Optical disc player system and method of controlling a decoding unit in the optical disc player system to read encoded bitstream data from a buffer memory

An optical disc player system, comprising:

• a buffer memory for storing encoded bitstream data, the encoded bitstream data being divided into a plurality of sectors, each of which includes a data portion, and a header portion for indicating a bitstream type of the data portion;
• a header scanning controller connected to said buffer memory;
• a decoding unit connected to said header scanning controller, said decoding unit including a set of different decoders, each of which is used to decode data with a specific bitstream type, each of said decoders being capable of sending a bitstream request for reading encoded bitstream data stored in said buffer memory to said header scanning controller;
• and
• a reading pointer recorder connected to said header scanning controller and storing a plurality of reading pointers associated with said decoders;
• said header scanning controller reading one of the sectors stored in said buffer memory according to the reading pointer from said reading pointer recorder that is associated with one of said decoders that sent out the bitstream request when said header scanning controller receives the bitstream request from said one of said decoders;
• said header scanning controller transferring the data portion of said one of the sectors that is being read from said buffer memory to said one of the decoders that sent out the bitstream request when the header portion of said one of the sectors that is being read from said buffer memory indicates a bitstream type corresponding to that of the bitstream request, and enabling said reading pointer recorder to adjust the reading pointer to point to a next one of the sectors stored in said buffer memory after reading of said one of the sectors has been completed.