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:
Jan. 29, 2002
Filed:
Jul. 10, 1998
Takehisa Kato, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A device to be used with digital data copying apparatus for preventing fraudulent copies of a digital data is disclosed. The digital data includes an encrypted data main body and encrypted copy management information for controlling permission with regard to copying the data main body. A determining section determines if permission be granted for copying the digital data or not depending on if the copy management information satisfies predetermined requirements or not. A prohibition processing section prohibits any operation of effectively copying the digital data when the determining section determines that permission should not be granted for copying the digital data.