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公开(公告)号：US3743933A
公开(公告)日：1973-07-03
申请号：US3743933D
申请日：1971-09-09
Applicant: SFIM
Inventor： PRETI J
CPC classification number: G01S13/92 , D03C3/24 , H03D9/0616
Abstract: An arrangement including a main wave guide flanked by two auxiliary wave guides, all being arranged parallel to one another. Each lateral wall of the main wave guide is formed with a slot, the slots providing openings between the main wave guide and the auxiliary wave guide. The length of each slot is equal to the wave length in air of the wave which is propagated in the main wave guide. One end of one auxiliary wave guide absorbs an incident wave traveling in one direction, and one end of the other auxiliary wave guide reflects an incident wave traveling in the same direction. At its other end, each auxiliary wave guide may have a crystal for receiving energy flowing in the opposite direction toward that other end. The wave guide arrangement may form part of a detection means including a source of microwaves for providing signals traveling along the main wave guide in said one direction, an aerial for transmitting and also for providing signals traveling along the wave guide in the opposite direction, an amplifier chain connected to each of the crystals, and a phase comparator connected to the amplifier chains.
Abstract translation: 一种包括主波导管的布置，其两侧辅助波导，全部彼此平行布置。 主波导的每个侧壁形成有槽，所述槽在主波导和辅助波导之间提供开口。 每个槽的长度等于在主波导中传播的波的空气中的波长。 一个辅助波导的一端吸收在一个方向上行进的入射波，另一个辅助波导的一端反射沿相同方向行进的入射波。 在另一端，每个辅助波导可以具有用于接收朝向另一端的相反方向流动的能量的晶体。 波导布置可以形成检测装置的一部分，该检测装置包括用于沿着所述一个方向提供沿主波导传播的信号的微波源，用于传输的天线，并且还用于沿相反方向沿着波导传播信号， 连接到每个晶体的放大器链，以及连接到放大器链的相位比较器。
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公开(公告)号：US3725691A
公开(公告)日：1973-04-03
申请号：US3725691D
申请日：1971-07-16
Applicant: FAB D INSTR DE MESURE SFIM SOC
Inventor： DELAUNAY J
Abstract: An electronic device is arranged to correct the angle A of gyroscopic heading for variations in the magnetic deviation angle a, thereby producing the angle (A + a). A synchro transmitter generates a sin A and a cos A signal which are subsequently modulated by a modulator. The modulated signals are then integrated between two sets of limits each of which is a function of the angle a and the operational frequency of the modulator. The relationship between the angle a and operational frequency is such as to provide four output signals respectively representing various combinations of the product between different pairs of the functions sin A, cos A, sin a and cos a. By appropriate summing in accordance with trigonametric equations, signals of sin (A + a) and cos (A + a) can be produced.
Abstract translation: 电子装置被布置成校正陀螺仪的角度A以改变磁偏角α，从而产生角度（A + a）。 同步发射机产生随后由调制器调制的sin A和cos A信号。 然后将调制信号集成在两组限制之间，每组限制是角度a和调制器的工作频率的函数。 角度α和操作频率之间的关系是提供四个输出信号，分别表示不同成对函数sin A，cos A，sin a和cos a之间的乘积的各种组合。 通过根据三角方程的适当求和，可以产生sin（A + a）和cos（A + a）的信号。
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公开(公告)号：US3904150A
公开(公告)日：1975-09-09
申请号：US33871473
申请日：1973-03-16
Applicant: SFIM
Inventor： PINOT PIERRE
IPC: G11B23/087 , G11B15/43 , G11B15/50 , G11B15/665 , G11B23/04 , G03B1/04 , G11B15/32
Abstract: A magnetic tape recorder cassette has a captive cover permanently connected to the cassette so that it can be moved from a closed position, covering a front edge which has an opening in it to an open position, in which it covers the rear edge but allows the cassette to be inserted in the recorder. For each spool the cassette has a brake unit arranged to be retracted, when the cassette is inserted in the recorder. The recorder is reversible and drives a tape tensioning device comprising a freewheel and a slipping clutch for each spool, arranged to tend to wind up tape irrespective of the direction of travel of the tape, slipping of one or each clutch allowing the tape to travel while maintaining it taut.
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5.发明授权
公开(公告)号：US3806942A
公开(公告)日：1974-04-23
申请号：US32828973
申请日：1973-01-31
Applicant: SFIM
Inventor： PRETI J
IPC: H01Q1/24
CPC classification number: H01Q1/247
Abstract: A transmitting and receiving head for a Doppler effect radar detector comprising a rectangular waveguide into which a transmitting and a receiving aerial are coupled and which contains a crystal mixer between the two aerials, energy fed to one end of the waveguide being radiated by the transmitting aerial and passing through an obturator which allows a controlled leakage to reach the mixer for mixing with the energy delivered to the other end of the waveguide by the receiving aerial.
Abstract translation: 一种用于多普勒效应雷达检测器的发射和接收头，包括发射和接收天线耦合到其中并且在两个天线之间包含晶体混合器的矩形波导，馈送到波导的一端的能量由发射天线辐射 并且通过允许受控的泄漏的阻塞器到达混合器以与通过接收天线传送到波导的另一端的能量混合。
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Patent Agency Ranking
公开(公告)号：US3806913A
公开(公告)日：1974-04-23
申请号：US26585972
申请日：1972-06-23
Applicant: SFIM
CPC classification number: G01C19/38
Abstract: The invention provides a gyroscopic north-seeking device comprising two photoelectric devices for picking up graduations at diametrally opposite points of the disc, and two channels for processing the picked up signals, said channels comprising logic circuits which determine the direction of rotation of the disc at each pick-up point, plus at least one device for the algebraic addition of the signals picked up from said points. Supplementary logic circuits are provided at the input of the algebraic adder device, to effect the addition (or subtraction) of the picked up signals as a function of coincidence (or non-coincidence) of the directions of rotation of the disc at the diametrally opposite pick-up points.
Abstract translation: 本发明提供了一种陀螺北寻找装置，其包括两个用于拾取盘的直径相对点处的刻度的光电装置和用于处理拾取信号的两个通道，所述通道包括确定盘的旋转方向的逻辑电路 每个拾取点，以及至少一个用于从所述点拾取的信号的代数相加的装置。 在代数加法器装置的输入处提供补充逻辑电路，以实现拾取信号的加法（或减法）作为盘的旋转方向与直径相反的（或不重合）的函数的函数 接送点。
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公开(公告)号：US3798641A
公开(公告)日：1974-03-19
申请号：US3798641D
申请日：1971-05-03
Applicant: SFIM
Inventor： PRETI J
CPC classification number: B61L25/045 , G01S13/82
Abstract: A method and system for identifying a vehicle. An interrogation station transmits a frequency modulated continuous microwave to a vehicle having responder equipment which modulates the received microwave in accordance with an identifying binary code which is decoded at the interrogation station which receives the reflected modulated microwave. The modulation may be further frequency modulated at two different frequencies or may be modulated to give decoded pulses having different widths.
Abstract translation: 一种用于识别车辆的方法和系统。 询问站根据在接收反射调制微波的询问站解码的识别二进制码向具有响应器设备的车辆发送调频连续微波。 调制可以在两个不同频率进一步进行频率调制，或者可以被调制以给出具有不同宽度的解码脉冲。
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公开(公告)号：US3697022A
公开(公告)日：1972-10-10
申请号：US3697022D
申请日：1970-07-06
Applicant: SFIM
Inventor： AUTECHAUD DENIS , GRISARD JEAN-CLAUDE
CPC classification number: G01S1/14 , G05D1/0676 , G05D1/0858
Abstract: A method of guiding aircraft to effect an automatic approach to a landing place in which radar waves are transmitted to be received by the flight controls of the aircraft. The radar waves are transmitted from the ground at a carrier frequency of the order of gigahertz and define a radioelectric guiding axis situated at the intersection of a vertical radioelectric plane of alignment and a radioelectric descent plane perpendicular to the vertical plane and inclined to the horizontal. The method is particularly suitable for use with helicopters. Apparatus for carrying out the method includes a transmitter on the ground for transmitting radar waves of very short wavelength and equipment on board the helicopter comprising a receiver for the radar waves connected by a coupler to an automatic pilot of the helicopter flight controls.
Abstract translation: 一种引导飞机实现自动接近雷达波被传送到飞机的飞行控制的接收地点的方法。 雷达波以千兆赫兹的载波频率从地面传输，并且定义了位于垂直于垂直方向的垂直放射线平面与垂直于垂直平面且与水平方向倾斜的放射性下降平面的交点处的放射线引导轴。 该方法特别适用于直升机。 用于执行该方法的装置包括在地面上用于发射非常短波长的雷达波的发射机和直升机上的设备，包括用于由耦合器连接到直升机飞行控制的自动飞行员的雷达波的接收器。
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公开(公告)号：US3665496A
公开(公告)日：1972-05-23
申请号：US3665496D
申请日：1970-05-20
Applicant: SFIM
Inventor： DONJON JACQUES
IPC: H03K17/693 , H04J3/04 , H03K17/00
CPC classification number: H04J3/047 , H03K17/693
Abstract: In a sampling device for receiving simultaneously several electrical signals at different inputs and successively sampling them in predetermined order, there is provided a priming gate for each input, the priming gates being controlled in succession by a ring counter such that the samples taken from each input appear in succession at a single output.
Abstract translation: 在用于同时接收不同输入的几个电信号并以预定顺序连续采样它们的采样装置中，为每个输入提供了一个启动门，该启动门由环形计数器依次控制，使得从每个输入 在单个输出中连续出现。
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公开(公告)号：US3836965A
公开(公告)日：1974-09-17
申请号：US32828873
申请日：1973-01-31
Applicant: FAB D INSTR DE MEASURE SFIM SO
Inventor： PRETI J
CPC classification number: G08G1/01
Abstract: A vehicle presence detector circuit for the control of coloured light traffic signals in which the output of a Doppler radar system, representing the speed of vehicles, operates a relay when the speed drops below a threshold value and the relay is only reset when the speed signal exceeds a higher threshold value.
Abstract translation: 一种用于控制彩色光交通信号的车辆存在检测器电路，其中表示车辆速度的多普勒雷达系统的输出在速度低于阈值时操作继电器，并且仅当速度信号 超过较高的阈值。
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