Information recording medium, information recording method and information reproduction method

A method for determining whether reproduction of data recorded in an information recording medium is allowed,

• wherein the information recording medium including a user area, and a spare area including a replacement area, wherein the replacement area may be used instead of a defective area in the user area,
• wherein the user area and the spare area include a plurality of sectors,
• the method comprising the steps:
• determining whether a format of data recorded in the information recording medium is a predetermined format;
• and
• determining whether reproduction of data recorded in the information recording medium is allowed, in accordance with an attribute value of the read-out defect replacement allowance attribute data, and
• the defect replacement allowance attribute data indicates whether recording of the data has been executed in a state that the execution of a defect replacement process is allowed, wherein the defect replacement process, the defective area in the user area is replaced with the replacement area in the spare area,
• wherein defect replacement allowance attribute data is read-out from the sector, the data being recorded in the sector, when it is determined that the format of data recorded in the information recording medium is the predetermined format.
• wherein the predetermined format is DVD-Video format.