A process for the pal - decoding and the associated logic pal - decoder

摘要

in the magnetic recording of video signals, it is known to improve quality of color reproduction in unterabgetasteten farbdifferenzsignalen chrominanzsignale generated record. the unterabtastung reproduction is reversed, thereby to aufzeichnungsbandbreite bandbreitenvergru00f6u00dfertes chrominanzsignal is available.$a in the processing of pal encoded chrominanzsignalen this bandbreitenvergru00f6u00dferung cannot be achieved, because, due to the switch of the tru00e4gerphase rows, one of the two chrominanzsignalkomponenten, the additional information obtained in unterabtastung the demodulation system.the present invention is $a in the described problem solved for each component of the demodulation chrominanzsignals a quadraturdemodulator available, and that the demodulation with equal demodulationsfrequenzen farbdifferenzsign obtained alanteile of addierern to bandbreitenvergru00f6u00dferten farbdifferenzsignalen together.