The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2000
Filed:
May. 19, 1997
Yukari Katayama, Yokohama, JP;
Hitoshi Ogawa, Yokohama, JP;
Motoyasu Tsunoda, Fujisawa, JP;
Tsuneo Hirose, Odawara, JP;
Akira Kojima, Odawara, JP;
Eisaku Saiki, Yokohama, JP;
Yasunori Kaneda, Yokohama, JP;
Katsuhiro Tsuneta, Odawara, JP;
Shoichi Miyazawa, Yokohama, JP;
Terumi Takashi, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A disk type recording and reproducing apparatus includes a disk type recording medium, and a dual head including a reading head and a writing head. 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. The disk type recording medium has a plurality of recording tracks each having a plurality of sectors. 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 has recorded therein identification information identifying the sector. 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. The data division has identification information identifying the sector stored in a position ahead of data to be recorded and reproduced.