首页>
外国专利>
ADAPTIVE DECODING SYSTEM FOR PROCESSING ENCRYPTED AND NON-ENCRYPTED BROADCAST, CABLE OR SATELLITE VIDEO DATA
ADAPTIVE DECODING SYSTEM FOR PROCESSING ENCRYPTED AND NON-ENCRYPTED BROADCAST, CABLE OR SATELLITE VIDEO DATA
展开▼
机译:用于处理加密的和非加密的广播,电缆或卫星视频数据的自适应解码系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
AN ADAPTIVE DECODER (30) GENERATES A PROGRAM REPRESENTATIVE DATASTREAM, IN SELECTABLE, ENCRYPTED OR DECRYPTED FORM. A METHOD FOR ADAPTIVELY PROCESSING INPUT ENCRYPTED PROGRAM DATA WITH AN ASSOCIATED ENCRYPTION CODE PROVIDES EITHER AN ENCRYPTED OR A DECRYPTED PROGRAM OUTPUT. IN AN ENCRYPTED MODE, ENCRYPTED PROGRAM DATA AND AN ASSOCIATED ENCRYPTION CODE IS EXPORTED TO AN OUTPUT PORT. IN A DECRYPTED MODE, INPUT ENCRYPTED PROGRAM DATA IS DECRYPTED USING AN ENCRYPTION KEY DERIVED FROM THE ENCRYPTION CODE TO PROVIDE DECRYPTED PROGRAM DATA. THE DECRYPTED PROGRAM DATA IS EXPORTED TO THE OUTPUT PORT. NON-ENCRYPTED PROGRAM DATA IS EXPORTED TO AN OUTPUT PORT IN A SELECTABLE NON-ENCRYPTED MODE. FIGURE 1
展开▼