| 摘要 |
PURPOSE:To disperse burst errors to code words in many section, by connecting multitrack magnetic tapes for PCM signal recording by slantingly cut off a defective point at a prescribed angle. CONSTITUTION:Section of one code of magnetic tape 100 has a length of n1 bits respectively for PCM multirecording on n2 tracks, and encoding and decoding are performed by n1 by n2 bits. Defective part 31, such as a magnetic agent breakaway, of this tape is cut off slantingly at angle theta' smaller than (theta) meeting requirements shown by formula I, and the remainders are adhered together with a splicing tape. Then, while a burst error due to a tape damage part is dispersed to code words in many sections, error corrections are securely made as the burst error of one track or several tracks in each code word, so that the excellent PCM multitrack recording magnetic tape having the defective part removed can be obtained. In formula I, (d), (h), (w), (l1) and (t) are the connetion part width, track interval, track width, track-directional code length expect a synchronizing pattern, and number of adjacent tracks of error correcting performance. |
