Abstract: An optical recording system which includes a recording medium of which the light absorption spectrum changes when exposed to light; a first transparent substrate provided on a first side of the recording medium; a plurality of first parallel transparent elongated electrodes provided on the first substrate; a second substrate provided on a second side of the recording medium opposite to the first side; a plurality of second parallel elongated electrodes provided on the second substrate in the direction perpendicular to the first elongated electrodes so as to form a plurality of recording spots at their intersections; a light source for directing a light beam to a plurality of the recording spots on the recording medium; and an electric field applying device for controlling the field strength of an electric field applied to a plurality of the recording spots to control the degree of change in the light absorption spectrum so that multiplex information recording is made in a dimension of electric field.

Abstract: A semiconductor integrated circuit device with an ECL sequential circuit is disclosed, which comprises a data holding circuit provided the ECL sequential circuit for holding the output thereof, and an emitter follower for feeding the output of the data holding circuit as an input thereof, and an emitter follower circuit control circuit thereto. The emitter follower current when the emitter potential on the emitter follower is at a high level, is set to be lower than the emitter follower current when the emitter potential is at a low level.

Abstract: A memory device includes a plurality of memory arrays, each having a plurality of memory elements, placed in a memory address space, a memory array selecting device responsive to the address information for designating a given address in the memory address space to select one memory array from the plurality of memory arrays, an address generating device for generating the row and column addresses of the selected memory array, and a setting device for setting memory element information corresponding to the capacity of memory elements in each of the memory arrays, the memory array selecting device responsive to the address information and the memory element information for decoding corresponding to the memory capacity to select the desired memory array, and the address generating device responsive to the address information to generate the row and column addresses of the memory array consisting of memory elements of the maximum capacity.

Abstract: A fishing hook having a shank, a bend, and a barb, characterized in that the tip of the barb is flattened to form a wedge-like blade with its blade edge substantially equal in length to the diameter of the bend.

Abstract: A surface mount type electrical connector comprising an insulating housing having a plurality of contact receiving apertures and a plurality of contacts, each having a front contacting section, an intermediate section, and a rear section. The rear section is movably placed in a channel of the insulating housing so as to not only protect from foreign objects making short circuit or deformation but also absorb all the applied stresses uniformly. The insulating housing is mounted with a pair of mounting members to prevent warping or separation from the printed circuit board.

Abstract: An objective lens driving device with a multipole magnet which includes a cylindrical yoke with an E-shaped cross section for defining an annular gap between the central yoke section and the outer cyclindrical yoke section; four rectangular tracking coils attached to the side of a focusing coil such that a pair of vertical coil sides of each tracking coil are parallel to a supporting shaft; and a pair of circular multipole magnets disposed within the gap between the central and outer cylindrical yoke sections and each having at least three magnet sections, with opposite end magnet sections having a polarity opposite to that of the central magnet section so that the vertical coil sides interlink with magnetic fluxes having opposite directions to each other, whereby tracking forces act upon the vertical coil sides in the same direction.

Abstract: An electrical connector assembly machine for loading an insulating housing having a plurality of parallel apertures with a plurality of contacts. It consists of a housing support for supporting the insulating housing; a table having a plurality of parallel channels at equal intervals and in registration with the parallel apertures for receiving the contacts; a pusher disposed over the table so as to be movable vertically and laterally along the parallel channels and having a plurality of grooves for receiving conductor sections of the contacts when the pusher is lowered. The grooves each have at the front edge a jaw portion for pushing forward crimped strain relief tabs of the contact.

Abstract: A termination tool for terminating a conductor to a contact or terminal having a connecting section for connection with the conductor and a contacting section for contact with a mating contact. The connecting section has either piercing walls or clamp tabs and strain relief tabs. The termination tool consists of a fixed base or head for supporting the contact and a movable die movable toward the fixed base to terminate the contact by either piercing or crimping.

Abstract: An electrical connector shield case for enclosing an insulation member having a plurality of contacts, which comprises a cylindrical member made by bending a metal piece so as to enclose said insulation member; and said cylindrical member having locking means on opposite ends of said metal piece so as to prevent opening of said cylindrical member.

Abstract: A circular door operating method and apparatus comprising two pairs of arcked door leaves, two pairs of arcked fixed panels arranged so as to form an enclosure defining a cylindrical wind blocking compartment. Each door leaf is hinged at an end and releasably coupled at the other end to a hanger assembly traveling on a circular track by means of a pulley mechanism. When a door leaf is released from the hanger assembly to pivot about upper and lower hinge mechanisms for operation as a hinged door, not only the upper and lower hinge mechanisms firmly support the door leaf in place but also a control unit disables the sliding door operation, thus providing a quick and safe escape from the building in the event of an emergency.

