Information recording medium, recording device and recording method for information recording medium, reproduction device and reproduction method for information recording medium, computer program for recording or reproduction, and data structure containing control signal

Abstract From the Canadian patent

An information recording medium (100) includes: a user data area (108) for storing recording data; a plurality of temporary defect management areas (104 105) for temporarily recording defect management information (120) as the base for defect management of a defect in the data area; and a flag area (111) for recording identification information identifying a temporary defect management area containing valid defect management information among the plurality of temporary defect management areas. The identification information is recorded as the type of a combination pattern of the area defined as a recorded state by a predetermined rule and the area remaining as a non-recorded state.