Patent ID: 8656435
Filing Date: 2014-02-18
Classification: H04N

Abstract:
1. A method of revealing a metadata item related to a segment of an audio-visual data stream, said method comprising: performing the method in a physical device that is operable to perform the following steps: receiving said audiovisual data stream and metadata items at a client, wherein each of the metadata items is related to one or more segments of said audiovisual data stream, and each segment of the one or more segments comprises a continuous fragment of a single programme, wherein at least one segment of the one or more segments is associated with segment reveal control metadata that indicate metadata items related to said at least one segment should not be revealed until the at least one segment has been displayed; receiving, at said client, a viewer selection of a segment to view; checking whether or not segment reveal control metadata are associated with the selected segment; playing back the selected segment if no segment reveal control metadata are associated with the selected segment; if segment reveal control metadata are associated with the selected segment: