Contents protection system using smart card interface for digital CATV network based on the OpenCable specification

摘要

We propose the merging of the OpenCable reference model with the smart card interface defined by ISO/IEC 7816-3 and have implemented a new conditional access system (CAS) using this interface along with a Personal Computer Memory Card International Association (PCMCIA) interface. In addition, we have also designed the hardware architecture of the point-of-deployment (POD) security module, designed using the Verilog HDL, using the above two interfaces. The designed POD security module has an embedded 32-bit reduced instruction set computing (RISC) microprocessor that manages applications, such as an MPEG-2 filter, descrambler, and data encryption standard (DES).