Patent ID: 6108158
Filing Date: 2000-08-22
Classification: G11B

Abstract:
A disk type recording and reproducing apparatus comprising:a disk type recording medium; anda dual head includinga reading head for reading from the disk type recording medium, the reading head having a core, anda writing head for writing on the disk type recording medium, the writing head having a core,wherein a center of the core of the reading head is shifted in the radial direction of the disk type recording medium relative to a center of the core of the writing head;wherein the disk type recording medium has a plurality of recording tracks, and each of the recording tracks has a plurality of sectors;wherein each of the sectors has an ID division provided ahead of a data division disposed in the circumferential direction of the disk type recording medium, the ID division having recorded therein identification information identifying the sector;wherein a center line of the ID division is shifted in the radial direction of the disk type recording medium relative to a center line of the data division by a distance equal to a distance by which the center of the core of the reading head is shifted in the radial direction of the disk type recording medium relative to the center of the core of the writing head;wherein the data division has identification information identifying the sector stored in a position ahead of data to be recorded and reproduced; andwherein the disk type recording and reproducing apparatus further comprises:recording means for identifying a sector in which data is to be recorded based on the identification information recorded in the ID division of the sector, and recording data in the data division of the sector with the writing head; andreproducing means for identifying a sector from which data is to be reproduced based on the identification information stored in the data division of the sector, and reproducing data from the data division of the sector with the reading head.