Exhaust-responsive engine speed and condition indicator
    21.
    发明授权
    Exhaust-responsive engine speed and condition indicator 失效
    排气响应发动机转速和状态指示器

    公开(公告)号:US3908167A

    公开(公告)日:1975-09-23

    申请号:US47644474

    申请日:1974-06-05

    Applicant: RCA CORP

    Abstract: The speed in RPM and the condition, of internal combustion engines is determined from the engine exhaust. An engine has x ignitions per second depending on engine speed, has y ignitions per revolution of the crankshaft depending on number of cylinders and whether two-stroke or four-stroke cycle, and has an engine speed in rpm equal to x times the constant 60/y. A light beam is projected from a source through the exhaust gas exiting from the engine to a photodetector to produce an electrical signal having a frequency which varies over a predetermined range determined by the operating speed range of the engine. A band pass filter passes the frequencies in the predetermined range to a phaselocked oscillator. The error signal developed to make the oscillator track the frequency of the signal varies in accordance with engine speed, and is applied to an electrical meter calibrated to indicate engine speed in revolutions per minute. Engine condition is indicated by an elapsed time counter measuring the time taken in an acceleration burst test to accelerate from a low or idle speed to a high or top speed.

    Abstract translation: 从发动机排气确定内燃机的转速和条件。 根据发动机转速,发动机每秒可以发出x次点火,根据气缸数量,曲轴每转一次是否有点火,以及二冲程还是四冲程循环,发动机转速等于常数60的x倍 / y。 光束从源极通过从发动机排出的废气投射到光电检测器,以产生频率在由发动机的运行速度范围确定的预定范围内变化的电信号。 带通滤波器将预定范围内的频率通过锁相振荡器。 开发的使振荡器跟踪信号频率的误差信号根据发动机转速而变化,并被应用于校准为指示每分钟转数的发动机转速的电表。 发动机状态由经过的时间计数器指示,测量在从低速或怠速转速到高速或最高速度加速的加速度猝发测试中所花费的时间。

    Electronic scoring system for bowling establishments
    22.
    发明授权
    Electronic scoring system for bowling establishments 失效
    保龄球馆电子计分系统

    公开(公告)号:US3907290A

    公开(公告)日:1975-09-23

    申请号:US37264773

    申请日:1973-06-22

    Applicant: RCA CORP

    CPC classification number: A63D5/04 A63D2005/048

    Abstract: An automatic scoring system for a plurality of bowling lanes is disclosed which employs a central control unit including a general purpose mini-computer having a read-only memory programmed to control the processor in the computation and display of bowling scores. The system is constructed to be easily expanded by adding a player console and an electronic module for each added pair of bowling lanes. Bowling score sheet information is displayed on cathode ray tube display devices at player and proprietor locations. Pinfall information may be introduced manually or by automatic pinfall sensors.

    Abstract translation: 公开了一种用于多个保龄球道的自动评分系统,其采用包括通用微型计算机的中央控制单元,所述微型计算机具有被编程为在计算和显示保龄球分数时控制处理器的只读存储器。 该系统被构造为通过为每个增加的保龄球道添加一个播放器控制台和电子模块来容易地扩展。 保龄球分数信息显示在玩家和所有者位置的阴极射线管显示装置上。 引脚信息可能手动引入或通过自动引脚传感器引入。

    Apparatus for copying an electrostatic charge pattern in intensified form
    23.
    发明授权
    Apparatus for copying an electrostatic charge pattern in intensified form 失效
    用于以增强形式复制静电荷图案的装置

    公开(公告)号:US3906501A

    公开(公告)日:1975-09-16

    申请号:US49635974

    申请日:1974-08-09

    Applicant: RCA CORP

    CPC classification number: G03G15/045 G03G15/18

    Abstract: Apparatus for reproducing, on an electrically insulating film, an electrostatic charge pattern in an intensified form comprises two cylinders, disposed parallel to each other, and apparatus to reciprocate them in opposite directions of rotation with respect to each other. The image- bearing surface is on one cylinder; and the film, on which the charge pattern is to be reproduced, has opposite ends secured to the two cylinders, respectively. Grounded wetted sponges are disposed adjacent opposite surfaces of the film so as to first induce a monopolar charge pattern on the film, during one direction of rotation of the cylinders, and then to induce a bipolar pattern on the film, during an opposite direction of rotation of the cylinders.

    Abstract translation: 用于在电绝缘膜上再现强化形式的静电荷图案的装置包括彼此平行设置的两个气缸,以及使它们在相对于彼此的相反旋转方向往复运动的装置。 图像承载面位于一个气缸上; 并且其上要再现电荷图案的胶片分别具有固定到两个气缸的相对端。 接地的湿润海绵被设置在膜的相对表面附近,以便首先在圆筒的一个旋转方向上在膜上引起单极电荷图案,然后在相反的旋转方向上引起薄膜上的双极图案 的气瓶。

    Digital tuning of voltage control television tuners
    24.
    发明授权
    Digital tuning of voltage control television tuners 失效
    电压调节器的数字调谐

    公开(公告)号:US3906351A

    公开(公告)日:1975-09-16

    申请号:US43438374

    申请日:1974-01-18

    Applicant: RCA CORP

    CPC classification number: H03J7/10 H03J5/0254 H03M1/74 H04N5/44582

    Abstract: A television channel address system incorporates ten touch buttons for digitally addressing a tuner to select a desired television channel. The numerical channel command is converted into an analog tuning voltage for tuning an associated voltage controlled tuner. Automatic fine tuning voltage developed in the television receiver modifies the developed analog tuning voltage for precisely placing the tuner on the desired channel frequency.

    Abstract translation: 电视频道地址系统包含十个触摸按钮,用于数字地寻址调谐器以选择所需的电视频道。 数字通道命令被转换成模拟调谐电压,用于调谐相关的压控调谐器。 在电视接收机中开发的自动微调电压修改了开发的模拟调谐电压,以将调谐器精确地放置在期望的频道频率上。

    Combined amplifiers which consume substantially constant current
    25.
    发明授权
    Combined amplifiers which consume substantially constant current 失效
    消耗基本恒定电流的组合放大器

    公开(公告)号:US3904973A

    公开(公告)日:1975-09-09

    申请号:US46284074

    申请日:1974-04-22

    Applicant: RCA CORP

    CPC classification number: G05F1/46

    Abstract: First and second amplifiers which consume varying currents are combined in such a manner as to require a common substantially constant power supply current. An energy storage device coupled to both amplifiers stores energy during periods of low current consumption by the first of the amplifiers. This stored energy is then provided for the second amplifier during periods of high current consumption by the first. A control circuit is provided which allows the first amplifier priority in fulfilling its current requirements.

    Abstract translation: 消耗变化电流的第一和第二放大器以这样的方式组合,以便需要基本上恒定的电源电流。 耦合到两个放大器的能量存储装置在第一放大器的低电流消耗期间存储能量。 然后在第一放大器的高电流消耗期间,为第二放大器提供该存储的能量。 提供了一种控制电路,其允许第一放大器优先级满足其当前要求。

    Transistor base biasing using semiconductor junctions
    27.
    发明授权
    Transistor base biasing using semiconductor junctions 失效
    使用半导体结的晶体管基极偏置

    公开(公告)号:US3903479A

    公开(公告)日:1975-09-02

    申请号:US43603974

    申请日:1974-01-24

    Applicant: RCA CORP

    CPC classification number: H03F3/3096 H03F1/302

    Abstract: A multiple base-emitter potential (VBE) supply is direct coupled via a semiconductor junction to the base electrode of a ''''grounded-emitter'''' amplifier transistor to provide forward bias to its base-emitter junction. The semiconductor junction functions as a resistance coupling element, coupling a source of input signal to the base-emitter junction of the amplifier transistor.

