MIT Department of Electrical Engineering & Computer Science

E E C S

A Status Report on Reading Appliances

David Chaiken
Digital SRC

Thursday, December 7, 1995
1:45 PM (1:30 refreshments)
Edgerton Hall, Room 34-101

Abstract

Thursday, December 7, 1995
Computer Architecture Group Seminar
Laboratry for Computer Science, NE43-6th floor playroom, 1:45 PM
(1:30 refreshments)
David Chaiken, Digital SRC
A Status Report on Reading Appliances

Abstract:

Within the next five to ten years, consumers will be able to buy portable reading appliances from stores like Circuit City. These virtual books will cost at most $499 and will have interfaces tuned both for browsing on-line media and for sustained reading. For the next five years, the cost of reading devices will be driven primarily by the cost of high-resolution liquid crystal displays (LCDs). Portable displays with resolution suitable for sustained reading will first appear in high-end laptops in the two year time-frame, triggering a race to the consumer appliance.

In anticipation of the availability of high-resolution screens, the virtual book project at SRC has built a prototype reading appliance called Lectrice. This virtual book has a 10.4 inch, XGA (1024 X 768 pixel), 122 dots per inch (dpi), color LCD. Initial experience with the device has led to a number of conclusions about the architecture and the interface for reading appliances. Specifically, current laptop displays --- with resolutions less than 100 dpi --- do not have adequate resolution for sustained reading, but the Lectrice screen is above threshold. Given appropriate resolution, the reading interface still needs careful tuning. Neither a keyboard nor a stylus suffices for input, and current displays are too cluttered to be good for sustained reading. Lectrice includes buttons for common actions (such as turning pages), as well as display software with minimal ornamentation to reduce distractions while reading. Finally, the previous generation of low-power processors is adequate for a prototype device, but true reading appliances will require processors that are just making their way into the marketplace.

This talk describes the virtual book project and discusses how the project fits into the high-level themes and organization of research at Digital. The presentation concludes with a hands-on demonstration of Lectrices.

Joint work with Mark Hayter, Jay Kistler, and Dave Redell.

Host: Stephen A. Ward


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