NDLI: A Data-Driven IDCT Architecture for Low Power Video Applications

Content Provider	IEEE Xplore Digital Library
Author	Xanthopoulos, Thucydides Chandrakasan, Anantha P. Sodini, Charles G. Dally, William J.
Copyright Year	1996
Description	Author affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (Xanthopoulos, Thucydides; Chandrakasan, Anantha P.; Sodini, Charles G.; Dally, William J.)
Abstract	Analysis of transform coded (MPEG) video data streams reveals a large percentage of zero-valued Discrete Cosine Transform (DCT) coefficients. A Data-Driven 2D IDCT architecture (DDIDCT) is proposed which exploits this observation for energy efficiency. The DDIDCT architecture exploits variability in the computational workload caused by the presence of zero-valued DCT coefficients by adaptively changing the power supply and the clock frequency of the main computation units. Adaptive minimization of switching events and power supply voltage make the DDIDCT approach more energy efficient than a conventional fast row-column Distributed Arithmetic IDCT implementation by more than an order of magnitude for the same sample rate.
Starting Page	196
Ending Page	199
File Size	607587
Page Count	4
File Format	PDF
ISBN	2863321978
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-09-17
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	Editions Frontiers
Subject Keyword	Computer architecture Discrete cosine transforms Energy efficiency Power supplies Discrete transforms Streaming media Clocks Frequency Voltage Arithmetic
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in