Low-Power Video Decoding on Variable Voltage Processor for Mobile Multimedia Applications

다국어 초록 (Multilingual Abstract)

This paper proposes a novel low-power video decoding scheme. In the encoded video bitstream, there is quite a large number of non-coded blocks. When the number of the non-coded blocks in a frame is known at the start of frame decoding, the workload of the video decoding can be estimated. Consequently, the supply voltage of very large-scale integration (VLSI) circuits can be lowered, and the power consumption can be reduced. In the proposed scheme, the encoder counts the number of non-coded blocks and stores this information in the frame header of the bitstream. Simulation results show that the proposed scheme reduces the power consumption to about 1/10 to 1/20.

참고문헌 (Reference)

1 "and K. Kim Hardware-Software Implementation of MPEG-4Video Codec" 25 (25): 489-502, 2003

2 "Run-Time Voltage Hopping for Low-Power Real-Time Systems" 806-809, 2000

3 "PowerAware Video Decoding" 303-306, 2001

4 "Power-Aware Video DecodingUsing Real-Time Event Handlers" 72-29, 2002

5 "Pipelined Macroblock Processing to Reduce InternalBuffer Size of Motion Estimation in Multimedia SoCs" 25 (25): 297-304, oct.2003

6 "Low-Power Silicon Architectures for WirelessCommunication" 379-380, 2000

7 "Low-Energy Intra-Task VoltageScheduling Using Static Timing Analysis" 438-443, 2001

8 "Low Power Digital CMOSDesign" Kluwer Academic Publishers 1995.

9 "Frame-BasedDynamic Voltage and Frequency Scaling for a MPEG Decoder" 732-737, 2002

10 "Energy-Optimization for Latency-and Quality-Constrained Video Applications" 33 (33): 358-366, oct.2004

11 "Energy-Constrained VDD/VTHHopping Scheme with Run-Time Power Estimation for Low-Power Real-Time VLSI Systems" 11 (11): 601-620, Dec.2002

12 "Coding of AudiovisualObject" 1998.

13 "Alpha-Power Law MOSFET Modeland Its Application to CMOS Inverter Delay and OtherFormulas" 25 (25): 584-594, feb.1990

14 "Advanced Video Coding" 2002.