Remote tracking system for moving picture cameras and method

G - Physics – 01 – B

Patent

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Details

G01B 11/00 (2006.01) G01C 1/00 (2006.01) G01S 3/783 (2006.01) G01S 3/786 (2006.01) G01S 13/66 (2006.01) G03B 17/56 (2006.01) H04N 5/232 (2006.01)

Patent

CA 2089550

The system includes a base unit (11) sensitive to infrared (IR) signals (13) transmitted by a mobile remote unit (12) to an IR receiver (16) which is placed behind a rotating set of signal blocking blinders (62) whose position at any time defines a view angle with a position known with precision resulting in the IR signal reception scanning across an area. The base unit (11) detects when the peak strength of the signal occurs and utilizes this data to determine the exact effective angle between the axis of the IR signal (13) and the base unit (11) to position the camera (15) mounted thereon. Receivers (I6) for TILT and two PAN positions, PAN 1 and PAN 2, are used to include range calculations for ZOOM functions. Command circuitry to override the automatic tracking function is provided in the base unit (11).

Le système comprend une unité de base (11) sensible aux signaux (13) infrarouges (IR) transmis par une unité distante mobile (12) à récepteur IR (16) placé derrière un ensemble rotatif d'écrans de blocage de signaux (62) dont la position à un moment quelconque définit un angle visuel ayant une position connue avec précision afin que la réception des signaux IR s'effectue sur une zone voulue. L'unité de base (11) détecte l'intensité de crête du signal et utilise ces données pour déterminer l'angle effectif précis formé entre l'axe du signal IR (13) et l'unité de base (11) afin de positionner la caméra (15) montée sur celle-ci. Des récepteurs (16) pour une position de panoramique verticale TILT et deux positions de panoramique horizontale PAN1 et PAN2 sont utilisés pour inclure des calculs de distance aux fonctions ZOOM. L'unité de base (11) comprend des circuits de commande destinés à annuler l'effet de la fonction de suivi automatique.

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