Patent ID: 7184552

Claim:
An information reproducing apparatus comprising: a reproducing section operable to reproduce multiplexed data in which first information which is and a plurality of channels of second information which is compressed and encrypted are multiplexed, the second information being reproduced in synchronization with the first information; a decryption section operable to decrypt the reproduced data from the reproducing section; a first decoder operable to decompress the decrypted data from the decryption section; an analyzer operable to analyze the decrypted data from the decryption section to detect the first information; a conversion section operable to alter at least a part of the first information contained in the decrypted data from the decryption section based on an analysis result by the analyzer; and second to n-th (n is a natural number, n>1) decoders operable to receive the altered data from the conversion section and decompress the respective channels of second information.