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公开(公告)号：US3805100A
公开(公告)日：1974-04-16
申请号：US32440773
申请日：1973-01-17
摘要： For cutting mechanical recordings in a flat record carrier with a recording frequency of 20 to 200-400 kHz, a piezoelectric transducer arranged to undergo longitudinal oscillations to drive a cutting stylus, the transducer being constituted by a body of an amorphous piezo oxide composed of a mixture of oxides of lead, zirconium and titanium and having a coupling coefficient of at least about 0.6 and a mechanical resonant frequency above the highest frequency to be recorded, the transducer being connected to an electric signal supply circuit having a high electrical resistance such that the combination of the high electrical resistance and the high coupling coefficient of the transducer results in a maximum resonance gain in the transducer response of no more than 10 db.
摘要翻译： 为了在具有20至200-400kHz的记录频率的平面记录载体中切割机械记录，布置成经受纵向振荡以驱动切割触针的压电换能器，所述换能器由非晶形压电氧化物的主体构成， 铅，锆和钛的氧化物的混合物，并且具有至少约0.6的耦合系数和高于要记录的最高频率的机械共振频率，换能器连接到具有高电阻的电信号供给电路，使得 传感器的高电阻和高耦合系数的组合导致换能器响应中的最大谐振增益不超过10db。
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公开(公告)号：US3830968A
公开(公告)日：1974-08-20
申请号：US35376773
申请日：1973-04-23
CPC分类号： H04N9/802 , H04N5/7605 , H04N5/9204
摘要： In the recording of a video signal and an audio signal in a single recording channel, with the recorded signal being a first carrier oscillation frequency modulated with the video information and a second carrier oscillation frequency modulated with the audio information, interferences which might occur in the audio signal as a result of the appearance of certain video signal frequencies are reduced by increasing the amplitude of the audio carrier oscillation whenever such frequencies appear in the video signal.
摘要翻译： 在单个记录通道中记录视频信号和音频信号时，记录信号是用视频信息调制的第一载波振荡频率和用音频信息调制的第二载波振荡频率，可能在 通过在视频信号中出现这种频率时，通过增加音频载波振荡的幅度来减少作为某些视频信号频率出现的结果的音频信号。
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公开(公告)号：US3808359A
公开(公告)日：1974-04-30
申请号：US33276773
申请日：1973-02-15
发明人： SCHOLZ W
CPC分类号： H04N9/86
摘要： A playback circuit for a color television signal wherein the color signals cover a first lower frequency range of the total video bandwidth and appear as three sequential signals each one horizontal picture line in duration and each corresponding to one of the basic colors. The playback circuit has a first signal channel for the processing of the sequential color signals in this first frequency range and a second signal channel responsive to the video signals in a second frequency range which includes the first frequency range. The first signal channel includes a circuit, including a memory, at whose output the sequential signals are simultaneously made available. A circuit is provided for deriving a difference signal from the simultaneously available color signals and the instantaneous sequential input signal to the memory and this difference signal is added to the signal in the second signal channel to cancel out signal differences between three consecutive lines which depend on the color information in the first frequency range.
摘要翻译： 一种用于彩色电视信号的重放电路，其中彩色信号覆盖总视频带宽的第一较低频率范围，并且显示为持续时间中每一个水平图像行的三个连续信号，并且每个对应于一个基本颜色。 回放电路具有用于处理该第一频率范围内的顺序彩色信号的第一信号通道和响应于包括第一频率范围的第二频率范围内的视频信号的第二信号通道。 第一信号通道包括一个包括存储器的电路，在其输出端，顺序信号同时可用。 提供一个电路，用于从同时可用的颜色信号和瞬时顺序输入信号导出到存储器的差分信号，并且该差分信号被加到第二信号通道中的信号，以抵消依赖于 在第一频率范围内的颜色信息。
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公开(公告)号：US3786178A
公开(公告)日：1974-01-15
申请号：US3786178D
申请日：1972-12-06
发明人： SCHOLZ W
CPC分类号： H04N9/86
摘要： A recording circuit for producing a three line sequential color television signal (TRIPAL) to be used with a playback circuit wherein the luminance signal is formed by combining the recorded chrominance signals in a matrix which differs from the standard luminance signal matrix, i.e., M-TRIPAL. In the recording circuit, a luminance signal YM is formed by combining the three color signals in a matrix which is the same as that to be used during playback and this luminance signal YM is subtracted from each of the color signals which have been sequentially sampled at horizontal picture line sweep frequency.
摘要翻译： 一种用于产生要与重放电路一起使用的三线顺序彩色电视信号（TRIPAL）的记录电路，其中通过以与标准亮度信号矩阵不同的矩阵组合记录的色度信号形成亮度信号，即M- TRIPAL。 在记录电路中，通过将与重放期间使用的矩阵相同的矩阵组合三个彩色信号来形成亮度信号YM，并且从已经顺序采样的每个色彩信号中减去亮度信号YM 水平图像线扫频。
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