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Proceedings Paper

Optical information storage in cellular mobile terminals
Author(s): Jakke S. Makela; Janne K. Aikio; Venkatesh Vadde; Timo T. Kolehmainen; Pentti Karioja
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Paper Abstract

The trend towards so-called digital convergence (multiple functionality within a single terminal) is opening up a need for high-capacity storage within the cellular mobile terminals (CMT). Solid-state memories and magnetic microdrives are the most commercially mature options. Optical disk technology in this size range is immature, but has a unique potential: no other medium at present has the capability to be simultaneously low-cost, high-capacity, and exchangeable. In this paper, we explore the requirements for the implementation of optical disk storage in a CMT environment. From the technical point of view, these requirements include small form factor, high-enough data density and throughput, low power consumption, robustness, low cost, mass productability, and modularity. Although current technologies may satisfy some of these requirements individually, there is a need for combined optimization of all of these parameters. From the commercial point of view, the most crucial requirement is global standardization. Such standardization is crucial if wide interoperability is wanted (between CMT manufacturers, and even more crucially between CMTs and other appliances). Current optical storage standards are industry-driven and tend to be proprietary and/or incompatible. Even if the technical challenges can be met, optical data storage is not likely to be accepted in CMT applications unless global standardization proceeds more quickly than it is doing at present.

Paper Details

Date Published: 8 November 2001
PDF: 10 pages
Proc. SPIE 4534, Optoelectronic and Wireless Data Management, Processing, Storage, and Retrieval, (8 November 2001); doi: 10.1117/12.448015
Show Author Affiliations
Jakke S. Makela, Nokia Mobile Phones (Finland)
Janne K. Aikio, VTT Electronics and Infotech Oulu (Finland)
Venkatesh Vadde, Nokia Research Ctr. (United States)
Timo T. Kolehmainen, Nokia Mobile Phones (Finland)
Pentti Karioja, VTT Electronics and Infotech Oulu (Finland)

Published in SPIE Proceedings Vol. 4534:
Optoelectronic and Wireless Data Management, Processing, Storage, and Retrieval
Robert Raymond; Pradip K. Srimani; Renjeng Su; Carl W. Wilmsen, Editor(s)

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