Magnetic Recording Handbook

ISBN-13: 9789401094702 / Angielski / Miękka / 2012 / 718 str.

Camras

Opis

When I started in magnetic recording nearly fifty years ago, it was easy to perceive the common sense of it. There was very little mathematics and every new finding was a source of wonder. I have tried to recapture this spirit with simple explanations, while maintaining a high density of infonnation and cov- ering the entire field. This book introduces a novice to magnetic recording and its many branches. It includes reference data for designers and users. Each chapter stands by itself; no prerequisites are essential. For a quick survey, the equations and worked- out examples can be disregarded. The magnetic recording art is changing so rapidly that new advances are announced almost every month. These are properly covered by journal articles and manufacturers' catalogs. This book will fulfil its purpose if it gives a back- ground for easily comprehending the new advances. I have included subjects and devices not found elsewhere, and some unconventional viewpoints. I would welcome comments from readers. To Jay McKnight I am deeply grateful for important suggestions and helpful comments. I appreciate also the help of BASF, John Boyers, Joseph Dundovic, Charles Ginsburg, Peter Hammar, Yasuo Imaoka, Hal Kaitchuk, Otto Kornei, Harold Miller, Jack Mullin, Jim Novak, Lenard Perlman, Carl Powell, Sidney Rubens, John Shennan, Shigeo Shima, Heinz Thiele, Yoshimi Watanabe and many others; and to my daughter Ruth for typing.

Spis treści

1 Magnetic Recording History and Early Recorders.- Historical highlights, devices, and pioneers.- American developments.- European developments.- Later American developments.- Contemporary developments.- 1. Theory, Technology, and Manufacture.- 2 Fundamentals of Magnetic Recording.- Magnetism.- Electromagnetism.- Magnetic measurements.- Magnetic materials.- Some general concepts of magnetic recording.- Magnetic recordings made visible.- Basic components of a magnetic recorder.- Theory of magnetic recording.- AC or high-frequency (hf) biasing.- HF bias and domain theory.- Overall response.- Special conditions in magnetic recording.- Magnetooptical and magnetoelectronic recording and playback.- Magnetoferrography.- 3 Magnetic Record Media.- Desirable qualities of a magnetic record.- Effects of magnetic and physical properties.- Coated tapes.- Coated discs and drums.- Deposited magnetic films.- Perpendicular-oriented record media.- Tape testing.- Wear life of coated tapes.- Use and care of magnetic records.- Magnetic measuring instruments.- 4 Magnetic Heads.- Ring heads: the external field.- Ring heads: the magnetic circuit.- Magnetic circuit calculations.- Electrical properties of heads.- Playback head calculations.- Impedance calculations.- Head design: the head core.- Head windings.- Position of winding on the core.- Head shielding.- Recording effects.- Simultaneous record and playback.- Multichannel heads.- Computer and instrumentation heads.- Head wear.- Lubricants.- Head adjustments.- 5 Magnetic Heads: Special Designs.- High density heads.- High frequency—high field heads.- Contour-free heads.- Permeable gap head.- Flux sensitive heads.- Thin film heads.- Stylus heads.- Boundary displacement head.- Scanning heads.- 6 Electronic Systems.- Amplifiers.- Analog recording, and equalization of frequency response.- Playback of analog recordings.- Equalization standards for analog systems.- Instrumentation: direct recording.- Instrumentation and video: FM systems.- Digital systems.- Biasing and erasing.- 7 Tape Transports.- General purpose and audio tape drives.- Professional tape transports.- Computer and instrumentation drives.- Special drives.- Servomechanisms and electric controls.- Elongation, bending, and vibration of tapes.- Theory of tape transports.- Flutter and wow.- 8 High Density Recording and Noise Limits.- Recording densities.- High density heads.- High-density tapes.- Optimum recording densities.- Information theory.- Applications of information theory and noise reduction.- 2. Applications of Magnetic Recording.- 9 Professional Audio.- Master recording.- Studio techniques.- Mixdown.- Console electronics.- Professional tape transports.- Record-play electronics and heads.- Magnetic sound for motion pictures.- Digital audio.- 10 General Audio Recording.- Cassettes and cassette recorders.- Cartridges and cartridge recorders.- Reel-to-reel recorders.- Special recorders.- Special effects with magnetic recorders.- Digital audio.- Duplication of recordings.- 11 Professional Video Recording.- Quadruplex video recorders.- Helical scan recorders.- Type C one-inch helical scan format.- Type B one inch helical scan format.- Instant replay.- U-format cassette recorders.- Video editing.- Digital video recording.- Television standards in various countries.- 12 Home Video Tape Recording.- Betamax and VHS recorders.- High fidelity sound for slant scan recorders.- Other video formats.- Special effects.- Fixed head video recorders.- Duplication of cassettes.- Magnetic recording of still pictures.- 13 Data Recording.- Direct recording.- FM and carrier recording.- Digital data recording.- PCM and HDR.- Spacecraft recorders.- Special magnetic data recording.- 14 Computer Recording.- Reel-to-reel storage.- Rapid access storage.- Magnetic disc systems.- Winchester systems.- Removable disc-pack systems.- Flexible discs.- Backup storage.- Trends in computer recording.- Bibliography and References.- Appendix A. Highlights of Magnetic Recording Development.- Appendix B. Magnetic Recording Album.- Appendix C. Advances in Basic Magnetism.- Appendix D. Advances in Applied Magnetism.- Appendix E. True Position Dimensioning.- Appendix F. Compact Cassette Dimensions, 700. 8-mm Cassette Dimensions.- Appendix G. Standards Agencies.- Appendix H. ANSI Standards Relating to Magnetic Recording.- Appendix I. SMPTE Magnetic Recording Standards.- Appendix J. Physical Constants.- Appendix K. Conversion Factors.- Appendix L. Reference Information of Special Interest.