Abstract: A pin contact of a connector and a method of fabricating the pin contact which enables a substantial decrease of manufacturing cost, and smooth installation of the pin connector without a change in the pitch of arrangement at the time of press-fitting into a pin housing. A flat metal sheet undergoes blanking and pressing to form a narrow piece including a strip portion of decreased area of a fracture. Then an approximately L-shaped connecting portion is bent at right angles to raise the narrow piece sideways. Thereafter the strip portion of the narrow piece is pressed along the direction of rising, to thereby form an approximately cylindrical contact section. A raised piece at the rear of the contact section is provided with a locking section which faces approximately at right angles with the direction of arrangement.

Abstract: A module for optical communication which is capable of securely preventing reflection even if there are variations in the urging force of a ferrule and also of protecting an antireflection member from damage. A holding stopper for holding an antireflection member and also for positioning a ferrule is installed coaxially in a housing. A ferrule holding member for holding the ferrule is coaxially mounted on the holding stopper. When the ferrule is urged by a spring or other urging member and inserted in the ferrule holding member, the distal end of the ferrule first comes in contact with the apex of the antireflection member, causing the antireflection member to deform according to the distal end surface of the ferrule, then the distal end of the ferrule comes in contact with the reference surface of the holding stopper so that it is positioned and fixed in the direction of an optical axis.

Abstract: The present invention relates to an optical waveguide device, particularly a structure for positioning end faces of an optical waveguide and end faces of optical fibers with respect to each other, as well as a method of realizing such a structure. V grooves for positioning optical fibers are formed on a glass substrate by hot pressing, and the optical fibers are put in the V grooves to position end faces of the optical fibers and end faces of an optical waveguide with respect to each other, thereby forming the optical waveguide device of the invention.

Abstract: A mode changeover apparatus which can turn a mode changeover gear in a returning direction without the shortage of a turning force in the returning direction in the event of occurrence of over-stroking of a head base, prevent a magnetic head from moving toward a magnetic tape beyond the optimum position thereof and reliably perform a mode changeover operation.

Abstract: An E.A.S. system capable of immediately making a decision on a broken condition of a tag 2 itself or its connection cable 8 or a non-connected condition of the connection cable 8 to a repeating device 1 at start-up of the system. The system comprises the repeating device 1 and a tag 2 detachably coupled through the connection cable 8 to the repeating device 1. The repeating device 1 is equipped with a jack 3 having a plug receiver 3a, a fixed contact 3b and a movable contact 3c, a pull-up resistor 4 coupled between the movable contact 3c and a power supply 10, a connection section for connecting the fixed contact 3b and the plug receiver 3a with a ground point, and a tag condition detecting section (5 to 7) coupled to the movable contact 3c. The tag 2 incorporates an internal resistor 2a, and a double pole plug 9 is detachably connected through the connection cable 8 with the jack 3.

Abstract: A driving circuit and a Self-oscillating circuit incorporating a piezoelectric oscillator having one terminal connected to ground. In the driving circuit, an alternating driving power is supplied to a first terminal of the piezoelectric oscillator, and the second terminal of the piezoelectric oscillator is connected to ground. The damping capacitance of the piezoelectric oscillator is effectively canceled by connecting the first terminal to an input of an amplifier, and forming a feedback loop by connecting an output of the amplifier to the input through a electrostatic capacitance whose value is 1/N times the damping capacitance of the piezoelectric oscillator, where the amplifier has a gain of (N+1).

Abstract: An on-car motor driving apparatus is equipped with a motor for moving a moving unit such as a window of a motor car, a motor driving controller which controls the revolution, stop, and rotational direction of the motor, and a current measuring and comparing device which measures the variation in current per unit time of the motor and compares the measured variation in current with a preset value. The on-car motor driving apparatus stops the revolution of the motor and/or reverses the rotational direction of the motor through the motor driving controller. The apparatus is further equipped with a voltage measuring device for measuring motor driving voltage and a voltage-based time setting device which changes the length of the unit time in accordance with the driving voltage value measured by the voltage measuring device. Line voltage is supplied to a differential amplifier only when the line voltage is supplied to the motor.

Abstract: An optical reading system including a warning sound for preventing theft of a portable optical reading apparatus (scanner). A timer is activated when movement of the scanner is detected by a movement detection device mounted on the scanner, indicating that the scanner has been lifted (moved) from a stationary condition. A user determination unit determines whether the movement of the scanner is caused by an authorized user. When the user is an authorized person, a timer is reset. When the timer is not reset during a predetermined time period, a warning sound is generated at a sound level which changes from a low sound level to a loud sound level over a period of time unless a predetermined operation is performed. In one embodiment, a second warning sound is generated at a stationary receiving station when the scanner does not respond to a polling signal.

Abstract: A vibratory gyroscope including an elongated vibrator having a central (neutral) axis (Y-axis), a drive unit for deforming the first direction such that the vibrator vibrates in a first (X) direction, an added mass attached to the vibrator at a position offset from the central axis in a second (Z) direction, and a detector formed on the vibrator. Rotation of the vibratory gyroscope about the second (Z) direction during vibration in the second direction causes Coriolis force to acting on the added mass in a direction parallel to the central axis. Because the added mass is offset from the central axis, a resulting vibration in the second (Z) direction is produced, which is detected by the detector. With this arrangement, the central axis of the vibrator is placed in parallel with the surface of rotation of the rotating system. Thus, rotations about two or three axes in each direction can be detected in such a manner that noise generation is prevented.

