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    • 12. 发明专利
    • AUTOMATIC ANSWERING TELEPHONE SYSTEM
    • JPH0262148A
    • 1990-03-02
    • JP21400588
    • 1988-08-29
    • MATSUSHITA ELECTRIC IND CO LTD
    • HIRAI YUJIYAMAZAKI OSAMUSAKIYAMA TOSHIAKIKAJIWARA KATSUYUKI
    • H04M1/00H04M1/65
    • PURPOSE:To make it unnecessary to go to the set position of an automatic answering telephone system or to call the automatic answering telephone system from a public telephone set by providing a signal generating means to control the master equipment of the automatic answering telephone system at slave equipment. CONSTITUTION:By connecting a change-over switch 30 of slave equipment 2 to a contact point (b) to make it into a wait condition, and depressing a control starting switch 32, a switch 35 is turned on, and the control mode of master equipment 1 of the automatic answering telephone system is obtained. When a control signal is inputted from a dial signal input means 29, and transmitted to the master equipment 1, it is received by the receiving means of the master equipment 1, supplied through a control signal detecting means 10 to a control means 12, switching 15 and 16 are turned on, the message of an incoming message recording means 7 is reproduced through the means 7 and a transmitting means 8, and transmitted to the slave equipment 2. In the same way, the responding message from the slave equipment 2 can be recorded on the means 7, and to go to the set position of the master equipment or to call the master equipment with the use of the public telephone set is made unnecessary, and the usability can be improved.
    • 15. 发明专利
    • AUTOMATIC ANSWERING TELEPHONE SET
    • JPS6480148A
    • 1989-03-27
    • JP23781087
    • 1987-09-22
    • MATSUSHITA ELECTRIC IND CO LTD
    • YAMAZAKI OSAMU
    • H04M1/65
    • PURPOSE:To secure the privacy of the sound-recorded content without being intercepted by other party by sound-recording an identification signal of a caller together with a message, comparing a signal inputted by a message listener with the identification signal and reproducing only the message relating to the corresponding identification signal. CONSTITUTION:When an incoming signal comes from a telephone line 1, a reply message sent and a remote signal detection means 4 monitors a DTMF signal sent from the caller. In detecting the DTMF signal, the signal is converted into a corresponding code (ID code) and recorded on a message sound-recording tape for a prescribed time Ta sec only. When the remote signal detection means 4 detects the DTMF signal being a remote signal, a caller signal sound-recorded before the message on the message sound-recording tape 8 is detected and whether or not the signal is a signal corresponding to the inputted ID code. In case of the signal corresponding to the ID code, a message in succession to the caller signal is reproduced.
    • 20. 发明专利
    • SUPERCONDUCTING ELEMENT
    • JPS6413778A
    • 1989-01-18
    • JP17023187
    • 1987-07-08
    • MATSUSHITA ELECTRIC IND CO LTD
    • YAMAZAKI OSAMUTONO HIDETAKAWASA KIYOTAKA
    • H01L39/22
    • PURPOSE:To simplify a structure by providing a superconductor and a heating means heating the superconductor by the heating means and controlling a superconductive state. CONSTITUTION:A YBaCuO group superconductor is evaporated onto a sapphire substrate 10, a superconducting thin-film body 20 is formed, and Au is evaporated on both ends and used as terminals 21, 22. Alumina is evaporated onto the thin-film body 20, an insulating layer 30 is shaped, a trapezoidal tantalum thin-film resistor 40 is formed onto the layer 30 through evaporation, and terminals 41, 42 are fitted to the top side and base of a trapezoid. When the whole is cooled at the temperature of liquid nitrogen, superconductive currents flow. Consequently, a DC power is connected to the terminals 41, 42 for the thin-film resistor 40, and the superconducting thin-film conductor 20 is heated by the thin-film resistor 40. The width of the terminal 41 is narrowed in the width of the thin-film resistor 40, a temperature rise on the terminal 42 side is reduced, and the temperature distribution of the resistor 40 is reflected to the temperature distribution of the superconducting thin-film conductor. Consequently, currents passed through the thin-film resistor 40 are increased while a superconductive state is broken gradually from the side near the terminal 41, and superconductive currents are diminished. Accordingly, a structure is simplified, and fine working is unnecessitated while the superconductive state can be controlled arbitrarily.