Reduced-energy decoding of MPEG streams

Melena Mesarina; Yoshio Turner

doi:10.1117/12.449990

10 December 2001 Reduced-energy decoding of MPEG streams

Melena Mesarina, Yoshio Turner

Proceedings Volume 4673, Multimedia Computing and Networking 2002; (2001) https://doi.org/10.1117/12.449990
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

Long battery life and high performance multimedia decoding are competing design goals for portable appliances. For a target level of QoS, the achievable battery life can be increased by dynamically adjusting the supply voltage throughout execution. In this paper, an efficient offline scheduling algorithm is proposed for preprocessing stored MPEG audio and video streams. It computes the order and voltage settings at which the appliance's CPU decodes the frames, reducing energy consumption without violating timing or buffering constraints. Our experimental results elucidate the tradeoff of QoS and energy consumption. They demonstrate that the scheduler reduces CPU energy consumption by 19%, without any sacrifice of quality, and by nearly 50%, with only slightly reduced quality. The results also explore how the QoS/energy tradeoff is affected by buffering and processor speed.

Citation Download Citation

Melena Mesarina and Yoshio Turner "Reduced-energy decoding of MPEG streams", Proc. SPIE 4673, Multimedia Computing and Networking 2002, (10 December 2001); https://doi.org/10.1117/12.449990

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available