| 摘要 |
PURPOSE:To attain recording with high recording density by dividing a digital signal into a 4-bit data word, corresponding the word to a prescribed code word and inserting a prescribed bit between words. CONSTITUTION:A 6-bit code word where >=1 set or <=4 sets of the 2nd logical bits clipped by the 1st logical bit exist consecutively to an inputted digital signal of 4-bit/word and also <=3 sets of the 2nd logical bits exists consecutively at the end of the data word is formed. Then bits where >=1 or <=4 sets of the 2nd logical bits exist consecutively are inserted to each code word. A bit train is formed by arranging serially merging bits and code words generated in this way werially. |
