METADATA COLLECTING DEVICE

A metadata collecting device efficiently acquires metadata from one or more metadata providing devices that hold contents and metadata of the contents distributed from one or more content distribution services, and accumulates the acquired metadata. The metadata collecting device includes a cache system determining unit that determines for each service an accumulation system that accumulates the metadata, a service/metadata information accumulating unit that stores for each accumulation system accumulation system information which includes at least a start condition to start acquiring the metadata, a search condition to select the metadata to be acquired, and a finish condition to finish acquiring the metadata, and a metadata acquiring/update requesting unit that acquires the metadata according to the accumulation system information.