Abstract
This paper describes a new dynamic track following (DTF) system for home use digital VTR. The system's magnetic heads are moved by an electro-magnetic actuator and follow the recorded track on the magnetic tape. The shapes and dimensions of the actuator's elements are examined in order to get a higher resonance frequency. Actuator resonance is suppressed by a displacement control circuit. Experiments performed by using this new DTF system in an experimental digital VTR deck yielded the following conclusions. (1) The controlled band width is 300Hz. (2) The areal recording density is 2μm2/bit and the track density is 4200 TPI (track width : 6μm) on a metal evaporated tape.
