公开(公告)号：US4183043A

公开(公告)日：1980-01-08

申请号：US780414

申请日：1977-03-23

申请人： Gerald Dickopp ,  Gerhard Mahler ,  Werner Scholz

发明人： Gerald Dickopp ,  Gerhard Mahler ,  Werner Scholz

IPC分类号： H04N11/22 ,  H04N9/86 ,  H04N11/08 ,  H04N11/24 ,  H04N9/42

CPC分类号： H04N9/86

摘要： The disclosure is an improvement in a three-line sequential transmission system for a color television signal, particularly for recording, and where the sequential signal is transformed again, during reproduction with a series-connection of line delay lines, into three simultaneous color signals, and a luminance signal is obtained by composing the signals from several successive lines. In accordance with the disclosure, the luminance signal has an amplitude ratio between these signals, to increase the picture sharpness in the vertical direction, such that the amount of the luminance transmission function of the entire system, including recording and reproduction, at the frequencies (n+1/2)f.sub.H is substantially equal to those of the frequencies n.multidot.f.sub.H where n=0, 1, 2 . . . and f.sub.H is the line frequency. The composition is effected such that zeros appear in the low frequency range of the transmission function at the frequencies (n.+-.1/3)f.sub.H, and the zeros of the entire system are multiple even-numbered zeros, with the transmission functions of both the recording and the reproduction having a zero. A differential signal, derived from the undelayed signal and the signal delayed by three lines, is fed to the luminance signal in a reproduction circuit.

摘要翻译： 本发明是用于彩色电视信号的三线顺序传输系统的改进，特别是用于记录，并且其中顺序信号在再现期间通过线路延迟线的串联连接被再次变换成三个同时的颜色信号， 并且通过组合来自几条连续线的信号获得亮度信号。 根据本公开，亮度信号具有这些信号之间的幅度比，以提高垂直方向上的图像清晰度，使得包括记录和再现的整个系统的亮度传递功能的量在频率 n + 1/2）fH基本上等于n×fH的频率，其中n = 0,1,2。 。 。 fH是线路频率。 实现组合使得零在频率（n +/- 1/3）fH处出现在传输功能的低频范围内，并且整个系统的零是多个偶数零的，其两者的传输函数 记录和再现具有零。 来自未延迟信号的差分信号和延迟三行的信号在再现电路中被馈送到亮度信号。