Patent ID: 7113694

Claim:
An audio apparatus for use with a recording medium to record user data thereon, the apparatus comprising: a signal pick-up unit to record information onto the recording medium; an analog signal processor to produce analog signal from digitize data; a digital signal processor to provide the digitized data to the analog signal processor; a control unit to record the user data onto at least one data area of the recording medium, wherein the control unit records a navigation data table onto a navigation data area of the recording medium, the navigation data table containing a plurality of navigation information, at least one of the plurality of navigation information being associated with the user data recorded in the data area and at least one of the plurality of navigation information being associated with presentation control information, wherein the navigation data table includes start address information associated with at least one of the plurality of navigation information, and wherein the control unit checks whether a start address of at least one of the plurality of navigation information has been changed and alters the start address information in the navigation data table in response to the change in the start address of at least one of the plurality of navigation information.