phase alternation line

Burst phase is the first ten cycles of colorburst in the "porch" of the synchronising pulse in the PAL (Phase Alternation Line) broadcast television systems format.

On 3 January 1963 he gave the first public presentation of the Phase Alternation Line System to a group of experts from the European Broadcasting Union in Hannover.

The European/Australian PAL (Phase Alternation Line rate) and the French-Former Soviet Union SECAM (Séquentiel Couleur Avec Mémoire) standard were developed later and attempt to cure certain defects of the NTSC system.