公开(公告)号：US4268856A

公开(公告)日：1981-05-19

申请号：US78206

申请日：1979-09-24

申请人： Susumu Akazawa

发明人： Susumu Akazawa

IPC分类号： H04N9/24

CPC分类号： H04N9/24

摘要： In a beam index color television receiver having the screen of its color cathode ray tube provided with color phosphor elements and index elements adapted to be excited by an electron beam as the latter scans the screen, and in which index signals, resulting from the excitation of the index elements by the beam, are employed to control the gating or switching of color signals for modulating the beam so that, at any instant during the scanning of an image area of the screen in each scanning interval, the electron beam is modulated, or has its beam current determined, by the color signal corresponding to the color phosphor element then being scanned by the beam; a potential applied to the cathode ray tube determining its beam current is controlled so as to maintain constant the level of the index signals during scanning by said beam of a run-in area at the initiation in each scanning interval; and such controlled potential has its level shifted downwardly a predetermined amount to provide a reference potential which is employed as a black signal level for the color signals determining the beam current during scanning of the image area.

摘要翻译： 在具有其彩色荧光体元件的彩色阴极射线管的屏幕的光束折射彩色电视接收机中，适用于当电子束扫描屏幕时适于被电子束激发的折射率元件，其中由激发 采用光束的索引元素来控制用于调制光束的颜色信号的选通或切换，使得在扫描每个扫描间隔期间的屏幕的图像区域的任何时刻，电子束被调制，或 通过与彩色磷光体元件相对应的颜色信号确定其光束电流，然后被光束扫描; 控制施加到确定其束电流的阴极射线管的电位，以便在扫描期间在每个扫描间隔的起始处由所述入射区域的波束在扫描期间保持指数信号的电平恒定; 并且这种受控电位的电平向下移动预定量，以提供用作在扫描图像区域期间确定光束电流的彩色信号的黑色信号电平的参考电位。

公开(公告)号：US4175241A

公开(公告)日：1979-11-20

申请号：US909111

申请日：1978-05-24

申请人： Takao Tsuchiya ,  Susumu Akazawa ,  Kyoichi Murakami

发明人： Takao Tsuchiya ,  Susumu Akazawa ,  Kyoichi Murakami

IPC分类号： H03K3/037 ,  H03K1/12

CPC分类号： H03K3/0372

摘要： This invention is a phase inversion circuit of improved stability of operation for a master-slave flip-flop circuit. An additional gating circuit is controlled by two signals, one from an output of the slave flip-flop circuit and the other from an externally applied phase inversion signal. The output of the additional gating circuit is connected to the master flip-flop circuit through a circuit means that also receives a signal from the slave flip-flop output circuit. In the absence of inversion signals the circuit means controls the master flip-flop circuit from the slave flip-flop circuit and the master flip-flop circuit controls the slave flip-flop circuit with the assistance of the timing pulses in the usual manner. The phase inversion signal can be applied over a wide range of timing intervals of the timing circuit provided the inversion signal overlaps at least partly one of the timing pulses of the regular timing signal when the normal output signal of the slave flip-flop is a " 0" and the normal output signal of the master flip-flop circuit is also a " 0".

摘要翻译： 本发明是一种提高主从触发器电路工作稳定性的相位反转电路。 附加门控电路由两个信号控制，一个来自从触发器电路的输出，另一个来自外部施加的相位反转信号。 附加选通电路的输出通过电路装置连接到主触发器电路，该电路也接收来自从触发器输出电路的信号。 在没有反相信号的情况下，电路装置控制来自从触发器电路的主触发器电路，并且主触发器电路借助定时脉冲以常规方式控制从触发器电路。 相位反转信号可以在定时电路的宽范围的定时间隔上被施加，只要当从触发器的正常输出信号为“正反馈信号”时反相信号与正常定时信号的定时脉冲中的至少一部分重叠， 0“，主触发电路的正常输出信号也为”0“。

公开(公告)号：US4092667A

公开(公告)日：1978-05-30

申请号：US787155

申请日：1977-04-13

申请人： Susumu Akazawa ,  Takao Tsuchiya ,  Kyoichi Murakami ,  Takashi Okada

发明人： Susumu Akazawa ,  Takao Tsuchiya ,  Kyoichi Murakami ,  Takashi Okada

IPC分类号： H04N9/71 ,  H04N9/49

CPC分类号： H04N9/71

摘要： An automatic chrominance control and color killer circuit for use in a color television receiver having a gain controllable chrominance amplifier for selectively amplifying chrominance signals and a color burst signal transmitted with a composite television signal during a color television transmission. The circuit further has a burst level detector connected to the chrominance amplifier, a control circuit including a time constant circuit connected to the burst level detector for deriving a control signal, which is supplied to the chrominance amplifier for controlling the gain thereof in response to the level of the control signal during the presence of the burst signal and for activating and inactivating the chrominance amplifier when the level of the control signal goes over and below a predetermined level, and a circuit connected between the burst level detector and the time constant circuit for shortening the time constant of the latter when the level of an output signal of the former goes below a predetermined level.

