Abstract :
CLOSED-CIRCUIT TELEVISION is one of the many methods of transmitting intelligence that makes use of the plant of the Bell System. Closed-circuit television is differentiated from television broadcasting, familiar to all, in that the originator provides individual distribution of the television signal he has produced to specific preselected points. Several rather general fields of application of closed-circuit television have been found useful in the past. These may be outlined as follows: 1. The reproduction of outstanding entertainment events as they happen at a large number of points on a country-wide basis. 2. The dissemination of information to groups of people scattered at numerous points throughout the country, such as for sales promotion or educational purposes. 3. The industrial use of the service on a local basis for transmitting information from one point, to another where it will be of more value in carrying out the business of the industry.
