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公开(公告)号：US3760228A
公开(公告)日：1973-09-18
申请号：US3760228D
申请日：1972-10-05
发明人： UCHIDA K
摘要： A protecting circuit of this invention comprises a transistor circuit proof against higher voltage, connected in series between one circuit having the possibility that the overvoltage is supplied to it, and another circuit to be protected against the overvoltage, a resistance circuit supplying a base current to a transistor of the said transistor circuit, a detecting resistance connected in series with the said transistor circuit proof against higher voltage, a control circuit connected in series with the said resistance circuit supplying the base current and connected to control the said transistor circuit proof against higher voltage by the ON-OFF operation depending on the growth of the voltage drop across the said detecting resistance, a diode circuit proof against higher voltage, connected in series with the said transistor circuit proof against higher voltage to prevent a higher reverse voltage from being applied to the said transistor circuit proof against higher voltage, and a diode connected essentially in parallel with the said circuit to be protected against the overvoltage and connected so as to keep a conductive state when the overvoltage is supplied to the said circuit having the possibility that the overvoltage is supplied to it. It has normally little influence on the supply of a current, and functions to protect a circuit when the overvoltage is applied.
摘要翻译： 本发明的保护电路包括一个可以抵抗较高电压的晶体管电路，串联连接在一个具有过电压供应的电路之间，另一个被保护的电路不受过电压的影响;将基极电流提供给 所述晶体管电路的晶体管，与所述晶体管电路串联连接的检测电阻，以抵抗较高的电压;控制电路，与所述电阻电路串联连接，提供基极电流，并连接以控制所述晶体管电路抵抗较高的电压 根据所述检测电阻两端的电压降的增长，通过ON-OFF操作的电压，抗更高电压的二极管电路，与所述晶体管电路串联连接以抵抗较高的电压，以防止施加较高的反向电压 到所述晶体管电路，以抵抗较高的电压，和a 二极管基本上与所述电路并联连接以防止过压并被连接，以便当过电压被提供给具有向其提供过电压的可能性的电路时保持导通状态。 它对电流的供给通常影响不大，并且在施加过电压时保护电路的功能。
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92.发明授权
公开(公告)号：US3742372A
公开(公告)日：1973-06-26
申请号：US3742372D
申请日：1969-08-20
CPC分类号： G01R13/32 , G11C27/026
摘要： In a system for deriving a synchronizing output signal by sampling the input signal with the derived output signal, a control signal is derived in response to the sampled asynchronous condition of the input and output signals for adjusting the frequency of the output signal to achieve the synchronous condition. The frequency adjustment progresses over a predetermined range and is reset when it reaches the end of the range. The adjustment is advanced by a time derivative signal derived from the asynchronous condition and is arrested by the time derivative being minimum which corresponds to the synchronous condition.
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公开(公告)号：US3708692A
公开(公告)日：1973-01-02
申请号：US3708692D
申请日：1971-05-04
发明人： MATUOKA H
CPC分类号： H03K4/56
摘要： In a ramp voltage wave generating circuit, there are provided a Miller''s integrator including an amplifier, a capacitor connected in parallel with the amplifier and a resistor with one terminal connected to the input side of the amplifier; a source of constant current current connected to the other terminal of the resistor; first means for maintaining at a constant value the reference potential at the output terminal of the integrator in the absence of an input signal; second means for maintaining at the constant value the reference potential in the presence of the input signal; and a three terminal active element with two terminals connected to the second means and to the source of the input signal and the remaining terminal connected to a source of reference potential.
摘要翻译： 在斜坡电压波生成电路中，提供了一个米勒积分器，其包括放大器，与放大器并联连接的电容器和一个电阻器，一个端子连接到放大器的输入端; 连接到电阻器的另一个端子的恒流电流源; 第一装置，用于在不存在输入信号的情况下将恒定值保持在积分器的输出端的参考电位; 在存在输入信号的情况下将参考电位维持在恒定值的第二装置; 以及具有两个端子连接到第二装置和输入信号源的三端有源元件，而剩余端子连接到参考电位源。
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公开(公告)号：US3671673A
公开(公告)日：1972-06-20
申请号：US3671673D
申请日：1971-04-06
发明人： UCHIDA KOZO , TSUJI TOSHIYUKI
摘要： A signal switching circuit operable in response to a voice signal but not operable in response to an audible periodic signal or signals, in which a pair of signal convertors having different trigger levels from each other are provided to generate a first pulse train and a second pulse train in response to respective intersections of the instantaneous level of the voice signal with the different trigger levels. A switching circuit is switched to a desired state when a difference between respective number of pulses of the first pulse train and the second pulse train reaches a predetermined value.
摘要翻译： 信号切换电路响应于语音信号而可操作，但是响应于可听的周期性信号而不可操作，其中提供具有彼此具有不同触发电平的一对信号转换器以产生第一脉冲串和第二脉冲 响应于语音信号的瞬时电平与不同的触发电平的各个交叉点的列车。 当第一脉冲串和第二脉冲串的脉冲数相差达到预定值时，切换电路切换到期望状态。
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公开(公告)号：US3665324A
公开(公告)日：1972-05-23
申请号：US3665324D
申请日：1970-06-12
发明人： NAKAYA NAOHISA
CPC分类号： G11C27/024 , G01R13/342 , H03K5/135
摘要： An improved trigger controlling method of the present invention uses a memory circuit for storing a signal which is proportional to the differentiated waveform of a sampled observing signal, and the differentiated waveform is controlled by the signal stored in the memory circuit. As a result of this, the improved method of the present invention provides a trigger signal which is obtained automatically and in a stable condition, an output pulse synchronized with an input observing signal for all magnitudes of the input observing signal which is to be applied to a sampling device such as a sampling oscilloscope.
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公开(公告)号：US3638187A
公开(公告)日：1972-01-25
申请号：US3638187D
申请日：1970-05-28
CPC分类号： G06K11/02
摘要： In an automatic curve tracing system wherein an area including a curve to be traced is subjected to a round scanning operation of a detector to produce a positional information and the detector is moved in a predetermined direction over a predetermined direction in response to the positional information, there is provided apparatus for processing an acute angle included in the curve including means to store a previous tracing direction and means to determine a particular direction having a minimum difference with respect to the previous tracing direction and within prescribed limits.
摘要翻译： 在自动曲线跟踪系统中，其中包括要跟踪的曲线的区域经受检测器的圆形扫描操作以产生位置信息，并且响应于位置信息，检测器沿预定方向在预定方向上移动， 提供了用于处理包括在曲线中的锐角的装置，包括用于存储先前的跟踪方向的装置和用于确定相对于先前的跟踪方向具有最小差异并在规定限度内的特定方向的装置。
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公开(公告)号：US3617122A
公开(公告)日：1971-11-02
申请号：US3617122D
申请日：1969-02-20
发明人： SAITO AKIRA
CPC分类号： G03G15/26
摘要： Disclosed herein is an improved copying apparatus provided with an improved holding device. A typical device for holding the original, according to the invention, comprises a rectangular frame and a transparent glass plate disposed at a bottom portion of the frame, and an original supporting plate movably disposed under the transparent glass plate in such a way that the original supporting plate can be pressed upwards. A cushion may be secured to an upper surface of the supporting plate. An optical means for projecting an image upon a copy paper, which is held in a stational condition during the copying operation, is disposed above the glass plate so that the original can be placed on the supporting plate in a condition wherein it faces upward. Thus, when a certain number of copies are required to be made from a series of originals in a book form, the pages can be turned by lowering the supporting plate without taking off the originals from the supporting plate.
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98.发明授权
公开(公告)号：US3609404A
公开(公告)日：1971-09-28
申请号：US3609404D
申请日：1969-09-15
发明人： UCHIDA KOZO
摘要： A clock pulse generator for word pulses is comprised of a signal generator, a distributor to divide the signal generated by the signal generator into a plurality of outputs, a plurality of parallel circuits connected to receive the divided signals, each circuit including a serially connected delay circuit and a pulser, and a mixer to combine outputs from the parallel circuits characterized in that the respective parallel circuits have equal delay time difference.
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公开(公告)号：US3595539A
公开(公告)日：1971-07-27
申请号：US3595539D
申请日：1970-01-12
发明人： ISIGAKI SHINICHI , KIMURA TAKUHEI
CPC分类号： B05D3/0254 , B29C65/18 , B29C65/305 , B29C65/4815 , B29C65/486 , B29C65/4875 , G03G15/2053
摘要： A thermal apparatus for fixing thermoplastic resinous powder which has an improved heating surface whereon numerous specifically patterned and arranged fine recesses and protuberances are formed. The specific recesses and protuberances are very effective for eliminating accidental transfer of a resinous layer, to be fixed on an article''s surface, onto the heating surface. The thermal fixing apparatus is useful for electrophotography, electrostatic printing, powder-painting, powder-photogravure and powder-screen printing.
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公开(公告)号：US3564427A
公开(公告)日：1971-02-16
申请号：US3564427D
申请日：1969-08-04
发明人： UCHIDA KOZO
CPC分类号： H03K5/135
摘要： AN IMPROVED SYNCHRONIZING CIRCUIT FOR OBTAINING AN OUTPUT PULSE OF LOW REPETITION RATE, WHICH IS SYNCHRONIZED WITH AN INPUT OF HIGH FREQUENCY, IN A JITTERLESS AND STABLE CONDITION. THE SYNCHRONIZING CIRCUIT IS SWITCHES FROM A WAITING CONDITION TO AN INOPERATIVE CONDITION BY THE HIGH FREQUENCY INPUT SIGNAL AND THEN SWITCHED BACK FROM THE INOPERATIVE CONDITION TO THE WAITING CONDITION WHICH IS GENERATED A PULSE BY ONE PULSE BEFORE A SYNCHORIZING PULSE OF THE INPUT SIGNAL.
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