Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Liquid crystal display device with a control mechanism for eliminating images
Monitoring cloud-runtime operations
Power converter and method including noise suppression by controlling phase shifting of converter cells
Scattering spectroscopy employing hotspot-aligned nanopores
Nucleic acid-based tests for prenatal gender determination
Dual-box location aware and dual-bitmap voltage domain aware on-chip variation techniques
Medical injector
  Randomly Featured Patents
Antibodies for the detection of mammalian ras gene products, method of preparing and method of using same
Domed cover for swimming pools
Structure enhancing hollow fiber module
Tissue treatment device for an extremity
Reactive power compensation apparatus
Process for adjusting the secondary-cooling rate of a continuous-casting machine
Biocompatible coating of medical devices
Vehicle seat particularly for aircraft
Rolling mill
Promotional display signage and method of manufacture