Semiconductor device for compressing video signals with copy protection information

A semiconductor device for compressing picture signal, comprising:

• an input portion for receiving a picture signal;
• a copy protection information detecting portion for detecting copy protection information included in the picture signal input from the input portion;
• a compressing portion for compressing the picture signal;
• a compressed data output portion for outputting compressed data obtained by the compressing portion;
• a specification information output portion, coupled to said copy protection information detecting portion and compressing portion, for outputting specification information indicating which part of the compressed data the detected copy protection information takes effect on, as determined from a head position where the copy protection information is first detected, the copy protection information indicating copying is prohibited;
• and
• a data deletion portion, which specifies and deletes, based on the specification information, a part of the compressed data that has been recorded on a storage unit even though copying is prohibited when the copy protection information detecting portion detects more than one time that the copy protection information indicating copying is prohibited.

An apparatus comprising:

• means for receiving a picture signal;
• means for detecting copy protection information included in the received picture signal;
• means for compressing the received picture signal;
• means for outputting the compressed picture signal;
• means for outputting specification information indicating for which part of the compressed picture signal the detected copy protection information takes effect on, as determined from a head position of the part where the copy protection information is first detected, the copy protection information indicating copying is prohibited;
• and
• means for specifying and deleting, based on the specification information, a part of the compressed data that has been recorded on a storage unit even though copying is prohibited when the means for detecting copy protection information detects more than one time that copying is prohibited according to the copy protection information.