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A New Technique for Wide-Band Video Recording

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2 Author(s)
Frost, W.T. ; Advanced Systems Development Division laboratory, Los Gatos, California, USA ; Masters, C.T.

An efficient means for distributing the information contained in a wide-band analog signal over two limited bandwidth channels is provided by using frequency modulation and “zero-crossing counting.” The new technique should accommodate at least twice the bandwidth that can be recorded or transmitted by the usual FM methods. Experimental results with a two-channel magnetic tape system confirm this expectation.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:12 ,  Issue: 4 )