US3827032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differentially coupled memory arrays
Assignee: INTEGRATED MEMORIES Inc
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Filing: 1972-06-19
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Granted: 1974-07-30
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Expires: 1992-06-19
Abstract
Abstract A read-only memory plane has a plurality of storage elements arranged in a matrix of columns and rows. Drive means are associated with the columns of elements for energizing the elements and a plurality of sense lines are associated with the row of elements for determining the information content of the storage elements. A second matrix of storage elements is within the memory plane in tandem with the first matrix of elements. A second set of drive means and sense lines are provided for the read-out of the second array of storage elements. The information read-out is manifest in the presence or absence of signals induced in the sense lines when the storage elements are energized. Pairs of sense lines one in each pair from the first array and the other from the second array, are coupled to respective differential amplifiers for amplifying the induced signals and for rejecting any stray signals including background noise which would be common to the two arrays.
Inventors
- 👤 W Abbott
- 👤 T Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:23
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
178 words
A capacitive memory comprising: a first memory plane having a plurality of conductive sense lines, a plurality of conductive drive lines disposed substantially orthogonal to said sense lines, a ground plane disposed between said sense and drive lines for providing electrostatic shielding between them, said ground plane having a plurality of apertures at certain intersections between said sense and drive lines which define a plurality of coupling boundaries for allowing capacitive coupling between said lines within said boundaries at said locations upon the application of an electronic signal to at least one of said drive lines; a second memory plane substantially similar in structure and dimension as said first memory plane having sense lines, drive lines and a ground plane having a plurality of apertures at possibly different intersections between sense and drive lines; differential signal processing means coupling the sense lines associated with said first plane to the sense lines associated with said second plane and means for driving the sense lines associated with said first plane independently from the sense lines associated with said second plane.
Claim 2
Dependent Claim
178 words
A capacitive memory comprising: a first memory plane having a plurality of conductive sense lines, a plurality of conductive drive lines disposed substantially orthogonal to said sense lines, a ground plane disposed between said sense and drive lines for providing electrostatic shielding between them, said ground plane having a plurality of apertures at certain intersections between said sense and drive lines which define a plurality of coupling boundaries for allowing capacitive coupling between said lines within said boundaries at said locations upon the application of an electronic signal to at least one of said drive lines; a second memory plane substantially similar in structure and dimension as said first memory plane having sense lines, drive lines and a ground plane having a plurality of apertures at possibly different intersections between sense and drive lines; differential signal processing means coupling the sense lines associated with said first plane to the sense lines associated with said second plane and means for driving the sense lines associated with said first plane independently from the sense lines associated with said second plane.
Claim 3
Dependent Claim
41 words
The memory as defined in claim 1 wherein said signal processing means couples at least one pair of sense lines, one line of said pair being associated with said first plane and the other line being associated with said second plane.
Claim 4
Dependent Claim
60 words
The memory as defined in claim 2 wherein said signal processing means comprises a plurality of differential amplifier means, each of which couples said pairs of sense lines for amplifying any signals induced in said sense lines, for indicating the information content of the memory planes, and for rejecting any undesirable stray signals which would be common to said planes.
Claim 5
Dependent Claim
21 words
The memory as defined in claim 3 wherein said memory planes form parallel planes which are in tandem with one another.
Claim 6
Dependent Claim
32 words
The memory as defined in claim 4 wherein said second memory plane is a mirror image of said first memory plane provided that the information content of said planes may be different.
Claim 7
Dependent Claim
94 words
A capacitive memory comprising: a first memory plane having a plurality of conductive sense lines and a plurality of conductive drive lines disposed substantially orthogonal to said sense lines; a second memory plane substantially similar in structure and dimension as said first memory plane having sense lines and drive lines; differential signal processing means coupling the sense lines associated with said first plane to the sense lines associated with said second plane; and means for driving the sense lines associated with said first plane independently from the sense lines associated with said second plane.
Claim 8
Dependent Claim
94 words
A capacitive memory comprising: a first memory plane having a plurality of conductive sense lines and a plurality of conductive drive lines disposed substantially orthogonal to said sense lines; a second memory plane substantially similar in structure and dimension as said first memory plane having sense lines and drive lines; differential signal processing means coupling the sense lines associated with said first plane to the sense lines associated with said second plane; and means for driving the sense lines associated with said first plane independently from the sense lines associated with said second plane.
Claim 9
Dependent Claim
41 words
The memory as defined in claim 6 wherein said signal processing means couples at least one pair of sense lines, one line of said pair being associated with said first plane and the other line being associated with said second plane.
Claim 10
Dependent Claim
60 words
The memory as defined in claim 7 wherein said signal processing means comprises a plurality of differential amplifier means, each of which couples said pairs of sense lines for amplifying any signals induced in said sense lines, for indicating the information content of the memory planes, and for rejecting any undesirable stray signals which would be common to said planes.
Claim 11
Dependent Claim
79 words
The memory as defined in claim 8 wherein respective ground planes arE disposed between the sense and drive lines of said first and second planes, each of said ground planes having a plurality of apertures at certain intersections between said sense and drive lines which define a plurality of coupling boundaries for allowing capacitive coupling between said lines within said boundaries at said locations upon the application of an electronic signal to at least one of said drive lines.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |