Showing papers by "Panasonic published in 1979"

Electronic musical instrument

Abstract: In a keyboard electronic musical instrument having tone generators of frequency divider systems, every key is associated with and controls a plurality of tone keyers which respectively gate tone signals having frequencies being harmonically related with each other. The tone signal gated by one of the keyers is passed through a frequency shifter, while the tone signal gated by the rest of the keyers is not. Among the tone keyers, the above-mentioned one is a keyer for producing an attack signal, while the remainder are keyers for producing a normal lasting signal. Both signals, now being slightly out of harmonic relation, are mixed together and finally transduced into sound by a loudspeaker. The produced sound has subtly fine musical results with a sense of many different tone sources as in an individual--oscillator system instrument.

Optical switching device

Abstract: Respective end faces of two or more optical waveguides (23 to 29) are connected on one end face of a focussing rod lens (20) and a reflection means (21) having a reflection plane tilted with a specified angle (α) to the normal plane to the lens axis is disposed behind the other end face of the focussing rod lens (20) and angle of reflection plane of the reflection means (21) is varied by rotating the reflection means (21) around the lens axis (203) or by means of a piezo-electric driving device (30), thereby attaining selective switching of the waveguides (from 23 to selected one of 24 or 29) or varying the amount of rays to be transmitted through the waveguides (23 and 24 of FIG. 4), or thereby modulating the rays. By utilizing a semitransparent filter forming another tilted reflection plane, the amount of attenuation for different wavelength or connection of the waveguides are controlled separately.

Remote game apparatus

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.

Composite image display apparatus

Abstract: An image display apparatus has an: image signal receiver for simultaneously receiving two different image signals, a first image signal and a second image signal; a memory for writing therein the second image signal; controlling means for controlling the writing position, writing frequency, writing sequence, reading-out sequence, reading-out frequency and start-timing of reading-out of the second image signal; a display for displaying full picture information or partial picture information of the second image signal a part of a displayed picture of the first image signal by selectively reading-out the second image signal under the control of the controller; and zoom-up device for stepwisely or continuously varying the writing position and reading-out position of the second image signal controlled by the controller so as to zoomwisely display the full or partial picture of the second image signal on the picture of the first image signal

Electric hair curling iron with rechargeable battery power supply

Abstract: An electrically heated hair curling iron includes a sheet-shaped heater with electrodes affixed to an electrically resistive layer, wrapped around an elongated cylindrical support, and capable of being rapidly heated and maintained hot by electric current available from a rechargeable storage battery. The resistive layer has a positive temperature coefficient of resistance so that its temperature is self limiting. The storage battery is contained in a handle attached to the cylindrical support, and a battery charger is disclosed which comes into electrical contact with the battery when the handle is inserted in a cavity located in the battery charger. An elongated longitudinal clip is used to retain the hair in contact with the heater; a removable cap protects the heater and clip when the iron is not in use, and also engages a switch which ensures that the iron does not remain on. The charger and the curling iron are each provided with an LED to indicate operation of the charger and state of charge of the battery, respectively.

Liquid ejection system with air humidifying means operative during standby periods

Abstract: A liquid ejection system comprises a writing head having a liquid chamber for containing liquid therein, a liquid discharge channel, an electromechanical transducer for generating pressure rises in the liquid in the liquid chamber for discharging the liquid through the liquid discharge channel, an air chamber having an air discharge channel coaxially aligned with the liquid discharge channel for discharging dry air from the air chamber along the passage of the ejected liquid. A humidifier, which is operative during the standby mode of the system, is provided to humidify the air supplied to the air chamber. A closing member is mounted with respect to the writing head and operative to close its air discharge channel during the standby mode to direct the humidified air through the exit side of the liquid discharge channel to maintain the liquidity of the liquid in the liquid discharge channel during the standby period and open the air discharge channel during the operational period to allow ejection of dry air simultaneously with liquid to a writing surface.

Photoelectric conversion device

Abstract: A photoelectric conversion device such as a solar cell in which electrodes formed from a conductive paste make ohmic contact with the surfaces of impurity diffused layers respectively formed in a semiconductor substrate. The conductive paste contains ultrafine particles of silver and gold as its principal solid components. The conductive paste further contains, as its additional principal solid components, ultrafine particles of a metal having a eutectic temperature lower than that of silver when alloyed with the semiconductor and a powdery glass material not containing any lead oxide glass component. The electrodes provided by the conductive paste exhibit excellent electrical properties when the conductive paste is subjected to firing treatment at a temperature of about 600° C. Thus, when, for example, the semiconductor substrate is of n-type silicon and a p + -type diffused layer is formed in one of its major surfaces to form a p + /n junction of relatively small depth, the electrode making ohmic contact with the p + -type diffused layer does not penetrate through the p + /n junction and has a low contact resistance. The photoelectric conversion device such as the solar cell thus obtained can operate with a higher conversion efficiency than hitherto and can be manufactured at a lower cost than hitherto.

