Patent ID: 6154504
Filing Date: 2000-11-28
Classification: G11B,H03M,H04L

Abstract:
An encoding method of encoding 8-bit data into a 10-bit code using an RDS trellis in which:the difference between a maximum RDS (running digital sum) value indicating a maximum value of the RDS associated with said 10-bit code and a minimum RDS value indicating a minimum value of the RDS associated with said 10-bit code is set to 6;the RDS at the start point in the RDS trellis representing the change in the RDS associated with said 10-bit code is set to a value equal to the minimum RDS value +2 or equal to the maximum RDS value -2;when the RDS at the start point is equal to the minimum RDS value +2, the RDS at the 9th bit counted from the start point is inhibited from having a value equal to the minimum RDS value +1;when the RDS at the start point is equal to the maximum RDS value -2, the RDS at the 9th bit counted from the start point is inhibited from having a value equal to the maximum RDS value -1; andthe RDS at the end point of said RDS trellis is set to a value equal to the minimum RDS value +2 or equal to the maximum RDS value -2.