Resources Contact Us Home
Magnetic tape tracking control apparatus

Image Number 7 for United States Patent #4587581.

Tracking control apparatus for a magnetic storage device is provided for playback of information recorded on tracks at alternating azimuth angles which correspond to mutually different azimuth angles of a pair of magnetic playback heads. The playback heads have track-wise widths which are less than the width of their associated record tracks, to prevent the attenuation of their playback signals resulting from limited playback head tracking error. A tracking control head, which has an azimuth angle of one of the playback heads, is mounted for selectively overlapping adjacent record tracks in accordance with the magnitude and direction of the tracking error of the playback heads. Signal comparison circuitry produces a tracking error signal in accordance with the difference between the output of the control head and the output of a playback head. When the storage device is magnetic tape having information recorded on slant tracks, a tape drive servomechanism, responsive to the error signal, momentarily adjusts the speed of the tape, to align the playback heads with respect to their associated record tracks.

  Recently Added Patents
Push-up bar
Multi-contoured yoga support
Electromagnetic probe for measuring properties of a subsurface formation
  Randomly Featured Patents
System and method for a reduced water consumption vacuum toilet
Dynamic adjustment of capture management "safety margin"
Omnidirectional ultrasonic communication system
Process for preparation of cyclohexyl hydroperoxide decomposition catalysts
Method and system for measuring polycrystalline chunk size and distribution in the charge of a Czochralski process
Method and system to detect application non-conformance
Cookware elongated side handle
Multiple data rate interface architecture
Controller system for water amusement devices
Method for printing a pattern on a substrate