公开(公告)号：US3700802A

公开(公告)日：1972-10-24

申请号：US3700802D

申请日：1970-12-21

申请人： ZENITH RADIO CORP

发明人： MARKIN JOSEPH ,  SOBEL ALAN

IPC分类号： G02F1/135 ,  G09F9/30 ,  H04N9/12

CPC分类号： G09F9/30 ,  G02F1/135 ,  Y10S385/901

摘要： An image-display panel includes a plurality of light-displaying elements, such as electroluminescent capacitors or liquid crystals, disposed in an array of rows and columns. Associated with each light-displaying element is a photoconductor or other light-responsive device for activating the light-displaying elements. A pair of crossed arrays of fiber-optic light pipes have their crossings in juxtaposition with the photosensitive devices, the light pipes including localized light-emitting apertures near the crossings. A system is included for injecting light into the light pipes in a manner to provide systematic sequential scanning of the photosensitive devices by concurrent light emission from the localized apertures of selected lightconductive elements of both of the arrays. Light emitted from a single light-pipe aperture reduces the resistance of part of the associated photoconductor, but the resistance of the remaining part is sufficient to prevent the light-displaying element from functioning. When light is emitted from both light-pipe apertures associated with the photoconductor at a single display element, the photoconductor resistance is sufficiently reduced that the light-displaying element produces a useful output. In an alternative embodiment, the light pipes are utilized for scanning activation in but one direction, while electrical conductors are used to perform the coordinate scanning function.

摘要翻译： 图像显示面板包括排列成行和列的阵列的多个显示元件，例如电致发光电容器或液晶。 与每个光显示元件相关联的是用于激活光显示元件的感光体或其他光响应装置。 一对交叉的光纤光管阵列具有与光敏装置并置的交叉，光管包括在交叉点附近的局部发光孔。 包括用于将光注入光管的系统，以便通过来自两个阵列的所选择的导电元件的局部孔的并发发光来提供感光装置的系统顺序扫描。 从单个光管孔发射的光减少了相关光电导体的一部分的电阻，但是剩余部分的电阻足以防止光显示元件起作用。 当在单个显示元件处从与光电导体相关联的两个光管孔发射光时，光电导体电阻充分降低，使得光显示元件产生有用的输出。 在替代实施例中，光管用于沿一个方向扫描激活，而电导体用于执行坐标扫描功能。

公开(公告)号：US3691297A

公开(公告)日：1972-09-12

申请号：US3691297D

申请日：1971-05-06

申请人： ZENITH RADIO CORP

发明人： MERRELL RICHARD G ,  HENDRICKSON MELVIN C

IPC分类号： H04N5/12 ,  H04N5/04

CPC分类号： H04N5/12

摘要： A synchronization phase-lock system in a television receiver for maintaining coincidence between locally-generated vertical synchronization pulses and vertical synchronization pulses developed from received television transmissions. The phase-lock system utilizes the received vertical sync pulses in conjunction with gating circuitry to condition an up/down binary counter to count, within predetermined limits, in a first, or ''''up'''', direction during the received vertical sync interval and in the opposite, or ''''down'''' direction during the vertical trace interval of the received signal. Locally generated vertical sync pulses are also applied to the up/down binary counter wherein each pulse initiates one count. A locally generated vertical sync pulse occurring during the received vertical sync pulse interval generates one ''''up'''' count representative of coincidence between the received and locally generated vertical sync pulses. If the locally generated vertical sync pulse occurs during the vertical trace interval, a ''''down'''' count indicating non-coincidence is initiated. The phase-lock system further includes a reset gating circuit activated by the up/down binary counter reaching its ''''down'''' counting limit for resetting the phase of the locally generated vertical sync pulses such that they will be coincident with the received vertical sync pulses.

公开(公告)号：US3683469A

公开(公告)日：1972-08-15

申请号：US3683469D

申请日：1970-08-14

申请人： ZENITH RADIO CORP

发明人： CAPEK RAYMOND G ,  TAKAHASHI FRANK T

IPC分类号： H01G4/30 ,  H01G13/00

CPC分类号： H01G4/30 ,  Y10S29/031 ,  Y10T29/435

摘要： A method of fabricating a multilayer capacitor comprising alternate layers of ceramic dielectric material and metal electrodes. Preformed unfired ceramic dielectric pills having major surfaces coated with metal electrodes of lesser area than the coated surfaces are stacked with alternate layers of unfired ceramic dielectric powder fill. The stack is subjected to pressure to form a unitary compacted and pre-electroded multilayer element of unfired ceramic dielectric material, and the multilayer element is then fired to ceramic maturity.

