Head positioning apparatus

Details Head positioning apparatus Head positioning apparatus

G - Physics

11

B

352/21.1, 352/21

G11B 5/58 (2006.01) G11B 5/592 (2006.01) H04N 5/782 (2006.01)

Patent

CA 1205190

HEAD POSITIONING APPARATUS ABSTRACT OF THE DISCLOSURE A head positioning apparatus for an HVTR has two rotary heads mounted to a rotating drum by electrically deflectable bi-morph leaves. To trace tracks on the tape when the tape is played back at a speed different from that used to record it, tracking correction signals are repeatedly applied to the bi-morph leaves to deflect the heads into position to trace the tracks properly. Residual deflection in the bi-morph leaves, when the tracking correction signals terminate at the end of each trace, is removed by a hysteresis-erasing signal that flexes the bi-morph leaf back and forth. The polarity of the hysteresis-erasing signal depends on whether the tape on playback is running faster or slower than the recording speed.

424790

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