TWO-DIMENSIONALLY CODING/STORING METHOD ON TWO-DIMENSIONAL RECORDING MEDIUM OF PARALLEL READ-OUT SYSTEM, TWO-DIMENSIONALLY DECODING/REPRODUCING METHOD AND DEVICE EXECUTING THESE METHODS

摘要

PROBLEM TO BE SOLVED: To make possible high efficiency without directional dependency even when NRZ conversion processing, etc., is performed by answering to a medium storage for coding/storing the one-dimensional data in a parallel read-out system two-dimensional recording medium according to a two-dimensional run length limitation RLL rule and coding respective cells to two-dimensional code value arrangement of m×n cells of one bit. ;SOLUTION: The original data id(q) are converted by limiting with the two-dimensional RLL rule not only simple conversion converting the serial data to the two-dimensional arrangement data of man, and the two-dimensional code value arrangement of m×n matrix cells is obtained. Since such a two-dimensional code value arrangement is satisfied with the conditions such as a two-dimensional minimum restrictive length, maximum restrictive length and continuity, etc., the problem that the value is changed according to directions even by the conversion such as the NRZ, etc., is eliminated. Thus, coding pattern selection processing selecting two-dimensional RLL coded proper code arrangement is performed at every coding processing unit data (q) related to the original data id (q).;COPYRIGHT: (C)1998,JPO