Helical scan video tape recorder for recording video and audio signals on contiguous tracks

Abstract: In a magnetic recording and reproducing system of the type wherein a plurality of rotating magnetic heads record the video signal on a magnetic tape as tracks which are inclined at an angle relative to the direction of travel of the magnetic tape, the audio signal is time compressed and recorded by the rotating magnetic heads on tracks contiguous with either or both ends of said video signal recording tracks, whereby even at a considerably low tape transport speed the audio signal may be recorded in a stable manner.

Electrographic recording medium with conductive layer containing metal oxide semiconductor

Abstract: An electrographic recording medium comprising a conductive layer coated on a support such as of paper and overcoated with a dielectric layer The conductive layer contains fine particles of an n-type metal oxide semiconductor, preferably a whitish or lightly colored one such as SnO 2 , In 2 O 3 or ZnO, dispersed in a binder which may be either a nonconductive polymer or a polyelectrolyte This recording medium is excellent in recording characteristics and particularly advantageous in its usefullness over a wide humidity range containing very low relative humidities

Diffuser with pseudorandom phase sequence

Abstract: A theoretical analysis of the power spectra of diffusers with a series of pseudorandom phase sequences is presented. General equations describing three typical cases of power spectra are derived by making use of the constraints assumed. Profiles of the power spectra showed good agreement with the results of numerical computation using the fast-Fourier-transform algorithm. The images of the diffusers through a double-diffraction optical system were also evaluated by computer simulation. The advantage of pseudorandom phase sequences over random phase sequences is discussed from the viewpoint of signal-to-noise ratio.

Refrigeration lubricating oil compositions

Abstract: Oil compositions are disclosed for effective use in the lubrication of rotary-type compressor for refrigeration equipment. The composition essentially comprises a polyglycol oil blended with specified amounts of at least one of additives or compounds of the group consisting of glycidyl ether type epoxy compounds, epoxidized fatty acid monoesters and epoxidized vegetable oils.

Automatic part insertion machine

Abstract: A single automatic part insertion machine which can insert the leads of various electronic components such as resistors, IC chips, IF transformers, variable resistors, connectors and so on, into specified insertion or mounting holes of printed circuit boards. The boards are supported on a common set of conveyor rails in one row, and are displaced in X and Y coordinate directions while they are transferred from a feeding position to an unloading position. Specified lead insertion holes of specified printed circuit boards are thus aligned one at a time with selected units of a number of parts feeding means in a predetermined sequence, so that the leads of corresponding electronic components may be inserted into specified insertion holes of the printed circuit boards and clinched if required. An automatic unfinished printed circuit board loading device is provided, as well as an automatic finished printed circuit board stacking device.

Highly reliable temperature sensor using rf-sputtered SiC thin film.

Abstract: A SiC thin-film thermistor for high-temperature use has been developed by using rf-sputtered SiC thin films. This thermistor can be used for industrial and consumer use within an operating temperature range of -100 to 450 degrees C. By using SiC thin films, the thermistor maintains high electrical stability. The resistance change is less than 3% after exposure to heat at 400 degrees C for 2000 h. In addition, the film growth technique made possible the production of a high-accuracy thermistor, i.e., thermistor coefficient < +/-0.5%, thermistor resistance < +/-1.5%.

Cooking device with high-frequency heating means and resistance heating means

Abstract: A cooking device with one cooking or heating chamber in which food may be heated by either one or both of high-frequency heating means and the resistance heating means. The high-frequency or microwave energy is radiated into the heating chamber from the top while the air heated to high temperatures by the resistance heating means disposed within a rear chamber defined back of the rear wall of the heating chamber is circulated therethrough by a circulation fan. Food charges are placed on a receptacle which in turn is placed on a turntable, whereby the food charges may be uniformly heated. The simultaneous use of both the high frequency heating means and the resistance heating means may enable a more wide variety of food to be cooked by a more wide variety of methods.

Pretreatment of photoresist masking layers resulting in higher temperature device processing

Abstract: Method for the production of an LSI circuit device, in which method an organic compound film such as photoresist films is suitably treated to become a heat resistant film and it is used in various production processes as a mask pattern at a temperature of more than 200° C. without deforming the original size of the mask pattern.