公开(公告)号：US4316216A

公开(公告)日：1982-02-16

申请号：US131834

申请日：1980-03-19

申请人： Katsuo Isono ,  Susumu Akazawa

发明人： Katsuo Isono ,  Susumu Akazawa

IPC分类号： H04N9/24

CPC分类号： H04N9/24

摘要： In a beam index color television receiver of the type having a cathode ray tube provided with beam-excitable color elements disposed on an image area of a display screen of the cathode ray tube and index elements disposed on the image area and a contiguous run-in area of the display screen, both of the color elements and index elements being scanned by the electron beam as the beam scans the display screen, apparatus for controlling the electron beam includes an index signal generator for generating a periodic index signal as the index elements are scanned by the beam, a phase-locked loop for producing an output signal having a frequency related to the index signal, color gates which sequentially gate respective color control signals individually to modulate the electron beam as the beam scans the color elements, a gating signal circuit which generates sequential gating signals at a frequency synchronized with the frequency of the output signal from the phase-locked loop and which supplies the gating signals in sequence to the color gates to control the latter so as to gate the respective color control signals, and a pulse forming circuit for enabling the phase-locked loop to produce the aforementioned output signal when the electron beam begins scanning the run-in area and for controlling the gating signal circuit to supply the gating signals to the control gates in phase alignment with respect to the scanning of the color elements when the electron beam begins scanning the image area of the display screen.

摘要翻译： 在具有设置有阴极射线管的显示屏的图像区域上的可光束激发色素的阴极射线管和设置在图像区域上的索引元件的类型的光束折射彩色电视接收机中，以及连续的输入 显示屏幕的区域，当光束扫描显示屏幕时，由电子束扫描的色彩元素和索引元素，用于控制电子束的设备包括：索引信号发生器，用于产生周期性索引信号，因为索引元素是 由光束扫描的锁相环，用于产生具有与索引信号相关的频率的输出信号;彩色门，当光束扫描色彩元素时，分别顺序地对各个色彩控制信号进行调制以调制电子束;门控信号 电路，其以与来自锁相环的输出信号的频率同步的频率产生顺序门控信号， 将门控信号顺序地放置到彩色门以控制后者，以便对相应的颜色控制信号进行门控;以及脉冲形成电路，用于当电子束开始扫描运行时使锁相环产生上述输出信号 并且当电子束开始扫描显示屏的图像区域时，用于控制选通信号电路将门控信号提供给相对于彩色元件的扫描的相位对准的控制门。

公开(公告)号：US4163989A

公开(公告)日：1979-08-07

申请号：US903003

申请日：1978-05-04

申请人： Susumu Akazawa ,  Kyoichi Murakami ,  Kiyoshi Ishihata ,  Takao Tsuchiya

发明人： Susumu Akazawa ,  Kyoichi Murakami ,  Kiyoshi Ishihata ,  Takao Tsuchiya

IPC分类号： H03D1/18 ,  H04N9/68 ,  H04N9/71 ,  H04N9/535 ,  H03D1/02

CPC分类号： H04N9/68 ,  H04N9/71

摘要： A detector circuit for a color television receiver includes a pair of transistors whose collector-emitter circuits are connected in parallel with each other, an input circuit, such as a differential amplifier, for supplying a differential input signal to the base electrodes of the pair of transistors, an impedance element coupled between the collector electrodes of the pair of transistors and a voltage source, and an integration circuit for integrating a detected signal taken from the collector electrodes of the pair of transistors and thereby providing an output signal. A reference-voltage circuit is included to supply a reference voltage, which can be used as a threshold voltage, to the emitter electrodes of the pair of transistors. The detector circuit is advantageously used in the color demodulating circuit of a color television receiver, wherein an oscillator controlled by color burst signals supplies the input signal to the detector circuit, and the output thereof is used to control the gain of an ACC amplifier.

摘要翻译： 用于彩色电视接收机的检测器电路包括一对晶体管，其集电极 - 发射极彼此并联连接;输入电路，例如差分放大器，用于将差分输入信号提供给该对 晶体管，耦合在该对晶体管的集电极之间的阻抗元件和电压源，以及积分电路，用于对从该对晶体管的集电极获取的检测信号进行积分，从而提供输出信号。 包括参考电压电路，以将可用作阈值电压的参考电压提供给该对晶体管的发射极。 检测器电路有利地用在彩色电视接收机的彩色解调电路中，其中由色同步信号控制的振荡器将输入信号提供给检测器电路，并且其输出用于控制ACC放大器的增益。

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

IPC分类号： H04N9/72 ,  H04N9/535

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。

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

IPC分类号： H04N9/24 ,  H04N9/22

CPC分类号： B82Y10/00 ,  H04N9/24

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。