专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH08128817A OPTICAL-FIBER-SENSOR PROBE DEVICE 失效
公开(公告)号：JPH08128817A
公开(公告)日：1996-05-21
申请号：JP28875594
申请日：1994-10-28
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI
IPC分类号： G01B11/30 , G01C3/06 , G02B6/00
摘要： PURPOSE: To obtain an optical-fiber-sensor probe device by which the uneven part in a very small region up to a wide region of a surface can be inspected at low costs, with good efficiency and precisely by a method wherein a light-receiving fiber for the very small region and a light-receiving fiber for the whole region are contained in one optical-fiber probe part. CONSTITUTION: A whole-region light-receiving fiber bundle at a probe tip part and a very-small-region light-receiving fiber bundle for light-receiving of a very small region are contained in an optical-fiber bundle for light receiving in an optical-fiber probe part 20. Then, the very-small-region light-receiving fiber bundle receives reflected light only in the very small region with reference to reflected light from an object 24, to be inspected, by the irradiation of an optical-fiber bundle for light projecting, and the whole-region light-receiving fiber bundle received reflectes light from nearly the whole region. Then, outputs of both light-receiving fiber bundle are supplied respectively to photodetectors 26, 27 so as to be converted into current signals, and the current signals are converted into voltage signals by current/voltage converted 28, 29. The voltage signals are processed by an adder 30 and a subtracter 34 so as to be outputted. Then, the processed signals are analyzed, and the surface state of the object 24 to be inspected can be inspected.

2. 发明专利

JPH0495276A SLICE LEVEL SETTING DEVICE 失效
公开(公告)号：JPH0495276A
公开(公告)日：1992-03-27
申请号：JP21345390
申请日：1990-08-10
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI , TAKAHASHI HISAO
IPC分类号： G11B20/10 , G11B5/00 , G11B20/18
摘要： PURPOSE:To eliminate the need of providing a circuit for measuring one index period by correcting slive level data, based on accumulation data of an accumulator obtained in a state that a constant-voltage is selected by a switch circuit. CONSTITUTION:Based on accumulation data of an accumulator 205 obtained in a state that a constant-voltage is selected by a switch circuit 201, slice level data supplied to a second D/A converter 207 from which a slice level signal is obtained is corrected. That is, since a constant-voltage is selected by the switch circuit 201, the accumulation data of the accumulator 205 becomes that which is proportional to one index period. Accordingly, the slice level data supplied to a second D/A converter 207 measures one index period, and the same result as that which is corrected, based on its measured value is obtained. In such a way, it is unnecessary to provide separately a circuit for measuring one index period.

3. 发明专利

JPH02302906A MAGNETIC DISK INSPECTION INSTRUMENT AND ENVELOPE DETECTING CIRCUIT 失效
公开(公告)号：JPH02302906A
公开(公告)日：1990-12-14
申请号：JP12335789
申请日：1989-05-17
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI , TAKAHASHI HISAO
IPC分类号： G11B5/09 , G11B5/84
摘要： PURPOSE:To execute a correct track mean amplitude value (TAA) measurement by providing an envelope detecting circuit to hold the value of an envelope detection output signal just before in the pulse period of a width corresponding to the sector information part of each sector of a magnetic disk. CONSTITUTION:In response to a read control signal, a test signal is read from a track by a write/read circuit 14, and a read output signal is obtained. The read output signal is inputted through a preamplifier 26 to an envelope detecting circuit 28. To the envelope detecting circuit 28, even a sector pulse signal from a pulse generating circuit 24 is inputted. The envelope detecting circuit 28 has a function to hold the value of the envelope detection output signal just before in the period of the pulse width of the inputted sector pulse signal. Thus, the signal to be generated in the period of the sector information part and to cause the measurement error of the TAA measurement can be ignored, and the correct measurement result can be obtained.

4. 发明专利

JPH0137696B2 失效
公开(公告)号：JPH0137696B2
公开(公告)日：1989-08-09
申请号：JP4975684
申请日：1984-03-15
申请人： SONY TEKTRONIX CORP
发明人： TAKEUCHI SUMIO , MUROOKA RIKICHI
IPC分类号： G01R13/20 , G01R13/34

