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:
May. 25, 1993
Filed:
Mar. 20, 1991
Tsuneo Furuya, Kanagawa, JP;
Fujiyuki Fukamatsu, Kanagawa, JP;
Yasuaki Yamagishi, Kanagawa, JP;
Yoshimoto Muratsubaki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A system for transmitting a scramble signal for a sky port scramble system including an organization center for organizing data relating to customers etc. and first and second control units each having a system controller and a scrambler for performing the scramble processing on the basis of the customer data sent from the organization center. In a normal state, the organization center communicates with one of the first and second control units and each of the first and second control units is operated in the same manner. In case of the occurrence of an abnormality or a fault in the communication control unit, only the other control unit is operated and the organization center communicates with the other control unit instead.