Electric field storage device

Patent metadata

Field	Value
Publication number	US-10056146-B2
Application number	US-201715415666-A
Country	US
Kind code	B2
Filing date	Jan 25, 2017
Priority date	Nov 7, 2016
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

The system includes a data storage medium comprising cells, an excitation circuit, and an emitter. The cells arranged in a three dimensional space. The excitation circuit excites each cell independently. Exciting a cell changes an optical property of the cell. The emitter emits a first beam onto a first cell during a first excitation period to orient electrical charges within the first cell to a first oriented value and intensity of electric field to a first intensity value. The emitter emits a second beam onto a second cell during a second excitation period to orient electrical charges within the second cell to a second oriented value and intensity of electric field to a second intensity value. The first and second cells maintain the first and the second oriented values and the first and second intensity values after the first and second excitation periods are over, respectively.

First claim

What is claimed is:

1. An system comprising:
a data storage medium comprising a plurality of cells arranged in a three dimensional space with respect to one another, and wherein each cell is configured to store electric field information therein;
an excitation circuit configured to excite each cell of the plurality of cells independent from one another during excitation period associated therewith, wherein exciting a cell during the excitation period changes an optical property of the cell being excited, wherein the optical property associated with a first cell changes to its original optical property after a first excitation period is over; and
an emitter configured to emit a first beam onto the first cell being excited during the first excitation period to change electrical characteristics of the first cell that correspond to a first electric field information, and wherein the emitter is further configured to emit a second beam onto a second cell being excited during a second excitation period to change electrical characteristics of the second cell that correspond to a second electric field information, wherein the first cell maintains the changed electrical characteristics that corresponds to the first electric field information after the first excitation period is over and wherein the second cell maintains the changed electrical characteristics that corresponds to the second electric field information after the second excitation period is over.

2. The system as described in claim 1 , wherein the data storage medium comprises optically transparent material.

3. The system as described in claim 1 , wherein the emitter is a femtosecond laser and wherein the first beam is laser.

4. The system as described in claim 1 , wherein the excitation circuit is configured to apply an alternate current (AC) voltage to the first cell during the first excitation period and to apply AC voltage to the second cell during the second excitation period.

5. The system as described in claim 1 , wherein the change to the optical property includes a refractive changes and reflective changes.

6. The system as described in claim 1 , wherein the electric field information comprises orientation of an electric field and an intensity of electric field.

7. The system as described in claim 1 , wherein the emitter further comprises:
a graphene ultrathin lens.

8. The system as described in claim 1 , wherein the first the excitation period and the second excitation period share a same start time and an end time.

9. The system as described in claim 1 , wherein at least one of a start time, end time, and duration associated with the first excitation period and the second excitation period is different.

10. The system as described in claim 1 , wherein the first beam and the second beam are emitted simultaneously to the first and the second cell respectively.

11. The system as described in claim 1 , wherein a value of the electric field information has at least four possible values.

12. The system as described in claim 1 , wherein the first cell and the second cell are within a same horizontal plane.

13. The system as described in claim 1 , wherein the first cell and the second cell are in different horizontal planes.

14. An system comprising:
a data storage medium comprising a plurality of cells arranged in a three dimensional space with respect to one another;
an excitation circuit configured to excite each cell of the plurality of cells independent from one another during excitation period associated therewith, wherein exciting a cell during the excitation period changes an optical property of the cell being excited, wherein the optical property associated with the cell being excited changes to its original optical property after the excitation period is over; and
an emitter configured to emit a first beam onto a first cell being excited during a first excitation period to orient electrical charges within the first cell to a first oriented value and intensity of electric field associated therewith to a first intensity value, and wherein the emitter is further configured to emit a second beam onto a second cell being excited during a second excitation period to orient electrical charges within the second cell to a second oriented value and intensity of electric field associated therewith to a second intensity value, wherein the first cell maintains the first oriented value and the first intensity value after the first excitation period is over and wherein the second cell maintains the second oriented value and the second intensity value after the second excitation period is over.

15. The system as described in claim 14 , wherein the data storage medium comprises optically transparent material.

16. The system as described in claim 14 , wherein the emitter is a femtosecond laser and wherein the first beam is laser.

17. The system as described in claim 14 , wherein the excitation circuit is configured to apply an alternate current (AC) voltage to the first cell during the first excitation period and to apply AC voltage to the second cell during the second excitation period.

18. The system as described in claim 14 , wherein the change to the optical property includes a refractive changes and reflective changes.

19. The system as described in claim 14 , wherein the emitter further comprises:
a graphene ultrathin lens.

20. The system as described in claim 14 , wherein the first excitation period is different from the second excitation period.

21. The system as described in claim 14 , wherein the first excitation period at least partially overlaps the second excitation period.

22. The system as described in claim 14 , wherein the first beam and the second beam are emitted simultaneously to the first and the second cell respectively, and wherein the a power of the first beam controls the first intensity value and wherein a power of the second beam controls the second intensity value.

23. The system as described in claim 14 , wherein the first oriented value has one of at least two values and wherein the first intensity value has one of at least two values.

24. The system as described in claim 14 , wherein the first cell and the second cell are within a same horizontal plane.

25. The system as described in claim 14 , wherein the first cell and the second cell are in different horizontal planes.

26. An system comprising:
a data storage medium comprising a plurality of cells arranged in a three dimensional space with respect to one another; and
an excitation circuit configured to excite each cell of the plurality of cells independent from one another during excitation period associated therewith, wherein exciting a cell during the excitation period changes an optical property of the cell being excited, wherein the optical property associated with the cell being excited changes to its original optical property after the excitation period is over,
wherein electrical charges within a first cell is oriented to a first oriented value and a first intensity value responsive to emission of a first beam onto the first cell being excited during a first excitation period, and wherein electrical charges within a second cell is oriented to a second oriented value and a second intensity value responsive to emission of a second beam onto the second cell being excited during a second excitation period, wherein the first cell maintains the first oriented value

Assignees

• Seagate Technology Llc

Inventors

• Ahner Joachim
• Tung David Marcus

Classifications

• G11C13/048

  using other optical storage elements · CPC title

• G11C13/047 Primary

  using electro-optical elements (G11C13/042 takes precedence) · CPC title

• G11B7/24088

  for storing more than two values, i.e. multi-valued recording for data or prepits · CPC title

• G11B7/00

  Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation {by modifying optical properties or the physical structure}, reproducing using an optical beam at lower power {by sensing optical properties}; Record carriers therefor (G11B11/00, G11B13/00 take precedence) · CPC title

• G11C7/005

  with combined beam-and individual cell access · CPC title