Buffering control method, and buffering control device

A buffering control device for buffering main data which was reproduced from an optical disc comprising:

• a receiving part which receives main data and sub data which were reproduced from an optical disc with word clocks as references, which word clocks are partitioning timings with taking a plurality of bits of said main data as a unit;
• a synchronizing part which generates a synchronous signal on the basis of said sub data;
• and
• a buffering control part which starts buffering of said main data in synchronization with the synchronous signal and writing the buffered data into another device which is a device having a recording medium to which the dubbing is performed in the state of the digital signal as it is.

A data transfer device which performs transfer of audio data utilizing the polarity clock indicating the polarity of the audio data for each channel, the transfer clock for transferring the audio data, and a plurality of audio data lines which are synchronized with the transfer clock, comprising:

• a transfer clock generator part which generates the transfer clock of the number which corresponds to the number of the plural data lines which is less than the bit width per a sample for each sample of said audio data;
• a polarity clock generator part which generates said polarity clock which is synchronized with said transfer clock;
• a data conversion part which distributes said audio data per a sample to said plural number of data lines of the line number less than the bit width per a sample as well as synchronizes the distributed audio data with the polarity clock so as to output the same with synchronized with the transfer clock with a bit unit;
• and
• a data receiving unit which receives the audio data which was distributed to the plural data lines of the line number that is less than the bit width per a sample, said transfer clock, and said polarity clock, and restores the audio data which are distributed to the plural data lines to output the audio data with synchronized with the transfer clock and the polarity clock.

A data transfer device which performs transfer of audio data utilizing the polarity clock indicating the polarity of the audio data for each channel, the transfer clock for transferring the audio data, and a plurality of audio data lines which are synchronized with the transfer clock, comprising:

• a data receiving unit which receives the audio data which was distributed to the plural data lines of the line number that is less than the bit width that is obtained by adding an addition information to the bit width per a sample of said audio data, said transfer clock, and said polarity clock, and restores the audio data which are distributed to the plural data lines and the addition information to output the audio data and the addition information;
• a synchronizing part which generates a synchronous signal on the basis of said addition information;
• and
• a buffering control part which starts buffering of said audio data on the basis of said synchronous signal.

A data transfer device which performs transfer of audio data utilizing the polarity clock indicating the polarity of the audio data for each channel, the transfer clock for transferring the audio data, and a plurality of audio data lines which are synchronized with the transfer clock, comprising:

• a transfer clock generator part which generates the transfer clocks of the number which corresponds to the number of the plural data lines which is less than the bit width which is obtained by adding an addition information to the bit width per a sample, for each sample of said audio data;
• a polarity clock generator part which generates said polarity clock which is synchronized with said transfer clock;
• a data conversion part which distributes said audio data per a sample and its addition information to said plural number of data lines of the line number less than the bit width per a sample as well as synchronizes the distributed audio data and said addition information with said polarity clock so as to output same with synchronized with the transfer clock with a bit unit;
• a data receiving unit which receives the audio data which was distributed to the plural data lines of the line number that is less than the bit width that is obtained by adding an addition information to the bit width per a sample of said audio data, said transfer clock, and said polarity clock, and restores the audio data which are distributed to the plural data lines and the addition information to output the audio data and the addition information;
• a synchronizing part which generates a synchronous signal on the basis of said addition information;
• and
• a buffering control part which starts buffering of said audio data on the basis of the synchronous signal.