Magnetic Recording : The First 100 Years

ISBN: 0780347099
Source: IEEE Xplore


Electrical Engineering/History of Technology Magnetic Recording The First 100 Years The first magnetic recording device was demonstrated and patented by the Danish inventor Valdemar Poulsen in 1898. Poulsen made a magnetic recording of his voice on a length of piano wire. Magnetic Recording traces the development of the watershed products and the technical breakthroughs in magnetic recording that took place during the century from Poulsen’s experiment to today’s ubiquitous audio, video, and data recording technologies, including tape recorders, video cassette recorders, and computer hard drives. An international author team brings a unique perspective, drawn from professional experience, to the history of magnetic recording applications. Their key insights shed light on how magnetic recording triumphed over all competing technologies and revolutionized the music, radio, television, and computer industries. They also show how these developments offer opportunities for future applications. Magnetic Recording features 116 illustrations, including 92 photographs of historic magnetic recording machines and their inventors.

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    • "These include a greater potential for and greater benefits from: 1) creating materials to better exploit their physical phenomena; and 2) changes in scale. For the first method, such materials have been found for batteries [34], lighting [35], displays [20], vacuum tubes, ICs [36], and magnetic storage [37] technologies. The realization and exploitation of each physical phenomenon that forms the basis of these technologies required a specific type of material and finding the best material has taken many years. "
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    ABSTRACT: This paper analyzes the timing of a new technology's economic feasibility using a simple yet novel approach. While the conventional wisdom that costs fall as cumulative production increases does not enable us to analyze this timing, the proposed approach enables us to do so using existing technological trends in the components that form a new technology's system. For 3D television, although the concepts that form the basis of 3D television have been known for many years, improvements in specific components within two-dimensional (2D) televisions such as the liquid crystal display (LCD) are finally making 3D television economically feasible. More specifically, improvements in the frame-rates of 2D LCDs are making it economically feasible to introduce time sequential 3D, which requires special glasses. Similarly, increases in the number of pixels per area (resolution) will probably make auto-stereoscopic 3D LCDs economically feasible in the next five to ten years and thus eliminate the need for special glasses.
    Full-text · Article · Feb 2013 · Technology in Society
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    • "Continued improvements in the recording density of magnetic tape and plastics led to a fifth round of changes in the design tradeoffs (See Table 2) and thus to movements back up the product design and to a lesser extent customer choice hierarchies and the emergence of a new product class called portable tape players in the 1960s. The improvements in recording density, which were driven primarily by the computer industry and to a lesser extent by the musical recording studios (Daniel, et al, 1999), enabled the use of thinner and narrower tape. The improvements in the cost and strength of plastics enabled plastics to be used for special runners, hubs, guides, and spools and thus eliminated the need to thread tape as with reel-to reel players. "
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    ABSTRACT: This article uses the music industry to demonstrate a model of technological change that explains the sources and timing of technological discontinuities and dominant designs. The process by which firms translate customer needs into products can be represented in terms of an interaction between customer choice and product design hierarchies. Technological improvements at lower levels in the product design hierarchy can change the design tradeoffs and thus affect movements up and down the hierarchies. Movements up the hierarchies lead to the emergence of new product classes (i.e., technological discontinuity) whereas movements down the hierarchies may result in the emergence of a dominant design in a specific product class.
    Full-text · Article · Feb 2007 · Economics of Innovation and New Technology
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    • "Magnetic storage has played a key role in audio, video and computer development since its invention more than hundred years ago by Valdemar Poulsen [1]. In 1956 IBM built the first magnetic hard disk drive featuring a total storage capacity of 5 MB at a recording density of 2 kbit in −2 . "
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    ABSTRACT: In recent years, the stability of recorded data against thermal decay has become an important criterion for judging the performance of magnetic recording systems. Continued growth of storage densities in the presence of thermally activated behaviour, often called the `superparamagnetic effect', requires new innovations in the recording system in general, and the recording media, in particular. This paper reviews some of the recent advances in recording media (e.g. oriented and antiferromagnetically coupled media) that have helped magnetic recording to maintain the areal density growth rate. However, more innovations and novel architectures are needed for the solutions of tomorrow. Among the more promising media approaches, which are discussed in this paper, are perpendicular, patterned and self-assembled nanoparticle media. Additionally, thermally assisted recording is also reviewed as it combines good writeability with high thermal stability.
    Full-text · Article · Sep 2002 · Journal of Physics D Applied Physics
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