| 摘要 |
<p>A thin film write head allowing substantially the same amplitude of input current to be used for writing both data transitions and equalization pulses onto a magnetic tape is described. Data transitions occur at a frequency no greater than a data frequency. Each equalization pulse is a signal written at an equalization frequency much greater than the data frequency. The thin film write head includes a top pole (54), a bottom pole (52), and a conductive coil (56), between the top and bottom poles. The top pole (54), bottom pole (52), and conductive coil (56), form an electromagnet for writing the write-equalized digital data stream onto the magnetic tape by converting an input current through the conductive coil into a head field. Conversion of the input current at the data frequency results in substantially the same head field amplitude as conversion of the input current at the equalization frequency. This may be achieved by increasing the gap depth (104) to cause saturation at the data frequency.</p> |
