Patent ID: 7239591
Filing Date: 2007-07-03
Classification: G11B

Abstract:
1. An information recording method for recording information on a recording medium, the recoding medium having a first area including first recording data; and a second recording area including second recording data, a minimum pit of the second recording data being based on a 2T system, the second recording data being recorded in such a manner as to be decodable in partial response maximum likelihood (PRML) decoding system, wherein: the first recording data is adapted to be decoded by a first decoding circuit which detects pre-pit data based on a slice level, the second recording data is adapted to be decoded by a second decoding circuit which differs from the first decoding circuit, and the first and second decoding circuit is switched according to first and second recording data, the method comprising; creating the first recording data; and creating the second recording data adapted to the PRML decoding system.