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US 6,587,408 B1Granted
High-density mechanical memory and turing machine
AssigneeMassachusetts Institute of Technology
InventorsJoseph M. Jacobson, Brian N. Hubert, Brent Ridley
Life of this patent
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Abstract
Micron-scale, self-contained, ultra-high density and ultra-high speed storage devices include a read/write head and a surface, containing bit-storage domains, that acts as the storage medium. The read/write element of the memory device may consist of a single or multiple heads. The read/write head may be mounted on microelectromechanical structures driven at mechanical resonance. Addressing of individual bits is accomplished by positioning of the head element in close proximity to bit domains situated on the storage medium.
Claims28
A memory device comprising:
- a. a data-storage element comprising a support and an array of bit-storage domains arranged on the support, the bit-storage domains being reversibly or irreversibly addressable individually and retaining a readable state upon subjection to an effect-inducing field, the support having a surface comprising an array of pillars projecting therefrom, the bit-storage domains residing atop the pillars and the support being substantially unaffected by the field;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of bit-storage domains arranged on the support, the domains being insulated from each other by air, the domains being reversibly or irreversibly addressable individually and retaining a readable state upon subjection to an effect-inducing field, the support being substantially unaffected by the field;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of bit-storage domains arranged on the support, the bit-storage domains comprising capping groups insulating the bit-storage domains from each other, the domains being reversibly or irreversibly addressable individually and retaining a readable state upon subjection to an effect-inducing field, the support being substantially unaffected by the field;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means-for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of bit-storage domains arranged on the support, the bit-storage domains comprising nanoparticles having side chains that insulate the nanoparticles from each other, the domains being reversibly or irreversibly addressable individually and retaining a readable state upon subjection to an effect-inducing field, the support being substantially unaffected by the field;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of bit-storage domains arranged on the support, the bit-storage domains being metal-organic compounds exhibiting charge retention, the domains being reversibly or irreversibly addressable individually and retaining a readable state upon subjection to an effect-inducing field, the support being substantially unaffected by the field;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of bit-storage domains arranged on the support, the bit-storage domains being organic or metal-organic compounds exhibiting at least one of (i) different oxidation states and (ii) different structural or conformational states, the domains being reversibly or irreversibly addressable individually and retaining a readable state upon subjection to an effect-inducing field, the support being substantially unaffected by the field;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of bit-storage domains arranged on the support, the domains being reversibly or irreversibly addressable individually and retaining a readable state upon subjection to an effect-inducing field, the support being substantially unaffected by the field;
- b. means for directing the field at selected ones of the bit-storage domains;
- c. means for reading the state of selected ones of the bit-storage domains;
- and
- d. means for causing relative movement between (i) the data-storage element and
- (ii) the field-directing means and the reading means, the movement-causing means comprising a positioning gantry, the gantry comprising:
- a. a stationary frame;
- b. first and second translation platforms nested within the frame, the second translation platform being nested within the first translation platform;
- c. a first driver for causing the first translation platform to controllably reciprocate relative to the frame along a first dimension;
- and
- d. a second driver for causing the second translation platform to reciprocate relative to the first translation platform along a second dimension orthogonal to the first dimension.
8 more elements
A memory device comprising:
- a. a data-storage element comprising a support and an array of individually addressable bit-storage domains on the support, the domains reversibly or irreversibly retaining a readable state upon subjection to an effect-inducing field without affecting the states of adjacent domains, the domains having a size no greater than 50 nm and being spaced apart by a distance no greater than 120 nm, the support having a surface comprising an array of pillars projecting therefrom, the bit-storage domains residing atop the pillars;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of individually addressable bit-storage domains on the support, the domains reversibly or irreversibly retaining a readable state upon subjection to an effect-inducing field without affecting the states of adjacent domains, the domains having a size no greater than 50 nm and being spaced apart by a distance no greater than 120 nm, the support being a continuous, amorphous film exhibiting reversible, hysteretic switching, the bit-storage domains being arbitrary locations on the film;
- b. means for directing the field at selected ones of the bit-storage domains;
- and
- c. means for reading the state of selected ones of the bit-storage domains.
1 more element
A memory device comprising:
- a. a data-storage element comprising a support and an array of individually addressable bit-storage domains on the support, the domains reversibly or irreversibly retaining a readable state upon subjection to an effect-inducing field without affecting the states of adjacent domains, the domains having a size no greater than 50 nm and being spaced apart by a distance no greater than 120 nm;
- b. means for directing the field at selected ones of the bit-storage domains;
- c. means for reading the state of selected ones of the bit-storage domains;
- and
- d. means for causing relative movement between (i) the data-storage element and
- (ii) the field-directing means and the reading means, the movement-causing means comprising a positioning gantry, the gantry comprising:
- a. a stationary frame;
- b. first and second translation platforms nested within the frame, the second translation platform being nested within the first translation platform;
- c. a first driver for causing the first translation platform to controllably reciprocate relative to the frame along a first dimension;
- and
- d. a second driver for causing the second translation platform to reciprocate relative to the first translation platform along a second dimension orthogonal to the first dimension.
8 more elements
Dependencies are inferred from the claim text.