Apparatus for creating and managing navigation information in rewritable recording medium and method therefor

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.

A method of creating and writing navigation data on a recording medium, the method comprising the steps of:

• recording user data onto at least one data area of the recording medium;
• recording a navigation data table onto a navigation data area, 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;
• checking whether a start address of at least one of the plurality of navigation information has been changed;
• and
• altering 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.

A method of managing navigation data using an audio apparatus and a recording medium, the audio apparatus comprising a signal pick-up unit, an analog signal processor, a digital signal processor and a control unit, the method comprising the steps of:

• providing digitizing data with the digital signal processor;
• producing analog signal with the analog signal processor from the digitize data received from the digital signal processor;
• recording information onto the recording medium with the signal pick-up unit,
• wherein the control unit prepares a navigation data table for recording 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, and 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.