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公开(公告)号：US4259687A
公开(公告)日：1981-03-31
申请号：US96374
申请日：1979-11-21
申请人： Kinya Shinkai , Susumu Akazawa , Kiyonori Tominaga
发明人： Kinya Shinkai , Susumu Akazawa , Kiyonori Tominaga
摘要： In a beam index color television receiver having the screen of its color cathode ray tube provided with a repetitive pattern of a plurality of groups of different primary color phosphor elements arranged side-by-side across the image area of the screen to be scanned by a single electron beam as the latter is selectively modulated by respective color signals, index and mode set signals are provided in response to scanning by the beam of respective locations on the screen which are interspersed across the latter with distances therebetween which are non-integrally different from the pitch of the groups of color phosphor elements, and with adjacent locations corresponding to the mode set signal being spaced apart by an integral multiple of such pitch. The index signal can be provided by the scanning with the beam of index elements at the corresponding locations on the screen which emit light or other radiant energy, while the mode set signal may be provided in response to the absence of the index elements at the respective locations or to the presence, at the latter locations, of mode set elements which emit distinctive radiations when scanned by the beam. In any case, a gate pulse generator is responsive to the index signal to provide sequentially repeated gating signals by which the color signals are gated to selectively modulate the electron beam, and the phase and sequence of the gating signals are controlled in response to the mode set signal for ensuring that, as the beam scans each color phosphor element, the beam is modulated by the corresponding color signal.
摘要翻译： 在具有其彩色阴极射线管的屏幕的光束折射彩色电视接收机中，该彩色阴极射线管的屏幕设置有多个不同的原色荧光体元件的重复图案，并排地跨越待扫描的屏幕的图像区域 响应于屏幕上各个位置的光束的扫描，提供索引和模式设置信号，后者的单电子束被相应的颜色信号选择性地调制，这些信号是穿过该屏幕的各个位置的光束，其之间的距离与它们之间的距离是非整体不同的 彩色荧光粉元件组的间距以及对应于模式设定信号的相邻位置间隔这种间距的整数倍。 索引信号可以通过在发射光或其他辐射能的屏幕上的相应位置处的索引元素波束进行扫描来提供，而模式设置信号可以响应于相应的索引元件的不存在而被提供 位置或在后面的位置存在当被光束扫描时发射不同辐射的模式集合元素。 在任何情况下，门脉冲发生器响应于索引信号以提供依次重复的门控信号，通过该门控信号，颜色信号被选通以选择性地调制电子束，并且门控信号的相位和序列响应于该模式 用于确保当光束扫描每个彩色磷光体元件时，光束被相应的颜色信号调制。
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公开(公告)号：US4183050A
公开(公告)日：1980-01-08
申请号：US919706
申请日：1978-06-27
申请人： Takao Tsuchiya , Shouji Omori , Yasunobu Kuniyoshi , Atsushi Matsuzaki , Susumu Akazawa , Kiyonori Tominaga
发明人： Takao Tsuchiya , Shouji Omori , Yasunobu Kuniyoshi , Atsushi Matsuzaki , Susumu Akazawa , Kiyonori Tominaga
CPC分类号： H04N9/72
摘要： A clamping circuit for color television signals includes a demodulator for demodulating the chrominance component of the color television signals to produce first and second color difference signals, and first and second adders for adding adjustable first and second control signals to the first and second color difference signals so as to produce modified first and second color difference signals. A matrix circuit is responsive to the outputs from the first and second adders to produce a third color difference signal. A reference signal, which represents a predetermined level of a color television signal, such as the pedestal level, is added to each of the color difference signals; and a first comparator compares the first color difference signal, with the reference signal added thereto, to the third color difference signal, with the reference signal added thereto, and a second comparator compares the second color difference signal, with the reference signal added thereto, to the third color difference signal, with the reference signal added thereto. At the times of occurrence of the pedestal level of the color television signal, the outputs from the first and second comparators are sampled, respectively, to produce the first and second control signals which are fed back and added to the first and second color difference signals.In one embodiment, the reference signal is a d.c. level proportional to the pedestal level of the color television signal. In another embodiment, the reference signal is the luminance component of the color television signal clamped to the pedestal level. This clamped luminance signal is produced by another clamp circuit.
摘要翻译： 用于彩色电视信号的钳位电路包括用于解调彩色电视信号的色度分量以产生第一和第二色差信号的解调器，以及用于将可调节的第一和第二控制信号添加到第一和第二色差信号的第一和第二加法器 以产生修改的第一和第二色差信号。 矩阵电路响应于来自第一和第二加法器的输出以产生第三色差信号。 将表示彩色电视信号的预定电平（诸如基座电平）的参考信号加到每个色差信号上; 并且第一比较器将所述第一色差信号与添加到其上的参考信号相比较，并将参考信号加到第三色差信号上，而第二比较器将第二色差信号与添加的参考信号进行比较， 到第三色差信号，其中添加了参考信号。 在出现彩色电视信号的基准电平的时刻，分别对来自第一和第二比较器的输出进行采样，以产生反馈并添加到第一和第二色差信号的第一和第二控制信号 。 在一个实施例中，参考信号是直流。 电平与彩色电视信号的基座电平成正比。 在另一个实施例中，参考信号是被钳位到基座电平的彩色电视信号的亮度分量。 该钳位亮度信号由另一钳位电路产生。
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公开(公告)号：US4263614A
公开(公告)日：1981-04-21
申请号：US102973
申请日：1979-12-14
申请人： Kiyonori Tominaga
发明人： Kiyonori Tominaga
CPC分类号： H03D3/02 , H03J7/08 , H03L7/06 , H04N9/24 , H03H7/0161
摘要： A phase-tracking loop circuit which can be used, for example, as an FM detector or as a frequency-tracking control circuit to control the index signal of a beam-index cathode ray tube (CRT), includes an adder receiving an input signal of fluctuating frequency, a tracking filter coupled to the output of the adder and whose passband center frequency is shiftable, in response to a control voltage, to follow changes in the frequency of the input signal, an attenuator feeding an attenuated version of the output from the tracking filter back to the adder for combining in the latter with the input, and a phase comparator comparing the phase of the output of the adder with the output of the tracking filter to provide a corresponding control voltage to the tracking filter. If used as an FM detector, the control voltage can also constitute a demodulated signal. If used to control color switching in a beam index CRT, a controlled signal tracking the phase of the index signal can be derived from a phase-locked loop circuit which provides one of the inputs to the phase comparator in response to the output of the tracking filter.
摘要翻译： 可以用作FM检波器或用于控制光束折射率阴极射线管（CRT）的折射率信号的频率跟踪控制电路的相位跟踪环路电路包括：加法器，接收输入信号 波动频率的跟踪滤波器，响应于控制电压而耦合到加法器的输出并且其通带中心频率可移位的跟踪滤波器，以跟随输入信号的频率的变化;衰减器，馈送衰减版本的输出， 跟踪滤波器返回到加法器，用于在后者中与输入进行组合，以及相位比较器，将加法器的输出的相位与跟踪滤波器的输出进行比较，以向跟踪滤波器提供相应的控制电压。 如果用作FM检测器，则控制电压也可以构成解调信号。 如果用于控制光束索引CRT中的颜色切换，可以从锁相环电路导出跟踪索引信号相位的受控信号，该锁相环电路响应于跟踪的输出向相位比较器提供一个输入 过滤。
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公开(公告)号：US4255759A
公开(公告)日：1981-03-10
申请号：US957740
申请日：1978-11-06
摘要： A color television receiver includes an automatic phase control circuit (which will be hereinafter referred to simply as an APC circuit) with a voltage controlled oscillator for controlling the phase of a reference carrier supplied to a color demodulator so that the phase and frequency of the reference carrier are locked to those of a color burst signal. In addition to the APC circuit, an auxiliary frequency control loop drives the frequency of the voltage controlled oscillator until its frequency falls within the lock-in range of the APC loop. The auxiliary frequency control loop includes a counter circuit for counting cycles of the output signal of the voltage controlled oscillator during a reference time interval and a decoding circuit for decoding the output of the counter circuit to produce an auxiliary control signal for frequency control of the voltage controlled oscillator.
