| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To attain transmission at high frequencies and mounting of multi-channels by eliminating the wiring on a rotating drum. <P>SOLUTION: In a helical scan magnetic recording/reproducing device for transmitting outputs of two reproduction heads 5A, 5B oppositely facing with 180°, by a rotating transformer 9 of 1 channel in the manner of changing them over, a winding 9r of the rotor side of a reproducing rotating transformer 9 is divided into 9r1, 9r2 and they are connected by pulling out at two places a, b nearly confronting the output terminals of the head amplifiers 16a, 16b having self short-circuiting switches SW2a, SW2b for amplifying the outputs of the reproduction heads 5A, 5B. The head amplifiers 16a, 16b and the rotating transformer 9 are connected direct without using the wiring. The switching of the outputs of the reproduction heads are carried out by short-circuiting the self short-circuiting switch of the head amplifier of the head not reproducing. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
