Embedded servo patterning methods and apparatus

A recordable disk, comprising:

• a first plurality of S1 servo sample wedges in a first servo zone at an outermost position on the disk;
• the S1 servo sample wedges of the first plurality being equally spaced apart circumferentially around the disk by a first angle θ1;
• a second plurality of S2 servo sample wedges in a second servo zone which is radially adjacent the first servo zone, where S2 =S1/N1 and S1, S2 and N1 are integers≧2;
• the S2 servo sample wedges of the second plurality being equally spaced apart circumferentially around the disk by a second angle θ2=θ1*N1;
• and
• the S2 servo sample wedges of the second plurality being in radial alignment with every N1th wedge of the S1 servo sample wedges of the first plurality.

A recording device, comprising:

• at least one recordable disk;
• a spindle supporting the at least one recordable disk;
• a motor for rotating the at least one recordable disk;
• a recording head for recording data to the at least one recordable disk;
• the at least one recordable disk further including:
• a first plurality of S1 servo sample wedges in a first servo zone at an outermost position on the recordable disk;
• a second plurality of S2 servo sample wedges in a second servo zone which is radially adjacent the first servo zone, where S2=S1/N1 and S1, S2, and N1 are integers≧2;
• and
• the S2 servo sample wedges of the second plurality being in radial alignment with every N1th wedge of the S1 servo sample wedges of the first plurality.

A recordable disk, comprising:

• a first plurality of S1 servo sample wedges which are equally spaced apart circumferentially around the disk;
• each wedge of the first plurality of S1 servo sample wedges contiguously radially extending from an outermost position on the disk to an innermost position on the disk;
• a second plurality of S2 servo sample wedges which are equally spaced apart circumferentially around the disk and interleaved with the first plurality of S1 servo sample wedges;
• and
• each wedge of the second plurality of S2 servo sample wedges contiguously radially extending from the outermost position on the disk to a first intermediate position on the disk in between the outermost and innermost positions.