| 摘要 |
In a method of and apparatus for interfacing digital and analog consumer electronic devices with digital and analog broadcast signals, the broadcast signals are received by electronic devices (14, 22, 30, 34, 42, 43) which tune the signals and provide them to set back boxes (46, 48, 50, 52, 53). The set back boxes process the signals and provide a plurality of signals to a plurality of electronic devices. Analog devices are provided with composite video signals, luminance video signals, chrominance video signals, and at least one audio signal, while digital devices are provided with a digital video and audio signal. The processing performed by the set back boxes (e.g. 46) includes signal descrambling (78) and decryption for analog and digital signals, error correction for digital signals, and intermediate frequency signal processing (68) for analog signals. In addition to interfacing digital signals, including high definition television (HDTV) signals, with analog electronic devices, the set back box decompresses the digital signal and converts it to an analog signal. A command line provides for communication between the set back box and the plurality of electronic devices. <IMAGE> |
