Reproduction data recording methods

A reproduction data recording method for an optical storage medium storing a data cluster divided into a plurality of code words and comprising first recorded data and second recorded data, wherein the code words are grouped into first code words comprising the first recorded data and the second recorded data, and second code words comprising only the first recorded data or the second recorded data, the method comprising:

• storing additional data to a first temporary region of a memory device;
• reading the first recorded data from the optical storage medium and storing the first recorded data to the first temporary region;
• calculating first syndrome data corresponding to the first code words;
• storing the first syndrome data to a second temporary region of the memory device;
• calculating second syndrome data corresponding to the second code word;
• reading the first syndrome data and the second syndrome data for decoding to confirm accuracy of the first recorded data;
• encoding the first recorded data and the additional data to generate encoded data;
• and
• writing the encoded data to the optical storage medium.

A method for an optical storage medium storing a data cluster, the method comprising:

• storing additional data sector to a first temporary region of a memory device;
• reading the data cluster from the optical storage medium;
• storing a first recorded data and a second recorded data of the data cluster respectively to the first temporary region and a second temporary region of the memory device, wherein a storing region in the first temporary region corresponding to the second recorded data is occupied by the additional data sector;
• confirming accuracy of the first recorded data by receiving the first recorded data and a data segments of the second recorded data;
• encoding the first recorded data and the additional data sector from the first temporary region to generate encoded data;
• and
• writing the encoded data to the optical storage medium.