    Abstract translation: 多个基极 - 发射极电位(VBE)电源经由半导体结直接耦合到“接地 - 发射极”放大器晶体管的基极,以向其基极 - 发射极结提供正向偏压。 半导体结用作电阻耦合元件,将输入信号源耦合到放大器晶体管的基极 - 发射极结。

    Print actuator arrangement and encoder
    28.
    发明授权
    Print actuator arrangement and encoder 失效
    打印机执行器安装和编码器

    公开(公告)号:US3901371A

    公开(公告)日:1975-08-26

    申请号:US29738572

    申请日:1972-10-13

    Applicant: RCA CORP

    CPC classification number: B41J1/24 B41J1/26 Y10S400/901

    Abstract: A type carrier presents characters serially to a print station which includes a recording medium. A signal controlled actuator at the print station is interposed in the print character path just before the desired character arrives and is struck on an angled cam surface by the character causing the character to strike the recording medium and forcing the actuator away from the character path. A binary encoder which issues signals determinative of what character is at the print station issues as many as 3/2 . 2n unique signals with n code tracks and n + 1 transducers.

    Charge amplifier
    29.
    发明授权
    Charge amplifier 失效
    充电放大器

    公开(公告)号:US3900743A

    公开(公告)日:1975-08-19

    申请号:US39355473

    申请日:1973-08-31

    Applicant: RCA CORP

    CPC classification number: H03F3/005 G11C27/04 H01L27/1055 H03F3/16

    Abstract: Amplifier circuits including a transistor having its control element connected to one terminal of a first capacitor and having one end of its conduction path connected to one terminal of a second capacitor of greater capacity than the first capacitor. A pulse applied to the other terminal of the second capacitor is coupled through the capacitor to the transistor. The pulse is of sufficient amplitude and polarity to enable conduction through the transistor causing it to charge or discharge the second capacitor an amount proportional to the signal present at said first capacitor. The first capacitor may be the output of a first charge transfer stage register and the second capacitor may be the input of a second charge transfer register.

    Dual mode deflection synchronizing system
    30.
    发明授权
    Dual mode deflection synchronizing system 失效
    双模偏转同步系统

    公开(公告)号:US3899635A

    公开(公告)日:1975-08-12

    申请号:US43804774

    申请日:1974-01-30

    Applicant: RCA CORP

    CPC classification number: H04N5/12

    Abstract: A dual mode deflection synchronizing system includes a resettable counter which generates noise-free internal synchronizing signals and signals representative of the interval during which external vertical synchronizing signals should be received provided the counter is properly synchronized. A sync signal verification detector is coupled to the source of external vertical sync signals and to a mode switch so that if the external signals arrive during this prediction interval as determined by the sync signal verification detector the system continues to operate in a synchronized mode on its internally generated synchronizing signals. If the external signals do not arrive during this prediction interval, the mode switch switches the system into a non-synchronized mode. A vertical sync signal detector which is also coupled to the source of external sync signals and to the mode switch begins to search for an external signal which has the time duration characteristic of an authentic external synchronizing signal. Until such a signal is received, the system continues to be synchronized by internal synchronizing signals generated by the resettable counter. When such a signal is received, the vertical sync signal detector resets the counter to correct its synchronization with the received external vertical synchronizing signal and toggles the mode switch to return the system to its synchronized mode of operation.

    Abstract translation: 双模偏转同步系统包括可复位计数器,该计数器产生无噪声的内部同步信号和表示在计数器被正确同步的情况下应当接收外部垂直同步信号的间隔的信号。 同步信号验证检测器耦合到外部垂直同步信号源和模式开关,使得如果外部信号在由该同步信号验证检测器确定的该预测间隔期间到达,则系统在其同步模式下继续工作 内部产生的同步信号。 如果外部信号在该预测间隔期间未到达,则模式切换将系统切换到非同步模式。 也耦合到外部同步信号源和模式开关的垂直同步信号检测器开始搜索具有真实外部同步信号的持续时间特性的外部信号。 在接收到这样的信号之前,系统通过可复位计数器产生的内部同步信号继续同步。 当接收到这样的信号时,垂直同步信号检测器复位计数器以校正其与所接收的外部垂直同步信号的同步,并且切换模式开关以将系统返回到其同步操作模式。

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