Optically-scanned liquid-crystal projection display
    192.
    发明授权
    Optically-scanned liquid-crystal projection display 失效
    光学扫描液晶投影显示

    公开(公告)号:US3723651A

    公开(公告)日:1973-03-27

    申请号:US3723651D

    申请日:1971-12-27

    Applicant: RCA CORP

    Inventor: GOROG I

    CPC classification number: G02F1/135 H04N5/7441

    Abstract: A display system is disclosed which includes a multi-layer light control panel having a first transparent electrode, a photoconductor, a normally-transparent liquid crystal, and a second transparent electrode. A laser light beam is modulated with video information and raster scanned to the photoconductor. A direct-current potential is applied across the electrodes during the scanning of a frame, so that spatial variations are created in the light transmissivity of the liquid crystal. During a first portion of a vertical retrace period, a short circuit is placed across the electrodes, and a flash lamp is projected through the light control panel to a display screen. During a second portion of the vertical retrace period, an alternating current potential is applied to the electrodes to restore the liquid crystal to its transparent condition.

    Abstract translation: 公开了一种显示系统,其包括具有第一透明电极,光电导体,常透明液晶和第二透明电极的多层光控制面板。 用视频信息调制激光束,并对光电导体进行光栅扫描。 在扫描框架期间,跨电极施加直流电势,使得在液晶的光透射率中产生空间变化。 在垂直回扫周期的第一部分期间,跨越电极放置短路,闪光灯通过光控制面板投射到显示屏。 在垂直回扫周期的第二部分期间,将交流电势施加到电极以将液晶恢复到其透明状态。

    Fabrication of focus grill type cathode ray tubes
    193.
    发明授权
    Fabrication of focus grill type cathode ray tubes 失效
    FOCUS GRILL型阴极射线管的制造

    公开(公告)号:US3722044A

    公开(公告)日:1973-03-27

    申请号:US3722044D

    申请日:1971-11-10

    Applicant: RCA CORP

    Inventor: LAW H

    CPC classification number: H01J29/803

    Abstract: Prior to assembly of the envelope of a focus grill tube, the cup-shaped panel portion of the envelope is wound with a wire helix which is disposed around and along the panel, each turn of the helix extending across the open side of the panel in predisposed relation with a pattern of phosphor strips on the bottom wall of the panel. Preferably, the helix turns are disposed in grooves in the end surface of the side wall of the panel, and portions of each helix turn are disposed about a member having a thermal expansion greater than that of the helix wire.

    Abstract translation: 在组装焦点格栅管的外壳之前,外壳的杯形面板部分用设置在面板周围和沿着面板的线螺旋缠绕,螺旋线的每一圈在面板的开口侧延伸 与面板底壁上的荧光条的图案的倾向关系。 优选地,螺旋匝设置在面板的侧壁的端表面中的凹槽中,并且每个螺旋匝的部分围绕具有大于螺旋线的热膨胀的构件设置。

    Variable delay line utilizing one part reflection type amplifier
    194.
    发明授权
    Variable delay line utilizing one part reflection type amplifier 失效
    可变延迟线利用一个部分反射型放大器

    公开(公告)号:US3721924A

    公开(公告)日:1973-03-20

    申请号:US3721924D

    申请日:1971-05-19

    Applicant: RCA CORP

    CPC classification number: H01P9/00

    Abstract: A microwave delay line includes a first path of negligible delay time, a second path providing a predetermined delay time determined by a delay line section terminated by a one port reflection type amplifier, and a control for selectively feeding a microwave signal over one of the paths. A signal can be held in the delay line section of the second path to thereby impart a desired delay to that signal.

    Abstract translation: 微波延迟线包括可忽略的延迟时间的第一路径,提供由由一个端口反射型放大器端接的延迟线段确定的预定延迟时间的第二路径,以及用于通过一个路径选择性馈送微波信号的控制 。 信号可以保持在第二路径的延迟线部​​分中,从而给该信号赋予期望的延迟。

    Charge coupled memory
    195.
    发明授权
    Charge coupled memory 失效
    充电联想记忆

    公开(公告)号:US3720922A

    公开(公告)日:1973-03-13

    申请号:US3720922D

    申请日:1971-03-17

    Applicant: RCA CORP

    Inventor: KOSONOCKY W

    CPC classification number: H01L27/10805 G11C11/35 Y10S148/053 Y10S148/122

    Abstract: A plurality of storage electrodes, extending in the column direction, each electrode coupled to a common semiconductor substrate at spaced regions along its length, each such region comprising a minority carrier storage location. A plurality of digit lines are formed in the substrate, each such line being coupled to a column of locations. These lines serve as sources of minority carriers and as sense lines. A plurality of word lines extending in the row direction are located one over each row of locations. Each word line can be operated to create conduction channels between the digit lines and the storage locations, respectively, along that word line.

