When was the filmless camera invented?

Sony Corporation of Japan invented Mavic magnetic camera, and announced this invention to the press on August 24th, 198 1. This kind of camera uses magnetic disk, uses electromagnetic system to replace chemical substances, does not need film, saves the process of development and printing, and is a revolution in the field of photography technology.

The size of a filmless camera is similar to that of a traditional 35mm reflex camera. After the optical signal enters the lens, it is converted into an electrical signal by a photoelectric cell and recorded on an optical disc with a length of 6 cm, a width of 5.6 cm and a weight of 8 g. ..

Mavic camera can store 50 color pictures, and the pictures can be immediately displayed on TV screen through film reader or reproduced as photos. The camera can shoot at the speed of 10 per second, and can also edit the picture and control the color brightness with the help of electronic equipment as needed. The output signal image can be transmitted by cable.