Method and apparatus for detecting errors in DVD data

An apparatus for analyzing errors within a bitstream, the apparatus comprising:

• circuitry for reading data and error information;
• an error processor for determining number of PI errors and number of PO errors in said read data;
• circuitry for computing a first correction code for said read data;
• circuitry for comparing said first correction code to a second correction code that is provided for comparison;
• a circuit for comparing errors in the data in order to determine whether a number of errors in said read data exceeds the number of errors that can be corrected;
• and
• at least one display means for displaying at least one of the following:
• number of uncorrectable PI rows in said read data;
• number of uncorrectable PO columns in said read data;
• number of correctable PI rows in said read data;
• and
• number of correctable PO columns in said read data.

A system for analyzing errors within data read from DVD media, the system comprising:

• a DVD medium reader that reads at least one block of data stored on a DVD medium;
• an error processor that receives the at least one block of data from the DVD reader and determines at least one of:
• number of PI errors in at least one row of the data block read and number of PO errors in at least one column of the data block read;
• and
• a visually perceptible display for identifying the block of data read and for displaying at least one of the following:
• whether the PI errors in the at least one row are uncorrectable, number of corrected PI errors in the at least one row when the PI errors are correctable, whether the PO errors in the at least one column are uncorrectable, and number of corrected PO errors in the at least one column when the PO errors are correctable.

A method for analyzing errors within data read from DVD media, the method comprising:

• reading at least one block of data stored on a DVD medium;
• determining at least one of:
• number of PI errors in at least one row of the data block read and number of PO errors in at least one column of the data block read;
• identifying the data block read;
• and
• identifying the block of data read and displaying at least one of the following:
• whether the PI errors in the at least one row are uncorrectable, number of corrected PI errors in the at least one row when the PI errors are correctable, whether the PO errors in the at least one column are uncorrectable, and number of corrected PO errors in the at least one column when the PO errors are correctable.