Abstract: An electrical contact pin has a mounting portion to be fitted into a PTH of a circuit board for fixing without using any solder. The mounting portion has a substantially rectangular cross section. A pair of alternating recesses are provided on opposite sides of said rectangular section. A pair of corners adjacent to said recesses extend beyond said sides to form a pair of resilient projected sharp corners. Because of the resilient projected sharp corners, the contact pin fits into a PTH of large tolerances.

Abstract: A logic circuit has the first electron transmission protein film made of the first electron transmission protein, the second electron transmission protein made of the second electron transmission protein having a redox potential different from that of the first electron transmission protein and glued on top of the first electron transmission film, the third electron transmission protein made of the third electron transmission protein having a redox potential different from that of the second electron transmission protein and glued on top of the second electron transmission protein film, an electrode connected to the first electron transmission protein film, an electrode having an electrical influence on the second electron transmission protein film, and an electrode connected to the third electron transmission protein film to form transistors making use of differences in redox potential among the respective electron transmission proteins for performing a logical operation for a plurality of inputs.

Abstract: A fixed magnetic disk device having a spindle for rotating a disk and an actuator for moving a magnetic head, which comprises a housing having a trapezoidal or triangular shape with two openings on its sides at right angles, one of the openings being provided with a mounting flange for supporting both ends of the spindle, and the other opening adapted to receive the actuator, and a pair of covers flanged to both the openings.

Abstract: A multi-conductor flat cable electrical connector, which comprises a plurality of terminals each having a contacting part for contact with the contacting part of a mating connector and a pressure welding part to be connected to a conductor of a multi-conductor flat cable; an insulating housing for holding said terminals in such a manner that said pressure welding parts may project therefrom; a termination member having a conductor holding recess for an end of said flat cable and adapted to be united to said insulating housing; said terminals being arranged in said insulating housing so that said pressure welding parts may be aligned in at least two pairs of lines; said pressure welding parts being arranged alternately in each of said pairs of lines at a pitch twice that of said conductors so that the pitch between said adjacent terminals may be equal to that of said conductors; said termination member having a pair of conductor arranging recesses extending laterally to either side from said holding recess and

Abstract: A semiconductor laser has a pair of clad layers sandwiching an active layer on a substrate. A crystal layer having a broader band gap than that of the active layer and a smaller lattice constant than that of the substrate is grown on the substrate in the active layer regions adjacent to the mirror surfaces to thereby eliminate the light absorption in these regions and increase the output power without shifting the wavelength to the longer side.

Abstract: An electrical connector for a printed circuit board consisting of a housing having a body section with a plurality of receiving apertures and a depending post section, and a plurality of female contacts fitted in the receiving aperture and capable of receiving a male contact in either front or rear opening. The female contact has an elongated wiring section which fits in the longitudinal groove and a lateral slot provided in the post section, thus providing female contacts free of a flux deposit and firmly retained in the housing.

Abstract: A method and apparatus for a TV receiver in which a frame of TV image signals is stored in the image memory and then read out for display as a still picture. In order to display both still picture and subsequent motion pictures, the image signals sampled with the number of pixels corresponding to the number of addresses in a specified area of the image memory are written in the process of reading out all the addresses of the image memory.

Abstract: In order to reduce the interference of readout signal waves that increases with the recording density in a magnetic disk device, the readout circuit is provided with a waveform equalizing circuit consisting of a resistance circuit, a delay line, and a differential amplifier to produce a signal advanced by a certain time and attenuated by a certain degree and a signal delayed by a certain time and attenuated by a certain degree. These signals are subtracted from the original signal to decrease the half-value width of the readout signal, thus reducing the interference between the waves. However, these conventional attenuation factors of the advanced and delayed signals cannot be changed freely so that the half-value width of a readout signal cannot fully be decreased without increasing the undershoot in the head or tail portion.

Abstract: An electrical connector for terminating two or more layers of conductors includes an insulating housing having a plurality contacts mounted therein and, on opposite ends, a pair of latch arms with a latch opening, and first and second cable retainer members. The first retainer member has on opposite ends a pair of latch bosses for engagement with the latch openings to latch the first and second retainer members to the insulating housing. The second retainer member has on opposite ends two pairs of latch bosses for engagement with the openings to temporarily mount the first and second retainer members on the insulating housing. This temporary mounting device permits easy replacement of a cable before complete termination of the cable.