JPS6147580U

JPS6147580U - Color video signal reproducing device

Info

Publication number: JPS6147580U
Application number: JP1984130411U
Authority: JP
Inventors: 雅彦鶴田; 武岡内; 泰俊松尾
Original assignee: 日本ビクター株式会社
Priority date: 1984-08-30
Filing date: 1984-08-30
Publication date: 1986-03-29
Also published as: KR860002422U; KR890007510Y1

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案装置の構成を示すブロック系統図、第２
図、第３図及び第４図は夫々本考案装置の各実施例を示
すブロック系統図である。１・・・入力端子、２・・・第１の信号処理回路、３・
・・第２の信号処理回路、４・・・遅延手段、５・・・
混合回路、６・・・再生カラー映像信号出力端子、９・
・・磁気テープ、１１・・・高城フィルタ、１２・・・
低域フィルタ、１３・・・ＦＭ復調器、１４・・・再生
搬送色信号処理回路、１５，１９・・・ＩＨ遅延回路、
１６・・・ＡＭ変調器、１７・・・超音波遅延線路、１
８・・・謀復調器、２０．２２・・・減算回路、２１・
・・リミツタ。Figure 1 is a block system diagram showing the configuration of the device of the present invention;
3 and 4 are block system diagrams showing respective embodiments of the device of the present invention. DESCRIPTION OF SYMBOLS 1... Input terminal, 2... First signal processing circuit, 3.
...Second signal processing circuit, 4...Delay means, 5...
Mixing circuit, 6... Reproduction color video signal output terminal, 9.
...Magnetic tape, 11...Takagi filter, 12...
Low-pass filter, 13...FM demodulator, 14...Reproduction carrier color signal processing circuit, 15, 19...IH delay circuit,
16... AM modulator, 17... Ultrasonic delay line, 1
8... Demodulator, 20.22... Subtraction circuit, 21.
...Limitsuta.

Claims

[Scope of utility model registration request]

(1) Of the first and second signal processing circuits to which multiplexed signals reproduced from the recording medium are respectively supplied, the reproduced luminance signal is taken from the first signal processing circuit, and crosstalk from adjacent tracks is detected. A reproduced carrier color signal is extracted from the second signal processing circuit having a comb-shaped filter for removing the signal, and the reproduced luminance signal and the reproduced carrier color signal are mixed by a mixing circuit and output as a reproduced color video signal. A color video signal reproducing device comprising a delay means for delaying the reproduced luminance signal supplied to the mixing circuit by one horizontal scanning period relative to the reproduced carrier color signal.

(2) the delay means includes a delay circuit that is supplied with the reproduced luminance signal and delays it by one horizontal scanning period; and a first subtraction circuit that subtracts the output signal of the delay circuit and the reproduced luminance signal, respectively; A limiter that limits the amplitude of the output signal of the first subtraction circuit, and a second subtraction circuit that subtracts the output signal of the limiter from the output signal of the delay circuit to output a reproduced luminance signal with reduced noise. A color video signal reproducing device according to claim 1 of the utility model registration claim.