KR980007751A - Apparatus and method for parallel processing of MPEG-2 variable-length decoder - Google Patents

Abstract

The present invention relates to an MPEG2 video decoder, and more particularly, to an apparatus and method for parallel processing of a variable length decoder (VLD) of a video decoder.

An apparatus and method for parallel processing a variable length decoder of MPEG-2 according to the present invention determines priority of a bitstream request signal and detects a slice start code in a slice start code in a video bitstream when an input bitstream request signal is input Storing a video bitstream storage and an address at this time if the slice start code is detected and storing the video bitstream if no slice start code is detected; A step of reading and storing a video bit stream of a position address of the corresponding slice, and a step of variable length decoding the stored video bit stream and outputting the resultant video bit stream, size Since parallel processing using a video bitstream buffer memory with high efficiency, is economical.

Description

Apparatus and method for parallel processing of MPEG-2 variable-length decoder

Since this is a trivial issue, I did not include the contents of the text.

FIG. 2 is a block diagram showing a configuration of a parallel processor of a variable-length decoder according to the present invention; FIG.

Figure 3 shows a diagram of a video bitstream buffer and a slice location memory of Figure 2;

FIG. 4 is a flow chart showing a parallel processing method of a variable-length decoder according to the present invention;

Claims (5)

An input storage unit for temporarily storing an input video bit stream; a control unit for controlling input / output of the corresponding bit stream according to a bit stream request signal; and a control unit for, in accordance with a bit stream request signal of the input storage unit, A slice position address storage unit for storing a start address of each slice bit stream stored in the video bit stream storage unit; and a control unit for outputting a bit stream request signal to the control unit, And a VLD unit for performing variable length decoding on each slice bit stream in the slice bit stream storage unit and outputting the resultant data. [2] The apparatus of claim 1, wherein the slice bitstream storage comprises an odd slice bitstream buffer for receiving and storing a head and an odd slice bitstream according to the output of the bitstream request signal to the controller, And an even slice bit stream buffer for receiving and storing the even slice bit stream. The apparatus of claim 1, 2 or 3, wherein the controller has a bit stream request signal of the video bit stream storage unit, a bit stream request signal of the odd slice bit stream buffer, and a bit stream request signal order of the even slice bit stream buffer Length decoder of the MPEG-2 variable-length decoder. The method comprising the steps of: determining a priority order of a bitstream request signal and detecting a slice start code in a video bitstream when an input bitstream request signal is input; and if a slice start code is detected in the video bitstream, Storing the video bit stream if a slice start code is not detected; reading and storing a video bit stream of a position address of the slice when an odd and even slice bit stream request signal is input; And outputting the variable-length decoded stream to the variable-length decoding unit. 5. The parallel processing method of an MPEG2 variable length decoder according to claim 4, wherein the request order of the bit stream request signal is an input bit stream request signal, an odd slice bit stream request signal, and an even slice bit stream request signal.