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. 23, 2010
Filed:
Oct. 21, 2002
Yoshiaki Moriyama, Saitama, JP;
Toshio Suzuki, Saitama, JP;
Kosuke Ajima, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
In an electronic apparatus control system provided with: a plurality of electronic apparatuses connected to a network covering a predetermined area; and a controller for controlling these electronic apparatuses, the controller () is provided with: a generating device for generating a group key peculiar to the network () in order to encrypt the information flowing through the network (); and a wireless unit () for transmitting the generated group key to a plurality of the electronic apparatuses. The electronic apparatus is provided with: a memory device for storing the group key transmitted; an encrypting device for encrypting the information flowing through the network () using the group key; and a decoding device for decoding the encrypted information using the group key. Owing to this construction, it is possible to present a copy protection improved in the maintainability and reduced in the cost, for protecting copyright effectively even in a case that information is flown out of the network ().