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US3713114A Expired / Lapsed US ⏱️ 0.0 years remaining

Data regeneration scheme for stored charge storage cell

Assignee: International Business Machines Corp
•
Filing: 1969-12-18
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Granted: 1973-01-23
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Expires: 1989-12-18
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Abstract

Abstract This specification discloses a scheme for regenerating the data in stored charge storage cells of monolithic memories. The scheme involves periodic reading out of the data in the stored charge storage cells and temporarily storing the data in the capacitance of an address line for the storage cell. Thereafter the data on the address line is written back into the cell.

Inventors

  • 👤 R Linton
  • 👤 G Sonoda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 10:40
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/401; G11C11/406; G11C11/403; G11C11/405; G11C11/4063; G11C11/407; G11C11/409; G11C11/4094

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 132 words
In a matrix of stored charge memory cells each addressed by the selection of a plurality of lines out of a grid of addressing lines for the matrix, a data regeneration scheme for periodically restoring the data stored in the memory cell without reading data out of the matrix, comprising: read means for reading the data stored in anY given cell out onto one of the plurality of lines for addressing the cell; storage means connected directly to said one of the plurality of lines for temporarily storing the data so read out on said one of said plurality of lines so that it can be later read back into the given storage cell; and write means for writing the data stored in the storage means back into the given storage cell.
Claim 2
Dependent Claim 132 words
In a matrix of stored charge memory cells each addressed by the selection of a plurality of lines out of a grid of addressing lines for the matrix, a data regeneration scheme for periodically restoring the data stored in the memory cell without reading data out of the matrix, comprising: read means for reading the data stored in anY given cell out onto one of the plurality of lines for addressing the cell; storage means connected directly to said one of the plurality of lines for temporarily storing the data so read out on said one of said plurality of lines so that it can be later read back into the given storage cell; and write means for writing the data stored in the storage means back into the given storage cell.
Claim 3
Dependent Claim 66 words
The memory matrix of claim 1 wherein the storage means includes: the line capacitance of said one of said plurality of lines; and restoration means for restoring the charge on said line capacitance after a regeneration cycle consisting of reading the data stored in said given cell onto the line capacitance and writing the data so stored on the line capacitance back into said given cell.
Claim 4
Dependent Claim 159 words
In a word oriented matrix of three semiconductor device memory cells with the first device storing data in the form of charge on one of its interelectrode capacitances and the other two devices coupling said first device to word and bit line means for addressing the particular cell, a data regeneration scheme for periodically restoring the data stored in the memory cell comprising: read means coupled to the word line means for rendering one of said other two devices in a particular cell conductive to thereby read the data stored in any particular cell onto the bit line means for said particular cell; storage means coupled to said bit line means for temporarily storing the data read out from the particular cell onto the bit line means, and write means coupled to the word line means to render the second of the other two devices to write the data stored in the storage means back into said particular cell.
Claim 5
Dependent Claim 159 words
In a word oriented matrix of three semiconductor device memory cells with the first device storing data in the form of charge on one of its interelectrode capacitances and the other two devices coupling said first device to word and bit line means for addressing the particular cell, a data regeneration scheme for periodically restoring the data stored in the memory cell comprising: read means coupled to the word line means for rendering one of said other two devices in a particular cell conductive to thereby read the data stored in any particular cell onto the bit line means for said particular cell; storage means coupled to said bit line means for temporarily storing the data read out from the particular cell onto the bit line means, and write means coupled to the word line means to render the second of the other two devices to write the data stored in the storage means back into said particular cell.
Claim 6
Dependent Claim 59 words
The memory cell of claim 3 wherein said storage means includes: the line capacitance of said bit line means; and restoration means for restoring the charge on said line capacitance after a regeneration cycle consisting of reading the data stored in the particular cell and writing the data as stored on the line capacitance back into the particular cell.
Claim 7
Dependent Claim 38 words
The memory matrix of claim 4 including means for accessing said read means, said write means and said restoration means to perform two regeneration cycles and to restore the charge on said line capacitance between said regeneration cycles.
Claim 8
Dependent Claim 64 words
The memory matrix of claim 3 wherein said three device cells includes: one device storing the data in its interelectrode capacitance; a second device for charging and discharging the charge on the interelectrode capacitance to write data into the three device cell; and a third device for determining the charge stored on the interelectrode capacitance to read the data stored in the storage cell.
Claim 9
Dependent Claim 13 words
The memory matrix of claim 6 wherein said devices are field effect transistors.

References Cited (Backward Citations)

US2823368A Cited
US3111649A Cited
US3387286A Cited
US3541530A Cited
US3576571A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-01-23 1976-07-24 1977-01-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-01-23 1980-07-24 1981-01-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-01-23 1984-07-24 1985-01-23 $7700.00 Window Closed / Lapsed

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