专利内容由知识产权出版社提供
专利名称：Digitally controlled automatic bias circuit for
magnetic recording
发明人：Lucas K. Tin申请号：US06/090137申请日：19791101公开号：US04280153A公开日：19810721
摘要：A digital circuit for generating a linearly increasing signal is provided forcontrolling the level of a recording A. C. bias signal. The digitally controlled bias signal ismixed with an analog signal of a known frequency and constant level and recorded. Thecircuit detects and stores a recording bias level corresponding to a reproduce signalenvelope level, equal to an obtained peak level adjusted with respect to a knownoverbias level. The circuit compensates the detected recording bias level with respect todistance between the recording and reproducing heads to obtain an optimum recordingbias level. The detected bias level remains stored and unchanged during power supplyinterruption.
申请人：AMPEX CORPORATION
代理人：Robert G. Clay,Elizabeth E. Strnad
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