US3308440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory system
Assignee: Electronic Associates Inc
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Filing: 1964-01-21
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Granted: 1967-03-07
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Expires: 1984-01-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Truitt
- 👤 Donald F Fraipont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:41
CPC Classifications
G; G11; G11C; G11C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A DYNAMIC MEMORY SYSTEM FOR SERIALLY RECIRCULATING DIGITAL WORDS ARRANGED SEQUENTIALLY IN TIME, EACH WORD BEING FORMED OF A PLURALITY OF BITS ARRANGED SEQUENTIALLY IN TIME, CERTAIN OF SAID BITS BEING FLAG BITS, SAID SYSTEM COMPRISING: MEANS FOR DELAYING EACH OF SAID WORDS BY A PREDETERMINED DELAY PERIOD, INPUT MEANS FOR SELECTIVELY APPLYING WORDS AND FOR SELECTIVELY INTRODUCING PREDETERMINED FLAG BITS AT DESIRED WORD TIMES TO AN INPUT CIRCUIT OF SAID DELAYING MEANS, MEANS CONNECTED TO AN OUTPUT CIRCUIT OF SAID DELAYING MEANS FOR SEQUENTIALLY RECIRCULATING SAID WORDS TO SAID INPUT CIRCUIT, FLAG SELECT MEANS CONNECTED TO SAID RECIRCULATING MEANS AND OPERABLE IN RESPONSE TO THE FLAG BITS INCLUDED IN SAID WORDS APPEARING AT SAID OUTPUT CIRCUIT FOR SELECTING FOR READ OUT ANY WORD WHICH INCLUDES A PREDETERMINED FLAG BIT, SAID FLAG SELECT MEANS INCLUDING MEANS RESPONSIVE TO THE CORRESPONDENCE IN BIT TIME OF A FLAG BIT INCLUDED IN A WORD AND SAID BIT APPLIED TO SAID FLAG SELECT MEANS FOR PRODUCING AN OUTPUT SIGNAL INDICATING THAT SAID WORD APPEARING AT SAID OUTPUT CIRCUIT IS A SELECTED WORD, AND ADVANCE FLAG MEANS CONNECTED TO SAID FLAG SELECT MEANS AND RESPONSIVE TO SAID OUTPUT SIGNAL FOR ADVANCING A FLAG BIT FROM ITS BIT POSITION IN A WORD TO A CORRESPONDING BIT POSITION IN THE NEXT SUCCEEDING WORD.
Claim 2
Dependent Claim
216 words
A DYNAMIC MEMORY SYSTEM FOR SERIALLY RECIRCULATING DIGITAL WORDS ARRANGED SEQUENTIALLY IN TIME, EACH WORD BEING FORMED OF A PLURALITY OF BITS ARRANGED SEQUENTIALLY IN TIME, CERTAIN OF SAID BITS BEING FLAG BITS, SAID SYSTEM COMPRISING: MEANS FOR DELAYING EACH OF SAID WORDS BY A PREDETERMINED DELAY PERIOD, INPUT MEANS FOR SELECTIVELY APPLYING WORDS AND FOR SELECTIVELY INTRODUCING PREDETERMINED FLAG BITS AT DESIRED WORD TIMES TO AN INPUT CIRCUIT OF SAID DELAYING MEANS, MEANS CONNECTED TO AN OUTPUT CIRCUIT OF SAID DELAYING MEANS FOR SEQUENTIALLY RECIRCULATING SAID WORDS TO SAID INPUT CIRCUIT, FLAG SELECT MEANS CONNECTED TO SAID RECIRCULATING MEANS AND OPERABLE IN RESPONSE TO THE FLAG BITS INCLUDED IN SAID WORDS APPEARING AT SAID OUTPUT CIRCUIT FOR SELECTING FOR READ OUT ANY WORD WHICH INCLUDES A PREDETERMINED FLAG BIT, SAID FLAG SELECT MEANS INCLUDING MEANS RESPONSIVE TO THE CORRESPONDENCE IN BIT TIME OF A FLAG BIT INCLUDED IN A WORD AND SAID BIT APPLIED TO SAID FLAG SELECT MEANS FOR PRODUCING AN OUTPUT SIGNAL INDICATING THAT SAID WORD APPEARING AT SAID OUTPUT CIRCUIT IS A SELECTED WORD, AND ADVANCE FLAG MEANS CONNECTED TO SAID FLAG SELECT MEANS AND RESPONSIVE TO SAID OUTPUT SIGNAL FOR ADVANCING A FLAG BIT FROM ITS BIT POSITION IN A WORD TO A CORRESPONDING BIT POSITION IN THE NEXT SUCCEEDING WORD.
References Cited (Backward Citations)
US3017610A
Cited
US3229258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |