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:
Dec. 29, 2009
Filed:
Mar. 02, 2006
Tatsushi Koguchi, Saitama-ken, JP;
Norihiro Usuda, Ibaraki-ken, JP;
Kazuhiro Hakuno, Ibaraki-ken, JP;
Tatsushi Koguchi, Saitama-ken, JP;
Norihiro Usuda, Ibaraki-ken, JP;
Kazuhiro Hakuno, Ibaraki-ken, JP;
Victor Company of Japan, Limited, Yokohama, JP;
Abstract
An authentication/decryption unit authenticates and decrypts video signals received from a video signal output device. An open-condition detector detects the open condition of a cabinet. A memory stores therein one of a first flag indicating that an authentication operation of the authentication/decryption unit is enabled and a second flag indicating that an authentication operation of the authentication/decryption unit is disabled. A micro-controller controls whether the authentication operation of the authentication/decryption unit will be enabled or disabled according to the flag in the memory. When the open-condition detector detects that the cabinet is opened, the micro-controller writes the second flag into the memory.