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AssigneeSony Corporation
InventorsMichiya Sako, Kazue Tokuchida, Keiji Narusawa
Estimating the term…
In order to solve a problem that it takes a long time to shift from a write mode to a read mode when there is a cross talk of an output signal of a recording head to a reproducing amplifier side, there is provided a reproducing amplifier including an amplifier circuit portion having a differential pair of transistors is provided with a switching circuit comprised of switches connected with resistors, which supply a bias voltage to each base of the differential pair of transistors, respectively in parallel. The switching circuit turns on for a write mode period and for a fixed period after a change from the write mode to a read mode to decrease the input impedance of the reproducing amplifier for the periods.
A reproducing amplifier for amplifying a signal from a reproducing head, said amplifier comprising:
A magnetic recording/reproducing apparatus for recording information on a medium being a magnetic material and reproducing the recorded information, said apparatus comprising a reproducing amplifier for amplifying a signal from a reproducing head, said amplifier including control means for decreasing its input impedance for a write mode period and a fixed period after switching from the write mode to a read mode.
Dependencies are inferred from the claim text.