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111.发明授权Television automatic gain control circuitry providing for compatible control of vhf tuner and uhf tuner 失效电视自动增益控制电路提供兼容甚高频调谐器和UHF调谐器的控制
公开(公告)号：US3823379A
公开(公告)日：1974-07-09
申请号：US36264473
申请日：1973-05-21
Applicant: RCA CORP
Inventor： GEORGE J
CPC classification number: H03G3/3068
Abstract: A television automatic gain control circuit which transforms the low input impedance of the gain control terminal of a stage such as a grounded base bipolar transistor RF amplifier of a UHF tuner or a PIN diode attenuator utilized for tuner gain reduction to an impedance comparable to that of the impedance of the gain control terminal of an MOS/FET transistor used as an RF amplifier of a VHF tuner. Additionally, the control circuit provides for clamping of the AGC voltage at a selected level to provide AGC delay different from VHF AGC delay. Also, a predetermined voltage offset is provided to translate the AGC voltage applied to the RF amplifier of the VHF tuner before being applied to the gain controlled stage of the UHF tuner.
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公开(公告)号：US3823264A
公开(公告)日：1974-07-09
申请号：US22680072
申请日：1972-02-16
Applicant: RCA CORP
Inventor： HAFERL P
Abstract: A video output amplifier utilizes two transistors arranged in cascode configuration for driving the cathode electrode of a color television kinescope. A negative feedback network couples the collector electrode of the output transistor of the cascode configuration to the base electrode of the input transistor of the pair, and includes an arc current limiting resistor which serially couples the output transistor to the kinescope cathode.
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公开(公告)号：US3820157A
公开(公告)日：1974-06-25
申请号：US30085552
申请日：1952-07-25
Applicant: RCA CORP
Inventor： PRITCHARD D , SCHROEDER A
CPC classification number: H04N9/66
Abstract: Color television signal detection apparatus utilizing only two synchronous detectors, the output signals of the two detectors, being combined with each other to derive a third signal of the same type as that provided by the synchronous detectors themselves, each of these signals then being combined with the luminance signal to provide the three desired signals representative of the color components.
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公开(公告)号：US3817320A
公开(公告)日：1974-06-18
申请号：US12007671
申请日：1971-03-02
Applicant: RCA CORP
Inventor： WILLIAMS R
Abstract: A passive cooler arranged for three stages of cooling including an outer L-shaped member serving as two of the cooling stages and an inner member serving as the third stage of cooling at a preselected equilibrium temperature. Certain surfaces of each leg of the outer member and an exposed surface of the inner member are each given a surface finish having a spectral response in accordance with certain radiation wavelengths such that the inner member is maintained at a preselected temperature which is lower than otherwise possible when the cooler is exposed to thermal radiation, the cooler being located in an environment having a temperature lower than the preselected temperature.
Abstract translation: 被配置为三级冷却的被动冷却器，包括用作两个冷却级的外部L形部件和用作在预选平衡温度下的第三级冷却的内部部件。 外部构件的每个腿的某些表面和内部构件的暴露表面各自被赋予具有根据某些辐射波长的光谱响应的表面光洁度，使得内部构件保持在比其他可能性低的预选温度 当冷却器暴露于热辐射时，冷却器位于温度低于预选温度的环境中。
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公开(公告)号：US3816336A
公开(公告)日：1974-06-11
申请号：US26322872
申请日：1972-06-15
Applicant: RCA CORP
Inventor： MCCAFFREY M , CASTELLANO J
CPC classification number: C09K19/26
Abstract: Electro-optic devices comprising a thin layer of a liquid crystal composition containing a compound of the formula
WHEREIN R and R'' are alkyl groups of 1-7 carbon atoms between conductive support plates, offer a wide range of use temperatures.-
Patent Agency Ranking
公开(公告)号：US3815054A
公开(公告)日：1974-06-04
申请号：US38311073
申请日：1973-07-27
Applicant: RCA CORP
Inventor： MC CLURE D , NICHOLS H
Abstract: A plurality of insulated equal diameter conductors are clustered in a ring about a centered idler conductor. By providing a center idler conductor insulated from the outer conductors, while connecting only every other one of the outer conductors in parallel between first and second terminals and connecting only the remaining outer conductors in parallel between third and fourth terminals, a transmission line of low impedance, balance and symmetry is provided.
Abstract translation: 多个绝缘等直径的导体围绕中心的惰轮导体聚集在环中。 通过提供与外导体绝缘的中心惰轮，同时在第一和第二端子之间并联连接外导体中的每一个外部导体，并且仅在第三和第四端子之间并联连接剩余的外导体，具有低阻抗的传输线 提供平衡和对称性。
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117.发明授权
公开(公告)号：US3814904A
公开(公告)日：1974-06-04
申请号：US29929472
申请日：1972-10-20
Applicant: RCA CORP
Inventor： RUSSELL J , GREENAWAY D
Abstract: A light-modifying portion divided into a plurality of discrete subareas each of which is occupied by an assigned light-modifying form, such as a prism of selected inclination, produces a pattern in accordance with a code of output light beams during decoding which manifests the code. The meridional angle of the form may also be assigned in accordance with the code. Redundancy is optionally obtainable in that the total plurality of subareas may be divided into groups of subareas, each member of one particular group possessing the same selected inclination and meridional angle and by using an imaging lens during decoding to focus ones of the output light beams derived from the total plurality of discrete subareas to a common focus point.
Abstract translation: 被分成多个离散子区域的光修改部分，每个子区域被诸如所选择的倾斜度的棱镜之类的所分配的光修正形式占据，在解码期间根据输出光束的代码产生图案， 码。 形式的子午角也可以根据代码分配。 可选地可以获得冗余，因为总的多个子区域可以被划分为子区域的组，一个特定组的每个成员具有相同的所选择的倾斜度和子午角，并且在解码期间通过使用成像透镜来聚焦衍射的输出光束 从多个离散子区域到共同的焦点。
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公开(公告)号：US3813596A
公开(公告)日：1974-05-28
申请号：US34667073
申请日：1973-03-30
Applicant: RCA CORP
Inventor： HULLS L
Abstract: A magnetic reed sensor comprises a generally U-shaped permanent magnet having first and second end poles defining a gap of a given distance therebetween and establishing a magnetic flux path thereacross. A reed of flexible magnetic material is fixedly mounted at one end to a support with its other end forming a cantilever projection into the magnetic flux path wherein the flux path is normally symmetrically disposed about the reed. An external ferromagnetic material moved in proximity to said symmetric flux path, creates an unbalanced flux distribution which urges the reed toward one of the pole pieces. One embodiment includes a light source and a light pipe each mounted in opposite directions from the reed so that an optical path is completed between the light source and the light pipe in response to movement of the reed. The magnetic reed sensor then serves as a light shutter which is used in conjunction with an automotive engine to provide an optical indication of the relative timing of the engine.
Abstract translation: 磁簧传感器包括大致为U形的永磁体，其具有限定其间给定距离的间隙的第一和第二端极，并且在其间形成磁通路径。 柔性磁性材料的筘在一端固定地安装到支撑件上，其另一端在磁通路径中形成悬臂突起，其中磁通通常围绕筘对称设置。 移动到所述对称磁通路径附近的外部铁磁材料产生不平衡的磁通分布，该磁通分布将磁簧推向极片之一。 一个实施例包括光源和光管，每个光源和光管分别从簧片安装在相反的方向上，使得响应于簧片的移动在光源和光管之间完成光路。 然后，磁簧传感器用作与汽车发动机结合使用以提供发动机的相对定时的光学指示的光闸。
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公开(公告)号：US3812537A
公开(公告)日：1974-05-21
申请号：US30641272
申请日：1972-11-14
Applicant: RCA CORP
CPC classification number: G11B15/684
Abstract: A tape cartridge magazine includes a top surface and a bottom surface maintained in spaced relationship by a first and second side member to form an enclosure having a front and rear opening. Support rails within the enclosure support a plurality of tape cartridges in a stacked array. Access slots in the first side member provide access into the interior portion of the enclosure to allow manipulation of each of the plurality of tape cartridges by its detent notch between a first and a second position. Each of the plurality of tape cartridges, when in the first position, has its pressure roller farther from the enclosure rear opening than when in the second position.
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公开(公告)号：US3812528A
公开(公告)日：1974-05-21
申请号：US29380072
申请日：1972-10-02
Applicant: RCA CORP
Inventor： FLORY R
Abstract: A layered information record contains superimposed frames of information wherein a first frame contains luminance information of a scene as density variations of a cyan dye. A second frame superimposed on the first frame contains color encoded chrominance information as density variations of a yellow dye. In a system for playing back the layered information record, white light is projected through the superimposed first and second frames of information and viewed through a red filter for extracting the monochromatic luminance information and a blue filter for extracting the monochromatic color encoded chrominance information.
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