Method and system for subscription television billing and access
Method and system for remote reporting, particularly for pay television billing
CATV Communication system Patent #: 4533948
ApplicationNo. 06/543588 filed on 10/19/1983
US Classes:340/5.74, Access to electrical information340/10.1, Interrogation response340/5.54, Password380/240, Including addressed decoder control signal380/243, FACSIMILE CRYPTOGRAPHY725/137Teletext
ExaminersPrimary: Yusko, Donald J.
International ClassH04N 7/03 (20060101)
AbstractThe present invention permits a teletext system operator to adjust subscriber access to service levels individually by adjusting a code at the head end station. A head-end station transmits a tier description page and a tier authorization page. The tier description page divides the data base into a group of tiers each comprising a defined range of pages. The authorization page lists authorization codes for all subscribers, one code per subscriber. Each subscriber station includes a permanent location code. When access is requested by the subscriber, the subscriber station uses the location code to acquire the authorization code transmitted by the head-end station. The authorization code indicates which tiers the subscriber station may decode. To change the service, the system operator may change the authorization codes at the head-end station or change the range definitions for the service level tiers.