| 摘要 |
PROBLEM TO BE SOLVED: To execute superior information language conversion in a detection window width and min. magnetic reverse interval, etc., by encoding, etc., for selecting a conversion table converting an m-bit information language into an n-bit code word within the plural conversion tables in accordance with the number of continuous zeros in the low-order bit part of the code word immediately before. SOLUTION: An information language from an outside is converted into parallel data with eight bits for each by an S/P converter 51 and inputted to ROM 52. Three-bit table selecting data based on the information language immediately before is inputted from a table selection designating part 55 to ROM 52 together with the eight-bit information language. Encoding data from ROM 52 is latched by a latch 53 and the low-order nine bits are outputted to the designating part 55. The latch 53 inputs the high-order eight bits to the input terminal of a P/S converter 56. ROM 54 transmits seven-bit data to the converter 56 by a boundary connecting conversion rule from the combination of the high-order nine bits within 15-bit encoding data from ROM 52 with the low-order seven bits from the latch 53. Then, the high-order eight bits and the low-order seven bits are integrated so as to be outputted. |
