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
Methods, devices and computer program products providing for establishing a model for emulating a physical quantity which depends on at least one input parameter, and use thereof
Generating a representation of an object of interest
Deposition apparatus and method for manufacturing organic light emitting diode display using the same
Systems and methods for simultaneously configuring multiple independent backups
Method of analyzing cell structures and their components
Combination therapy to enhance NK cell mediated cytotoxicity
Display apparatus and control method thereof
  Randomly Featured Patents
Method and apparatus for electromagnetic treatment of the skin, including hair depilation
Coffee makers
Bottle closure with flip top
Reducing resource requirements when transforming source data in a source markup language to target data in a target markup language using transformation rules
Fitting for a vehicle seat
Methods and apparatus for providing bit-reversal and multicast functions utilizing DMA controller
Lockable ring binder mechanism
Beam scattering laser resistant structure
Ambient noise isolation audio headphones having a layered dampening structure
Depth highlight, depth highlight range, and water level offset highlight display and systems