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

摘要

An information record medium comprises video information for indicating a main-video, sub-video information for indicating a sub-video which can be displayed at least partially over the main-video, and sub-video control information including (i) a plurality of types of control information elements for display control of the sub-video information in various methods set in advance and (ii) type indicating information to indicate presence or absence, or effectiveness or ineffectiveness of the control information elements by each of the types.