3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005.最新文献_第2页

Design of multimillion-gate multimedia SoCs: where do we stand? 百万栅极多媒体soc的设计:进展如何?

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518056

S. Dutta

引用次数: 0

Combining data and instruction memory energy optimizations for embedded applications 结合数据和指令存储器能量优化嵌入式应用

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518088

T. Aa, F. Catthoor, H. Corporaal, Geert Deconinck

引用次数: 6

A NUCA model for embedded systems cache design 嵌入式系统缓存设计的NUCA模型

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518068

P. Foglia, Daniele Mangano, C. Prete

引用次数: 20

Frame buffer compression using a limited-size code book for low-power display systems 在低功耗显示系统中使用有限大小的代码本进行帧缓冲压缩

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518059

Hojun Shim, Youngjin Cho, N. Chang

引用次数: 11

A perception-aware low-power software audio decoder for portable devices 用于便携式设备的感知低功耗软件音频解码器

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518060

S. Chakraborty, Ye Wang, Wendong Huang

{"title":"A perception-aware low-power software audio decoder for portable devices","authors":"S. Chakraborty, Ye Wang, Wendong Huang","doi":"10.1109/ESTMED.2005.1518060","DOIUrl":"https://doi.org/10.1109/ESTMED.2005.1518060","url":null,"abstract":"We propose a new software audio decoder for processors supporting multiple discrete voltage-frequency operating points. The proposed decoding scheme allows the user to switch between multiple output quality levels, where each level is associated with a different rate at which the processor consumes energy. This is an attractive feature in battery-powered portable audio players and mobile phones, where battery-life is often more crucial than the output quality, especially in noisy environments. Towards this, the frequency range of the decoder is partitioned into multiple groups, in accordance with their perceptual relevance. When a longer battery life is desired, only the most relevant frequency components are decoded, which allows the processor to be run at a lower voltage and frequency. We have implemented this scheme using the MP3 decoder and obtained up to 95% savings in the energy consumed by the processor for AM quality output (in contrast to CD quality output, which is associated with the maximum energy consumption). This scheme is easy to implement, has no runtime overhead and does not involve any runtime voltage or frequency scaling.","PeriodicalId":119898,"journal":{"name":"3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130538533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Custom processor design using NISC: a case-study on DCT algorithm 基于NISC的自定义处理器设计:以DCT算法为例

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518072

B. Gorjiara, D. Gajski

引用次数: 20

Addressing computational and networking constraints to enable video streaming from wireless appliances 解决计算和网络限制，使视频流从无线设备

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518064

Saumya Chandra, S. Dey

{"title":"Addressing computational and networking constraints to enable video streaming from wireless appliances","authors":"Saumya Chandra, S. Dey","doi":"10.1109/ESTMED.2005.1518064","DOIUrl":"https://doi.org/10.1109/ESTMED.2005.1518064","url":null,"abstract":"Enabling real-time video streaming from a wireless appliance requires compute intensive video compression to be performed in real-time on the appliance before transmitting the data upstream. However, the tasks of real-time video encoding and streaming from the wireless appliances are challenging due to a) limited computational and battery resources, and b) limited and time-varying network bandwidth availability. In this paper, we present a technique for enabling real-time video compression and transmission from wireless appliances based on run-time video adaptation. We present an adaptation engine for dynamic selection of video compression parameters such that both the computational and the network bandwidth constraints are satisfied, while maximizing the end user's viewing quality. The algorithm is based on the analysis of the effect of different video compression parameters on computational and network resource usage, and the video quality. Since our approach is based on judicious selection of video compression parameters and does not require changes to the compression algorithm itself, it is applicable to a wide range of video compression standards. We have also developed an iPAQ-based end-to-end video streaming system to evaluate our approach. Experiments conducted on this test-bed indicate that our proposed technique achieves significant improvements in overall video quality under computation (up to 4/spl times/) and network bandwidth (/spl sim/3dB) constraints. We also show significant improvements in the energy efficiency as a result of adaptation.","PeriodicalId":119898,"journal":{"name":"3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122744500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Workload characterization and cost-quality tradeoffs in MPEG-4 decoding on resource-constrained devices 资源受限设备上MPEG-4解码的工作负载表征和成本-质量权衡

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518091

Yanhong Liu, S. Chakraborty, Wei Tsang Ooi, A. Gupta, Subramanian Mohan

{"title":"Workload characterization and cost-quality tradeoffs in MPEG-4 decoding on resource-constrained devices","authors":"Yanhong Liu, S. Chakraborty, Wei Tsang Ooi, A. Gupta, Subramanian Mohan","doi":"10.1109/ESTMED.2005.1518091","DOIUrl":"https://doi.org/10.1109/ESTMED.2005.1518091","url":null,"abstract":"There has been a lot of interest in the embedded systems community on architectures and design methods that are targeted towards multimedia applications. This trend is pri marily motivated by the proliferation of resource and power-constrained portable devices (such as mobile phones and PDAs), a major portion of whose workload is made up of multimedia applications. In this paper, we investigate the tradeoffs between video quality and the processor cycle requirements in such resource-constrained devices, in the particular context of MPEG-4 decoding using an open source codec called XviD. The XviD codec implements a number of powerful coding tools from MPEG-4, which are organized as profiles and levels. Given the specification of an architecture on which an XviD decoder is implemented, the work presented here would guide a multimedia applications developer in selecting appropriate profiles and levels for the corresponding encoder application. While the selection of such profiles has so far been primarily influenced by the network bandwidth in the case of video streaming, our work stresses the importance of additionally taking into account the architecture of the device running the decoder application. Although the relevance of this observation is increasingly being realized, sufficient work has not yet been done to provide guidelines on how to systematically make such selections. This work attempts to address this shortcoming.","PeriodicalId":119898,"journal":{"name":"3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005.","volume":"266 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115208080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Data-access optimization of embedded systems through selective inlining transformation 通过选择性内联转换的嵌入式系统数据访问优化

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518077

J. Absar, P. Marchal, F. Catthoor

引用次数: 6

Customizing 16-bit floating point instructions on a NIOS II processor for FPGA image and media processing 在NIOS II处理器上定制用于FPGA图像和媒体处理的16位浮点指令

3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005. Pub Date : 2005-09-22 DOI: 10.1109/ESTMED.2005.1518073

D. Etiemble, S. Bouaziz, L. Lacassagne

引用次数: 20