摘要翻译： 一种制造包括陶瓷电介质材料和金属电极的交替层的多层电容器的方法。 具有涂覆有比涂覆表面小的面积的金属电极的主表面的预成型未烧制陶瓷电介质片堆叠有未烧结的陶瓷介电粉末填充物的交替层。 将堆叠体经受压力以形成未烧结的陶瓷介电材料的单一压实和预先电化的多层元件，然后将多层元件烧制成陶瓷成熟度。

公开(公告)号：US3670098A

公开(公告)日：1972-06-13

申请号：US3670098D

申请日：1970-03-09

申请人： ZENITH RADIO CORP

发明人： KORPEL ADRIANUS

IPC分类号： H04N13/00 ,  H04N1/00

CPC分类号： H04N13/00 ,  Y10S359/901

摘要： An object to be studied or analyzed is flooded with light from a laser. The light field transmitted from the object, which might for example be a transparency or a vibrating surface, is received by a photodetector. Another portion of the laser light or radiation is deflected throughout a scanning pattern and also caused to fall upon the photodetector. An optical system included in the reference beam path brings the reference beam to a focus (either real or virtual image) at a selected distance from the active surface of the photodetector. As a result, the electric signals developed by the photodetector represent a cross-section of the light field, transmitted from the object, located a distance from the photodetector surface which is the same as the distance therefrom to the focus of the scanned reference beam. Different cross-sections of the signal field from the object may be displayed merely by modifying the optical system. Depending on the manner in which the electric signals are processed, they may be caused to represent either a direct image or a hologram of the cross-section being visualized. By using the electric signals to drive a television-type monitor, a real-time display is reproduced.

摘要翻译： 待研究或分析的物体充满了激光的光。 从物体发射的光场（例如可以是透明的或振动的表面）由光电检测器接收。 激光或辐射的另一部分在整个扫描图案中偏转，并且也导致落在光电检测器上。 包括在参考光束路径中的光学系统将参考光束从距离光电检测器的有效表面选择的距离处的焦点（实线或虚像）。 结果，由光电检测器显影的电信号表示从物体传输的光场的横截面，距离与其距离的扫描参考光束的焦点相同的光电检测器表面的距离。 可以仅通过修改光学系统来显示来自对象的信号场的不同横截面。 根据电信号的处理方式，可以将它们表示为可视化的横截面的直接图像或全息图。 通过使用电信号驱动电视型显示器，再现实时显示。

公开(公告)号：US3660668A

公开(公告)日：1972-05-02

申请号：US3660668D

申请日：1969-09-25

申请人： ZENITH RADIO CORP

发明人： WOLSKI ADOLPH J

IPC分类号： H01J31/50 ,  H01J43/24

CPC分类号： H01J43/24 ,  H01J31/507

摘要： A photocathode in response to an incident light image develops a corresponding electron image which is accelerated and focused upon the input of a channel multiplier plate. The input of that plate is covered with a layer of a material having the property of transmission secondary electron multiplication, hereafter referred to as TSEM. Secondary electrons developed in that material in response to the incident electron image enter the channel multiplier where they are further multiplied and, finally, are focused on a phosphor screen where conversion to a light image takes place.

摘要翻译： 响应于入射光图像的光电阴极形成相应的电子图像，其被加速并聚焦在通道乘法器板的输入上。 该板的输入被覆盖有具有透射二次电子倍增特性的材料层，以下称为TSEM。 在该材料中产生的响应于入射电子图像的二次电子进入通道乘法器，在那里它们被进一步相乘，并且最后聚焦在发生转换成光图像的荧光屏上。

公开(公告)号：US3646450A

公开(公告)日：1972-02-29

申请号：US3646450D

申请日：1969-08-13

申请人： ZENITH RADIO CORP

发明人： MA JOHN Y

IPC分类号： H03J5/24 ,  H04B1/16

CPC分类号： H03J5/244

摘要： Selective tuning to any broadcast channel within a plurality of frequency bands is achieved by voltage-controlled tunable circuitry, such as the type employing varactor or varicap diodes, responsive to an adjustable DC tuning voltage, having unique levels assigned to the various desired channels. The voltage level, in tuning across all of the frequency bands, must be varied over a predetermined amplitude range, portions of which range are effectively assigned to different respective ones of the bands. Band switching of the tunable circuitry occurs automatically and electronically under control of the tuning voltage. Each time its amplitude is changed from a level in one portion of the range to a level in another portion, the tuner is made tunable over a different frequency band. No mechanical switches are needed to accomplish band switching.

公开(公告)号：US3643011A

公开(公告)日：1972-02-15

申请号：US3643011D

申请日：1970-04-16

申请人： ZENITH RADIO CORP

发明人： ENGEL CHRISTOPHER M ,  HEPNER CHARLES F

IPC分类号： H04N9/64 ,  H04N9/12 ,  H04N5/14

CPC分类号： H04N9/646

摘要： A video signal translating channel for a television receiver having a detector for developing a video signal has a first signal translating path coupled to the output of the detector. A differentiating network is included in the first signal path for developing a modified version of the detected video signal in which the high-frequency components are accentuated. A second signal translating path is also coupled to the output of the detector and it includes an integrating network for developing a differently modified version of the detected video signal in which the high-frequency components are attenuated. Phase inversion means are provided for inverting one of the modified signals relative to the other. Finally, matrix means, including an adjustable control circuit coupled to both of the signal paths, is provided for combining selectable portions of the phase inverted signal and the other of the modified signals to produce a resultant video signal having an altered high-frequency response and delayed in time relative to the detected signal.

