Patent ID: 6970400
Filing Date: 2005-11-29
Classification: G11B

Abstract:
1. A recording and reproducing apparatus for recording information on and reproducing information from an information recording medium including a substrate without pit patterns and a magnetic layer provided on the substrate, the magnetic layer having a servo pattern and management information recorded thereon as magnetic marks, the recording and reproducing apparatus comprising: an optical head for irradiating the information recording medium with light during information recordation; a recording magnetic head for applying a recording magnetic field to the information recording medium; a reproducing magnetic head for detecting magnetic leakage fields from the magnetic marks on the magnetic layer during information reproduction; a first positioner for positioning the optical head and the recording magnetic head at a target track of information recording medium on the basis of magneto-optical signals from the magnetic marks; and a second positioner for positioning the reproducing magnetic head at the target track during information reproduction, with the reproducing magnetic head using the detected magnetic leakage fields leaking from the magnetic marks to position the reproducing magnetic head.