enregistrement azimutal

Traductions

• anglais

  Auteur : Grenier, Jean-Guy, 1980

  Définition

  The video signal recording method used in the Betamax. It takes advantage of azimuth loss which occurs particularly at higher frequencies when the azimuth angle of the recording head gap is different from that of the playback head gap. By giving video heads A and B a relative angle difference of 14°, when the track recorded by head A is played back, the track recorded by head B will not be reproduced because of azimuth loss. In the same way, during track B playback, the track A signal will not be picked up. This allows extended playing and recording time since the empty space between tracks is not needed for preventing crosstalk. Diagonal head gaps are used for this kind of azimuth recording.

  Terme :

  1. azimuth recording