Abstract: A composite ceramic body and a method thereof are provided. The composite ceramic body comprising a first bonding body comprising a ceramic containing Si ingredient, and a second bonding body bonded to the first bonding body through a bonding material containing, as main ingredient, a Si compound which includes the element common to the Si ingredient contained in the first bonding body. The first and second bonding bodies can be bonded strongly and uniformly without any adhesive. Since the composite ceramic body has high bonding strength, it is applicable to microchemical chips and reformers.

Abstract: A composite ceramic body and a method thereof are provided. The composite ceramic body comprising a first bonding body comprising a ceramic containing Si ingredient, and a second bonding body bonded to the first bonding body through a bonding material containing, as main ingredient, a Si compound which includes the element common to the Si ingredient contained in the first bonding body. The first and second bonding bodies can be bonded strongly and uniformly without any adhesive. Since the composite ceramic body has high bonding strength, it is applicable to microchemical chips and reformers.

Abstract: A combined memory medium is constructed by an optical disc used as a read-only memory, a cartridge for holding or receiving the optical disc, and a fixed memory which is held in the cartridge. The read or write operation for the fixed memory is carried out by structure different from that used for the optical disc so that the optical disc and the fixed memory constitute an integral memory medium. A combined memory medium drive apparatus includes the combined memory medium, a disc access block for reading out the data on the optical disc, a memory access block for performing reading or writing of data for the fixed memory, and a control block for interpreting an instruction sent from an external device to control the reading of data from the optical disc through the disc access block and the reading or writing of data for the fixed memory through the memory access block, in which the optical disc and the fixed memory are complementarily used.

Abstract: In an optical signal reproducing apparatus for a conventional disc phonograph record, the groove of said record is irradiated with the light beam from a direction that varies cyclically at a constant frequency in a plane. Said plane includes both the tangential velocity vector of the groove and a normal line to the surface of the groove. At the moment that the light beam irradiates the surface of the groove from a perpendicular direction, the reflected light beam traces back the same path as that of the irradiating light beam. When a photo-detector is limited by a slit to detect only the reflected light beam tracing back the same path as the irradiating light beam, the photo-detector detects light pulses which are pulse-phase-modulated by the slope angle of the surface of the groove. The recorded signal can be reproduced by demodulating said pulse-phase-modulated pulses.

Abstract: A game apparatus for enabling players present at remote places from each other to easily play the game through a connected common communication network like a telephone line. The game apparatus has functions for detecting and displaying the moved arrangement of a game piece, for transmitting and receiving the detected signals via the communication network, and for collating the reproductive motion of the one player, performed by watching the displayed moved arrangement of a game piece, with the intended motion carried out by the other player.

Abstract: An electric rotating machine includes a field permanent magnet which is permanently magnetized to N and S poles alternatively and an armature core which is arranged coaxially with the magnet and has a plurality of salient poles facing to the magnet. Poly-phase coils are wound on the root of the salient poles. By providing an indented portion at the major face of the salient pole facing the magnet, the cogging torque can be remarkably reduced, and further by providing auxiliary salient poles ripple torque can be also reduced.

Abstract: A speed control system for a d-c electric motor comprising a three-terminal space control IC to provide a constant voltage source having a negative internal resistance equal in absolute value to the internal resistance of the motor and thereby render the motor rotatable at a constant controlled speed. A resistance element having a positive temperature coefficient is used as an external circuit element for the IC so that rotation speed variations relative to load torque variations will be substantially constant despite variations in the ambient temperature.

Abstract: An electronic control apparatus for controlling currents supplied to star-connected multiphase loads.