US3191012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory readout and summing system
Assignee: International Business Machines Corp
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Filing: 1961-08-24
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Granted: 1965-06-22
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Expires: 1981-08-24
Abstract
No abstract record available.
Inventors
- 👤 Fleisher Harold
- 👤 Robert I Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
G; G11; G11C; G11C15/00; G11C15/06; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/829
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
257 words
A MEMORY READOUT AND ADDING SYSTEM COMPRISING, IN COMBINATION, A MEMORY CONSISTING OF NXM STORAGE MEANS ARRANGED IN N WORD ROWS AND M BIT COLUMNS AND SETTABLE SELECTIVELY TO OPPOSITE BINARY STATES, READOUT MEANS ASSOCIATED WITH EACH SAID STORAGE MEANS AND OPERABLE BY A READOUT SIGNAL APPLIED THERETO TO PRODUCE AN OUTPUT SIGNAL ON A FIRST OUTPUT LINE WHEN THE CORRESPONDING SAID STORAGE MEANS IS IN ONE BINARY STATE AND ON A SECOND OUTPUT LINE WHEN THE CORRESPONDING SAID STORAGE MEANS IS IN THE OPPOSITE BINARY STATE, MEANS CONNECTING SAID READOUT MEANS OF EACH SAID STORAGE MEANS AFTER THE FIRST STORAGE MEANS IN EACH SAID COLUMN TO SAID FIRST OUTPUT LINE OF THE PRECEDING STORAGE MEANS IN THE SAME COLUMN, AN M ORDER BINARY ACCUMULATOR ARRANGED IN SAID M COLUMNS, EACH SAID ORDER OPERABLE TO STORE A FIRST BINARY DIGIT IN A FIRST STORAGE ELEMENT, TO RECEIVE A SECOND BINARY DIGIT IN A SECOND STORAGE ELEMENT, TO ADD SAID FIRST AND SECOND BINARY DIGITS STORING THE BINARY SUM IN A THIRD STORAGE ELEMENT AND PROPAGATING A BINARY DIGIT CARRY IN ACCORDANCE WITH SAID SUM, MEANS COMMON CONNECTING SAID SECOND OUTPUT LINES OF ALL SAID STORAGE MEANS IN EACH SAID COLUMN TO AN INPUT TERMINAL OF SAID SECOND STORAGE ELEMENT OF A CORRESPONDING ORDER OF SAID ACCUMULATOR WHEREBY EACH SIGNAL ON SAID COMMON CONNECTING MEANS ENTERS A COUNT IN THE CORRESPONDING ORDER OF SAID ACCUMULATOR,BINARY CARRY REGISTERS CORRESPONDING TO EACH ORDER OF SAID ACCUMULATOR, EACH SAID CARRY REGISTER ARRANGED IN SAID COLUMN CORRESPONDING TO THE NEXT HIGHER ORDER
References Cited (Backward Citations)
GB841277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |