Patent ID: 7869698
Filing Date: 2011-01-11
Classification: G11B

Abstract:
1. An information recording/playback method for an information recording/playback apparatus including a data processing section which records data on an information recording medium and reads out data recorded on the information recording medium, an encoder section which converts input data into recording data and supplies the thus converted data to the data processing section, a decoder section which decodes data output from the data processing section, and a system control section which generally controls the data processing section, encoder section and decoder section, comprising: causing the system control section to read out management information of the information recording medium, causing the system control section to recognize a to-be-deleted extent, causing the system control section to recognize space extents, forming a coupled extent by coupling a to-be-deleted extent and space extent in a condition that the extents are adjacent to each other and optimizing the coupled extent as one space extent to be used for recording, and arranging and managing the space extents in a preset rule.