A method for recording data on an optical medium and the associated
optical medium (e.g. DVD), player, and playback method. The recording
method includes receiving main data from a data source, determining a
plurality of data frame values in response to the main data, inverting at
least one selected bit in at least one of the data frame values compared
to the standard DVD format to generate a plurality of encoded data
frames, scrambling the encoded data frames by a feedback shift register
to generate scrambled data frames, generating ECC values in response to
the scrambled data frames, adding the ECC values to the scrambled data
frames to generate an ECC block, rearranging the ECC block to generate a
plurality of recording frames, encoding the recording frames by an
eight-to-sixteen modulation (ESM) encoder to generate code words, adding
sync values to the code words to generate a plurality of physical
sectors, and recording the physical sectors on the optical medium. There
is a complementary method for reading and decoding data from the optical
medium. These complementary encoding and decoding schemes provide a
method for creating and reading proprietary format DVDs which may not be
read or copied by conventional DVD players.