Patent ID: 7778516

Claim:
A video and/or audio signal processing system comprising: a recorder configured to record video and/or audio material on a recording medium, the recorder including, a first generator configured to generate first material identifiers for identifying respective pieces of material on the medium such that each piece is differentiated from other pieces on the medium, a second generator configured to generate second identifiers for pieces of material, the second identifiers being generated in accordance with the first material identifiers and a recording medium identifier for identifying the recording medium upon which the material is recorded, and a metadata generator configured to generate semantic metadata describing an attribute of the material, the semantic metadata associated with a corresponding first material identifier and the recording medium identifier, the semantic metadata including descriptive information about an actual content of the material, and the metadata generator configured to assign the semantic metadata into different categories and to prioritize recording of each of the different categories such that high priority categories are recorded a greater number of times then low priority categories.