5. 发明专利

JPS58216961A Logic analyser 失效
标题翻译：逻辑分析仪
公开(公告)号：JPS58216961A
公开(公告)日：1983-12-16
申请号：JP9656983
申请日：1983-05-31
申请人： Sony Tektronix Corp
发明人： YOKOGAWA HIDEMI , MUROOKA RIKICHI , FUKUZAWA MIYUKI , TOMIOKA MACHIKO
IPC分类号： G01R13/28 , G01R13/20 , G06F11/25
CPC分类号： G01R13/20 , G06F11/25
摘要： PURPOSE:To put a logic analyser in possession of retrieving function, by a method wherein the logic level of a signal wave form is displayed as a cursor word and the display of the cursor word is subjected to white and black reversal control when the signal wave form of a cursor position is coincided with a predetermined phenomenon. CONSTITUTION:A retrieving mode is selected by a keyboard 30 while search words are inputted to be stored by RAM28. By this operation, CPU24 compares the search words stored by RAM28 to data information and the total number of the search words are counted while the number of the search words contained prior to the address of a cursor position are calibrated. In the next step, the cursor is successively moved to a righthand direction by the keyboard 30 and, when the cursor position corresponds to the predetermined search word, the cursor word of CRT34 is displayed in a white and black reversal state.
摘要翻译：目的：为了使逻辑分析仪拥有检索功能，通过一种方法，其中信号波形的逻辑电平显示为光标字，并且当信号波在光信号中的显示受到白黑反转控制光标位置的形状与预定的现象一致。构成：通过键盘30选择检索模式，而搜索字被输入以由RAM28存储。通过该操作，CPU24将由RAM28存储的搜索词与数据信息进行比较，并且对在光标位置的地址之前包含的搜索词的数量进行校准的同时对所搜索词的总数进行计数。在下一步骤中，光标通过键盘30连续移动到右手方向，并且当光标位置对应于预定搜索字时，CRT34的光标字以白色和黑色反转状态显示。

6. 发明专利

JPS56115026A ANALOGGDIGITAL CONVERTER 失效
公开(公告)号：JPS56115026A
公开(公告)日：1981-09-10
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 , H03K13/02
摘要： PURPOSE:To compensate the shift of clock signal and the variation of propagation delay time of the circuit parts, by providing a phase control means which controls the phase difference between the clock signal and the analog signal. CONSTITUTION:The change-over switch 32 is switched to the side of reference signal generator 30 to apply the reference signal to the A-D converters 4 and 6. The converters 4 and 6 give an A-D conversion by the clock signals a1 and a2 each that are supplied from the clock signal generator 8, and then applies the output of conversion to the memory devices 10 and 12. The CPU12 calculates the value of compensation to the phase shift between the signals a1 and a2 based on the digital data given from the devices 10 and 12. If the value of compensation is zero, the switch 32 is switched to the side of input terminal 2 to perform an A-D conversion for the analog signal. On the other hand, if the value of compensation is not zero, the control value stored in the data register 22 is applied to the variable delay line 26 via the D-A converter 24 to give a control to the phase of the signal a2. Thus a new value of compensation is obtained, and then a compensation of phase and a calculation are repeated until the value of compensation becomes zero.

7. 发明专利

JP2002074868A DEVICE FOR POSITIONING MAGNETIC HEAD 失效
公开(公告)号：JP2002074868A
公开(公告)日：2002-03-15
申请号：JP2000259913
申请日：2000-08-29
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI
IPC分类号： G11B21/10 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To position the magnetic head to a magnetic disk having a blank servo signal or the like with an inexpensive configuration in inspection of the magnetic disk or the magnetic head. SOLUTION: A blank magnetic disk 16 on which no signal is written is fixed attachably and detachably on a spindle 12. A magnetic disk 14 for servo is a magnetic disk of a data surface servo method on which a known servo signal is written, and is also fixed on the spindle 12. The spindle 12 is rotated by a motor 10. Two heads, a magnetic head 22 to access the blank magnetic disk 16 and a magnetic head 20 for servo to access the magnetic disk 14 for servo, are fixed on a head driving device 18. A control circuit 26 controls the motor 10 and the head driving device 18 according to the servo signal read by the magnetic head 20 for servos accessing the magnetic disk 14 for servo, and thereby, controls the position of the magnetic head 22 to the blank magnetic disk 16. An inexpensive magnetic disk equivalent to a marketed one can basically be used for the magnetic disk 14 for servo.

8. 发明专利

JPH0823923B2 失效
公开(公告)号：JPH0823923B2
公开(公告)日：1996-03-06
申请号：JP12335789
申请日：1989-05-17
申请人： SONY TEKTRONIX CORP
发明人： MUROOKA RIKICHI , TAKAHASHI HISAO
IPC分类号： G11B5/09 , G11B5/84

9. 发明专利

JPH0317305B2 失效
公开(公告)号：JPH0317305B2
公开(公告)日：1991-03-07
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

10. 发明专利

JPS6350668B2 失效
公开(公告)号：JPS6350668B2
公开(公告)日：1988-10-11
申请号：JP9656983
申请日：1983-05-31
申请人： SONY TEKTRONIX CORP
发明人： YOKOGAWA HIDEMI , MUROOKA RIKICHI , FUKUZAWA YOSHUKI , TOMIOKA MACHIKO
IPC分类号： G01R13/28 , G01R13/20 , G06F11/25

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式