US3312950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffer system with each channel transferring to a specified memory location, said location storing indication of next channel to be serviced
Assignee: RCA Corp
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Filing: 1964-05-28
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Granted: 1967-04-04
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Hillman
- 👤 Robert H G Chan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:20
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/14; G06F13/20; G06F13/22; H; H04; H04L; H04L12/00; H04L12/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
233 words
A SYSTEM FOR CYCLICALLY ADDRESSING ALL OF MANY WORD LOCATIONS IN A MEMORY AT LEAST ONCE DURING A COMPLETE CYCLE, SAID WORD LOCATIONS INCLUDING MOST FREQUENTLY ACCESSED LOCATIONS AND LEAST FREQUENTLY ACCESSED LOCATIONS, SAID LOCATIONS BEING DIVIDED FOR PURPOSES OF DESCRIPTION INTO SUBSCAN GROUPS EACH INCLUDING ALL OF THE MOST FREQUENTLY ACCESSED LOCATIONS AND SOME OF THE LESS FREQUENTLY ACCESSED LOCATIONS, EACH LEAST FREQUENTLY ACCESSED LOCATION BEING INCLUDED IN ONLY ONE OF SAID SUBSCAN GROUPS, EACH OF SAID WORD LOCATIONS INCLUDING SPACE FOR THE STORAGE OF SCAN CONTROL INFORMATION GIVING THE ADDRESS OF THE NEXT WORD LOCATION IN THE SAME SUBSCAN, COMPRISING MEANS INCLUDING AN ADDRESS REGISTER, AN END OF SUBSCAN FLIP-FLOP AND A LAST SUBSCAN FLIP-FLOP FOR SEQUENTIALLY ADDRESSING THE WORD LOCATIONS, MEANS OPERATIVE DURING THE ACCESS OF A WORD FOR ACCEPTING THE SCAN CONTROL PORTION THEREOF AND STORING IT IN SAID ADDRESS REGISTER FOR USE IN ADDRESSING THE NEXT WORD IN THE SAME SUBSCAN, DECODER MEANS OPERATIVE DURING THE ACCESS OF THE PENULTIMATE WORD INCLUDED IN ALL SUBSCANS FOR RECOGNIZING THE SCAN CONTROL PORTION THEREOF, AND SETTING SAID END OF SUBSCAN FLIP-FLOP FOR USE DURING THE NEXT ACCESS IN DIRECTLY ADDRESSING THE LAST WORD INCLUDED IN ALL SUBSCANS, MEANS RESPONSIVE TO THE SET CONDITION OF SAID END OF SUBSCAN FLIP-FLOP AND OPERATIVE DURING THE DIRECTLY-ADDRESSED ACCESS OF THE LAST WORD INCLUDED IN ALL SUBSCANS FOR INCREMENTING THE SCAN CONTROL PORTION THERE-
Claim 2
Independent Claim
233 words
A SYSTEM FOR CYCLICALLY ADDRESSING ALL OF MANY WORD LOCATIONS IN A MEMORY AT LEAST ONCE DURING A COMPLETE CYCLE, SAID WORD LOCATIONS INCLUDING MOST FREQUENTLY ACCESSED LOCATIONS AND LEAST FREQUENTLY ACCESSED LOCATIONS, SAID LOCATIONS BEING DIVIDED FOR PURPOSES OF DESCRIPTION INTO SUBSCAN GROUPS EACH INCLUDING ALL OF THE MOST FREQUENTLY ACCESSED LOCATIONS AND SOME OF THE LESS FREQUENTLY ACCESSED LOCATIONS, EACH LEAST FREQUENTLY ACCESSED LOCATION BEING INCLUDED IN ONLY ONE OF SAID SUBSCAN GROUPS, EACH OF SAID WORD LOCATIONS INCLUDING SPACE FOR THE STORAGE OF SCAN CONTROL INFORMATION GIVING THE ADDRESS OF THE NEXT WORD LOCATION IN THE SAME SUBSCAN, COMPRISING MEANS INCLUDING AN ADDRESS REGISTER, AN END OF SUBSCAN FLIP-FLOP AND A LAST SUBSCAN FLIP-FLOP FOR SEQUENTIALLY ADDRESSING THE WORD LOCATIONS, MEANS OPERATIVE DURING THE ACCESS OF A WORD FOR ACCEPTING THE SCAN CONTROL PORTION THEREOF AND STORING IT IN SAID ADDRESS REGISTER FOR USE IN ADDRESSING THE NEXT WORD IN THE SAME SUBSCAN, DECODER MEANS OPERATIVE DURING THE ACCESS OF THE PENULTIMATE WORD INCLUDED IN ALL SUBSCANS FOR RECOGNIZING THE SCAN CONTROL PORTION THEREOF, AND SETTING SAID END OF SUBSCAN FLIP-FLOP FOR USE DURING THE NEXT ACCESS IN DIRECTLY ADDRESSING THE LAST WORD INCLUDED IN ALL SUBSCANS, MEANS RESPONSIVE TO THE SET CONDITION OF SAID END OF SUBSCAN FLIP-FLOP AND OPERATIVE DURING THE DIRECTLY-ADDRESSED ACCESS OF THE LAST WORD INCLUDED IN ALL SUBSCANS FOR INCREMENTING THE SCAN CONTROL PORTION THERE-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |