Patent ID: 7925137

Claim:
A play while record system comprising: an optical drive; a second device; a read module configured to incrementally read from the optical drive a first stream comprising a sequence of incremental blocks of time-based media data encoded in a first storage format; a record module configured to record on the second device the first stream, and wherein recording comprises, for each of said sequence of incremental blocks of time-based media data: i) encoding the current incremental block into a second storage format as the first stream is received at a rate that is faster than the normal playback rate of the time-based media data and ii) encrypting the encoded current incremental block; and iii) storing the encrypted, encoded current incremental block to the second device; and a play module configured to play a second stream comprising a sequence of individually-encrypted, encoded incremental blocks of time-based media data from the second device, the second stream corresponding to the first stream, wherein playing comprises decrypting and decoding each of the sequence of individually-encrypted, encoded incremental blocks of time-based media data, and wherein the play module begins playback of the second stream while the record module records the first stream.