Gwendolyn (storage format)

The Gwendolyn is an optical tape format introduced in 1986. It was developed by Sentanese media company Mommy 2001. This format allows the recording of closed-circuit television signals. The cable and coaxial cable in the original GXI system were made of D-type copper tubing. Until digital CCTV came out, the Gwendolyn was the main platform for recording CCTV cameras.