Controlling video replay stores

摘要

A video replay store controller wherein appropriate ones of a plurality of field stores are selected for storing replayed video data in a digital video tape recorder (DVTR). The controller comprises a transition detector associated with each of a plurality of video replay heads, for detecting changes in field identifiers associated with consecutively replayed video data blocks received from that video replay head, thereby detecting a field transition in the data replayed by that video replay head.