JPS647480U

JPS647480U -

Info

Publication number: JPS647480U
Application number: JP10224087U
Authority: JP
Priority date: 1987-07-02
Filing date: 1987-07-02
Publication date: 1989-01-17

Description

[Brief explanation of drawings]

第１図は本考案の一実施例のブロツク図、第２
図は第１図の実施例の特性図、第３図は本考案の
他の実施例のブロツク図、第４図は第３図の詳細
回路図、第５図は従来例のブロツク図、第６図は
従来例の特性図である。１……くし形フイルタ回路、２，３……第１、
第２ガラス遅延線、４……レベル調整手段、５…
…加算回路、６，６ａ……減算回路。 Fig. 1 is a block diagram of an embodiment of the present invention;
The figures are a characteristic diagram of the embodiment shown in Fig. 1, Fig. 3 is a block diagram of another embodiment of the present invention, Fig. 4 is a detailed circuit diagram of Fig. 3, and Fig. 5 is a block diagram of the conventional example. FIG. 6 is a characteristic diagram of a conventional example. 1...Comb filter circuit, 2, 3...1st,
Second glass delay line, 4...Level adjustment means, 5...
...addition circuit, 6,6a...subtraction circuit.

Claims

[Claims for Utility Model Registration] In a comb filter circuit that separates a luminance signal and a color signal from a color television signal, a first glass delay line that delays the color television signal by 1H and outputs the delayed signal as a 1H delayed signal; The 1H delayed signal is further delayed by 1H to obtain 2
a second glass delay line outputting as an H-delayed signal, and adjusting the level of each signal so that the ratio of the levels of the color television signal, the 1H-delayed signal, and the 2H-delayed signal is a predetermined ratio. an adding circuit that adds the level-adjusted color television signal, the level-adjusted 1H delay signal, and the level-adjusted 2H delay signal to separate a luminance signal; and the level-adjusted 1H delay signal. A comb filter circuit comprising: a subtraction circuit for subtracting a level-adjusted color television signal and a level-adjusted 2H delay signal from a color television signal to separate a color signal.