    Abstract translation: 沿列方向延伸的多个存储电极,每个电极沿着其长度在间隔的区域耦合到公共半导体衬底,每个这样的区域包括少数载流子存储位置。 在衬底中形成多个数字线,每个这样的线耦合到一列位置。 这些线作为少数民族运动员的来源,作为感觉线。 在行方向上延伸的多个字线位于每行的位置上。 可以操作每个字线,以沿着该字线分别在数字线和存储位置之间产生传导通道。

    Electroless copper plating solutions with accelerated plating rates
    196.
    发明授权
    Electroless copper plating solutions with accelerated plating rates 失效
    电镀铜镀层解决方案具有加速镀层率

    公开(公告)号:US3720525A

    公开(公告)日:1973-03-13

    申请号:US3720525D

    申请日:1971-08-16

    Applicant: RCA CORP

    CPC classification number: C23C18/40

    Abstract: THE RATE OF PLATING COPPER ONTO AN ACTIVE METALLIC SURFACE OF A SUBSTRATE FROM AN ELECTROLESS COPPER PLATING SOLUTION IS ENHANCED BY ADDING TO THE PLATING SOLUTION AN IONIC COMPOUND CONSISTING OF EITHER AN ACETATE, A NITRATE, AN OXALATE, A LACTATE, A CHLORIDE, A TARTRATE, A FORMATE, A PHTHALAE, A TUNGSTATE, A MOLYBDATE, A CHLORATE, A PERCHLORATE, A CITRATE, A MOLONATE, OR MIXTURES THEREOF.

    Threshold gate circuits employing field-effect transistors
    197.
    发明授权
    Threshold gate circuits employing field-effect transistors 失效
    采用现场效应晶体管的栅极电路

    公开(公告)号:US3715603A

    公开(公告)日:1973-02-06

    申请号:US3715603D

    申请日:1971-10-28

    Applicant: RCA CORP

    Inventor: LERCH J

    CPC classification number: H03K19/0948

    Abstract: A threshold gate comprising a plurality of complementarysymmetry, field-effect transistor inverters, each inverter receiving at its common gate connection a different input signal and each connected at its output terminal to a common circuit output terminal. The gate may have inputs all of the same weight or, with appropriately chosen values of transistor conduction channel impedance or parallel connected inverters, may have inputs of different weight.

    Abstract translation: 一种阈值门,包括多个互补对称的场效应晶体管反相器,每个反相器在其公共栅极连接处接收不同的输入信号,并且每个反相器在其输出端连接到公共电路输出端。 栅极可以具有相同重量的输入,或者具有适当选择的晶体管导通通道阻抗值或并联逆变器的值可能具有不同重量的输入。

    Dual mode automatic frequency controlled oscillator system
    198.
    发明授权
    Dual mode automatic frequency controlled oscillator system 失效
    双模自动频率控制振荡器系统

    公开(公告)号:US3715499A

    公开(公告)日:1973-02-06

    申请号:US3715499D

    申请日:1970-12-03

    Applicant: RCA CORP

    Inventor: STECKLER S

    CPC classification number: H04N5/12 H03L7/107

    Abstract: A dual mode automatic phase controlled oscillator system employs multiple keyed phase comparators to produce control signals which are applied to lock the oscillator frequency and phase to a reference signal. One of the keyed comparators is continuously employed to produce an in-sync control signal. A coincidence gate is utilized to detect the existence of out-of-sync conditions, and associated circuitry produces a mode control signal which is applied to activate the second keyed phase comparator upon such occurrence. The second keyed comparator is thereby selectively operative during out-of-sync conditions to develop an additional control signal to enhance the pull-in characteristics of the system.

    Abstract translation: 双模式自动相位振荡器系统采用多个键控相位比较器来产生控制信号,该信号被施加以将振荡器频率和相位锁定到参考信号。 键控比较器之一被连续地用于产生同步控制信号。 使用符合门来检测不同步状态的存在,并且相关联的电路产生模式控制信号,该模式控制信号在这种情况下用于激活第二键控相位比较器。 因此,第二键控比较器在不同步条件下选择性地操作,以开发附加的控制信号以增强系统的拉入特性。

    High voltage protection circuit
    199.
    发明授权
    High voltage protection circuit 失效
    高压保护电路

    公开(公告)号:US3715492A

    公开(公告)日:1973-02-06

    申请号:US3715492D

    申请日:1971-05-18

    Applicant: RCA CORP

    Inventor: FITZGERALD W

    CPC classification number: H04N3/20

    Abstract: A voltage dependent resistor is cooperatively coupled with a keyed automatic gain control device to provide control signals sufficient to bias off the radio and intermediate frequency amplifier stages of a television receiver when the amplitude of the keying pulse reflects an open-circuiting of a horizontal retrace capacitor which raises the developed high voltage to an excessive level.

    Abstract translation: 电压相关电阻器与键控自动增益控制装置协作地耦合以提供足够的偏置关闭电视接收机的无线电和中频放大器级的控制信号,当键控脉冲的幅度反映水平回扫电容器的开路时 这将发展中的高压提高到过高的水平。

    Shuttering apparatus for television cameras
    200.
    发明授权
    Shuttering apparatus for television cameras 失效
    电视摄像机的快门设备

    公开(公告)号:US3715486A

    公开(公告)日:1973-02-06

    申请号:US3715486D

    申请日:1971-03-19

    Applicant: RCA CORP

    Inventor: WRIGHT H DISCHERT R

    CPC classification number: H04N5/2254 G03B9/08

    Abstract: The apparatus is a generally opaque disc mounted in the camera tube light path for rotation about an axis vertically displaced from the light path and having two like, diametrically opposed and generally arcuate apertures with such configurations that different horizontal areas of the photosensitive target electrode of the tube are successively and equally exposed to light from a subject during each scanning field.

    Abstract translation: 该装置是安装在照相机管光路中的通常为不透明的光盘,用于围绕从光路垂直移位的轴线旋转,并且具有两个相似的,直径相对的和大体上为弓形的孔,其具有这样的构造,即,不同的水平面积的感光目标电极 管在每个扫描场期间连续地和平等地暴露于受试者的光。

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