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公开(公告)号：WO1982000394A1
公开(公告)日：1982-02-04
申请号：PCT/US1981000958
申请日：1981-07-15
Applicant: RCA CORP
IPC: H04N05/06
CPC classification number: H04N5/067
Abstract: A television sync signal generator adapted for ready conversion among various television standards includes a memory (216) in which information related to the magnitude of at least one component of a composite sync signal is stored at address locations each corresponding to at least one particular time in each recurrent television frame. A clock signal generator (212) addresses the memory (216) to sequentially read out the information so the sync signal can be reconstructed. By dividing the sync signal into four intervals which are selected by paging signals from one counter, a reduction in required memory capacity is achieved. For further reducing the number of memory addresses required, each memory address contains information relating to the instantaneous resolution or clock rate. A sample rate controller (820) is coupled to the memory for having the instantaneous clock address rate controlled in response to the contents of the memory.
Abstract translation: 适于在各种电视标准之间进行即时转换的电视同步信号发生器包括存储器（216），其中与复合同步信号的至少一个分量的大小相关的信息被存储在地址位置，每个地址位置对应于至少一个特定时间 每个经常性的电视架构。 时钟信号发生器（212）寻址存储器（216）以顺序读出信息，从而可以重构同步信号。 通过将同步信号划分成由来自一个计数器的寻呼信号选择的四个间隔，实现了所需存储器容量的减少。 为了进一步减少所需的存储器地址数量，每个存储器地址包含与瞬时分辨率或时钟速率有关的信息。 采样率控制器（820）耦合到存储器，用于响应于存储器的内容来控制瞬时时钟地址速率。
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公开(公告)号：US3774116A
公开(公告)日：1973-11-20
申请号：US3774116D
申请日：1972-05-05
Applicant: RCA CORP
CPC classification number: G11C11/23
Abstract: A block-oriented random-access information storage system is disclosed which includes a cathode ray tube, horizontal and vertical address registers for binary information identifying rectangular coordinate data storage locations on a target in the cathode ray tube, and digital-to-analog converters coupling the contents of the horizontal and vertical address registers to respective horizontal and vertical beam deflection means for the cathode ray tube. The electron beam is deflected to desired information storage locations on the target with great precision by first deflecting the beam to a nearby relatively large indexing electrode on the target, successively modifying the addresses in the horizontal and vertical address registers in response to a feedback signal from the indexing electrode until the beam impinges on a reference point on the target, and then changing the addresses in the address registers the known amounts needed to cause the beam to impinge on the desired nearby data storage location.
Abstract translation: 公开了一种面向块的随机访问信息存储系统，其包括阴极射线管，用于识别阴极射线管中目标上的直角坐标数据存储位置的二进制信息的水平和垂直地址寄存器以及耦合到数字模拟转换器 水平和垂直地址寄存器的内容被放置到阴极射线管的相应的水平和垂直光束偏转装置。 通过首先将光束偏转到目标上的附近相对较大的分度电极，电子束以极高的精度偏转到目标上期望的信息存储位置，连续地修改水平和垂直地址寄存器中的地址，以响应于来自 直到光束撞击在目标上的参考点上，然后改变地址寄存器中的地址以使所述波束撞击到期望的附近数据存储位置所需的已知量。
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公开(公告)号：SE362304B
公开(公告)日：1973-12-03
申请号：SE1496770
申请日：1970-11-05
Applicant: RCA CORP
IPC: G02F1/133 , G02F1/1365 , G02F1/1368 , G09G3/18 , G09G3/36 , H04N3/12 , H04N3/14 , H04N5/66 , G06K15/18
Abstract: A unidirectional electric field is applied to selected liquid crystal elements of a display matrix during one display frame. The direction of application of the field is reversed during the next display frame. The above may be achieved, for example, by connecting a capacitor across the liquid crystal element, charging it in one sense during one frame then opening the charging circuit, and charging it in the opposite sense during the next frame and then opening the charging circuit.
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公开(公告)号：ZA7007491B
公开(公告)日：1971-08-25
申请号：ZA7007491
申请日：1970-11-04
Applicant: RCA CORP
IPC: G02F1/133 , G02F1/1365 , G02F1/1368 , G09G3/18 , G09G3/36 , H04N3/12 , H04N3/14 , H04N5/66 , G01F
CPC classification number: G02F1/1368 , G02F1/1365 , G09G3/3648 , G09G3/367 , G09G2300/0895 , H04N3/127 , H04N3/14
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Patent Agency Ranking
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公开(公告)号：ZA7703153B
公开(公告)日：1978-04-26
申请号：ZA7703153
申请日：1977-05-25
Applicant: RCA CORP
Inventor： ANDERSON C , MARLOWE F
CPC classification number: E06B3/6612 , H01J29/46 , H01J31/124 , Y02A30/25 , Y02B80/24
Abstract: MODULAR TYPE GUIDED BEAM FLAT DISPLAY DEVICE An evacuated envelope has a rectangular display section and a gun section at one edge of the display section. The display section includes front and back walls which are generally rectangular, in closely spaced, parallel relation, and a plurality of spaced, parallel support walls between the front and back walls forming a plurality of parallel channels. The gun section extends across one end of the channels and includes therein gun structure which will direct electrons into the channels. In each of the channels is a beam guide which confines the electrons in a beam and guides the beam along the length of the channel. The beam guide also includes means for selectively deflecting the electron beam out of the guide at selective points along the guide so that the beam will impinge upon a phosphor screen along the inner surface of the front wall. In each of the channels is a scanning deflector which deflects the path of the beam as it passes from the guide to the phosphor screen so that each of the beams will scan a portion of the phosphor screen. The beams in each channel are scanned transversely across its portion of the screen in a transverse direction opposite to that of the beams in the adjacent channels.
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公开(公告)号：SE333031B
公开(公告)日：1971-03-01
申请号：SE1145168
申请日：1968-08-26
Applicant: RCA CORP
Inventor： HEILMEIER G , ZANONI L , MARLOWE F
IPC: G02F1/133 , G02F1/1365 , G02F1/137 , H04N3/12 , H04N5/74
Abstract: 1,219,840. Light modulators. RCA CORPORATION. 13 Sept., 1968 [14 Sept., 1967 (2)], No. 43724/68. Heading H4F. [Also in Division G5] To reduce the time required for a nematic liquid crystal cell to change from its transparent state to its light scattering state in response to repetitive voltage pulses of relatively short duration, a number of such pulses being required to cause the liquid crystal to scatter light to an extent which is a function of the amplitude of the pulses, the internal resistance of the cell is increased prior to the application of the repetitive pulses. To increase the internal resistance of the cell the number of free current carriers present in the liquid crystal is reduced by applying either a continuous direct voltage bias (Figs. 8 and 9, not shown) or a continuing train of voltage pulses (Figs. 10-12, not shown) to the cell at a level lower than the voltage threshold for dynamic scattering of the cell. By increasing the internal resistance it is found that the number of excitation pulses necessary to effect a substantial amount of light scattering is reduced, i.e. the " turn-on " time for the cell is reduced. In addition, the cell exhibits a larger scattering effect and is thus brighter. The liquid crystal cells may be arranged in a matrix to form a television type display, and in every frame interval a row of cells is simultaneously " addressed," i.e. have their internal resistances increased, while pulses having amplitudes corresponding to the video information of respective elements of the row are applied to the cells.
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公开(公告)号：ZA777173B
公开(公告)日：1978-09-27
申请号：ZA777173
申请日：1977-12-02
Applicant: RCA CORP
Inventor： MARLOWE F
IPC: G09G1/00 , H04N5/68 , G09G1/04 , G09G1/16 , G09G1/20 , H01J31/12 , H04N3/28 , H04N5/202 , H04N9/16
Abstract: An electron gun is controlled by a system which stores the characteristics of the gun in a random access memory. The contents of the memory feed an electron gun driver which properly biases the gun. The characteristics of the gun are stored in the memory by using a collector to sense the electron beam. A comparator is connected to the collector and a reference brightness signal generator. The output of the comparator controls the storage of the characteristics in the memory.
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公开(公告)号：ZA776554B
公开(公告)日：1978-08-30
申请号：ZA776554
申请日：1977-11-03
Applicant: RCA CORP
Inventor： MARLOWE F
Abstract: The brightness signal for an image display device is digitally processed using an analog to digital converter to translate the signal into digital words. A primary shift register is connected to the output of the analog to digital converter. The primary shift register has a stage capable of containing a digital brightness word for each element in the display line of the device. The primary shift register has a plurality of parallel outputs being spaced X number of stages from each other. Each output is connected to a separate secondary shift register which has X stages.
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