Sony image processing units over ISDN and PSTN networks: who is using them and why

The Sony Digital Information Handler DIH2000 is capable of sending pictures, high quality colour images, charts and graphic layouts with text and handwriting, digital computer data and audio around the world in a matter of seconds. Over standard telephone lines images are sent in less than a minute. When connected to a digital leased line or the ISDN an image can be sent in only ten seconds. The DIH digital technology also makes it possible to communicate across international boundaries and different TV standards. The author looks at several applications by the police, antique dealers, manufacturing companies, the military and the press