Patent ID: 7327659

Claim:
A method of recording data on an optical disc, the method comprising: receiving a selection as to a writing mode selected between a first writing mode for recording user data according to a first recording format and a second writing mode for recording user data according to a second recording format; and recording user data using the selected writing mode, wherein the recording the user data comprises: if the selected writing mode is the first writing mode, modulating user data, and recording modulated user data according to the first recording format, and if the selected writing mode is the second writing mode, modulating user data from 1 byte to p-channel bits, and recording modulated user data according to the second recording format such that p/q is between 4.5 and 8 in which the minimum mark length corresponds to q-channel bits, and a format efficiency is between 0.6 and 1.0, wherein p is selected within the range of 12 to 17, and q is selected between 2 and 3.