| 摘要 |
A video replay store for a multi-channel digital video tape recorder, comprises a respective channel store for each channel, each channel store comprising a plurality of field stores which are written in and read from cyclically, a respective field boundary detector for each channel, each field boundary detector 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, and a replay store controller for supplying write requests and read requests in a predetermined sequence to all of the channel stores, the replay store controller 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.
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