Hybrid Addressability -- A Hybrid Combination Of Off-Premises And Set-top Addressable Equipment (1984)

By Graham S. Stubbs, Oak Communications Inc. & John Holobinko, Times Fiber Communications, Inc.

Cable systems in metropolitan areas require addressable technology which satisfies the requirements for secure distribution of pay-TV signals simultaneously to both high-density areas and to individual residences. To date these differing needs have been filled separately by off-premises equipment (for high-density areas) and addressable home terminals (for individual residences).

This paper describes the system considerations for a hybrid addressable system optimized for both environments. Several alternative hybrid system arrangements are described, and based on discussion of their relative merits, a specific hybrid system is proposed. The proposed system merges the best operational and security features of both home-terminal and off-premises systems.

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