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公开(公告)号：US3875026A
公开(公告)日：1975-04-01
申请号：US47229374
申请日：1974-05-22
Applicant: RCA CORP
Inventor： WIDMER ROLAND WERNER
CPC classification number: G03H1/0276 , C25D1/10 , G03F7/001 , G03H1/0244 , G03H2001/0292 , G03H2001/0296 , G03H2260/14 , G03H2260/63 , G03H2270/13 , G03H2270/52
Abstract: A master for replicating surface relief holograms is prepared by depositing a photoresist on the surface of an amorphous aluminum substrate, exposing the photoresist to an interference pattern, developing the photoresist to record the interference pattern as a surface relief pattern, transferring the surface relief pattern onto the surface of the aluminum substrate, removing the remaining photoresist, and anodizing the aluminum surface. This method is particularly useful in making masters for surface relief focused image holograms whose surface dimensions are in the order of one micron or less.
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公开(公告)号：US3873990A
公开(公告)日：1975-03-25
申请号：US39362673
申请日：1973-08-31
Applicant: RCA CORP
Inventor： WILBER JAMES ALBERT
CPC classification number: H04N9/85
Abstract: In a video disc player, a recorded composite signal, recovered during disc playback, includes a chrominance signal component buried in the midband of the accompanying luminance signal component. The player includes video processing circuits converting the recovered signal to an output composite signal in which the chrominance signal component occupies a higher frequency band, and employing the step of heterodyning the recovered chrominance signal with oscillations at a nominal frequency of fs + fs'' (where fs is the color subcarrier frequency of the output, and fs'' is the buried color subcarrier frequency of the disc signal). To stabilize the output chrominance signal component against spurious frequency variations accompanying disc playback, a phase locked loop (PLL) system is established to cause the fs + fs'' oscillations to track the disc frequency variations. The PLL system employs a voltage controlled oscillator (VCO) operating at a nominal frequency of fs + fs'', and responding to the output of a phase detector, comparing the synchronizing burst component of the output chrominance signal with the highly stable output of a reference oscillator operating at fs. The recorded synchronizing burst component includes bursts of conventional short duration following each horizontal sync pulse but additionally includes an elongated burst component (of the same subcarrier frequency and phase) occupying a line interval during the ''''backporch'''' portion of the vertical blanking interval. The PLL system phase detector is supplied with both short and elongated burst components through use of appropriate line rate and field rate gating of the output chrominance signal. Presence of elongated burst component in the phase detector input substantially precludes ''''sidelock'''' condition (i.e., PLL system locking to a sideband component of the color synchronizing waveform under turn-on conditions when turntable speed is incorrect, and maintaining such a locked state as speed is corrected).
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公开(公告)号：US3873906A
公开(公告)日：1975-03-25
申请号：US41077073
申请日：1973-10-29
Applicant: RCA CORP
Inventor： PERLMAN STUART STANLEY , MCCUSKER JOSEPH HENRY
CPC classification number: H02M5/2573
Abstract: The conduction path of a thyristor and a capacitor are connected in series between two terminals for alternating current power. A circuit responsive to a control signal manifestation and to a phase shifted version of the alternating current may be employed to trigger the thyristor once each period of the alternating current at a time to charge the capacitor in one sense or the other, as desired, and to a desired level.
Abstract translation: 晶闸管和电容器的导通路径串联在两个端子之间用于交流电力。 可以采用响应于控制信号表现的电路和交流电的相移版本来触发晶闸管，一旦交流电的每个周期一次按照一种意义或另一种方式对电容器进行充电，根据需要，以及 达到所需的水平。
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公开(公告)号：US3873888A
公开(公告)日：1975-03-25
申请号：US45537274
申请日：1974-03-27
Applicant: RCA CORP
Inventor： HANCHETT GEORGE DRAPER
CPC classification number: H02H3/50 , G02F1/13306 , G04G9/0047
Abstract: When the oscillator which supplies the alternating drive voltage for a liquid crystal display fails, the circuit of the present application senses this condition and in response thereto removes the operating voltage from the liquid crystal driver transistors.
Abstract translation: 当提供用于液晶显示器的交替驱动电压的振荡器失效时，本申请的电路感测到该条件，并且响应于此从液晶驱动晶体管中去除工作电压。
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公开(公告)号：US3872497A
公开(公告)日：1975-03-18
申请号：US35103673
申请日：1973-04-13
Applicant: RCA CORP
Inventor： AMERY JOHN GORDON , JORGENSON ROBERT WARREN
Abstract: Circuits are disclosed for processing color encoded video signals, encoded per a format wherein a chrominance signal in the form of a modulated subcarrier is buried in spectrum ''''troughs'''' in the midband of a wider band luminance signal, an illustrative use of the encoding format being in video disc recording. The processing circuits serve, in use with composite signals developed during video disc playback, to convert an input composite signal of buried subcarrier format to an output composite signal of NTSC format. Comb filtering is employed to separate buried subcarrier chrominance signal from midband luminance signal components. A heterodyning step preceding comb filtering is performed in a manner substantially precluding ''''jitter'''' of played back signals from disturbing accuracy of comb filter separating action, enabling use of a single 1H delay line form for the comb filter and enabling use of a relatively inexpensive, narrowband structure for the single delay line. The comb filter output provides a chrominance signal in a band suitable for output composite signal use. The output chrominance signal is also used in a subtractive process to effect comb filtering of the luminance signal to remove therefrom midband chrominance signals.
