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 Paulsen'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 applications in the future. MAGNETIC RECORDING features 116 illustrations, including 92 photographs of historic magnetic recording machines and their inventors." Sponsored by: IEEE Magnetics Society |
From inside the book
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Page xiii
Recording Media 239 Magnetic Drums at Harvard University 246 The University
of Manchester Computer 246 Magnetic Drum Developments at IBM 247 Drums
for Peripheral Storage 248 References 25 1 Chapter 1 7 Data Storage on Tape ...
Recording Media 239 Magnetic Drums at Harvard University 246 The University
of Manchester Computer 246 Magnetic Drum Developments at IBM 247 Drums
for Peripheral Storage 248 References 25 1 Chapter 1 7 Data Storage on Tape ...
Page 224
This is a very fast electronic process, lasting only a few cycles of the computer's
clock. On the other hand, the most commonly used magnetic storage devices (
drums, disks, and tapes) all use mechanical positioning to access the stored data
.
This is a very fast electronic process, lasting only a few cycles of the computer's
clock. On the other hand, the most commonly used magnetic storage devices (
drums, disks, and tapes) all use mechanical positioning to access the stored data
.
Page 225
Reliability An ideal data storage system would always function as designed and
never generate an error in the data, whether reading or writing. In practice, the
deviations from this ideal are expressed in terms of the reliability of a system.
Reliability An ideal data storage system would always function as designed and
never generate an error in the data, whether reading or writing. In practice, the
deviations from this ideal are expressed in terms of the reliability of a system.
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Contents
AUDIO RECORDING | 6 |
The Telegraphone | 15 |
Steel Tape and Wire Recorders | 30 |
Copyright | |
19 other sections not shown
Other editions - View all
Magnetic Recording: The First 100 Years Eric D. Daniel,C. Denis Mee,Mark H. Clark Limited preview - 1998 |
Common terms and phrases
ac bias Ampex analog applications areal density b/in bandwidth BASF bit density broadcast Brush capacity capstan cartridge coating color compact cassette consumer cost Courtesy of IBM data rate data recording data storage device diameter digital recording digital video recording disk drive disk surface diskette early electronic engineers equipment error ferrite Figure film frequency hard disk helical-scan improved inches industry instrumentation recorder Jack Mullin laboratory Ludwigshafen machine magnetic disk magnetic drum magnetic recording magnetic tape Magnetophon manufacturers mechanism memory Model modulation operation oxide Panasonic particles patent performance personal computer phonograph playback Poulsen prerecorded production quadruplex radio read/write recording format recording medium recording system recording technology reel rotating slider SMPTE Sony sound standard stored t/in tape drive tape speed tape systems Telegraphone telephone television tion track density United video cassette recorder video signal video tape recorder