Patent ID: 7616544
Filing Date: 2009-11-10
Classification: G11B

Abstract:
1. An access unit which accesses a record medium, the record medium including a user area for recording user data which is recorded and reproduced based on an instruction given by a user, the access unit comprising: a recording section for recording test data in the user area based on a predetermined test condition in the user area during recording of the user data in the user area; a reading section for reading the test data recorded in the user area by the recording section; and an adjusting section for referring to the test data read by the reading section, and adjusting an access parameter for accessing the record medium, wherein the recording section is configured to begin recording the test data at a position which is a predetermined radial distance toward an outer circumference of the record medium from a first position in which a first portion of the user data finishes being recorded in the user area, and configured to begin recording a second portion of the user data in a second position which is a predetermined radial distance toward the outer circumference of the record medium from a position in which the test data finishes being recorded.