A method for writing an audio/video information stream to an optical disc, and for reading the information from disc. The information stream includes alternative video parts which are recorded in an interleaved manner; an interleaved unit includes angle blocks, each angle block including one portion...http://www.google.com/patents/US7895391?utm_source=gb-gplus-sharePatent US7895391 - Method for recording information on a record medium, record medium containing information, and method and device for reading information from a record medium