Method of producing thin film transistor array

Abstract: A method of producing thin film transistor arrays and having at least 7 steps including: a first step of forming a first electrode layer uniformly over an insulating substrate; a second step of forming electrodes, such as drain and source electrodes and bus bars with a desired pattern by photoetching the first electrode; a third step of forming a uniform semiconducting layer on the surface of the substrate having the patterned electrodes; a fourth step of successively forming a uniform insulating layer over the uniformly deposited semiconducting layer while keeping the array in a vacuum; a fifth step of photoetching the uniformly deposited insulating layer into a desired pattern; a sixth step of photoetching the uniform semiconducting layer into the same pattern as the patterned insulating layer; a seventh step of forming a second electrode uniformly over the surface having the patterned electrodes and insulating layer; and an eighth step of photoetching the uniformly deposited second electrode into a desired pattern.

Method of controlling heating in food heating apparatus including infrared detecting system

Abstract: A method of controlling the application of heat in a food heating apparatus comprising a first heating-control mode such that the heat is applied to an object to be heated until an infrared detecting device detects that a surface temperature of the object has reached at least one predetermined temperature. A second heating-control mode effects at least one of the first heating mode wherein the heat is turned on and off repeatedly and a second heating mode wherein the output of the heat source is decreased gradually. A third heating-control mode is also provided for terminating the application of heat to the object.

Temperature control apparatus

Abstract: This invention is directed to a temperature control apparatus for an air-conditioning apparatus which does not require a manual operation in controlling the temperature of a house room relative to the outdoor temperature. The control apparatus utilizes a micro-computer having a linear function stored thereon. The control of the indoor temperature is carried out by calculating the desired indoor temperature using the linear function of outdoor temperature and controlling the air-conditioning apparatus using the desired indoor temperature.

Exhaust gas control equipment

Abstract: An exhaust gas purifier for purifying combustion gases of engines, the device comprising at least one composite sheet which is formed by sandwiching a catalyst coated sheet of cloth between a pair of supporting nets of heat resistive metal, the composite sheet being disposed in an exhaust pipe in a manner such that the exhaust gas flows in the direction of and along the surfaces of the composite sheet and that the gas contacts the catalyst sheet through the supporting net. The composite sheet(s) are shaped or disposed in a rolled sheet with spacer means to form gas flow path between its layers, or a set of coaxial tubes of the composite sheet disposed with spaces for gas-flow, or a set of parallel-disposed flat composite sheets with spaces for gas-flow. The device is advantageous in low resistivity for the gas flow.

Apparatus for fabrication of magnetic recording media

Abstract: Within the vacuum atmosphere containing oxygen a cylindrical rotary can and an evaporation source are disposed in opposed relationship and in such a way that the normal line constructed at the center of the evaporation surface of the evaporation source will not intersect the axis of the cylindrical rotary drum. The beam of the evaporating ferromagnetic substance is directed to and impinged against the substrate transported along the rotary drum at right angles to the direction of transport thereof.

Combustible gas detecting element

Abstract: There is provided a novel combustible gas detecting element and method for production thereof. The element comprises a gas sensing body comprising a sintered body or film of an amorphous semiconductor comprising a metal oxide, a sulfate and halide.

Process for fabrication of semiconductors utilizing selectively etchable diffusion sources in combination with melt-flow techniques

Abstract: A process for fabrication of semiconductor devices comprising the steps of depositing over the surface of a semiconductor wafer a first insulating layer containing impurities which are to be diffused into the wafer so as to form source and drain regions, depositing a second insulating and melt-flow layer which is softened or melted at low temperatures, opening contact windows, forming a third insulating layer which also contains impurities to be diffused into the wafer so as to form source drain regions, subjecting the wafer to a heat treatment so as to cause melt-flow and form source and drain regions by the diffusion and removing the third insulating layer. LSI circuits with a high source-drain breakdown voltage may be fabricated at high yields.

Gas sensing device

Abstract: A gas sensing device comprises a gas sensing element comprising a gas-sensitie resistive film formed of an aggregate of ultrafine particles of a suitable material deposited on the surface of a substrate of an electrical insulator formed with electrodes

Microwave filter having means for capacitive interstage coupling between transmission lines

Abstract: A microwave filter comprising within a conductive casing, a plurality of resonant transmission lines arranged parallel between opposed end walls of the casing, a plurality of shielding members each located between adjacent transmission lines, and a capacitive interstage coupling member disposed transverse to the transmission line. The interstage coupling member comprises a dielectric member and a plurality of conductive regions arranged successively thereon so as to establish capacitive coupling between adjacent conductive regions. Each transmission line is connected at one end to a side wall of the casing and supported at the other end by the dielectric member in electrical contact with a respective one of the conductive regions, whereby the interstage coupling between the transmission lines is provided by the capacitively coupled conductive regions.

