TELEVISION SYSTEM Russian patent published in 1994 - IPC

FIELD: color television. SUBSTANCE: E_m(t) is formed with the use of reflex-modulated signals E₃(t). Quadrature modulation of subcarrier in phase 0 and ± Π/2 is performed with video signals E_1-1(t), E_1-2(t) at transmitting site forming reflex-modulated signals E₃(t) on subcarriers which selection of frequencies f provides for required deferences of phase on subcarriers in adjacent lines of one frame and in lines of contiguous frames identical by numbers. Formed reflex-modulated signals are transmitted within time intervals of full color TV signal assigned for them. During reception elements of reflex-modulated signals E_m(t) are isolated from full color TV signal E₃(t), are delayed by time intervals multiple of duration of television scanning, delayed and undelayed elements are multiplied by harmonic signals U₁(t), U₂(t), video signals E_1-1(t), E_1-2(t) are algebraically summed up and isolated from signals obtained with summing. EFFECT: enhanced volume of information transmitted by full color TV signal, improved noise immunity of transmitted information. 21 cl, 21 dwg