Consecutive bit access of magnetic bubble domain memory devices
OwnerIsoris S. Gergisinventor
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Abstract
A magnetic bubble domain chip layout or organization which achieves consecutive bit access is provided by arranging the device in two substantially identical halves or parts. Each half contains half of the total number of storage loops, a separate access loop with its own generator, switches between the storage loop and an access loop, and a separate detector. The separate detectors are connected together to form two arms of a single bridge wherein consecutive bit output is achieved. The generators in each half of the device are located at different distances from the switches between the loops in one half of the device and the associated access loop. In addition, each of the detectors is located a different distance from the switches in the respective halves or parts of the device.
Claims22
In combination,
- first and second generator means capable of operating concurrently to produce information bits,
- first and second storage means,
- first and second separate access paths for coupling said first and second generator means to said first and second storage means, respectively,
- said first access path defining a first access distance between said first generator means and the associated first storage means,
- said second access path defining a second access distance between said second generator means and the associated second storage means,
- said first and second access distances having a prescribed first difference whereby said first storage means can receive information only from said first generator means and said second storage means can receive information only from said second generator means via the respective first and second access paths,
- first and second detector means,
- first and second separate coupling means,
- said first coupling means defining a first coupling distance between said first storage means and said first detector means, and
- said second coupling means defining a second coupling distance between said second storage means and said second detector means,
- said first and second coupling distances having a prescribed second difference which is related to said prescribed first difference whereby said first detector can receive information only from said first storage means and said second detector means can receive information only from said second storage means via the respective first and second coupling means.
In a magnetic bubble memory device having a magnetic film for supporting magnetic bubbles, including generator means for creating magnetic bubbles in said film, and detector means for sensing said magnetic bubbles, the improvement which comprises a first and second storage area located on said film with said first storage area a different number of bubble periods from said detector means than said second storage area, so that bubbles from said first storage area arrive at said detector means at a different cycle of rotation than bubbles from said second storage area, enabling consecutive bit reading of said magnetic bubbles.
In a magnetic bubble memory device having a magnetic film for supporting magnetic bubbles, including generator means for providing magnetic bubbles in said film, and detector means for sensing said magnetic bubbles, the improvement which comprises first and second storage areas located on said film with said first storage area located a different number of bubble periods from said generator means and said detector means than said second storage area, thereby enabling consecutive bit reading and writing of said magnetic bubbles.
A magnetic bubble memory device comprising a magnetic film for supporting magnetic bubbles representative of information bits including:
- generator means for creating magnetic bubbles;
- first and second storage areas, located in adjacent relationship to one another, for storing said magnetic bubbles;
- and,
- detector means for sensing said magnetic bubbles, wherein said first storage area is a different number of bubble periods from said generator and said detector than said second storage area, enabling said magnetic bubbles to be read from and written to said first and second storage areas in a consecutive bit fashion.
A magnetic bubble memory device comprising:
- at least one generator for providing magnetic bubbles representative of information bits;
- first and second storage areas for storing said magnetic bubbles,
- at least one generator access path located between said at least one generator and said first and second storage areas for temporarily storing said magnetic bubbles and providing a delivery path from said at least one generator to said first and second storage areas;
- at least one detector for sensing said magnetic bubbles, wherein said first storage area is a different number of bubble periods from said detector than said second storage area, so that one of said first and second storage areas is closer in proximity to said detector than the other, enabling consecutive bit access;
- at least one detector access path located between said detector and said first and second storage areas for providing a delivery path from said at least one detector and said first and second storage areas;
- and,
- transfer means for moving magnetic bubbles from said first and second storage areas to said at least one detector, and to said first and second
- storage areas from said at least one generator.
Dependencies are inferred from the claim text.