Patent US2888861A successfully refreshed from Google Patents.
US3284776A
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Data processing apparatus
Assignee: Decca Ltd
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Filing: 1962-09-28
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Granted: 1966-11-08
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Freedman Arye Leib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:17
CPC Classifications
G; G06; G06F; G06F12/00; G06F12/14; G06F12/1458; G06F12/1466; G06F13/00; G06F13/14; G06F13/20; G06F13/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
DATA PROCESSING APPARATUS HAVING A NUMBER OF ANCILLARY UNITS AND A CENTRAL PROCESSING UNIT FOR CARRYING OUT TWO OR MORE PROGRAMMES ON A TIME-SHARING BASIS WHEREIN THERE IS PROVIDED A CONTROL REGISTER STORING THE NUMBER OF THE PROGRAMME CURRENTLY BEING PERFORMED BY THE CENTRAL PROCESSING UNIT AND WHEREIN EACH ANCILLARY UNIT IS PROVIDED WITH A REGISTER STORING THE NUMBER OF THE PROGRAMME CURRENTLY ASSOCIATED WITH THAT ANCILLARY UNIT AND WHEREIN COMPARATOR MEANS ARE PROVIDED, OPERATIVE WHEN AN INSTRUCTION IS ABOUT TO BE PERFORMED INVOLVING THE TRANSFER OF INFORMATION FROM ONE ANCILLARY UNIT TO ANOTHER ANCILLARY UNIT OR THE TRANSFER OF INFORMATION TO OR FROM THE CENTRAL PROCESSING UNIT, WHICH COMPARATOR MEANS COMPARE THE NUMBERS IN THE REGISTERS OF THE ANCILLARY UNITS BETWEEN WHICH THE INFORMATION IS TO BE TRANSFERRED OR THE NUMBERS IN THE CONTROL REGISTER AND THE ANCILLARY REGISTER IF INFORMATION IS TO BE TRANSFERRED TO OR FROM THE CENTRAL PROCESSING UNIT, SAID COMPARATOR MEANS BEING ARRANGED TO INHIBIT THE TRANSFER OF INFORMATION UNLESS THE COMPARED NUMBERS AGREE.
Claim 2
Dependent Claim
169 words
DATA PROCESSING APPARATUS HAVING A NUMBER OF ANCILLARY UNITS AND A CENTRAL PROCESSING UNIT FOR CARRYING OUT TWO OR MORE PROGRAMMES ON A TIME-SHARING BASIS WHEREIN THERE IS PROVIDED A CONTROL REGISTER STORING THE NUMBER OF THE PROGRAMME CURRENTLY BEING PERFORMED BY THE CENTRAL PROCESSING UNIT AND WHEREIN EACH ANCILLARY UNIT IS PROVIDED WITH A REGISTER STORING THE NUMBER OF THE PROGRAMME CURRENTLY ASSOCIATED WITH THAT ANCILLARY UNIT AND WHEREIN COMPARATOR MEANS ARE PROVIDED, OPERATIVE WHEN AN INSTRUCTION IS ABOUT TO BE PERFORMED INVOLVING THE TRANSFER OF INFORMATION FROM ONE ANCILLARY UNIT TO ANOTHER ANCILLARY UNIT OR THE TRANSFER OF INFORMATION TO OR FROM THE CENTRAL PROCESSING UNIT, WHICH COMPARATOR MEANS COMPARE THE NUMBERS IN THE REGISTERS OF THE ANCILLARY UNITS BETWEEN WHICH THE INFORMATION IS TO BE TRANSFERRED OR THE NUMBERS IN THE CONTROL REGISTER AND THE ANCILLARY REGISTER IF INFORMATION IS TO BE TRANSFERRED TO OR FROM THE CENTRAL PROCESSING UNIT, SAID COMPARATOR MEANS BEING ARRANGED TO INHIBIT THE TRANSFER OF INFORMATION UNLESS THE COMPARED NUMBERS AGREE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |