公开(公告)号：US4030088A

公开(公告)日：1977-06-14

申请号：US516656

申请日：1974-10-21

申请人： David Jacob McCullough

发明人： David Jacob McCullough

IPC分类号： B66C15/04 ,  G01S11/02 ,  G01S19/48 ,  G08G9/02 ,  G08B21/00

CPC分类号： B66C15/045 ,  G01S11/02 ,  G08G9/02

摘要： A position detecting and control system for a vehicle includes a low frequency transmitter and associated antenna and a receiver and associated antenna, one of the antennas being mounted on the vehicle so the distance between the antenna carried by the vehicle and the other antenna is determined by the amplitude of the signal induced in the receiving antenna. The frequency of the transmitter is such that the distances to be monitored are a small fraction of the wavelength of the frequency involved, and any significant signal variations due to signal reflections which can reinforce or cancel the received signal are avoided. The system monitors at least two different spacings between the transmitting and receiving antennas where the signals received at the receiving antenna are of widely different orders of magnitude. Separate range detecting circuits are coupled to a common point of the receiver, each of which includes an attenuator at the input thereof for adjusting the level of the signal to be fed to an associated signal level detector which operates a control device when the signal at the receiver output point involved reaches a level indicating the associated spacing to be monitored.

摘要翻译： 一种用于车辆的位置检测和控制系统包括低频发射器和相关联的天线以及接收器和相关联的天线，其中一个天线安装在车辆上，使得由车辆携带的天线和另一个天线之间的距离由 在接收天线中感应信号的幅度。 发射机的频率使得要监测的距离是所涉及频率的波长的一小部分，并且避免了由于可以加强或消除接收信号的信号反射引起的任何显着的信号变化。 该系统监测发射天线和接收天线之间至少两个不同的间距，其中在接收天线处接收的信号的幅度差别很大。 单独的范围检测电路耦合到接收机的公共点，每个接收机的输入端包括衰减器，用于调节要馈送到相关联的信号电平检测器的信号的电平，该信号电平检测器操作控制装置，当信号处于 所涉及的接收机输出点达到指示要监视的相关间距的电平。

公开(公告)号：US4876709A

公开(公告)日：1989-10-24

申请号：US240702

申请日：1988-09-08

申请人： Max W. Rogers ,  Daniel R. Skinner

发明人： Max W. Rogers ,  Daniel R. Skinner

IPC分类号： H01Q1/22 ,  H01Q1/24 ,  H01Q1/44 ,  H04M1/02 ,  H04Q7/32

CPC分类号： H04M1/0202 ,  H01Q1/243

摘要： An antenna internally contained within a housing of a cordless telephone is configured generally as a plate disposed opposite the earphone transducer, and away from the user's face in position for normal use. The antenna is disposed to lie generally vertically, and is counterpoised against a generally vertically disposed circuit board. Configuring the antenna generally as a plate and placing it outboard away from the user's face minimizes detuning effects during normal handling in use. Optional side extensions to the plate increase the antenna capacitance. An optional counterpoising shield may be interposed between the receiver-transducer and the antenna plate to further minimize detuning effects. Mode switches are disposed in a position on the handset remote from the antenna to further minimize detuning effects during switching operations. A similar antenna may be disposed within the cordless telephone base unit with the antenna disposed remote from the surface on which the base unit is mounted, and further having its associated mode switch disposed at a location remote from the antenna so as to minimize detuning effects from proximity to metallic surfaces and mode switching.

摘要翻译： 内部容纳在无绳电话的壳体内的天线通常被配置为与耳机换能器相对设置的板，并且远离用户的脸部正常使用。 天线被设置为大致垂直地放置，并且与大致垂直布置的电路板相平衡。 通常将天线配置为平板，并将其放置在远离使用者脸部的位置，使正常使用过程中的失谐效应最小化。 板的可选侧面扩展增加了天线电容。 在接收器 - 换能器和天线板之间可以插入可选的平衡屏蔽件，以进一步最小化失谐效应。 模式开关设置在远离天线的手机上的位置，以进一步最小化开关操作期间的失谐效应。 类似的天线可以设置在无绳电话基座单元内，其中天线布置成远离安装有基座单元的表面，并且还具有设置在远离天线的位置处的相关联的模式开关，以便最小化从 靠近金属表面和模式切换。

公开(公告)号：US4439688A

公开(公告)日：1984-03-27

申请号：US255046

申请日：1981-04-17

申请人： Louis W. Schornack

发明人： Louis W. Schornack

IPC分类号： G04G15/00 ,  H05B37/02 ,  H01H9/00

CPC分类号： H05B37/0281 ,  G04G15/006 ,  H05B37/0209 ,  Y02B20/42 ,  Y10T307/76

摘要： An electrical controller, such as a controller timer for a home lighting circut, is connected so that a power switch like a triac controlled thereby replaces a conventional toggle switch operating in conjunction with another toggle switch in series therewith which can operate the controller. The timer is continuously coupled to the AC power system by permanent connections between the movable pole of the remaining toggle switch station and the load terminal of the triac of the controller and the power system. A stationary contact of the switch forms a control signal terminal which extends to a control input terminal of the controller. The controller may also include a depressible pushbutton or other on-off control switch which when successively operated generates pulses which toggle a control circuit to alternately render the triac conductive and non-conductive, and to program a controller-timer. The controller includes a voltage change pulser circuit whose input is coupled through the control input terminal of the timer to the stationary control contact of the single-pole switch, and which preferably generates the identical signal as is generated by depression of the pushbutton, when the signal condition on the stationary control contact either changes from a no-signal to a signal condition, or from a signal to a no-signal condition.

摘要翻译： 电气控制器，例如用于家庭照明电路的控制器定时器，被连接，使得像这样控制的三端双向可控硅开关的电源开关替代了可以操作控制器的另一拨动开关一起操作的常规拨动开关。 定时器通过剩余拨动开关站的可动极与控制器的三端双向可控硅开关的负载端子和电力系统之间的永久连接连续耦合到AC电力系统。 开关的固定触点形成延伸到控制器的控制输入端子的控制信号端子。 控制器还可以包括可按下的按钮或其他开 - 关控制开关，其在连续操作时产生触发控制电路以交替地使三端双向可控硅开关导通和不导通的脉冲，并且编程控制器定时器。 控制器包括电压变化脉冲发生器电路，其输入通过定时器的控制输入端耦合到单极开关的固定控制触点，并且其优选地产生与通过按压按钮产生的相同的信号，当 静态控制触点上的信号状态从无信号变化到信号状态，或从信号变为无信号状态。

公开(公告)号：US4349748A

公开(公告)日：1982-09-14

申请号：US22453

申请日：1979-03-21

申请人： Richard Goldstein ,  Louis W. Schornack

发明人： Richard Goldstein ,  Louis W. Schornack

IPC分类号： G04G15/00 ,  H05B37/02 ,  H01H43/04

CPC分类号： G04G15/006 ,  H05B37/0281 ,  Y02B20/42 ,  Y10T307/878 ,  Y10T307/944 ,  Y10T307/977

摘要： A timer system includes a power switch operable to power circuit closing and opening conditions, timing means for identifying various timing segments over a 24-hour period and marker storage means having respective power turn on and off marker storage locations assigned to the time intervals encompassing a 24-hour period. An on-off push button or other on-off control operates the power switch and may act as an aid in setting the markers in the storage means. The timer system may also include a rotatable present time setting dial, also adjustable to different positions representing the different time intervals, and a manually operable timer on-off setting member. For real time programming, control means respond to normal operation of the on-off control during a first 24-hour period, initially to set said markers in the storage locations. For fast programming, the control means responds to the successive advancement of said dial from a present time setting through said various positions and the selective operation of the push button or other on-off control to set the markers in the storage locations assigned to the time interval involved, which markers automatically control the operation of the power switch when the timer on-off setting member is in its timer-on position, except when overriden by operation of the on-off control.

摘要翻译： 定时器系统包括可操作以对电路关闭和打开条件供电的电源开关，用于在24小时内识别各种定时段的定时装置，以及具有分配给包含一个或多个时间间隔的时间间隔的相应电源打开和关闭标记存储位置的标记存储装置 24小时。 开关按钮或其他开 - 关控制操作电源开关，并且可以用于帮助将标记设置在存储装置中。 定时器系统还可以包括可旋转的当前时间设置拨盘，也可调节到表示不同时间间隔的不同位置，以及可手动操作的定时器开关设置部件。 对于实时编程，控制装置在第一个24小时期间响应于开/关控制的正常操作，最初将所述标记设置在存储位置。 为了快速编程，控制装置响应于从当前时间设置通过所述各种位置和按钮或其他开 - 关控制的选择性操作的连续提前，将标记设置在分配给时间的存储位置 间隔时间，当定时器开关设定部件处于其定时器开启位置时，哪个标记自动控制电源开关的操作，除了通过开关控制的操作进行覆盖。

公开(公告)号：US4135153A

公开(公告)日：1979-01-16

申请号：US792134

申请日：1977-04-29

申请人： Dennis C. Stone

发明人： Dennis C. Stone

IPC分类号： G01R31/26 ,  G01R31/22

CPC分类号： G01R31/2608

摘要： A transistor test circuit provides for the selection of preferably three widely differing test frequencies for testing transistors normally having respectively relatively small, intermediate and large frequency gain-bandwidth product characteristics. These test frequencies are each much greater than the assumed normal cut-off frequency of the transistors to be tested thereby, and preferably only a fraction of the frequency at which the current gain of normal transistors would decrease to one. The test circuit is designed to form a linear amplifier circuit with the transistor under test and is provided with an automatic base drive control circuit which provides a substantially fixed predetermined DC collector current, despite wide variations in the current gain between different transistors being tested. The circuit further includes an indicating means for displaying the product of the selected test frequency and the current gain of the transistor under test, as indicated by the amplitude of the amplified test frequency signal in the collector circuit of the transistor under test.

摘要翻译： 晶体管测试电路提供优选地选择三个广泛不同的测试频率，用于测试通常具有分别相对较小，中等和大频率增益带宽乘积特性的晶体管。 这些测试频率都远大于要测试的晶体管的假定正常截止频率，并且优选地，只有正常晶体管的电流增益将减小到1的频率的一部分。 测试电路被设计成与被测晶体管形成线性放大器电路，并且设置有自动基极驱动控制电路，其提供基本上固定的预定直流集电极电流，尽管在被测试的不同晶体管之间的电流增益的变化很大。 该电路还包括用于显示被测试晶体管的所选测试频率和当前增益的乘积的指示装置，如被测晶体管的集电极电路中放大的测试频率信号的幅度所示。

公开(公告)号：US4117400A

公开(公告)日：1978-09-26

申请号：US681487

申请日：1976-04-29

申请人： Harold Feldman

发明人： Harold Feldman

IPC分类号： G01R31/26

CPC分类号： G01R31/2608

摘要： The circuit includes sources of periodic, low duty cycle, load terminal energizing and control terminal driving pulse waveforms. During each cycle, the waveforms occur only during successive test intervals occupying only a small portion of each cycle. During each test interval a load terminal energizing pulse is generated to energize a transistor or FET device of a different conductivity type and a control terminal drive voltage is penetrated which initially is of a polarity which would render a transistor or FET device of the associated conductivity type non-conductive, and then switches to a voltage of opposite polarity to render such device fully conductive. There is provided means for selectively varying the control terminal driving current which flows in an operating device from a relatively high to a relatively low level. Signals are derived showing the transition in the conductive states of the devices under test during the polarity transition of the control terminal drive voltage waveform. A first detecting and storage circuit is provided which detects and stores the occurrence of a current transition during the first test interval showing a possibly properly operating device of one conductivity type, and a second detecting and storage circuit is provided which detects and stores the occurrences of a current transition during the second test interval showing a possibly properly operating device of the opposite conductivity type. The storage circuit sets a leakage and material type test voltage producing circuit to produce a test voltage of proper polarity, depending upon whether the possibly properly operating device is of one or the other conductivity type.

公开(公告)号：US3961242A

公开(公告)日：1976-06-01

申请号：US573374

申请日：1975-04-30

申请人： Gus C. Rose

发明人： Gus C. Rose

IPC分类号： G01R31/25 ,  G01R31/24

CPC分类号： G01R31/257

摘要： The emission of the various electron guns of a color cathode ray tube are measured and indicated preferably by a time sharing multiplexing technique where bright intensity producing emission generating voltages are fed between th cathode and control or accelerator electrodes of the various electron guns preferably in rapidly repeated sequence. The switching rate is preferably many times per second so the emission current values are displayed as steady indications on the faces of current meters with meter movements which respond to the average emission curent of the associated electron gun. A quick and convenient means for determining whether or not the ratio of the highest and lowest emission measurements fall within an acceptable range is provided by means which proportionately reduce the conduction periods of the electron guns, so the highest or lowest emission measurement falls along one margin of a band on the scale of the associated meter face whose opposite margin is at a value which indicates the limit of an acceptable highest to lowest emission ratio.

摘要翻译： 测量彩色阴极射线管的各种电子枪的发射，并且优选地通过时间分配复用技术来表示，其中，在各种电子枪的阴极和控制或加速器电极之间输入亮度产生发射电压的亮度优选快速重复 序列。 切换速率优选为每秒多次，因此发射电流值被显示为电流计的表面上的稳定指示，其具有响应于相关联的电子枪的平均发射电流的计量运动。 用于确定最高和最低发射测量值的比率是否落在可接受范围内的快速方便的手段是通过比例地减少电子枪的传导周期的手段来提供的，因此最高或最低的发射测量沿着一个边缘落下 在相关仪表的刻度上的带的相对边距是指示可接受的最高到最低发射比的极限的值。

公开(公告)号：US4881259A

公开(公告)日：1989-11-14

申请号：US294429

申请日：1989-01-06

申请人： James Scordato

发明人： James Scordato

IPC分类号： H04M1/65 ,  H04M1/663 ,  H04M1/725

CPC分类号： H04M1/65 ,  H04M1/663 ,  H04M1/725 ,  H04M1/72533

摘要： A cordless telephone and an answering machine of the remote-pickup type are provided as an integrated unit having the answering machine and telephone base unit integrated into a common housing. The remote handset contains circuitry for generating a command signal condition at the user's option which will operate the base unit to a "screening mode" wherein the activity on the telephone lines during the playback and record period is transmitted to the remote unit, but wherein audio pass-through from the base unit radio receiver is disabled. In the preferred form of the invention the command signal condition is in the form of a pilot tone of a given frequency, receipt of which by the base unit receiver disables audio pass-through. To enter two-way "talk" mode, a pilot tone of different frequency is also sent by the remote unit, loss of this tone being being to cause the base unit to cease transmitting to the remote unit.

摘要翻译： 提供遥控拾音器类型的无绳电话和应答机作为集成单元，其具有集成在公共壳体中的应答机和电话基座单元。 远程手机包含用于根据用户选择产生命令信号条件的电路，该命令信号条件将基本单元操作为“屏蔽模式”，其中在播放和记录期间电话线上的活动被发送到远程单元，但是其中音频 禁止从基本单元无线电接收器传递。 在本发明的优选形式中，命令信号条件是给定频率的导频音的形式，基本单元接收器的接收者禁止音频直通。 为了进入双向“通话”模式，远程单元也发送不同频率的导频音，这种音调的丢失是导致基本单元停止向远程单元的发送。

公开(公告)号：US4379245A

公开(公告)日：1983-04-05

申请号：US132090

申请日：1980-03-20

申请人： Richard Goldstein

发明人： Richard Goldstein

IPC分类号： H03K17/96 ,  H01L41/08

CPC分类号： H03K17/964

摘要： A manually operable pulse generating apparatus comprises a dial knob assembly having a outer grippable knob member rotatably mounted around an inner knob member connected to an operating shaft carrying a ratchet wheel-forming cam having saw-toothed ratchet teeth-forming lobes. Each lobe has a gradually rising leading side and a sharply dropping trailing side. The outer knob member is connected to the inner knob member through a one-way clutch so that the outer knob member can be rotated in one direction without rotating the inner knob member, the inner knob member rotating with the outer knob member when rotated in the opposite direction. Where the outer knob member is opaque, it contains numbered markings for identifying the degree of rotation imparted thereto relative to a stationary index mark on a control panel over which the dial knob assembly is mounted. For some applications, the outer knob member may be transparent in which case the numbered markings referred to are on the inner knob member. A pawl-forming, force-transmitting spring or spring-urged member normally rests in the crotch between successive ratchet teeth-forming lobes of the cam where it is in a partially tensed condition to form a detent for the shaft. The rotation of the outer knob member in said other direction rotates the cam and causes the pawl to ride up the gradually rising side of a cam lobe so that the tension in the pawl initially slowly increases. The tension on the spring or spring-urged member is coupled to a piezo-electric element which generates a damped sine waveform as the tension thereon is suddenly relieved as the end of the pawl falls into the crotch between a pair of cam lobes.

摘要翻译： 一种可手动操作的脉冲发生装置，包括拨动旋钮组件，其具有可旋转地安装在内部旋钮构件周围的外部可夹持旋钮构件，所述内部旋钮构件连接到操作轴，所述操作轴承载具有锯齿形棘轮形成凸角的棘轮形成凸轮。 每个叶都有一个逐渐上升的前方和一个急剧下降的后方。 外部旋钮部件通过单向离合器与内部旋钮部件连接，使得外部旋钮部件能够在一个方向上旋转而不旋转内部旋钮部件，内部旋钮部件在旋转时旋转外部旋钮部件 相反的方向。 在外部旋钮构件是不透明的情况下，其包含编号的标记，用于识别相对于安装拨盘旋钮组件的控制面板上的固定指示标记所赋予的旋转程度。 对于一些应用，外部旋钮构件可以是透明的，在这种情况下，所指的编号标记在内部旋钮构件上。 棘爪形成的力传递弹簧或弹簧推动构件通常搁置在凸轮的连续的棘齿形成凸角之间的裆部中，其处于部分张紧的状态，以形成用于轴的棘爪。 外旋钮构件在所述另一方向的旋转使凸轮旋转并使棘爪骑在凸轮凸角的逐渐上升的一侧，使得棘爪中的张力最初缓慢增加。 弹簧或弹簧推动构件上的张力耦合到压电元件，该压电元件产生阻尼正弦波形，因为当棘爪的端部落入一对凸轮凸角之间的裆部时，其上的张力突然释放。

公开(公告)号：US4131846A

公开(公告)日：1978-12-26

申请号：US805722

申请日：1977-06-13

申请人： Dennis C. Stone

发明人： Dennis C. Stone

IPC分类号： G01R1/30 ,  G01R15/00 ,  G01R15/10 ,  G06G7/26

CPC分类号： G01R1/30 ,  G01R15/005

摘要： In combination with a meter movement having a pointer movable over a variable value indicating scale having numbered variable value indicating marks forming respective scale segments having substantially different compression or expansion ratios and representing progressively increasing variable values over the entire extent of said segments, a meter control circuit comprising respective amplifiers for controlling the variation of pointer movement over said respective segments of said scale, each of the amplifiers being capable of producing an output which reaches a maximum possible output level when the signal fed to the input thereof is of a value which is to move the pointer of said meter movement to the uppermost point of the associated segment of the scale, means for summing the outputs of said respective amplifiers and feeding the same to said meter movement. Signal directing means are provided for respectively directing to said amplifiers signals resulting from the flow of respective incremental ranges of current values in said input circuits to the amplifiers to cause the meter movement pointer to traverse said respective segments of said scale. The signal directing means directs said signals to the amplifier associated with the next highest scale segment of said meter movement scale only after the output of the amplifier associated with the next lowest segment of the scale has reached its maximum output value.

摘要翻译： 结合具有可移动在可变值上的指示器的指示器，该指示器具有编号的变量值，该标度具有指示形成具有基本上不同的压缩或膨胀比的相应缩放部分的标记，并且表示在所述段的整个范围上逐渐增加的可变值， 电路包括用于控制所述刻度的所述各个段上的指针移动的变化的各个放大器，每个放大器能够产生一个输出，当输入到其输入端的信号为一个值时，该输出达到最大可能的输出电平 将所述仪表移动的指针移动到标尺的相关联的段的最高点，用于将所述各个放大器的输出相加并将其馈送到所述仪表运动的装置。 信号引导装置被提供用于分别引导到所述放大器的信号，所述信号是由所述输入电路中的各个当前值的增加范围流向放大器而产生的，以使得仪表移动指针穿过所述标尺的所述各个段。 信号指示装置仅在与标尺的下一个最低段相关联的放大器的输出已经达到其最大输出值之后，将所述信号引导到与所述仪表运动刻度的下一个最高刻度段相关联的放大器。