US4024512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line-addressable random-access memory
Assignee: Fairchild Semiconductor Corp
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Filing: 1975-06-16
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Granted: 1977-05-17
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Expires: 1995-06-16
Abstract
Abstract A line-addressable random-access memory (LARAM) comprises a plurality of lines of charge storage elements, means for introducing charge representing binary information to the beginning of particular ones of the plurality of lines of charge storage elements which are addressed, at least one data clock signal means for effecting the transfer of charge along those lines of the charge storage elements which are addressed, an address-selection matrix electrically coupled between the clock signal means and the lines to permit the addressed ones of the lines to be clocked, and charge-sensor means for receiving charge from the addressed lines and, in response thereto, generating a signal which represents the data signified by the charge and for recirculating a refreshed representation of the charge to the means for introducing charge.
Inventors
- 👤 Gilbert F. Amelio
- 👤 Kamleshwar C. Gunsagar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
G; G11; G11C; G11C7/00; G11C19/00; G11C19/28; G11C19/282; G11C19/285; G11C19/287; G11C8/00; G11C8/06; G11C8/08; G11C8/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
164 words
A line-addressable random-access memory, comprising: a plurality of lines of charge storage elements; means for introducing charge representing binary information to the beginning of particular ones of said plurality of lines of charge storage elements which are addressed; at least one data clock signal means to effect the transfer of charge along those lines of said charge storage elements which are addressed; an address-selection matrix, including a plurality of line drivers corresponding on a one-to-one basis to said plurality of lines of charge storage elements, electrically coupled between said data clock signal means and said lines to permit the addressed ones of said lines to be clocked while the unaddressed lines are maintained in a definite state; charge sensor means for receiving charge from said addressed lines and, in response thereto, generating a signal which represents the data signified by said charge; and recirculation means for recirculating a refreshed representation of said charge from said charge sensor means to said means for introducing charge.
Claim 2
Dependent Claim
164 words
A line-addressable random-access memory, comprising: a plurality of lines of charge storage elements; means for introducing charge representing binary information to the beginning of particular ones of said plurality of lines of charge storage elements which are addressed; at least one data clock signal means to effect the transfer of charge along those lines of said charge storage elements which are addressed; an address-selection matrix, including a plurality of line drivers corresponding on a one-to-one basis to said plurality of lines of charge storage elements, electrically coupled between said data clock signal means and said lines to permit the addressed ones of said lines to be clocked while the unaddressed lines are maintained in a definite state; charge sensor means for receiving charge from said addressed lines and, in response thereto, generating a signal which represents the data signified by said charge; and recirculation means for recirculating a refreshed representation of said charge from said charge sensor means to said means for introducing charge.
Claim 3
Dependent Claim
25 words
A line-addressable random-access memory as recited in claim 1 wherein each of said charge storage elements in said lines comprises a single transistor memory cell.
Claim 4
Dependent Claim
21 words
A line-addressable random-access memory as recited in claim 1 wherein said lines of charge storage elements comprise lines of charge-coupled elements.
Claim 5
Dependent Claim
19 words
A line-addressable random-access memory as recited in claim 3 wherein said lines of charge-coupled elements comprise uniphase charge-coupled lines.
Claim 6
Dependent Claim
21 words
A line-addressable random-access memory as recited in claim 4 wherein said lines of charge-coupled elements are fabricated in a p-type substrate.
Claim 7
Dependent Claim
22 words
A line-addressable random-access memory as recited in claim 5 wherein the dynamic electrode is held at a high potential in unaddressed lines.
Claim 8
Dependent Claim
39 words
A line-addressable random-access memory as recited in claim 4 wherein said plurality of lines of charge-coupled elements consist of four groups of lines with each group having 32 lines of charge-coupled elements and a reference line of charge-coupled elements.
Claim 9
Dependent Claim
25 words
A line-addressable random-access memory as recited in claim 1 wherein each of said plurality of lines of charge storage elements comprises and MOS shift register.
References Cited (Backward Citations)
US3889245A
Cited
US3859640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |