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1. 发明专利

JPS5950938B2 失效
公开(公告)号：JPS5950938B2
公开(公告)日：1984-12-11
申请号：JP11085975
申请日：1975-09-16
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI , SANO NOBUHIRO
IPC分类号： G01P3/36 , G01S13/60

2. 发明专利

JPS5694411A REFERENCE VOLTAGE PARALLEL APPLYING CIRCUIT 失效
公开(公告)号：JPS5694411A
公开(公告)日：1981-07-30
申请号：JP17312379
申请日：1979-12-27
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI
IPC分类号： G05F1/56
摘要： PURPOSE:To connect automatically the next reference voltage generating circuit even if one reference voltage generating circuit becomes faulty, by applying output voltages of plural reference voltage generating circuits to the voltage dividing circuit in parallel through voltage followers. CONSTITUTION:Reference voltage generating circuits B1, B2,... load current control circuits A1, A2,..., and voltage followers F1, F2,..., form units U1, U2,..., respectively. Since output voltages of respective followers F1, F2,... are applied to terminal T1 of potentiometer PT in parallel, the highest voltage of output voltages of respective followers F1, F2,..., for example, reference voltage VS1 of unit U1 is applied to terminal T1. Under this state, if circuit B1 becomes unoperated, transistor TR of unit U1 is cut off, and TR of the unit, which generates the highest reference voltage, out of rest units U2, U3,... becomes conductive, and its reference voltage is supplied to potentiometer PT.

3. 发明专利

JP2523018B2 失效
公开(公告)号：JP2523018B2
公开(公告)日：1996-08-07
申请号：JP13752589
申请日：1989-06-01
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI
IPC分类号： G01S17/08 , G01S7/48

4. 发明专利

JPS613025A APPARATUS FOR INSPECTING CHROMATICITY OF COLOR FILTER 失效
公开(公告)号：JPS613025A
公开(公告)日：1986-01-09
申请号：JP12361484
申请日：1984-06-18
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI
IPC分类号： G01J3/51 , G01M11/00
摘要： PURPOSE:To preform the accurate inspection of the chromaticity of a color filter, by branching lights before and after transmitting through a color filter to respectively generate not only upper limit and lower reference signals but also upper limit and lower limit detection signals and detecting the ratio of the upper limit detection signal and the reference signal and that of the lower limit one and said reference signal. CONSTITUTION:Light before transmitting through a color filter 4 is branched by branch means 3a, 3b which in turn respectively generate upper limit and lower limit reference signals through upper limit and lower limit curve interference filters 3c, 3d and photodiodes 3e, 3f while both signals are amplified by amplifier 3g, 3h and divided by dividers 6a, 7a. The light transmitted through the filter 4 is branched by a branch means 5a which in turn respectively generates upper limit and lower limit detection signals through upper limit and lower limit curve interference filters 5c, 5d and photodiodes 5e, 5f while both signals are amplified by amplifiers 5g, 5h and divided by dividers 6b, 7b. The output signals of the dividers 6a, 7a are supplied to comparators 6c, 7c and compared with predetermined values set by variable registors 6b, 7b and, when the chromaticity of the filter 4 is present between upper limit and lower limit curves, a ''0'' level signal is outputted from an AND circuit 8 and it is judged that said color filter is a good product.

5. 发明专利

JPS5235679A SPEED MEASURING DEVICE 失效
公开(公告)号：JPS5235679A
公开(公告)日：1977-03-18
申请号：JP11085975
申请日：1975-09-16
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI , SANO NOBUHIRO
IPC分类号： G01P3/36 , G01S13/60
摘要： PURPOSE:To provide an optical system in front of a grid-form slit and continuously changing the size of a projected image on the grid-type slit face, thereby measuring relative speeds with object face at sufficient accuracy based on the electrical outputs of a receiving photoelectroc conversion element.

6. 发明专利

JP2001249176A MILLIMETER WAVE RADAR DEVICE 失效
公开(公告)号：JP2001249176A
公开(公告)日：2001-09-14
申请号：JP2000063314
申请日：2000-03-03
申请人： KOITO MFG CO LTD
发明人： DAICHO TAKANAO , KUBOYAMA OSAMU , YANAGISAWA TOSHIJI
IPC分类号： G08G1/16 , G01S7/03 , G01S13/34 , G01S13/60 , G01S13/93 , H01Q13/10
摘要： PROBLEM TO BE SOLVED: To provide a millimeter wave radar device capable of suppressing an error of a measured distance mainly caused by a reflected signal, and executing highly accurate distance measurement. SOLUTION: This millimeter wave radar device is equipped with millimeter wave signal generation means 201, 202 for generation a millimeter wave signal to be radiated from an antenna toward an object, and millimeter wave signal reception means 251, 252 for receiving the millimeter wave signal reflected by the object, and measuring the distance to the object by using the millimeter wave signal generated by the millimeter wave signal generation means 201, 202 as a reference signal. The device is equipped with a millimeter wave signal interruption means (circulator) 221 for interrupting the millimeter wave signal guided in the reverse direction from the millimeter wave signal reception means 251, 252 toward the millimeter wave signal generation means 202, on waveguides 214, 212 arranged between the millimeter wave signal generation means 202 and the millimeter wave signal reception means 251, 252 and guiding the reference signal to the millimeter wave reception means 251, 252, to thereby realize highly accurate distance measurement.

7. 发明专利

JPH034190A OPTICAL DISTANCE SENSOR 失效
公开(公告)号：JPH034190A
公开(公告)日：1991-01-10
申请号：JP13752589
申请日：1989-06-01
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI
IPC分类号： G01S17/08 , G01S7/48
摘要： PURPOSE:To minimize an error and measure a distance with high accuracy by converting received pulse light which is supplied through a 1st deflecting means, a deflecting direction rotating means, and a 2nd deflecting means into an electric signal, and making the peak width constant according to the peak amplitude. CONSTITUTION:When a voltage being to be applied to a PLZT element 12-1, the deflecting direction of light rotates in the PLZT element 12 and the rotates passing light begins to pass a deflection plate 14. When a half-wavelength voltage is applied to the element 12-1, the deflecting direction of the element 12 rotates by pi/2 to coincide with the deflection axis of the deflection plate 14, so that the quantity of transmitted light becomes maximum. The received pulse light which is passed through a deflection plate 13, the element 12, and the deflection plate 14 and converged on a photodetector 9 is converted by a detector 9 into the electric signal corresponding to the quantity of light and the signal is amplified to become a stop system electric signal. Even if the quantity of received light from a target body varies greatly, the peak amplitude of the stop system electric signal is held invariably constant through automatic amplitude adjusting operation according to the stop system electric signal is larger or smaller than a set value.

8. 发明专利

JPH03163387A OPTICAL DISTANCE SENSOR 失效
公开(公告)号：JPH03163387A
公开(公告)日：1991-07-15
申请号：JP30207089
申请日：1989-11-22
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI
IPC分类号： G01S17/10
摘要： PURPOSE:To increase a counting result and to simply obtain high distance accuracy by generating emitted pulse light in non-synchronous relation to a clock pulse and increasing the number of the clock pulses passing through a gate circuit. CONSTITUTION:When a part of emitted pulse light is extracted and supplied to a gate circuit 6 as a start pulse, the output clock of a clock pulse generator 4 passes through the gate circuit 6. Next, the reflected pulse light from an target body is condensed by a detector 8 and supplied to the circuit 6 as a stop pulse to block the passage of a clock. The clocks passed through the circuit 6 during this time are counted by a counter but, since the emitted pulse light is generated in non-synchronous relation to the output clock, shift is generated between the generation points of time of the start pulse and the output clock and the number of passed clocks increases. This operation is repeated at each time when the pulse light is emitted and clock pulses are counted (N) times by an N-time counter 12 and the counting result is divided by N as distance data and the N-time averaged distance up to the target body is obtained. In this case, since the counting result increases, distance accuracy is enhanced.

9. 发明专利

JPS5463873A FREQUENCY TRACER 失效
公开(公告)号：JPS5463873A
公开(公告)日：1979-05-23
申请号：JP12969077
申请日：1977-10-31
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI
IPC分类号： G01R23/02 , G01S15/50 , H03L7/02

10. 发明专利

JPS5360278A DEVICE FOR MEASURING SPEED 失效
公开(公告)号：JPS5360278A
公开(公告)日：1978-05-30
申请号：JP13471976
申请日：1976-11-11
申请人： KOITO MFG CO LTD
发明人： YANAGISAWA TOSHIJI
IPC分类号： G01P3/36

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