The realtime storage for digital image is the base of video interpretation. With often recording video signal on the tape
low precision
however
is obtained beacause of the low distinguishing of video tape recorder. A method of realtime video storage is studied in the light of the characteristic of digital image
which make HD be a media through lossless compression of digital image. Realtime restorage for 512?512?8bit video image can be realized by this method
and the architecture is simple and practical. So it is a new video storage method.