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    • 4. 发明专利
    • REFRIGERATOR
    • JPH09264659A
    • 1997-10-07
    • JP7360996
    • 1996-03-28
    • HITACHI LTD
    • AOKI YOSHIHISATAKEMOTO AKINOBUKOBAYASHI TORU
    • F25D23/00F25D29/00
    • PROBLEM TO BE SOLVED: To prevent a malfunction such as a breaking of a cord and simplify a door structure of a refrigerator by providing input means for setting an indoor temperature, means for displaying the set temperature condition, and display on-off means for making an on-off control of this displaying in a control circuit for controlling the indoor temperature to a desired temperature. SOLUTION: In this refrigerator, an operating panel 5 comprises one or a plurality of indoor temperature setting switches 4 and a display device 6. The operating panel 5 is disposed within a storing space defined in a refrigerator body. When a door is closed and a door closed signal is inputted to a microcomputer 7 from a door switch 9, a display switch 11 is turned off and the display device 6 stops its displaying. When the door 2 is opened and a door opened signal is inputted to the microcomputer 7 from the door switch 9, the display switch 9 is turned on and a temperature set by an indoor temperature setting switch 4 is detected and the display device 6 carries out its displaying in response to the set indoor temperature. In this manner, since the display device 6 is turned off when the door 2 is closed, the unnecessary electric power consumption can be prevented.
    • 7. 发明专利
    • A/D CONVERTER
    • JPH06303139A
    • 1994-10-28
    • JP11226693
    • 1993-04-15
    • HITACHI LTDHITACHI MICOM SYST KK
    • KOBAYASHI TORUYANAGI YUJITAKEGAWA YOSHIHIKO
    • G01R19/257H03M1/12H03M1/38
    • PURPOSE:To attain high speed overflow detection processing by providing an overflow detection section identifying it that an absolute value of an input analog signal exceeds the conversion range. CONSTITUTION:A successive approximation A/D converter is provided with a voltage comparator circuit CMP 2. An input analog signal Vin is applied to a noninverting input terminal + of the CMP 2 and a reference voltage Vr being a maximum value of the internal analog signal Vc is fed to an inverting input terminal (-). A clock signal Cc2 is fed to the CMP 2 from a conversion control circuit CCTL and its output signal Co2 is fed to the CCTL. The CMP 2 is operated by the Cc2 to compare the voltages Vin, Vr and sets the Co2 to 'H' when the voltage Vin is higher than the voltage Vr. The Co2 is given to the CCTL, for which an overflow signal Of is outputted. Thus, the conversion processing by the A/D converter section is immediately stopped and output signals D7-D0 of a successive approximation register CREG are set to '1' for all the bits and the processing is quickened.
    • 8. 发明专利
    • JPH05299525A
    • 1993-11-12
    • JP10678492
    • 1992-04-24
    • HITACHI LTD
    • NISHIZAWA HIROTAKATANAKA TAMOTSUTOKUDA MASAHIDEKOBAYASHI TORU
    • H01L23/02
    • PURPOSE:To enable the cracking of bump electrodes due to the temperature cycle in a sealing part structure to be avoided by a method wherein the sealing part of the title device is hermetically sealed with the anisotropical bellows absorbing or relieving the thermal stress displacement or strain of a semiconductor chip. CONSTITUTION:A semiconductor chip 12 is surface mounted on a base substrate 11 using a hermetically sealing device between this base substrate 11 and a sealing cap 14. At this time, the sealing parts 16, 17 of this device are hermetically sealed with anisotropical bellows 15 absorbing or relieving the thermal stress displacement or strain. Accordingly, the deformation of the bump electrodes 13 on the semiconductor chip 12 thermally expanding and contracting in the longitudinal direction can make the stress balance by the elastic deformation of the anisotropical bellows not only in the thermal equilibrium state but also in the thermal non-equilibrium state. Through these procedures, the cracking of bump electrodes 13 can be avoided.