摘要:
A mobile terminal having a packet communication function according to a mobile IP and a communication route optimizing function includes a session controller for setting a session between terminals in accordance with a session control message of a protocol different from the mobile IP. When a session control message from the other party is received in a visited mobile IP network, the session controller executes optimization of a communication route to the other party by the communication route optimizing function before transmitting a response for the received message.
摘要:
A method for promoting energy saving in fluid machinery reduces electric power consumption of fluid machinery by introducing an energy-saving device such as an inverter into existing fluid machinery such as a pump. The method comprises submitting data specifying characteristics of the fluid machinery of a user to a service provider, and estimating an energy-saving effect due to introduction of an energy-saving device into the fluid machinery based on the data specifying characteristics of the fluid machinery and an energy-saving ratio predetermined according to a purpose of fluid machinery. The method further comprises selecting an effective energy-saving device to be introduced, and surveying an operating state of the fluid machinery. The method further comprises calculating an energy-saving effect based on data obtained from the survey, and offering the estimated energy-saving effect, the calculated energy-saving effect, and the selected energy-saving device.
摘要:
In manufacturing an intermetallic compound or an alloy based thereon having a fine-grained microstructure by stirring a charge of components, the high strain energy built up in the charge is released to prevent the occurrence of cracks in the course of cooling to room temperature. The charge is melted by high-frequency heating in an inert atmosphere. The molten charge is transferred into an isothermal furnace filled with the same atmosphere. The solidifying charge is stirred to break the formed crystals and thus forming a homogeneous fine-grained microstructure. After continuing stirring for a given time, the charge with refind microstructure is returned into the high-frequency furnace for reheating to release the high strain energy built up in it.
摘要:
A method for the manufacture of a highly ductile material comprises melting an alloy material in a crucible held under a vacuum, inserting a stirring bar in the molten alloy material in the crucible and rotating the stirring bar at a low speed, causing the stirring bar to be rotated at a high speed after the molten alloy material has reached the temperature for starting solidification, and continuing the high speed rotation of the stirring bar until immediately before completion of the solidification.
摘要:
An electronic musical instrument is of a type wherein musical tone waveforms are stored in a memory as their sampled amplitudes and sequentially and repetitively read out to constitute tone waveforms. A key depression brings forth key code in a digital representation. This key code is used for reading out frequency information from a frequency information memory. The frequency informaton is accumulated to make an address signal for reading out the waveform memory. The read out waveform is reproduced as a musical tone through a tone-color and volume control circuit. This tone-color and volume control circuit is controlled keyboard by keyboard.The key code produced upon depression of the key contains a signal representing the kind of the keyboard to which the depressed key belongs. This signal is applied to a conversion circuit and converted to a signal representative of a different kind of keyboard. The output signal of the conversion circuit operates the tone-color and volume control circuit in a manner corresponding to the keyboard designated by the converted signal while the original signal representing the kind of the keyboard of the depressed key is applied directly to the tone-color and volume control circuit to operate it in a manner corresponding to the keybord of the depressed key. The manner of conversion of the signal representing the keyboard can be selected as desired. There is disclosed an example of a coupler effect between the upper and lower keyboard which can be produced by converting a signal for the upper keyboard to a signal for the lower keyboard while directly using the upper keyboard signal. Also disclosed is an example of a coupler effect between the lower keyboard and the pedal keyboard produced by converting a signal for the lower keyboard to a signal for the pedal keyboard while directly using the lower keyboard signal.
摘要:
When measurement results of received radio wave intensities of wireless base stations, which demands a soft handoff, are received from a wireless terminal in a wireless communication system and when a base station controller attempts to acquire a traffic channel in a wireless base station, via which a wireless communication path will be added, in the state in which the channel resource usage rate of that wireless base station is over a threshold, a traffic channel may be acquired only if the ratio between the radio wave intensity of the wireless base stations establishing communication paths and the radio wave intensity of the wireless base station via which a communication path will be added is higher than a threshold or if the difference between the radio wave intensity of the wireless base stations and the radio wave intensity of the wireless base station smaller than a threshold.
摘要:
In a photometry device, a pair of transistors having the same properties. The first transistor is connected at its base to the CdS photo sensor, and at its collector to a resistor. The second transistor is connected at its base to the resistor, and at its collector to the photoconductive element. When a subject brightness is below a reference level that is defined by a resistance of the resistor, the CdS photo sensor has a smaller resistance than the resistance of the resistor, so a smaller current flows into a base of the first transistor than a current flowing into a base of the second transistor. Consequently, the first transistor is turned off, and the second transistor is turned on, conducting current through a solenoid. Thereby, a stop blade is switched over to change the stop size.
摘要:
A method of manufacturing metallic materials with extremely fine crystal grains comprises the steps of: taking molten metallic material that was melted by heating in a melting chamber and introducing it into an agitation chamber from said melting chamber, and in this agitation chamber, agitating it for 60 seconds or less by means of a screw-shaped stirring rod that is driven to rotate at 500 rpm or greater, and extruding the metallic material in the state of solid-liquid coexistence from an extrusion nozzle on the outlet side, and quench-solidifying the metallic material in the state of solid-liquid coexistence extruded from said nozzle immediately while it still has fine crystal grains as it is continuously formed into the desired shape. In this method, the speed of rotation of the screw-shaped stirring rod may be 800 to 1000 rpm. Also, the time in which the metallic material resides in the state of solid-liquid coexistence may be 5 to 60 seconds.
摘要:
In an electronic musical instrument of a numerical value processing type, an operation of a key causes the generation of a numerical value corresponding to the operated key and a tone having a frequency determined by the numerical value is produced. A vibrato effect is obtained by periodic modification of the value. The instrument comprises a circuit which generates a periodic signal having a portion in which the amplitude of the periodic signal increases at a predetermined rate, and a succeeding portion having a constant amplitude, and a circuit for varying the rate. The rate varying circuit sets the rate to be either a low rate that can be discriminated by human ears or a high rate that can not be discriminated by human ears.
摘要:
Soldering paste obtained by mixing solder material with photosetting flux, which hardens by the irradiation of ultraviolet light, is used for reflow soldering. The photosetting flux contains flux base material, flux base material solvent, a photopolymerization initiator and photosetting prepolymer. The soldering paste obtained by mixing this photosetting flux is printed and bonded on the surface of soldered portion of a printed substrate, and is brought into tight contact with the pad portion of a lead of an electronic part to be soldered. The surface of soldering paste exposed is irradiated with ultraviolet light to cause the surface to gel. Thereafter, soldering is effected by means of preliminary heating and solder melting and heating (reflow heating). Since the surface of the soldering paste is thereby hardened by the irradiation of ultraviolet light, no sags occur during preliminary heating, thus making it possible to prevent any defective bridge caused by sags.