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2. 发明专利

JPS56114994A JAPANESE WORD PROCESSOR 失效
公开(公告)号：JPS56114994A
公开(公告)日：1981-09-09
申请号：JP1766580
申请日：1980-02-15
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： SUMI AKIRA , IWAMURA TAISHIN , KOYAMA KIYOAKI
IPC分类号： G06K15/10 , G06F3/09 , G06F3/12 , G06F17/21 , G09G1/06 , G09G5/22 , G09G5/24

7. 发明专利

JPS5523706A SWITCHING REGULATOR 失效
公开(公告)号：JPS5523706A
公开(公告)日：1980-02-20
申请号：JP9260478
申请日：1978-07-31
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： SUMI AKIRA
IPC分类号： H02M3/28 , H02M3/335
摘要： PURPOSE:To enable the use of a switching regulator for an AC voltage and for a DC voltage even if the difference between the voltage is large, by equalizing the chopping frequency of a chopper circuit to the oscillation frequency of a DC/DC converter. CONSTITUTION:The chopper circuit 1 and the DC/DC converter 2 are connected in series with each other. The not-yet-rectified high-frequency rectangular voltage (e) produced on the secondary side of the transformer T of the DC/DC converter is integrated by an integration circuit 5 to generate a triangular wave of small amplitude to equalize the chopping frequency to the oscillation frequency of the converter. Thus, the switching regulator operates properly even if an input voltage Vi fluctuates greatly. Therefore, the switching regulator can be used for the AC voltage 100V and for the DC voltage 23V. Even if a load RL changes, the oscillation frequency is almost constant because of the properties of the DC/DC converter. Since no pulse generator is needed, the construction is simplified.

8. 发明专利

JPS554656A PROCESS CONTROL UNIT 失效
公开(公告)号：JPS554656A
公开(公告)日：1980-01-14
申请号：JP7784078
申请日：1978-06-27
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： SUMI AKIRA , KATAOKA FUSATOSHI
IPC分类号： G05B11/36 , G05B7/02 , G05B15/02
摘要： PURPOSE:To utilize the position-type operation to the digital operation-type program control unit, and thus ensuring application to the proportion adjustment meter or the proportion differential adjustment meter featuring the manual resetting function. CONSTITUTION:The following units are provided: microprocessor 1; analog comparators 21-27 installed at the input side of microprocessor 1; A/D converter 3 provided at the output side of microprocessor 1; semiconductor switch 4; buffer amplifier 5; holding capacitor 6 provided at the input terminal; manual switch 7; and manual-auto change-over switch 8 each. Thus, the control output is obtained by the proportion operation or the proportion differential operation and via the position-type operation, and the resetting member is set by switch 7. And when the manual state is switched to the auto state, the correction value I, which is added to the auto output based on manual control output VM, proportion gain KP, deviation en and manual reset value manR each, is defined as IO=YM-KPen-manR. And microprocessor 1 features the function to change I to zero based on certain time constant TB.

9. 发明专利

JPS5434716A ARITHMETIC UNIT 失效
公开(公告)号：JPS5434716A
公开(公告)日：1979-03-14
申请号：JP10142177
申请日：1977-08-24
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： SUMI AKIRA , OOTA AKIRA , ASAKA TAKAO
IPC分类号： H02J1/00 , G06F1/00 , G06F1/26 , G06G7/10
摘要： PURPOSE:To secure a high-efficiency driving for the whole unit with just on DC power source by applying the DCwoltage stabilized through the switching regulator to the microprocessor and applying the negative voltage given from the regulator and the power given from the DC power source to the A/D converter respectively.

10. 发明专利

JPS5423307A DATA COMMUNICATION CIRCUIT OF DOUBLEECURRENT LOOP 失效
公开(公告)号：JPS5423307A
公开(公告)日：1979-02-21
申请号：JP8797977
申请日：1977-07-22
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： SUMI AKIRA , FUJINO KENJI
IPC分类号： H04L5/14 , G06F13/00 , H04B10/524 , H04B10/556 , H04B10/80 , H04L12/40 , H04L12/42 , H04L25/02
摘要： PURPOSE:To simplify a device with lines insulated mutually by using photo couplers.

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