| 摘要 |
<p>An input signal provided to a video cassette recorder has the following format: a vertical synchronization pulse (101) followed by digital data (data periods 1-256) included in 256 data periods. Each data period has 32 bytes of data followed by a horizontal sync pulse (horiz 1-255) which includes a resynchronization pulse. The first half of the digital data is the same as the last half of the digital data. The last half of the digital data is inverted so that the signal average is constant. During data recovery, the last half is stored over the first half of data except during medial dropout.</p> |
