Abstract: A thin film magnetic head fabricated in accordance with a thin film manufacturing method comprising a front end of an upper core layer formed on a magnetic gap layer, and a rear end of the upper core layer formed on an interlayer insulating layer for insulating a conductor coil layer to be coupled with the front end of the upper core layer, and a method for manufacturing a thin film magnetic head fabricated by a thin film manufacturing method comprising the steps of forming a lower core layer on a substrate made of a nonmagnetic material, forming a magnetic gap layer on the lower core layer, forming a front end of an upper core layer on the magnetic gap layer, forming an interlayer insulating layer and a conductor coil layer on the magnetic gap layer, and forming a rear end of the upper core layer coupled with the front end of the upper core layer and the lower core layer on the interlayer insulating layer for insulating the conductor coil layer.

Abstract: In a magnetic disk apparatus adapted such that a magnetic disk made of a hard disk type carrier with a magnetic recording region formed on the surface thereof is rotated in a high speed therein, air is introduced between its slider formed integral with a magnetic head and the magnetic disk, whereby the magnetic head is floated over the magnetic disk and allowed to write data on the magnetic recording layer or read data written on the magnetic recording layer, the magnetic disk apparatus is disclosed wherein the angle of obliquity of the main axis of the slider at the innermost circumferential portion of the recording region with respect to the radial direction of the magnetic disk is set to such angle as will bring the floating height of the edge portion of the slider toward the center of the magnetic disk and the floating height of the edge portion thereof toward the outermost circumference are virtually equal to each other.

Abstract: Disclosed is herein an initializing method for printing type rings in a printer having printing type rings, a sensor disc and a detector portion which constitutes a plurality of main detecting portions and an end detecting portion, the printing type rings being stopped in predetemined positions with pulses provided from the sensor upon opposition of the main detecting portions of the sensor disc to the sensor, followed by printing, characterized in that plural pulses provided from the sensor upon rotation of the sensor disc are counted to determine a minimum pulse interval and the pulse counted just after the omission of pulse counting for a period larger than the minimum pulse interval and smaller than the interval between the main detecting portion located at the terminal end and the end detecting portion is judged to be a pulse provided by the end detecting portion opposedly to the sensor, whereupon the printing type rings and the sensor disc are stopped.

Abstract: An ECL Programmable Logic Array (PLA) having ECL voltage level compatible input and output leads, thereby providing a high-speed PLA. A unique programming means is provided which allows the ECL PLA to be programmed using TTL-compatible programming voltage levels, such as are provided by common and inexpensive prior art TTL PLA programmers. In another embodiment higher speed is achieved by the design of each sense amplifier using emitter function logic such that the sense transistor and load functions a cascode amplifier. In another embodiment a lower power PLA device is achieved by utilizing a switched current source pull down means for pulling down the rows of the PLA array. In another embodiment low power and user convenience is achieved by allowing each pair of output terminals to share a predefined set of product terms.

Abstract: A liquid crystalline compound represented by the following general formula: ##STR1## where m and l represent individually integers within a range: 6.ltoreq.m.ltoreq.14 and 1.ltoreq.l.ltoreq.5, the symbol * represents an asymmetric carbon atom and the compound is required to be optically active. The compound can induce the twisting arrangement when added to the TN system or phase transition type liquid crystal mixture, as well as can improve the spontaneous polarization as the index of the ferroelectric property when added to the SmC* liquid crystal mixture.

Abstract: An apparatus for measuring the floating amount of the magnetic head comprising a single color light source such as laser, a rotating glass disk, a light scanner section, a photoelectric converter element, and an interference light strength computing section (or waveform memory section and computer section). Therefore, static behaviors such as pitch angle and balance of the magnetic head can be measured along with dynamic behaviors such as floating and frequency fluctuations thereof. Even when the floating amount of the magnetic head is extremely low, the measurement can be made accurately in a shorter time period with a high S/N ratio.

Abstract: An improved contact mechanism for a switch is disclosed in which impact between contacts is reduced or moderated to minimize rebound of the contacts thereby to prolong the life of the switch. The contacts are sufficiently spaced apart from each other when the switch is in a stable open position, but when the switch is operated, the movable contact is first moved gradually to an intermediate position toward the fixed contact whereafter it is moved rapidly to the fixed contact over a thus reduced distance.

Abstract: An optical coordinate system input device includes a plurality of light emitting elements aligned in X and Y directions and sequentially, selectively supplied with a drive current, and a plurality of light receptor elements opposed to the respective light emitting elements each receiving a light signal from opposed one of the light emitting elements. The device specifically includes an adjusting circuit to adjust the value of the drive current flowing in the light emitting elements.

Abstract: This inventive DMOS transistor provides faster turn-on switching than prior art lateral and vertical DMOS transistors in dV/dt situations and prevents catastrophic failures from high dV/dt's. The preferred embodiment of this improved device combines a Schottky diode with a vertical DMOS transistor, within the semiconductor structure itself, to form a device equivalent to a Schottky diode in parallel with an N channel vertical DMOS transistor. The Schottky diode effectively replaces the body diode of the transistor when forward biasing voltages are applied to the DMOS transistor. Thus, the body diode is never forward biased and there is no recovery time associated with the body diode. This speeds up the turn-on of the DMOS transistor since there are no minority carriers in the P-N junction body diode to recombine. Also, the parasitic bipolar junction transistor (BJT), formed by the source, body region, and drain, cannot turn on, thus preventing second breakdown of the BJT.

