Detection of data in burst cutting area of optical disk

An apparatus for generating outgoing data to be provided on an optical disk in a burst cutting area, the burst cutting area further comprising markings causing a marking frequency spectrum when reading out the burst cutting area, the apparatus comprises:

• a data processing device for generating processed data from incoming data;
• and
• a channel encoder for receiving the processed data to supply the outgoing data having an outgoing data frequency spectrum with a low frequency component that is suppressed to prevent interference with a low frequency component of the markings;
• and
• wherein the data processing device comprises a pre-encoder for pre-encoding incoming data by replacing data sequences of the incoming data by data sequences of processed data, the processed data comprises data sequences having a smaller low frequency content than the corresponding data sequences of the incoming data, a number of bits of the data sequence of the processed data being larger than a number of bits of a corresponding one of the data sequence of the incoming data, and
• wherein the pre-encoder is configured for coding the sequences 00, 01, 10, 11 of the incoming data into the respective corresponding processed sequences 1010, 0001, 0111, 0101 of the pre-encoded data.

A method of creating outgoing data to be provided on an optical disk in a burst cutting area, the burst cutting area further comprising markings causing a marking frequency spectrum when reading out the burst cutting area, the method comprises:

• data processing for generating processed data;
• and
• channel coding for receiving the processed data to supply the outgoing data having an outgoing data frequency spectrum having a low frequency component that is suppressed to prevent interference with a low frequency component of the markings spectrum frequency, and
• pre-encoding incoming data by replacing sequences of the incoming data by sequences of processed data, the outgoing data comprises data sequences having a smaller low frequency content than the corresponding data sequences of the incoming data, a number of bits of the data sequence of the processed data being larger than a number of bits of a corresponding one of the data sequence of the incoming data, and
• wherein the pre-coding comprises coding the sequences 00, 01, 10, 11 of the incoming data into the respective corresponding processed sequences 1010, 0001, 0111, 0101 of the processed data.