RECORDING METHOD FOR DIGITAL MAGNETIC RECORDING MEDIUM FOR COPYRIGHT PROTECTION AND VARIABLE-SPEED REPRODUCTION

摘要

PROBLEM TO BE SOLVED: To realize copyright protection and variable-speed reproduction at the same time. SOLUTION: The video track of a video tape is divided into a scrambling data area recording scrambled video data and a descrambling information area recordign descrambling information for descrambling this scrambled video data. Then video data is recorded in these scrambling data area and descrambling information area.