Abstract: A character selecting mechanism for a printer having a plurality of type wheel units arranged axially on a shaft. The character selecting mechanism comprises a plurality of electromagnetic clutches each having a solenoid, a sleeve rotatably received in the center hole of the solenoid and rotated continuously during a printing cycle, and a pair of selector plates resiliently pressed against the opposite end surfaces of the sleeve, respectively, so as to be attracted to the sleeve and to be turned by the sleeve when the solenoid is energized, having tongues facing opposite to each other to form part of a magnetic path for the magnetic lines of force of the solenoid with a small gap therebetween and in contact with each other through a small contact area. Each electromagnetic clutch controls a pair of type wheel units to stop the respective type wheels of the pair of type wheel units individually to position the selected characters of the type wheels at the printing position.

Abstract: A computer is sped up by reducing significantly the time necessary for the computer to detect and respond to an overflow following an ALU operation of a type which generates an overflow. This is done by assuring the next instruction in sequence is the one to be executed and in parallel detecting the occurrence of an overflow as the result of an implementation of a selected instruction and then producing a flag in response to the overflow. The flag is detected, and selected portions of the computer are disabled to inhibit any change in state within the computer following the generation of the overflow. An interrrupt sequence is then implemented to correct the output of the instruction which generated the overflow to compensate for the overflow. The next following instruction is then implemented after completion of the interrupt routine.

Abstract: Disclosed is a liquid crystal element using a film transistor as a switching element, the liquid crystal element comprising two substrates opposed to each other, film transistors and spacers disposed on the opposed surface of one of the substrates, a transparent electrode formed on the opposed surface of the other substrate, a metal wiring formed simultaneously with a light shield of a film transistor or an upper metal layer of the spacer, the metal wiring having one end disposed between the film transistor or spacer and the transparent electrode whereas the other end thereof extends to the peripheral edge of the one substrate.

Abstract: A main pole exciting type magnetic head for vertical magnetic recording, including a lower slider formed of a magnetic material, a winding core formed of a magnetic material, a substrate formed of a non-magnetic material and disposed so that one end face thereof is positioned on an upper surface of the winding core, a main pole film formed on one end face of the substrate, and an upper slider formed of a magnetic material, the upper slider being opposed to the lower slider through a vertical magnetic recording medium; as well as a method of producing such magnetic head.

Abstract: A character generator for use in a printing system such as a thermal printing system, which is capable of printing characters with uniform contrast is provided. The character generator comprises a first section for containing therein a desired character pattern information and a second section for containing therein a driving power control information associated with the character pattern in the first section. Preferably, the driving power control information has individual control signals associated with the rows or columns of the character pattern. Thus, driving power may be applied selectively at least at two different levels when printing a character, preferably row by row or column by column.

Abstract: A power window device is adapted to drive a motor which automatically closes a windowpane of a car in response to door locking of the car, and cut the drive power for the motor after a predetermined time.

Abstract: A back core fixing structure of magnetic head is provided, in which a back core is fixed to magnetic cores in such a manner that a holding member provided with a resilient tongue segment having pinching power is attached to the open end on the opposite side of a pair of magnetic cores to the confronting side facing opposite a magnetic medium with the resilient tongue segment opened on the side of the open end, and the back core is fitted in the space between the magnetic cores and the resilient tongue segment, whereby position adjustment of the back core is achieved easily and fixing work is simplified and can be automated.

Abstract: The identification of the status of an anti-theft system is made by using a motor vehicle telephone system and a system for preventing vehicles from thefts. First, a time is set in order to turn the telephone system to the power-on state. A time period for which the power-on state continues is also set. The telephone system is turned on at the pre-set power-on time, and the status of one or more operating modes of the anti-theft system is checked only when an incoming call arrives during the power-on state and when a predetermined ID code has been entered. With this arrangement, identification can be available from a place away from a vehicle to determine whether the vehicle is at the normal state or not. In addition, the telephone system may be set to the power-on state only at the predetermined time only for a pre-determined period of time. This additional feature reduces power consumption of batteries.

Abstract: A unique timing system is provided which allows for a user to program timing events with variable periods and edges from a fixed frequency clock, and having resolution greater than that of the fixed reference frequency. Delay elements, which are inherently expensive, inaccurate, and require repeated calibration, are minimized.

Abstract: A code wheel for use with a reflective type optical rotary encoder which can be produced easily and optically read efficiently. The code wheel includes a non-reflective plate, and a reflective plate having a suitable number of notches formed along a periphery thereof and mounted in an overlapping relationship on the non-reflective plate whereby a reflective portion of the code wheel is formed by a face of the reflective plate between each two adjacent notches while a non-reflective portion is formed by a face of the non-reflective plate exposed through the corresponding notch of the reflective plate.

Abstract: Disclosed is here a rotary encoder having a recording medium including positional information arranged in a circumferential direction, sensors disposed opposing the positional information, and a driving shaft linked with a central position of the recording medium for detecting, based on a change in outputs from the sensors, the positional information of the recording medium rotated by means of the driving shaft. A link body is formed by achieving a bending work on an elastic plate such that bent lines of the elastic plate form a rectangular shape and that there are formed two pairs of opposing bent leg pieces, one of the two pairs of the opposing bent leg pieces is fixedly secured on the recording medium and the other one thereof is fixedly secured on a coupling body disposed in the proximity of the recording medium, and the driving shaft is inserted into and fixed on a shaft inserting hole formed in the coupling body.