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:
Oct. 13, 1998
Filed:
Oct. 18, 1996
Tadashi Ezaki, Tokyo, JP;
Koichiro Watanabe, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
Information for imposing copy generation restrictions is superimposed in the format of an XDS signal that is according to the standard of a closed caption broadcast so as to permit performance of copy generation restriction in response to such information without the need to change the structure of a TV receiver. Copy Generation Restriction Management System (CGMS) information is inserted in the format of the XDS signal defined in association with the closed caption signal superimposed on an analog TV signal at the 21-st line in a vertical blanking interval. The XDS signal is composed of a clock run-in interval, a start bit code, and a 16-bit digital signal which is divided into two bytes respectively representing first and second characters. The XDS signal and the CGMS information can be recognized from the start bit code and the first and/or second character. A recording apparatus recognizes the CGMS information on the 21-st line of a second or even-numbered field so as to perform the corresponding copy generation restriction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile