A digital recording apparatus for recording signals received by means of a digital interface format composed of a category code, specifying a device on the transmission side, digital main data, and digital subdata for control, includes means for judging the category code of the received data. When the...http://www.google.es/patents/US4893199?utm_source=gb-gplus-sharePatente US4893199 - Digital signal recording apparatus with a digital subdata converting capability
Digital signal recording apparatus with a digital subdata converting capability
