A stereo headphone having left and right headphone units which are connected to a binaural input plug that has left and right input cords respectively connected between the left and right headphone units and wherein the right and left input cords are connected together in parallel between the binaural input plug and a predetermined intermediate point and with a muting switching device mounted at the intermediate point so as to allow muting of both headphone units under selected conditions.

Abstract: A torque limiter includes a rotational driving member and a driven member aligned along the common axis. A plurality of axially extended arcuate recesses are formed on the outer periphery of an interlocking ferrule fitted over a rotational driving member, and also a plurality of radially extended grooves, matched with the arcuate recesses of the interlocking ferrule, are formed on the inner periphery of an interlocking ferrule fitted over a driven member opposed to the driving member. In each of the radial grooves, there is fitted a torque-transmitting steel ball in such a manner that it can only move radially and rotate about its own axis while it is confined in motion in the revolving and axial directions. As long as they transmit torque less than a preset critical level, these balls are biased diametrally inward by an elastic pressure means so that the rotational driving member and the driven member are integrally driven together.

Abstract: A torque limiter comprises a driving member and a driven member disposed concentrically with the former. A drive-transmitting body made fast on the driving member has on its outer periphery several radial grooves which, in turn, hold torque-transmitting rollers of a size adapted to fit in the grooves. The upper and lower peripheral surfaces of the rollers are kept in pressure contact with the under end surface of a torque-transmitting-roller-supporting ring above the drive-transmitting body and with arcuate recesses formed on the upper surface of a driven member which is revolvably supported on the upper end surface of the lower portion of the driving member through a thrust bearing ring. A torque-spring-supporting sleeve is threadedly engaged with the outer periphery of the upper mounting portion of the driving member and is loaded with elastic pressure means in the form of torque springs.

Abstract: A television receiver is provided with a cabinet having a circular opening in a front panel thereof, a frame having a generally cylindrical outer surface and being mounted for rotation about the center of the circular opening with the cylindrical outer surface of the frame projecting forwardly from the front panel, a cathode ray tube disposed within the cabinet and attached to the frame for rotation with the latter, cooperatively engageable stop elements on the cabinet and frame, respectively, for limiting to a predetermined angular range the turning of the frame and cathode ray tube relative to the cabinet, and a detent arrangement on the frame and cabinet, respectively, for yieldably resisting turning of the frame at a plurality of angularly spaced apart locations within the predetermined range of turning.

Abstract: A video projecting system having a cabinet with one end being opened, a screen in the cabinet and its upper portion, a movable side board attached to the cabinet at the lower side of its opening, and a projector and a mirror both attached to the movable side board on its inner surface, in which when the movable side board is drawn out a picture from the projector is reflected on the mirror and then projected onto the screen.