Ostrolenk, Faber, Gerb & Soffen
Bidirectional communication system for CCTV
 A bidirectional communication system for a CCTV in a monitoring system having a plurality of monitoring cameras, comprising a plurality of rotators, each for rotating a corresponding one of the plurality of cameras in vertical and horizontal directions in response to upward, downward, left and right rotation control signals, a plurality of voice transmission and reception adapters, each mounted to a corresponding one of the plurality of cameras, for transmitting and receiving a voice signal, a plurality of remote controllers, each having a transmitter and a receiver for transmitting and receiving the voice signal remotely through a corresponding one of the plurality of voice transmission and reception adapters, a video selector for selecting a desired one of video signals from the plurality of cameras, a channel selector for selecting a desired channel for voice communication and camera rotation control, a voice processing circuit for performing transmission and reception of the voice signal through the plurality of voice transmission and reception adapters, and a rotator control circuit for generating the upward, downward, left and right rotation control signals for controlling actuation of the plurality of rotators, thereby to control projection angles of the plurality of cameras. 
Goldstar Co., Ltd.
G H G G
G08B H04N G08B G08B
inventional inventional inventional inventional
Hyeon J.
Choi