An index scan apparatus and the method thereof applied to a video tape recorder. Video signals corresponding to one screen among reproduced video signals are stored whenever an index signal is detected during the reproducing mode, and video signals received during the setting of an index scan mode are...http://www.google.de/patents/US5365384?utm_source=gb-gplus-sharePatent US5365384 - Video tape recorder having automatic index scan method and picture-in-picture function
