Method and apparatus for recording servo frame, storage disk, and method and apparatus for obtaining servo frame information

An apparatus for sector information and track information into a servo frame on a storage disk, comprising:

• a sector information rearranging section for rearranging serial bits of the sector information that is binary data;
• an ExOR section for performing an ExOR (exclusive OR) on the sector information, the serial bits of which have been rearranged by said sector information rearranging section, and the track information, so that an exclusive logical sum is obtained;
• and
• a writing section for wiring the exclusive logical sum obtained by said ExOR section into the servo frame.

A method for obtaining servo frame information serving as combined data generated by combining sector information and track information from a storage disk on which the combined data is recorded into a servo frame formed on the disk, comprising the steps of:

• (a) obtaining the combined data from the servo frame;
• (b) rearranging serial bits of the sector information that is binary data;
• and
• (c) performing an ExOR on the combined data obtained in said step (a) obtaining and the sector information, the serial bits of which have been rearranged in said step (b) of rearranging to generate the track data.

An apparatus for obtaining servo frame information serving as combined data generated by combining sector information and track information from a storage disk on which the combined data is recorded into a servo frame formed on the disk, comprising:

• a combined data obtaining section for obtaining the combined data from the servo frame;
• a sector information rearranging section for rearranging serial bits of the sector information that is binary data;
• and
• an ExOR section for performing an ExOR on the combined data obtained by said combined data obtaining section and the sector information, the serial bits of which have been rearranged by said sector information rearranging section, so that the track information is generated.