Abstract translation: 公开了用于处理彩色编码视频信号的电路，按照格式编码，其中调制副载波形式的色度信号被掩埋在较宽频带亮度信号的中间频带的频谱“波谷”中，编码格式的说明性使用 在视频光盘录制。 处理电路与视频盘播放期间开发的复合信号一起使用，将埋入的子载波格式的输入复合信号转换为NTSC格式的输出复合信号。 采用梳状滤波将掩埋的副载波色度信号与中频带亮度信号分量进行分离。 以梳状滤波器分离动作的干扰精度基本排除回放信号的“抖动”的方式进行梳状滤波前的外差步骤，使得能够使用单个1H延迟线形式用于梳状滤波器，并且能够使用相对便宜的， 单一延迟线的窄带结构。 梳状滤波器输出在适合于输出复合信号使用的频带中提供色度信号。 输出色度信号也用于减法处理以对亮度信号进行梳状滤波以从中间带色度信号中去除。
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Patent Agency Ranking66.发明授权
公开(公告)号：US3872480A
公开(公告)日：1975-03-18
申请号：US45109374
申请日：1974-03-14
Applicant: RCA CORP
Inventor： ENGELBRECHT RUDOLF SUCCO
CPC classification number: G03G15/325 , Y10S101/37
Abstract: Electrostatic charges are applied to an electrically insulating film with the aid of a pointed or patterned probe wetted with an electrically conductive liquid. The liquid is non-wetting on the film. A source of voltage (20-100V ac or dc) is applied between the probe and one major surface of the film; and relative motion is applied between the probe and the other major surface of the film so that the liquid comes into only non-wetting contact with selected areas of the film. The liquid adheres only to the probe and moves therewith.
Abstract translation: 借助于用导电液体润湿的尖锐或图案化探针，将静电荷施加到电绝缘膜上。 液体在膜上不润湿。 在探针和膜的一个主表面之间施加电压源（20-100V交流或直流）; 并且在探针和膜的另一个主表面之间施加相对运动，使得液体仅与膜的选定区域进行非湿润接触。 液体仅附着在探头上并随之移动。
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公开(公告)号：US3872325A
公开(公告)日：1975-03-18
申请号：US40718373
申请日：1973-10-17
Applicant: RCA CORP
Inventor： ADAMS MELVIN EDWARD , FERYSZKA RUBIN
IPC: H04B1/18 , H03J5/24 , H03K17/687 , H03K17/60
CPC classification number: H03J5/244 , H03K17/687
Abstract: An insulated gate field effect transistor (IGFET) is used selectively to connect a source of radio frequency (e.g., VHF) signal to means for utilizing the radio frequency signal. First and second gate potentials are selectably applied to the IGFET to render its channel conductive and non-conductive, respectively. The first potential is applied from a source impedance appreciably higher than the reactance of the gate-to-channel capacitance of the IGFET for radio frequency signal. This prevents a distributed RC transmission line effect in the IGFET introducing reflections back to the source of radio frequency signals when the IGFET channel is conductive. The second potential is applied from a source impedance appreciably lower than the reactance of the gate-to-source and gate-to-drain capacitances of the IGFET for radio frequency signal, to reduce feedthrough of radio frequency signal when the channel is nonconductive.
Abstract translation: 选择性地使用绝缘栅场效应晶体管（IGFET）将射频源（例如，VHF）信号连接到利用射频信号的装置。 第一和第二栅极电位可选地应用于IGFET，以分别使其沟道导通和不导通。 第一个电位从源极阻抗明显高于用于射频信号的IGFET的栅极 - 沟道电容的电抗。 这防止当IGFET通道导通时，IGFET中的分布式RC传输线效应将反射引入射频信号源。 第二个电位从源极阻抗明显低于用于射频信号的IGFET的栅极 - 源极和栅极 - 漏极电容的电抗，以减少当通道不导通时射频信号的馈通 。
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公开(公告)号：US3871020A
公开(公告)日：1975-03-11
申请号：US35756473
申请日：1973-05-07
Applicant: RCA CORP
Inventor： WILBER JAMES ALBERT
CPC classification number: H04N9/85
Abstract: In a video disc player, a recorded composite signal, recovered during disc playback, includes a chrominance signal component buried in the midband of the accompanying luminance signal component. The player includes video processing circuits converting the recovered signal to an output composite signal in which the chrominance signal component occupies a higher frequency band, and employing the step of heterodyning the recovered composite signal with oscillations at a nominal frequency of fs + fs'' (where fs is the color subcarrier frequency of the output, and fs'' is the buried color subcarrier frequency of the disc signal). To stabilize the output chrominance signal component against spurious frequency variations accompanying disc playback, a phase locked loop (PLL) system is established to cause the fs + fs'' oscillations to track the disc frequency variations. The PLL system employs a voltage controlled oscillator (VCO) operating at a nominal frequency of 1/2 fs fs'', and responding to the output of a phase detector, comparing the synchronizing burst component of the output chrominance signal with the highly stable output of a reference oscillator operating at fs. The VCO output is heterodyned with oscillations at 3/2 fs, derived from the reference oscillator, to provide the desired oscillation output varying about fs + fs''. ''''Sidelock'''' under disc playback initiation conditions is avoided by limiting the hold-in range of the VCO. A sweep voltage input to the VCO is supplied under out-of-lock conditions to enable phase lock acquisition. Upon achievement of phase lock, sweep generation is disabled, and sweep voltage sweeps back to mid-range value with normal slope. Sample-and-hold circuitry is employed in error voltage development, to enable PLL system to hold within rapid pull-in range during lengthy signal dropouts.
