Processing copy protection signals

A method of reading an information signal comprising the steps of:

• detecting the presence of a legality message being interpreted from a first copy protection information and at least second copy protection information, said second copy protection information having been added by recording means,
• determining the legality of the information signal according to the legality message, said legality message being ignored after the determining for a predetermined time interval greater than zero seconds during reading that is independent of the detecting and determining steps before the legality of the information signal is determined, wherein the legality message is interpreted from a combination of second and third copy protection information, said second and third copy protection information having been added by recording means and wherein the first copy protection information is a first watermark and wherein the second copy information is either an encrypted information signal or an unencrypted information signal, the encryption of said information signal being performed using a first encryption process having a first predefined level of security and wherein the third copy information is a second watermark.

An arrangement stored on a machine readable medium for recording an information signal with first copy protection information to a storage medium using recording means, said recording being performed according to first copy rules identified by said first copy protection information, said arrangement comprising:

• means for detecting said first copy protection information identifying said first copy rules,
• means for recording at least second copy protection information according to said detected first copy rules, said first and at least second copy protection information identifying a legality message to be interpreted by reading means, the at least second copy protection information not changing in the recording until a predefined time interval greater than zero seconds after the change in said detected and recorded first copy rules according to an interpreting rule.

An arrangement stored on a machine readable medium for reading an information signal comprising:

• means for detecting the presence of a legality message being interpreted from a first copy protection information and at least second copy protection information, said second copy protection information having been added by recording means,
• means for determining the legality of the information signal according to the legality message, said legality message being ignored after the determining for a predetermined time interval greater than zero seconds during reading that is independent of the means for detecting and the means for determining before the legality of the information signal is determined, wherein the legality message is interpreted from a combination of second and third copy protection information, said second and third copy protection information having been added by recording means and wherein the first copy protection information is a first watermark and wherein the second copy information is either an encrypted information signal or an unencrypted information signal, the encryption of said information signal being performed using a first encryption process having a first predefined level of security and wherein the third copy information is a second watermark.