Stationary-picture transmission system utilizing a digital memory technique

摘要

A narrowband stationary-picture transmission system including means for transmitting information representing the position in the picture of a pointer displayed on the picture, and the pattern of such a pointer, and means for providing the pointer on the picture at the receiving end in accordance with the information transmitted. Any pointer pattern can be added to the picture already transmitted without the need of retransmitting the picture and pointer information.