Abstract translation: 在视频光盘播放机中，在光盘播放期间恢复的记录复合信号包括掩埋在伴随的亮度信号分量的中间带中的色度信号分量。 播放器包括将恢复信号转换为色度信号分量占据较高频带的输出复合信号的视频处理电路，并采用将恢复的复合信号以标称频率fs + fs'进行外差的步调（其中 fs是输出的彩色副载波频率，fs'是盘信号的掩埋彩色副载波频率）。 为了稳定输出色度信号分量，防止伴随光盘播放的杂散频率变化，建立了锁相环（PLL）系统，以使fs + fs的振荡跟踪光盘的频率变化。 PLL系统采用以1/2 fs - fs'的标称频率工作的压控振荡器（VCO），并响应相位检测器的输出，将输出色度信号的同步脉冲串分量与高度稳定的输出进行比较 的参考振荡器以fs运行。 VCO输出通过从基准振荡器得到的3/2 fs的振荡进行外差，以提供关于fs + fs'变化的期望振荡输出。 通过限制VCO的保持范围来避免光盘播放启动条件下的“Sidelock”。 在锁定状态下提供输入到VCO的扫频电压，以实现锁相采集。 实现相位锁定时，禁止扫描生成，扫描电压以正常斜率扫描回到中间值。 采样保持电路用于误差电压开发，以便在冗长的信号丢失期间使PLL系统能够在快速拉入范围内保持。
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公开(公告)号：US3871019A
公开(公告)日：1975-03-11
申请号：US35089973
申请日：1973-04-13
Applicant: RCA CORP
Inventor： BINGHAM JOSEPH PETER
Abstract: A line sequential color signal coding format for a limited bandwidth video recording system is disclosed which achieves improved vertical transient response during playback display. Spectrum interleaving is employed between the luminance signal and color difference chrominance signals during encoding, with the necessary signal separation during decoding being effected by comb filtering using delay lines. Prefiltering may be implemented during encoding to comb out crosstalk producing signals from the luminance and chrominance signal spectrums. To avoid contamination of the mixed high frequency luminance components in the decoder by the switched low frequency components, the composite signal may be fed through a high pass luminance filter in the decoder whose cutoff frequency is above that of a low pass filter in the encoder through which the switched, line sequential components are fed.
Abstract translation: 公开了一种用于有限带宽视频记录系统的线序彩色信号编码格式，其在回放显示期间实现了改进的垂直瞬态响应。 在编码期间，在亮度信号和色差色度信号之间采用频谱交织，在通过使用延迟线的梳状滤波实现解码期间的必要信号分离。 可以在编码期间实现预滤波，以梳理从亮度和色度信号频谱产生信号的串扰。
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公开(公告)号：US3870954A
公开(公告)日：1975-03-11
申请号：US40480073
申请日：1973-10-09
Applicant: RCA CORP
Inventor： HANSON RICHARD ERIC , FINEMAN HOWARD EISEN
IPC: F02N11/10 , G01R19/165 , G01R31/00
CPC classification number: G01R19/16585 , F02N11/10 , G01R31/006
Abstract: A starter system fault detector includes means for detecting the initial peak current waveform of a starter motor and related components under test. A reference peak of the waveform is provided by either a fixed reference signal or a dynamic reference signal derived from and related to the maximum magnitude of the initial peak current waveform. In one embodiment the fault detector provides a fault indication if the magnitude of the initial current waveform signal fails to exceed the magnitude of the fixed reference signal during a predetermined time period. In another embodiment the fault detector provides a fault indication if the magnitude of the dynamic reference signal fails to exceed the magnitude of the initial current waveform recovery slope during a predetermined time period.
Abstract translation: 起动器系统故障检测器包括用于检测起动电动机和相关组件的初始峰值电流波形的装置。 波形的参考峰值由固定参考信号或从初始峰值电流波形的最大幅度导出和相关的动态参考信号提供。 在一个实施例中，如果在预定时间段期间初始电流波形信号的幅度不能超过固定参考信号的幅度，则故障检测器提供故障指示。 在另一个实施例中，如果动态参考信号的幅度在预定时间段内不能超过初始电流波形恢复斜率的幅度，则故障检测器提供故障指示。
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