Dynamic data restore in thyristor-based memory device
AssigneeT-Ram, Inc.
InventorsFarid Nemati, Hyun-Jin Cho, Robert Homan Igehy
Life of this patent
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AssigneeT-Ram, Inc.
InventorsFarid Nemati, Hyun-Jin Cho, Robert Homan Igehy
Estimating the term…
A dynamically-operating restoration circuit (106) is used to apply a voltage or current restore pulse signal to thyristor-based memory cells (108) and therein restore data in the cell using the internal positive feedback loop of the thyristor (110). In one example implementation, the internal positive feedback loop in the thyristor (110) is used to restore the conducting state of a device after the thyristor current drops below the holding current. A pulse and/or periodic waveform are defined and applied to ensure that the thyristor is not released from its conducting state. The time average of the periodic restore current in the thyristor may be lower than the holding current threshold. While not necessarily limited to memory cells that are thyristor-based, various embodiments of the invention have been found to be the particularly useful for high-speed, low-power memory cells in which a thin capacitively-coupled thyristor is used to provide a bi-stable storage element.
An electronic circuit arrangement, comprising:
A method for dynamically restoring data in a thyristor-based memory device having a plurality of memory cells, each memory cell having a thyristor with an internal positive feedback loop, the method comprising:
A method for maintaining a forward conducting state of a thyristor-based memory device, the method comprising:
A method for dynamically restoring data in a memory device having a plurality of memory cell arrays and each memory cell having an internal positive feedback loop, the method comprising:
An electronic circuit arrangement, comprising:
An electronic circuit arrangement, comprising:
Dependencies are inferred from the claim text.