JPS57143991A - Video recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the scale of a circuit by enabling the reproduction of a color signal on NTSC basis and that on PAL basis by using two 1H delay lines. CONSTITUTION:When a color sinal of the NTSC system is inputted, the reproduced color signal input from an input terminal 1 is supplied to an adding circuit 13 directly and through a 1H delay line 3 and a switch circuit 12 which selects a signal passed through the 1H delay line 3, and the adding circuit 13 adds both the input signals to eliminate crosstalk between adjacent tracks, so that a reproduced color signal of the NTSC system appears at an output termnal 6. When a color signal of the PAL system is inputted, the reproduced color input signal is inputted to the adding circuit 13 directly and through 1H delay lines 3 and 11 and the circuit 12 which selects a signal delayed by two horizontal lines through both the delay lines this time, and the circuit 13 adds both the input signals to eliminate crosstalk between adjacent tracks, so that a reproduced color signal of the PAL system appears at the output terminal 6. Consequently, this device enables reception on those two systems by using two 1H delay lines although a 1H delay line and a 2H delay line are both necessary in a conventional device.