Magnetic Recording: The First 100 YearsEric D. Daniel, C. Denis Mee, Mark H. Clark 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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Page 4
... million cubic centimeters ( 1 cubic meter ) , and it achieved a storage density of about 3 bits per square mil- limeter . A modern disk drive occupies less than 100 cm3 and stores data at a density of more than 4 million bits / mm2 . On ...
... million cubic centimeters ( 1 cubic meter ) , and it achieved a storage density of about 3 bits per square mil- limeter . A modern disk drive occupies less than 100 cm3 and stores data at a density of more than 4 million bits / mm2 . On ...
Page 118
... million bits per second per audio channel . A record- ing of one hour requires something like 500 megabytes ( MB ) of data . While today this requirement is taken for granted , when digital audio recorders were first being developed ...
... million bits per second per audio channel . A record- ing of one hour requires something like 500 megabytes ( MB ) of data . While today this requirement is taken for granted , when digital audio recorders were first being developed ...
Page 153
... million consumer video cassette recorders have been manufactured annually . This figure far exceeded the production of hard disk drives for personal computers , where an annual rate of 50 million units was attained only in the year 1995 ...
... million consumer video cassette recorders have been manufactured annually . This figure far exceeded the production of hard disk drives for personal computers , where an annual rate of 50 million units was attained only in the year 1995 ...
Contents
AUDIO RECORDING | 6 |
The Telegraphone | 15 |
Steel Tape and Wire Recorders | 30 |
Copyright | |
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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 audio recording b/in bandwidth BASF bit density broadcast capacity capstan cartridge channel coating color compact cassette consumer cost Courtesy of IBM data rate data recording data storage developed device diameter digital audio 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 Japan laboratory machine magnetic disk magnetic drum magnetic recording magnetic tape Magnetophon manufacturers Mb/s mechanism memory Model modulation operation Panasonic performance personal computer playback Poulsen production quadruplex radio RAMAC read/write recording format recording medium recording system recording technology reel rotating slider SMPTE Sony sound standard stored t/in tape drive tape systems Telegraphone television tion track density United video cassette recorder video signal video tape recorder wire