| http://www.w3.org/ns/prov#value | - That is, two types of additional information different in an adding method is superimposed and added on/to a digital video signal recorded on the recording medium 200. [0093] The reading section 21 of the reading device 20 generates a digital read video signal S12 based upon a signal S11 obtained by reading information on the recording medium 200 and sends it to the recording device 30 via a netwo
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