| 摘要 |
<p>A video replay store for a multi-channel digital video tape recorder, comprises a respective channel store (5, 6, 7, 8) for each channel (A, B, C, D), each channel store (5, 6, 7, 8) comprising a plurality of field stores which are written in and read from cyclically, a respective field boundary detector (21, 22, 23, 24) for each channel (A, B, C, D), each field boundary detector (21, 22, 23, 24) supplying a first pulse in response to each field boundary where an odd field changes to an even field, and a second pulse in response to each field boundary where an even field changes to an odd field, in the off-tape data in the respective channel (A, B, C, D), and a replay store controller (9) for supplying write requests and read requests in a predetermined sequence to all of the channel stores (5, 6, 7, 8), the reply store controller (9) stepping on to the next state in the predetermined sequence in response to each first first pulse following a second pulse and each first second pulse following a first pulse. </p> |
