Patent ID: 7218592

Claim:
A method for writing or reproducing a data to/from an optical recording medium, the optical recording medium including a Defect Management Area for managing defective areas, comprising: determining whether data to be written is real time data; specifying defective areas by a host based on information on defective areas listed on the Defect Management Area prior to writing real time data, if the data to be written is real time data; generating by the host a write command such that the specified defective areas are not allocated to the real time data to be written as a result of the specifying step; writing the real time data by a recording/reproducing device on the optical recording medium in response to the write command; and writing file information on a specific area of the optical recording medium, wherein the file information includes a size information specifying a size of the real time data written in each data area divided by the defective areas and a location information specifying a location of each of the divided areas.