Power Management

Vol. 5 No. 7 – November/December 2007

Power Management


Powering Down

Power management - from laptops to rooms full of servers - is a topic of interest to everyone. In the beginning there was the desktop computer. It ran at a fixed speed and consumed less power than the monitor it was plugged into. Where computers were portable, their sheer size and weight meant that you were more likely to be limited by physical strength than battery life. It was not a great time for power management.

by Matthew Garrett

Document & Media Exploitation

A computer used by Al Qaeda ends up in the hands of a Wall Street Journal reporter. A laptop from Iran is discovered that contains details of that country's nuclear weapons program. Photographs and videos are downloaded from terrorist Web sites.

by Simson L. Garfinkel

Understanding DRM

The explosive growth of the Internet and digital media has created both tremendous opportunities and new threats for content creators. Advances in digital technology offer new ways of marketing, disseminating, interacting with, and monetizing creative works, giving rise to expanding markets that did not exist just a few years ago. At the same time, however, the technologies have created major challenges for copyright holders seeking to control the distribution of their works and protect against piracy.

by David Sohn

Big Games, Small Screens

One thing that becomes immediately apparent when creating and distributing mobile 3D games is that there are fundamental differences between the cellphone market and the more traditional games markets, such as consoles and handheld gaming devices. The most striking of these are the number of delivery platforms; the severe constraints of the devices, including small screens whose orientation can be changed; limited input controls; the need to deal with other tasks; the nonphysical delivery mechanism; and the variations in handset performance and input capability.

by Mark Callow, Paul Beardow, David Brittain


A Conversation with Mary Lou Jepsen

From Tunisia to Taiwan, Mary Lou Jepsen has circled the globe in her role as CTO of the OLPC (One Laptop Per Child) project. Founded by MIT Media Lab co-founder Nicholas Negroponte in 2005, OLPC builds inexpensive laptops designed for educating children in developing nations. Marvels of engineering, the machines have been designed to withstand some of the harshest climates and most power-starved regions on the planet.


Use It or Lose It

My 'aphorisme du jour' allows me to roam widely in many directions, some of which, I hope, will be timely and instructive for Queue readers.

by Stan Kelly-Bootle

Kode Vicious

Take a Freaking Measurement!

Have you ever worked with someone who is a complete jerk about measuring everything?

by George V. Neville-Neil


Things I Learned in School

How many of us have not had the experience of sitting in a classroom wondering idly: "Is this really going to matter out in the real world?" It's curious, and in no small amount humbling, to realize how many of those nuggets of knowledge really do matter. One cropped up recently for me: the Finite State Machine (FSM). As we continue to develop the new UI for our product, we'll definitely be using FSMs wherever possible.

by Terry Coatta