Digital recording apparatus and copyright protection method thereof

A medium for receiving a copyright protected digital signal wherein in a header of a transmission frame of said digital signal to be transmitted a first copyright information is contained, said first copyright information restricts recording of said digital signal to be inputted to said digital recording apparatus, wherein said first copyright information comprises:

• copy free information for indicating to said digital recording apparatus that said digital signal is copy free;
• and
• information for indicating to said digital recording apparatus to perform copy management in compliance with a second copyright information included in the content of said transmitted transmission frame, wherein the digital recording apparatus is interfaced based upon an IEEE 1394 format.

A digital recording apparatus provided with a digital interface, the digital recording apparatus recording a digital signal inputted through said digital interface, the digital signal including a first copyright information, wherein said digital recording apparatus comprises:

• means for detecting a second copyright information provided in a transmission header of a transmission frame of said digital signal inputted through said digital interface;
• and
• means for receiving the transmission frame and for allowing recording processing if said second copyright information indicates copy free of said digital signal, wherein said digital interface is based on an IEEE 1394 format.

A control IC for controlling a link layer of a digital interface mounted on a digital recording apparatus provided with said digital interface, the digital recording apparatus recording a digital signal inputted through said digital interface, the digital signal including a first copyright information, wherein said control IC comprises:

• means for detecting a second copyright information provided in a transmission header of a transmission frame of said digital signal inputted through said digital interface;
• and
• means for receiving the transmission frame and for instructing a controller of said digital recording apparatus to record the digital signal included in said received transmission frame if said first copyright information indicates copy free of said digital signal.

A digital recording apparatus provided with a digital interface, the digital recording apparatus recoding a digital signal inputted through said digital interface, the digital signal including a first copyright information, wherein said digital recording apparatus comprises:

• a detector for detecting a second copyright information provided in a transmission header of a transmission frame of said digital signal inputted through said digital interfaces;
• and
• a receiver for receiving the transmission frame and for allowing recording processing if said second copyright information indicates copy free of said digital signal, wherein said digital interface is based on an IEEE 1394 format.

A control IC for controlling a link layer of a digital interface mounted on a digital recording apparatus provided with said digital interface, the digital recording apparatus recording a digital signal inputted through said digital interface, the digital signal including a first copyright information, wherein said control IC comprises:

• a detector for detecting a second copyright information provided in a transmission header of a transmission frame of said digital signal inputted through said digital interface;
• and
• a receiver for receiving the transmission frame and for instructing a controller of said digital recording apparatus to record the digital signal included in said received transmission frame if said first copyright information indicates copy free of said digital signal.