Fallback mechanism for data reproduction

A method for reproducing digital data, the digital data being present in a first format and in a second format, the method comprising acts of:

• selecting a reproduction mode from a group consisting of a first mode where the digital data is in the first format, and a second mode wherein the digital data is in the second format;
• reproducing the digital data with the digital data in the selected mode;
• monitoring operability of the digital data reproduction in the selected mode;
• and
• in response to detecting a failure in the selected mode detected by the monitoring act, switching to an operable mode,
• wherein the switching act comprises storing a failure characteristics in a memory including updating an index table by replacing a reference to an object in a selected format causing the failure by a reference to an object in a different format of the operable mode, and consulting the failure characteristics and the updated index table in connection with a next reproduction of the digital data in the selected mode using the selected format except where the failure had occured where the different format is used for the reproduction of the digital data in accordance with the updated index table, wherein the failure characteristics comprises state of the digital data just before the failure.

A system for reproducing digital data, the digital data being present in a first format and in a second format, the system comprising:

• a read section for reading the digital data;
• an output section for outputting the digital data;
• and
• a control section for controlling the read section and the output section,
• the control section being operable to support a first mode where the digital data is reproducing according to the first format, and at least a second mode where the digital data is reproduced according to the second format,
• wherein the control section monitors the operability of the digital data reproduction in a selected mode and switches to an operable mode in response to detecting a failure in the selected mode, and
• wherein the control section updates an index table referenced by the read section by replacing a reference to an object in a selected format causing the failure by a reference to an object in a different format of the operable mode so that the index table is repaired and allows reproduction of the digital data in the selected mode using the selected format except where the failure had occured where the different format is used for the reproduction of the digital data in accordance with the repaired index table.

A method for reproducing digital data, the digital data being present in a first format and in a second format, the method comprising acts of:

• selecting a reproduction mode from a group consisting of a first mode where the digital data is in the first format, and a second mode wherein the digital data in in the second format;
• reproducing the digital data with the digital data in the selected reproduction mode;
• monitoring by a controller the operability of the digital data reproduction in the selected reproduction mode;
• in response to detecting a failure in the selected reproduction mode detected by the monitoring act, switching to an operable mode;
• and
• updating an index table referenced prior to the reproducing act, wherein the updating act replaces a reference to an object in a selected format causing the failure by a reference to an object in a different format of the operable mode so that the index table is repaired and allows reproduction of the digital data in the selected mode using the selected format except where the failure had occured where the different format is used for the digital data reproduction in accordance with the repaired index table.