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
Micro-fluidic device
Electronic circuit having shared leakage current reduction circuits
Piezoelectric quasi-resonance linear motors based on acoustic standing waves with combined resonator
Method for producing cathode active material for a lithium secondary battery
Switchgear operating apparatus and three-phase switchgear
Point-in-time copies in a cascade using maps and fdisks
Method and apparatus for controlling peak amplifier and doherty power amplifier
  Randomly Featured Patents
Flexible shaft coupling
Automatic tuning apparatus for filter and communication instrument
Digital frequency synthesizer having selectable frequency offset between transmit and receive frequencies
Method for the production of arylsulfides and compositions made therefrom
Tank container
Universal introducer
Acoustic sensor assembly for a microwave oven
Stitched seam structure, item of clothing comprising a stitched seam structure and method for producing a stitched seam structure
Multi-purpose exercising apparatus
Flanged fitting for a catalytic converter