System for automatically transferring information media

Abstract: A system comprising a tape stocker storing a plurality of tapes having recorded thereon sound or images and arranged in a vertical direction for delivering and receiving the tapes, a rack accommodating a plurality of reproduction units arranged at least in a horizontal direction and adapted to reproduce the sound or images recorded on the tapes, a tape handling assembly having a tape receiving head turnable and vertically movable toward or away from the reproduction units, the tape handling assembly being operable to handle the tapes for transferring the tapes between the stocker and the reproduction units in the rack, a carriage supporting the stocker and the taper handling assembly and horizontally movable along the rack, and a control unit for controlling the stocker, the tape handling assembly and the carriage to deliver a specified one of the tapes to the desired reproduction unit. Information media, such as video tapes, are retrieved and transferred by the system to the desired location for the reproduction of the recorded information.

Method of manufacturing electronic circuit apparatus

Abstract: This is directed to an electronic circuit apparatus using a flexible printed wiring board having a conductive leaf formed on the surfaces of a flexible base material such as phenol resin or the like, wherein a circuit conductive leaf is formed on at least the single face of a flexible base material and a peripheral edge leaf is formed on the periphery of the flexible base material. An electronic parts is mounted and connected to the circuit conductive leaf. Since the flexible base material is extremely thin and flexible, the electronic circuit apparatus can be constructed smaller and thinner.

Method of making metal electrode of semiconductor device

Abstract: Method of making metal electrode, characterized by having the steps of: forming double layers of metal on the principal face of the semiconductor substrate which has electrode pads contacting specified regions of the semiconductor substrate, forming a photosensitive film on the whole surface of the metal double layers, etching said photosensitive film in a manner to selectively form openings on areas above the electrode pads, thereby exposing parts of the double layers above the electrode pads, forming metal bumps on said exposed surfaces of said double layers, removing said photosensitive film while retaining narrow surrounding parts around said metal bumps, and etching said double layers of metal by utilizing said narrow surrounding parts as etching mask, thereby removing the parts of said double layers which is covered by said narrow surrounding parts.

Air conditioning system having a plurality of indoor units

Abstract: An air conditioning system comprises an outdoor unit and a plurality of indoor units, a plurality of delivery conduits for supplying working fluid from a variable capacity energy source located in the outdoor unit to the indoor units, and a plurality of control valves respectively provided in the delivery conduits. A temperature sensor and a reference temperature setting device are provided for each room for transmitting corresponding temperature data to a central control unit. The central control unit detects whether the sensed temperature of each room is increasing or decreasing as a function of time and whether the sensed temperature is above or below a predetermined temperature associated with a value established by the reference setting device. Based upon these data the central control unit provides a control signal for closing the valve to divert a certain amount of the total supply energy to other rooms. Another control signal is generated to increase the total amount of supply energy when the temperature level and its gradient of each room indicate a shortage of the total supply energy and to decrease the total amount when a total energy supply excess is indicated.

Wall hanging holder for electric shaver

Abstract: A foldable wall hanging holder for electric shaver comprises an integral plate of a synthetic resin which is foldably or bendably divided into fixing, holding and bracing plate parts respectively by means of first and second hinge parts. The respective plate parts are bent at the hinge parts to form a right-angled triangle, with the holding plate part braced by the bracing plate part at right angles with respect to the fixing plate part to be fixed to a wall surface or the like, for holding the shaver in a hole of the holding part and in an aperture of the bracing plate part aligned with the hole.

Speed control circuit for phase-locked loop motor drive systems

Abstract: A phase-locked loop motor drive system includes a crystal-controlled frequency source for generating reference frequency pulses at a selectable frequency for driving the motor at a desired speed and a frequency divider coupled to the oscillator to reduce the oscillator frequency to a suitable value as a reference frequency for comparison with the frequency and phase of a signal derived from the motor. In order to provide fine adjustment of the motor speed, a speed control circuit is connected between the oscillator and the frequency divider to inhibit the passage of the oscillator pulses to the frequency divider for a selectable period immediately following an output pulse from the frequency divider when it is desired to decrease the motor speed, and inject a train of higher frequency pulses into the frequency divider while the passage of the oscillator pulses is inhibited when it is desired to increase the motor speed.