METHOD OF TRANSMITTING TELEVISION SIGNALS Russian patent published in 2011 - IPC H04N11/02 

FIELD: information technology.

SUBSTANCE: invention can be used to transmit and receive television (TV) signals for broadcast and industrial-institutional television, generated, for example, using a TV camera or other signal sources of black and white, colour, spectrozonal, three-dimensional or some other images via interlaced or line-by-line scanning of TV images. At the transmitting side after analogue-to-digital conversion of the brightness signal E'_Y and two colour difference signals E'_R-Y and E'_B-Y, and generating binary symbols in a k-bit parallel code, a decryption operation is performed for binary symbols of the parallel code of one reading for the brightness E'_Y and two colour difference signals E'_R-Y and E'_B-Y and coincidence signals are generated in form of logic unit for each code combination of the k-bit parallel code of parallel symbols which characterise one signal level from m=2k for the current moment in time Δt for one reading, after which each coincidence signal in form of logic unit for the brightness E'_Y and two colour difference signals E'_R-Y and E'_B-Y is modulated at its carrier frequency via quadrature modulation. Multiplexing is then performed for digital modulated signals of separate levels for the brightness E'_Y and two colour difference signals E'_R-Y and E'_B-Y, as well as digital synchrosignals, and at the receiving side after demultiplexing signals, digital modulated signals of separate levels for the brightness E'_Y and two colour difference signals E'_R-Y and E'_B-Y are picked up and then synchronously detected, after which the obtained signals are used to generate binary symbols of the k-bit parallel code of initial digital brightness signals E'_Y and two colour difference signals E'_R-Y and E'_B-Y for each reading. Said signals then undergo digital-to-analogue conversion, after which the obtained analogue brightness signals E'_Y and two colour difference signals E'_R-Y and E'_B-Y are amplified and then used to display the obtained video information.

EFFECT: generation of digital television signals and transmission thereof in a smaller communication channel frequency band.

2 cl, 2 dwg