TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

HELICAL SCAN [1 record]

Record 1 2006-04-06

English

Subject field(s)
  • Audiovisual Techniques and Equipment
  • Video Technology
  • Storage Media (Data Processing)
DEF

In video [and computer] systems, a method of achieving the high tape speeds necessary for video recording by moving both the tape and the video heads.

CONT

Helical scan uses two video heads mounted on opposite sides of a revolving drum. The video head drum spins at one frame per revolution so that each head scans one field per revolution. As the tape winds around the drum of the video head, it assumes a helical shape, thus giving the process its name.

OBS

The Dictionary of New Media is available at: <a href="http://hepdigital.com/" title="http://hepdigital.com">http://hepdigital.com</a>.

French

Domaine(s)
  • Audiovisuel (techniques et équipement)
  • Vidéotechnique
  • Supports d'information (Informatique)
DEF

Méthode d'enregistrement à deux ou quatre têtes magnétiques rotatives dont le mouvement est coordonné à celui du ruban.

Spanish

Campo(s) temático(s)
  • Técnicas y equipo audiovisuales
  • Técnicas de video
  • Medios de almacenamiento (Procesamiento de datos)
DEF

Método para usar la cinta magnética derivado del registro de video, en que la cinta se enrolla en forma helicoidal alrededor de un tambor giratorio, de manera que una o más cabezas incrustadas en el tambor registran las pistas diagonales en la cinta.

CONT

La exploración helicoidal permite que los datos se registren con una densidad muy alta y de aquí lo barato que resulta el almacenamiento.

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