A system for processing video signals via a serial-connected high-speed signal processing smart card (System for processing video signals via series-connected high-speed signal processing smart cards)

摘要

The system processes a video signal comprising a plurality of signal components representing each one of a plurality of video programs, such as several pay television programs. For example, each signal component descrambling the Euro TV program is processed by one of a number of serially connected high speed signal processing integrated circuit (IC) cards, or " smart " cards. The output signal from the last connected smart card includes a plurality of processed signal components. The plurality of processed signal components may be adapted to produce a signal suitable for producing a displayed image comprising multiple image portions such as picture-in-picture (PIP) or pop (pictur-out-pictur) Lt; / RTI Each part of the image is made in response to one of the processed signal components.