摘要翻译： 彩色电视接收机包括具有压控振荡器的自动相位控制电路（以下简称为APC电路），用于控制提供给彩色解调器的参考载波的相位，使得参考的相位和频率 载波被锁定到颜色突发信号的载波。 除了APC电路之外，辅助频率控制环路驱动压控振荡器的频率，直到其频率落在APC环路的锁定范围内。 辅助频率控制回路包括用于在参考时间间隔期间对压控振荡器的输出信号的周期进行计数的计数器电路和用于解码计数器电路的输出的解码电路，以产生用于电压的频率控制的辅助控制信号 受控振荡器。
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公开(公告)号：US06351085B1
公开(公告)日：2002-02-26
申请号：US09694818
申请日：2000-10-24
申请人： Kiyonori Tominaga
发明人： Kiyonori Tominaga
IPC分类号： H01J2980
CPC分类号： H04N9/24
摘要： As described above, according to the present invention, there is provided a color CRT display having a one-beam electron gun for reproducing colors by sequentially switching respective chrominance signals, R, G, and B, supplied to the one-beam electron gun. The color CRT display is characterized in that a color image displayed on a CRT screen is picked up by a CCD image pickup device and the image pickup signal is stored in an image pickup signal memory, the image pickup signal is compared with an original video signal stored in a video signal memory in terms of components of chromaticity using an arithmetic operator, and the frequency and phase of the image pickup signal of a VCO, which are required for determining the switching timing of chrominance signals in a multiplexer, are adjusted so that the difference between the image pickup signal and the original video signal in terms of components of chromaticity is minimized. With this configuration, it is possible to reproduce stably colors without generation of a black compression, even when the color CRT display is applied to a high precision display.
摘要翻译： 如上所述，根据本发明，提供一种具有一束电子枪的彩色CRT显示器，用于通过顺序地切换提供给一束电子枪的各个色度信号R，G和B来再现颜色。 彩色CRT显示器的特征在于，由CRT图像拾取装置拾取显示在CRT屏幕上的彩色图像，并且将图像拾取信号存储在图像拾取信号存储器中，将图像拾取信号与原始视频信号 使用算术运算器存储在视频信号存储器中的色度分量，并且调整用于确定多路复用器中的色度信号的切换定时所需的VCO的摄像信号的频率和相位，使得 在色度分量方面，图像拾取信号和原始视频信号之间的差异被最小化。 利用这种配置，即使将彩色CRT显示器应用于高精度显示器，也可以生成稳定的颜色而不产生黑色压缩。
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公开(公告)号：US4196445A
公开(公告)日：1980-04-01
申请号：US951881
申请日：1978-10-16
摘要： In an automatic phase control circuit having a predetermined lock-in range wherein the oscillating signal produced by the adjustable oscillator of the automatic phase control circuit is used in combination with an input signal to derive a signal whose phase is compared to a reference signal, the phase difference between the derived signal and the reference signal being used as a phase control signal for the oscillator so as to minimize this phase difference and thus lock the phase of the derived signal to that of the reference signal, a method of adjusting the oscillator in the event that the phase relation between the oscillating signal and the input signal is outside the lock-in range. During recurrent intervals, which vary with time base errors in the input signal, the number of cycles of the oscillating signal is counted. The count is examined to determine whether it is within a predetermind range of a predetermined count, and if outside this range, the oscillating frequency of the oscillator is adjusted in a direction to return the count to within this predetermined range. In a preferred embodiment, this automatic phase control circuit is used to eliminate time-base errors in at least the chrominance signal of a composite color video signal. In such an embodiment, the adjustable oscillator is used in a frequency-converter for converting the frequency of at least the chrominance signal from an input frequency to a different frequency, and it is the phase of the frequency-converted chrominance signal which is compared to the reference signal.
摘要翻译： 在具有预定锁定范围的自动相位控制电路中，其中由自动相位控制电路的可调节振荡器产生的振荡信号与输入信号组合使用以导出其相位与参考信号相比较的信号， 将导出信号和参考信号之间的相位差用作振荡器的相位控制信号，以便将该相位差最小化，从而将导出信号的相位锁定到参考信号的相位，调整振荡器的方法 振荡信号和输入信号之间的相位关系超出锁定范围的事件。 在输入信号中随时间误差变化的周期间隔期间，对振荡信号的周期数进行计数。 检查计数以确定其是否在预定计数的预定范围内，并且如果在该范围之外，则振荡器的振荡频率在使计数返回到该预定范围内的方向上被调整。 在优选实施例中，该自动相位控制电路用于消除复合彩色视频信号的至少色度信号中的时基误差。 在这样的实施例中，可调节振荡器用于频率转换器中，用于将至少色度信号的频率从输入频率转换为不同频率，并且它是将频率转换的色度信号的相位与 参考信号。
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