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11. 发明专利

JPS5677766A MEASURING DEVICE OF WORKING PROPERTIES 失效
公开(公告)号：JPS5677766A
公开(公告)日：1981-06-26
申请号：JP15783080
申请日：1980-11-10
申请人： SONY TEKTRONIX CORP
发明人： ISHIJIMA YASUMORI , MUROOKA RIKICHI
IPC分类号： G01R13/22 , G01R31/00
摘要： PURPOSE:To upgrade a measurement precision by making the working property of the device to be measured measurable by giving a comparison between the two waveforms displayed when the device to be measured is inserted and when a direct observation is given to the input signal to be supplied to the terminal each. CONSTITUTION:A comparison is given to the reference voltage between the device 13 to be measured to which the periodical input signal is applied and the D/A converter 14 which responds to the number of the outputs of the device 13 and a series of the inclination signals. Then the working properties of the device 13 are displayed. With variation of the reference voltage of the converter 14 in a range of V1-V3, the inverting time points of the output of the comparator 12 vary as t1- t3 each. For instance, if the converter 14 of 10 bits is used, the reference voltage having a high resolution of 1024 steps can be obtained. The display on the CRT18 at that moment shows the waveform of the working properties of the device 13. The time axis of the waveform is decided by the slope of the high-speed inclination signal. In such constitution, the accuracy of measurement can be increased greatly like an ordinary sampling oscilloscope.

12. 发明专利

JPS54114154A SAMPLE HOLDING CIRCUIT 失效
公开(公告)号：JPS54114154A
公开(公告)日：1979-09-06
申请号：JP2173178
申请日：1978-02-27
申请人： SONY TEKTRONIX CORP
发明人： TAKEUCHI SUMIO , MUROOKA RIKICHI
IPC分类号： G11C27/02 , H03K7/02

13. 发明专利

JPS5417070A WAVEFORM MONITOR 失效
公开(公告)号：JPS5417070A
公开(公告)日：1979-02-08
申请号：JP8135277
申请日：1977-07-07
申请人： SONY TEKTRONIX CORP
发明人： ISHIJIMA YASUMORI , MUROOKA RIKICHI
IPC分类号： G01R13/22 , G01R13/34
摘要： A waveform observing method and apparatus incorporating signal sampling and digital technologies is disclosed. An input signal to be observed is compared with the output from a digital-to-analog converter and the comparison output is used for controlling display means such as a cathode-ray tube. A wideband input signal can be measured with much higher accuracy than the conventional apparatus.

14. 发明专利

JP2001344920A MAGNETIC HEAD FLOATING QUANTITY MEASURING INSTRUMENT AND ITS PROOFREADING METHOD 失效
公开(公告)号：JP2001344920A
公开(公告)日：2001-12-14
申请号：JP2000162364
申请日：2000-05-31
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI
IPC分类号： G11B5/455 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To measure a floating quantity with respect to the magnetic disk of a magnetic head by a small and inexpensive device. SOLUTION: The magnetic had 10 has a writing element 12 and a reading element 14. A switch 20 selectively connects a signal line 15 from the element 14 to a signal processing circuit 18 or a capacitance detection circuit 22. One terminal of the circuit 22 is electrically connected to the line 15 from the element 14 and the other terminal of the circuit 22 is electrically connected to the rotary shaft 28 of a spindle motor 26 via a contact brush 24 to be connected with the magnetic disk 30. Thus, the capacitance between the head 10 and the disk 30 is detected. An arithmetic control circuit 29 calculates a floating quantity from head-disk capacitance detected by the circuit 22.

15. 发明专利

JPH0122587B2 失效
公开(公告)号：JPH0122587B2
公开(公告)日：1989-04-27
申请号：JP21411581
申请日：1981-12-28
申请人： SONY TEKTRONIX CORP
发明人： YOKOGAWA HIDEMI , MUROOKA RIKICHI , FUKUZAWA MYUKI , TOMIOKA MACHIKO
IPC分类号： G01R13/28 , G01R13/20 , G01R31/3177

16. 发明专利

JPS641744B2 失效
公开(公告)号：JPS641744B2
公开(公告)日：1989-01-12
申请号：JP3224784
申请日：1984-02-22
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI
IPC分类号： G01R13/20

17. 发明专利

JPS6329357B2 失效
公开(公告)号：JPS6329357B2
公开(公告)日：1988-06-13
申请号：JP9312383
申请日：1983-05-26
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI , KOYAMA TETSUO , TSUKAMOTO TAKURO , IWASA TETSUO , TAKAHASHI HISAO , KURATA MAKOTO
IPC分类号： G11B20/10 , G06F12/06 , G06F12/08 , G11C7/00

18. 发明专利

JPS61265575A METHOD FOR MEASURING SIGNAL 失效
公开(公告)号：JPS61265575A
公开(公告)日：1986-11-25
申请号：JP10800985
申请日：1985-05-20
申请人： SONY TEKTRONIX CORP
发明人： TSUKAMOTO TAKURO , MUROOKA RIKICHI
IPC分类号： G01R13/20 , G01D1/18
摘要： PURPOSE:To enable the setting of a tolerant value at each part of a wave form, by comparing the signal to be measured stored in a second memory means with the max. value and min. value stored in a first memory means and repeatedly storing the signal to be measured in the second memory means until the signal to be measured is contained between the max. value and the min. value or comes to be not contained therebetween. CONSTITUTION:An input signal is converted to a digital signal by an A/D converter 14 through an input terminal 10 and a buffer amplifier 12 while the digital signal is inputted to an envelop detection circuit 16 and the max. value and the min. value at every period are detected if necessary to be stored in a memory 18. A trigger/timing control circuit 20 detects the trigger point of the signal from the amplifier 12 corresponding to a setting device 22 and sets take-in timing to control not only the operation timing of the A/D converter 14 and the circuit 16 but also the writing operation and address of the memory 18. The stored content of the memory 18 is transmitted to a display memory 22 through a bus 21 and the memory content of the memory 22 is read from a display control circuit 32 and converted to an analogue signal by a D/A converter 34 to be displayed on a display device 36.

19. 发明专利

JPS6137810B2 失效
公开(公告)号：JPS6137810B2
公开(公告)日：1986-08-26
申请号：JP1780580
申请日：1980-02-18
申请人： SONY TEKTRONIX CORP
发明人： TAKEUCHI SUMIO , MUROOKA RIKICHI , SAKAMOTO ATSUSHI
IPC分类号： H03M1/10 , H03M1/06 , H03M1/08 , H03M1/12

20. 发明专利

JPS6025840B2 失效
公开(公告)号：JPS6025840B2
公开(公告)日：1985-06-20
申请号：JP2173178
申请日：1978-02-27
申请人： SONY TEKTRONIX CORP
发明人： TAKEUCHI SUMIO , MUROOKA RIKICHI
IPC分类号： G11C27/02 , H03K7/02

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