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:
Jun. 26, 2007
Filed:
Apr. 25, 2001
Tadashi Ezaki, Tokyo, JP;
Tadashi Ezaki, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Additional information is transmitted by means of assigning a code to a particular scanning line in a VBI (vertical blanking interval). An initial value of a CRCC (Cyclic Redundancy Check Code) or a formula used to generate a CRCC is switched depending upon the type of additional information inserted in a data frame so that a difference in the initial value causes additional information other than CGMS-A (Copy Generation Management System-Analog) to be regarded as invalid, and thus the additional information does not cause an erroneous operation. However, CGMS-A has to be transmitted in the same manner in any country. To meet this requirement, the same initial value is used when CGMS-A is transmitted. This makes it possible to transmit data in a peculiar format without causing a problem regardless of a country in which transmission is performed. Besides, it is possible to transmit CGMS-A in the same manner regardless of the country.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile