Digital broadcast video receiving circuit e.g. digital television, has scrambler encoding data packet to provide re-encoded digital data packet, and storage device storing received broadcast contents in encoded form

摘要

#CMT# #/CMT# The circuit has descramblers (122, 124, 126, 128) that decode an encoded digital broadcast video signal. The descramblers decode the signal based on respective encoding formats and descramble broadcast contents. A scrambler (129) is coupled to the descramblers for encoding the data packet to provide a re-encoded digital data packet. A storage device (180) stores received broadcast contents in an encoded form. #CMT# : #/CMT# Independent claims are also included for the following: (A) an apparatus providing conditional access and copy protection comprising a decoder (B) a method for receiving digital broadcast video (C) a computer program product for receiving digital broadcast video. #CMT#USE : #/CMT# Digital broadcast video receiving circuit e.g. a digital television, a set-top box, and a digital personal video recorder. #CMT#ADVANTAGE : #/CMT# The storage device stores received broadcast contents in an encoded form, thus protecting against an unauthorized copying of the digital broadcast contents. The circuit enables for receiving and decoding all broadcast data transmitted from a broadcast station, irrespective of various digital television transmission standards. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram illustrating a digital broadcast video receiving circuit. 111 : Input buffer 122, 124, 126, 128 : Descramblers 129 : Scrambler 130 : Index generation circuit 180 : Storage device.