Video disk and recorder with time recorded twice

摘要

A system for recording by frequency-division and time multiplex a television signal divided into frames and a digital data signal divided into blocks. The time durations of the blocks and frames are not evenly divisible but times, for instance seconds, which approximately are different fixed multiples of the number of counted frames and blocks, are recorded together with the counted frames and blocks. The frame time is incremented after a fixed number of frames is counted. The block time is incremented in the block following the incrementing of the frame time.