Helical scan data recording apparatus and a helical scan data reproducing apparatus

摘要

A data recording apparatus is disclosed comprising memory circuits for storing video and sound data, and an error check code generation circuit for generating check codes for the data. The check code data is stored in a data block including the data and the check code data generated in accordance with the data. The apparatus includes an interleaving portion for reading the data and check code data for every stored data block and interleaving a predetermined number of the data blocks to provide an editing unit. The apparatus further includes a recording portion for recording the interleaved data blocks on a magnetic tape through helical scanning of every editing unit. The data may include video data and corresponding sound data. The video data is recorded on the magnetic tape on consecutive (t-p) tracks and the sound data is recorded on the magnetic tape on consecutive p tracks. One of a plurality of interleaving patterns is selected, and data indicative of the interleaving pattern is also recorded at a sub-code area on each track. A data reproducing apparatus including a de-interleaving portion for restoring the interleaved data block is also disclosed.