Title :
A single-chip MPEG/audio decoder LSI based on a compact decoding algorithm
Author :
Iwadare, Masahiro ; Takano, Hideto ; Shibuya, Yoshitaka ; Sakamoto, Hideki ; Kuwajima, Takeshi ; Kitabatake, O. ; Kobayashi, Naoko
Author_Institution :
Inf. Technol. Res. Labs., NEC Corp., Kawasaki, Japan
Abstract :
A single-chip decoder LSI is developed for audio bit-stream specified by ISO/IEC MPEG (the International Organisation for Standardisation/the International Electrotechnical Commission Moving Pictures Expert Group). The applicable layers are Layer I and II of MPEG-1 and MPEG-2/lower-sampling-frequency mode. To reduce on-chip memory for audio signal synthesis the LSI employs a fast calculation algorithm that was developed when the decoder was realized by signal processors. The reliability in bitstream synchronization is improved by checking bitstream inconsistency. Bitstream error concealment by repeating previous audio data is supported. The decoding delay is adjustable when connected with an optional external memory
Keywords :
application specific integrated circuits; audio signals; decoding; large scale integration; multimedia communication; synchronisation; video signal processing; ISO/IEC MPEG; LSI; Layer I; Layer II; MPEG-1; MPEG-2/lower-sampling-frequency mode; audio bit-stream; audio signal synthesis; bitstream error concealment; bitstream inconsistency; bitstream synchronization; compact decoding algorithm; decoding delay; optional external memory; single-chip MPEG/audio decoder; Bit rate; Decoding; Frequency synchronization; IEC standards; ISO standards; Large scale integration; MPEG standards; National electric code; Signal processing algorithms; Transform coding;
Conference_Titel :
VLSI Signal Processing, VIII, 1995. IEEE Signal Processing Society [Workshop on]
Conference_Location :
Sakai
Print_ISBN :
0-7803-2612-1
DOI :
10.1109/VLSISP.1995.527483
