Colour television systems

HELECTRICITY H04Electric communication H04NPICTORIAL COMMUNICATION

H04N11/00Colour television systems

H04N11/002High definition systems H04N11/004involving two-channel transmission H04N11/006involving bandwidth reduction H04N11/008with transmission of the extra information by means of quadrature modulation H04N11/02with bandwidth reduction H04N11/04using pulse code modulation H04N11/042Codec means H04N11/044involving transform coding H04N11/046DPCM H04N11/048Sub-Nyquist sampling H04N11/06Transmission systems characterised by the manner in which the individual colour picture signal components are combined H04N11/08using sequential signals only H04N11/10in which colour signals are inserted in the blanking interval of brightness signal H04N11/12using simultaneous signals only H04N11/14in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information H04N11/143Encoding means therefor H04N11/146Decoding means therefor H04N11/16the chrominance signal alternating in phase H04N11/162Encoding means therefor H04N11/165Decoding means therefor H04N11/167a resolution-increasing signal being multiplexed to the PAL-system signal H04N11/18using simultaneous and sequential signals H04N11/183Encoding means therefor H04N11/186Decoding means therefor H04N11/20Conversion of the manner in which the individual colour picture signal components are combined H04N11/22in which simultaneous signals are converted into sequential signals or vice versa