Content distribution system, playback apparatus, content server, usage rule server, accounting server, playback method, content transmission method, usage rule transmission method, accounting method, program, and storage medium

摘要

In a content distribution system, a content provider transmits a motion picture content and usage rule metadata to a playback apparatus. In the usage rule metadata, a rule of secondary use of the motion picture content is prescribed. The playback apparatus has a controller that analyzes the usage rule metadata and controls the operation of the playback apparatus such that a still image is allowed to be extracted from the motion picture content within the limit prescribed in the usage rule. When a user extracts a still image, the playback apparatus generates user metadata in terms of extraction and transmits it to an accounting system. The accounting system performs an accounting process based on the received user metadata. Thus, users are allowed to extract still images from motion picture contents within the limit prescribed by content providers in usage rules, and content providers perform the accounting process to charge fees for secondary use of motion picture contents.