Data I / O device of MPEG2 (MPEG2) transport decoder

摘要

The present invention relates to a data input / output device of an MPEG2 transport decoder for storing packet data in a transport memory during transport decoding, and for outputting packet decoded data to a video / audio decoder.;In view of the fact that there is a concern that overflow of an input buffer or a video / audio buffer may occur and that the efficiency of a transport memory is deteriorated due to the use of a fixed memory map, It prevents the input buffer from overflowing because it is stored in the transport memory through the input buffer and outputs video and audio compression data from the transport memory when data is stuck to the video and audio buffer due to the decoding delay of the video / audio decoder Thereby preventing overflow of the video and audio buffers and selecting and inputting only data required for decoding, thereby enabling efficient use of the transport memory and efficiency of writing and reading of the transport memory,By applying a dynamic memory allocation function it will allow a more efficient use of memory transport.