The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2004
Filed:
Jun. 08, 1999
Johan Cornelis Talstra, Eindhoven, NL;
Mark Hollar, Palo Alto, CA (US);
Kordian Kurowski, San Jose, CA (US);
David Collier, Gilroy, CA (US);
William Wrobleski, Sunnyvale, CA (US);
James Holzgrafe, Morgan Hill, CA (US);
Antonius Adrianus Cornelis Maria Kalker, Eindhoven, NL;
Derek Nelson, Lexington, KY (US);
Patrice Capitant, Los Altos, CA (US);
John O. Ryan, Woodside, CA (US);
Macrovision Corporation, Santa Clara, CA (US);
Abstract
Method and apparatus for providing generational copy control of a video signal. A digital video signal contains content information, first supplemental information and second supplemental information. The first supplemental information is represented by a watermark pattern, the second by a control pattern. Copying of the content information is only permitted if a predetermined combination of the first and second supplemental information is present. Pseudo-sync pulses are added to a blanking interval of an analog video signal converted from a digital video signal, the pulses representing the second supplemental information.