Abstract: A balanced-to-unbalanced converting circuit in which balanced-to-unbalanced converters are formed by a stripline in such a manner as to include a copper foil pattern which is formed on an inner or surface printed circuit layer of a multi-layer substrate and are connected to a double balanced mixer serving as a surface-mounted component provided on a first printed circuit. In the case of this converting circuit, a part of conventional surface-mounted components are eliminated from the multi-layer substrate. Thereby, the high density packaging of other surface-mounted components can be achieved. This contributes to the miniaturization, thickness reduction, weight reduction and price reduction of an entire portable telephone. Further, the balanced-to-unbalanced converters are formed by placing the copper foil pattern on a printed circuit layer which is sandwiched between grounded conductor layers of the multi-layer substrate.

Abstract: A drive control system for supplying a drive voltage to a DC servo motor. The drive control system includes a position detector for detecting a rotational position of the DC servo motor, and a controller which switches the drive mode of the DC servo motor from DC drive to PWM drive when a detected position value obtained by the position detector is within a predetermined amount of a value corresponding to a target stop position.

Abstract: Disclosed is a safety device of a secondary cell, which comprises a lid having an opening section and directly or indirectly fixed for closing a cell case; a pressure receiving means covering the opening section and having flexibility to displace with an internal pressure of the cell; an element having a conductive path connected at one end to an internal electrode of the cell and at the other end to an external electrode, for breaking the conductive path with displacement of the pressure receiving means resulting from a change in the internal pressure of the cell; and locking pawls which fasten the pressure receiving means to the lid by staking to close the cell interior, to thereby keep the cell interior closed when the internal pressure is at a specific value or less and to release a gas from inside through a gap produced between the pressure receiving means and the lid by unfastening staked sections when the internal pressure has exceeded the specific value.

Abstract: An E-shaped core is composed of a main core and side cores which are combined into one piece. A coil is wound around a bobbin which is inserted in the main core. A plate-shaped auxiliary core is connected to a sliding member. Connecting the E-shaped core and the auxiliary core completes the assembly of the magnetic head for a magneto-optical recording device. The auxiliary core surrounds the main core; therefore, the concentration of the magnetic flux at the end of the main core can be enhanced and the efficiency for generating magnetic field for a recording medium can be improved. In addition, the use of the E-shaped core and the plate-shaped auxiliary core permits easier machining of the cores.

Abstract: A rotary connector including a first housing rotatably connected to a second housing and forming an annular space therebetween, and a flexible cable wound within the annular spacing. According to a first aspect, the conductors of the flexible cable associated with an airbag circuit are spaced further apart than conductors for other circuits mounted on a steering wheel. A direct connector includes first terminals connected to the airbag conductors and second terminals connected to the other conductors. The first and second terminals are spaced apart and/or divided by a divider to prevent interference during assembly. In accordance with the second aspect, a locking member for preventing relative rotation of the first and second housings prior to assembly on a vehicle includes a cover portion for covering an open end of the direct connector.

Abstract: An optical reading apparatus (bar code reader) including a plurality of light emitting elements, each light emitting element emitting light in different directions onto an information recording surface which has a linear recording (bar code pattern) printed thereon. A light receiving element receives reflected light from the information recording surface and generates a recording medium read signal for each light emitting element which is transmitted to a signal processing section. The signal processing section includes a plurality of conversion processing routes for converting the recording medium read signals from the plurality of light emitting elements into a plurality of display signals. Each of the display signals is then decoded separately.

Abstract: A portable input apparatus used in conjunction with a controllable information processing apparatus which comprises a light receiving element receiving a base light emitted from a light emitting section of the controllable information processing apparatus and being composed of a first detector light receiving element, a second detector light receiving element and a reference light receiving element arranged therebetween, each being of a non-split type; an optical signal transmitting section transmitting an optical signal to the controllable information processing apparatus side; signal conversion sections converting an output current of the non-split type light receiving element and generating a time shared output voltage; a signal processing section processing the time shared output voltage to generate relative angle data; and a control section performing operation and calculation of the relative angle data to form a coordinate signal and transmitting the optical signal including the coordinate signal to the

Abstract: An IBM PC compatible keyboard is provided which, on power-up, does not access the keyboard LEDs until receiving a command from the host computer. When the keyboard controller performs a Basic Assurance Test (BAT) on power-up before receiving a host command, the controller does not turn on the LEDs. Upon receiving a Reset command from the host, the controller: (1) turns on the LEDs and performs a BAT with LEDs on; and (2) flashes the LEDs a second time to be compatible with the IBM PCs. Another feature of the invention is a non-destructive test of the controller RAM during BATs. The RAM is tested non-destructively both for the "stuck-at-1" and the "stuck-at-0" conditions. Still another feature is that the controller determines the state of the keyboard LEDs without reading a hardware port. The controller keeps track of the LED state by flags in the controller memory, and the controller determines the LED state by reading the flags.

Abstract: A magnetic head device whose slider and supporting plate are bonded and affixed together by the use of an adhesive having both photosetting and thermosetting properties. The slider has mounted thereto a magnetic detection section. It is preferable to apply a thermosetting resin to a portion other than those portions to which the adhesive with both photosetting and thermosetting properties has been applied. At one end of the supporting plate where the junction of a tongue, one end of which is a free end, and a slider is provided, the adhesive with both the photosetting and thermosetting properties is applied toward the free end of the tongue, while the thermosetting adhesive is applied toward a base end of the tongue.