公开(公告)号：US4185301A

公开(公告)日：1980-01-22

申请号：US910872

申请日：1978-05-30

申请人： Katsumi Mitsuda ,  Katsuhiko Yamamoto ,  Katsumi Adachi ,  Susumu Tsujihara ,  Taiichi Saeki ,  Minoru Takeda

发明人： Katsumi Mitsuda ,  Katsuhiko Yamamoto ,  Katsumi Adachi ,  Susumu Tsujihara ,  Taiichi Saeki ,  Minoru Takeda

IPC分类号： H04N3/32 ,  H04N5/68

CPC分类号： H04N3/32

摘要： A system for compensating image contour by modulating a scanning velocity in accordance with a video signal is disclosed, in which a mean current dissipated in a driving power amplifier is detected to control a gain of an amplifier in a preceding stage for suppressing the increase of power dissipation in the power amplifier when a video signal having many noises is received. The preceding stage amplifier is provided with a saturation characteristic to enhance the effect of contour compensation at a small amplitude signal and eliminate over compensation of image contour at a large amplitude signal. The combination of the saturation characteristic and the gain control further enhances the effect of suppression of power dissipation.

摘要翻译： 公开了一种通过根据视频信号调制扫描速度来补偿图像轮廓的系统，其中检测到在驱动功率放大器中消耗的平均电流以控制前级中的放大器的增益，以抑制功率的增加 当接收到具有许多噪声的视频信号时，功率放大器中的耗散。 前级放大器具有饱和特性，以增强在小振幅信号下轮廓补偿的影响，并消除大幅度信号对图像轮廓的过度补偿。 饱和特性和增益控制的组合进一步增强了功耗的抑制效果。

公开(公告)号：US4414571A

公开(公告)日：1983-11-08

申请号：US309850

申请日：1981-10-08

申请人： Takeshi Kureha ,  Teruo Kataoka ,  Taiichi Saeki ,  Minoru Takeda

发明人： Takeshi Kureha ,  Teruo Kataoka ,  Taiichi Saeki ,  Minoru Takeda

IPC分类号： H04N5/44 ,  H04N5/04

CPC分类号： H04N7/012

摘要： A television receiver converts a television signal of a standard television system currently employed into a signal at a horizontal scanning frequency of n (an integer of 2 or more) times that of the original television signal, so that it can visually reproduce any one of a television signal of the standard television system and a television signal of a second television system, which has a horizontal scanning frequency of about n times that of the television signal of the standard television system. When receiving the television signal of the standard television system, the horizontal deflection circuit operates at a horizontal scanning frequency n times that of the standard television system. When receiving the television signal of the second television system, it operates at the horizontal scanning frequency of the second television system. For the reproduction of the converted signal with the n times horizontal scanning frequency, the interval between the adjacent scanning lines may properly be adjusted by moving them at the horizontal scanning period of the standard television system in the vertical scanning direction.

摘要翻译： 电视接收机将当前采用的标准电视系统的电视信号以原始电视信号的n（2以上的整数）的水平扫描频率转换为信号，使得其可视觉地再现 标准电视系统的电视信号和第二电视系统的电视信号，其具有大约是标准电视系统的电视信号的水平扫描频率的大约n倍的水平扫描频率。 当接收到标准电视系统的电视信号时，水平偏转电路以比标准电视机的n倍的水平扫描频率工作。 当接收到第二电视系统的电视信号时，它以第二电视系统的水平扫描频率工作。 为了再现具有n次水平扫描频率的转换信号，可以通过在标准电视系统的垂直扫描方向上的水平扫描周期移动它们来适当地调整相邻扫描线之间的间隔。

公开(公告)号：US4139799A

公开(公告)日：1979-02-13

申请号：US799361

申请日：1977-05-23

申请人： Takeshi Kureha ,  Taiichi Saeki

发明人： Takeshi Kureha ,  Taiichi Saeki

IPC分类号： H04N9/28 ,  H01J29/51

CPC分类号： H04N9/28

摘要： Disclosed are a convergence device consisting of a circuit for generating a signal in synchronism with the horizontal sync signal and a circuit for generating a sinusoidal waveform current in response to the output signal from the signal generating circuit so that part of the sinusoidal waveform current may be used as a convergence correction or adjustment current, and a color television receiver incorporating the convergence device of the type described and capable of enlarging part of a picture.

摘要翻译： 公开了一种会聚装置，其包括用于产生与水平同步信号同步的信号的电路和用于响应于来自信号发生电路的输出信号产生正弦波形电流的电路，使得正弦波形电流的一部分可以是 用作会聚校正或调节电流，以及包含所述类型的会聚装置并能够放大图像的一部分的彩色电视接收机。