Patent ID: 11902659
Assignee: nan
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 19:
20. An automated method for auto-focusing a lighting fixture on a person in a venue who is wearing, or carrying, or holding, or speaking into a microphone at the venue, the venue including a real-time location system (RTLS) having a RTLS tag and a RTLS receiver for locating a position of the RTLS tag in three-dimensional space, wherein the RTLS tag is fixed to the microphone and transmits a signal that is received by the RTLS receiver, the method comprising:
(a) detecting when the microphone is active;
(b) identifying, using the RTLS, the position of the RTLS tag in three-dimensional space in the venue by using the signal transmitted from the RTLS tag and received by the RTLS receiver to calculate the position of the RTLS tag in three-dimensional space,
wherein the position of the RTLS tag in three-dimensional space in the venue is presumed to be the same position as the microphone that the RTLS tag is fixed to;

(c) auto-focusing a set of cameras on the identified position of the RTLS tag in the three-dimensional space in the venue when the microphone is active, each camera thereby outputting a video signal of an area that is in proximity of the RTLS tag which is presumed to include an image of the person in the venue who is wearing, or carrying, or holding, or speaking into the microphone having the RTLS tag fixed thereto;
(d) applying face and body detection to each video signal of the area that is in proximity of the RTLS tag to identify a position adjustment to be applied to the identified position of the RTLS tag in three-dimensional space in the venue,
wherein the position adjustment is calculated from the position adjustments measured with respect to each of the cameras; and

(e) auto-focusing the lighting fixture on the position adjusted identified position of the RTLS tag in three-dimensional space in the venue when the microphone is active, the lighting fixture thereby illuminating an area that is in proximity of the RTLS tag which is presumed to include the person in the venue who is wearing, or carrying, or holding, or speaking into the microphone having the RTLS tag fixed thereto.