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:
Feb. 19, 2002
Filed:
Mar. 31, 1997
Applicant:
Inventor:
Seiichi Nakamura, Inagi, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 7/167 ;
U.S. Cl.
CPC ...
H04N 7/167 ;
Abstract
An MPEG board issues the key data generated by the board to a DVD drive . The DVD drive generates enciphering key data on the basis of the key data, enciphers the provided data read from a DVD on the basis of the key data, and sends it to the MPEG board . The MPEG board deciphers the enciphered provided data using the key data generated by the board.
Nakamura, Seiichi. (2002). Method and an apparatus to control copying from a data providing device to a data receiving device (U.S. Patent No. 6347846). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6347846
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile