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 |
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Page 291
Figure 18-14 Slider and suspension for the IBM 3370. [Courtesy of IBM
Corporation.] to 13 uin. (320 nm), it achieved a bit density of 12,134 b/in. and a
track density of 635 t/in., yielding an areal density of 7.7 Mb/in.2. The 3370 was
the first of a ...
Figure 18-14 Slider and suspension for the IBM 3370. [Courtesy of IBM
Corporation.] to 13 uin. (320 nm), it achieved a bit density of 12,134 b/in. and a
track density of 635 t/in., yielding an areal density of 7.7 Mb/in.2. The 3370 was
the first of a ...
Page 308
Adjacent diskettes could be exchanged within 3 seconds. With two magazines in
place, the maximum attainable formatted capacity was 24 MB. The drive was also
engineered to rotate the diskette at 720 rpm, twice the speed of the other drives ...
Adjacent diskettes could be exchanged within 3 seconds. With two magazines in
place, the maximum attainable formatted capacity was 24 MB. The drive was also
engineered to rotate the diskette at 720 rpm, twice the speed of the other drives ...
Page 322
The optimum designs were tailored to specific applications. Rarely would a
design deliver optimum performance in all areas of a specification, and
compromise solutions became typical for recorders. These trade-offs led to a host
of different ...
The optimum designs were tailored to specific applications. Rarely would a
design deliver optimum performance in all areas of a specification, and
compromise solutions became typical for recorders. These trade-offs led to a host
of different ...
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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