Index information recording method for picture information filing system

摘要

In a picture information filing system using an endless magnetic tape (43), which has a plurality of picture information recording tracks (482) for a plurality of units of recording two-dimensional picture information (3) in predetermined blocks and an index information recording track (481) for recording index information for the individual unit picture information, the index information is temporarily stored in a random access memory (13) as unit index information groups each consisting of a predetermined number of index information items, recording start index information consisting of a peculiar code and an address representing the position from which to record the next picture information is added to the last index information item in the last index information group, and the individual index information groups are recorded in predetermined blocks of the index information recording track, each index information group in each particular block.