摘要翻译： 用于具有用于显影视频信号的检测器的电视接收机的视频信号转换通道具有耦合到检测器的输出的第一信号转换路径。 差分网络包括在第一信号路径中，用于开发高频分量被加强的检测视频信号的修改版本。 第二信号转换路径还耦合到检测器的输出端，并且其包括用于开发其中高频分量被衰减的检测视频信号的不同修改版本的集成网络。 提供相位反转装置用于相对于另一个反转一个修改的信号。 最后，提供了包括耦合到两个信号路径的可调控制电路的矩阵装置，用于组合相位反相信号的可选部分和另一个经修改的信号，以产生具有改变的高频响应的合成视频信号， 相对于检测到的信号延迟时间。

公开(公告)号：US3639683A

公开(公告)日：1972-02-01

申请号：US3639683D

申请日：1970-05-20

申请人： ZENITH RADIO CORP

发明人： SUTHERLAND JOHN B

IPC分类号： H04N9/71 ,  H04N9/48

CPC分类号： H04N9/71

摘要： Improved color killer circuitry for disabling the chrominance processing channel during monochrome or very weak color signal reception. The circuit includes a high-speed semiconductor switching device interposed in the signal path of the chrominance channel and poled to conduct color information therethrough when the signal level is at a predetermined magnitude. At signal levels below threshold, the semiconductor switch is effectively reverse-biased. The disclosed circuitry further includes actuating means responsive to a source of potential wherein variations in signal level are indicative of instantaneous amplitude of the reference burst signal and which further represent received signal strength. When the chrominance information extracted from the received composite signal reaches a predetermined level, i.e., threshold, the semiconductor switching device becomes forward-biased thereby opening the signal path to pass appropriate chrominance information to subsequent stages in the chrominance channel.

摘要翻译： 改进的彩色抑制器电路，用于在单色或非常弱的彩色信号接收期间禁用色度处理通道。 该电路包括插入在色度通道的信号路径中的高速半导体开关器件，并且在信号电平处于预定的大小时被极化以便传输彩色信息。 在低于阈值的信号电平下，半导体开关被有效地反向偏置。 所公开的电路还包括响应于电位源的致动装置，其中信号电平的变化指示参考突发信号的瞬时幅度，并且进一步表示接收信号强度。 当从接收的复合信号中提取的色度信息达到预定的电平即阈值时，半导体开关器件变为正向偏置，从而打开信号路径，以将适当的色度信息传递到色度通道中的后续级。

公开(公告)号：US3628146A

公开(公告)日：1971-12-14

申请号：US3628146D

申请日：1970-05-22

申请人： ZENITH RADIO CORP

发明人： BECKMAN ORVAL E ,  KLYMKIW WALTER

IPC分类号： H04B1/20 ,  H04B1/16

CPC分类号： H04B1/20

摘要： A touch-actuated, master control or function network for selecting respective operational modes for an AM/FM/phonograph/tape complex, including optional monostereo and extended bass modes. The control network includes a plurality of functionally interrelated, solid-state switching circuits having a silicon controlled rectifier (SCR) as the operative control element. When one of the basic operational modes (AM, FM, phono, tape) is selected, provision is made to automatically deactivate or cutoff any of the switching elements of the remaining modes if previously in an operative condition. Provision is also made to prevent selection of the optional stereo mode while the complex is in the basic AM operational mode. The individual SCR switching circuits are effectively controlled by voltage level changes produced upon contacting an associated touch-responsive element in conjunction with an included storage capacitor in the gating circuit of the particular SCR. Such arrangement provides immunity to false operation of the switching circuits due to extraneous noise pickup, transients and the like.

公开(公告)号：US3624290A

公开(公告)日：1971-11-30

申请号：US3624290D

申请日：1969-12-30

申请人： ZENITH RADIO CORP

发明人： HOFMANN JUDSON A

IPC分类号： H04N5/53 ,  H04N5/56

CPC分类号： H04N5/53

摘要： Under normal operating conditions a coincidence circuit produces keying pulses, for an AGC system of a television receiver, only when the flyback pulses from the receiver''s horizontal sweep system occur concurrently with the horizontal sync components from the sync separator. The magnitude of the developed AGC voltage is held constant between keying pulses. This arrangement precludes sampling of video information, with a resulting false measure of received signal strength and an erroneous magnitude for the AGC voltage, which takes place in a conventional flyback pulse-keyed AGC system when the horizontal oscillator is out of synchronism with the sync pulses. During transient conditions, when there is a very fast and substantial increase or decrease in received signal strength causing a loss of sync pulses at the separator output, keying is achieved in the disclosed AGC system in response to the flyback pulses alone.