US3278906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual channel mode
Assignee: Unisys Corp
•
Filing: 1963-04-01
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Granted: 1966-10-11
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Robert J Gountanis
- 👤 Osofsky Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:44
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/10; G06F13/12; G06F13/122; G06F13/14; G06F13/20; G06F13/24; G06F13/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN A DATA PROCESSING UNIT OF THE TYPE HAVING AN ADDRESSABLE MEMORY FOR STORING N BITS OF DATA AT EACH MEMORY ADDRESS, FIRST AND SECOND INPUT CHANNELS EACH HAVING N DATA SIGNAL PATHS, FIRST AND SECOND MEANS ASSOCIATED WITH SAID FIRST AND SECOND INPUT CHANNELS, RESPECTIVELY, FOR MANIFESTING INPUT REQUEST SIGNALS, PRIORITY CIRCUIT MEANS RESPONSIVE TO SAID INPUT REQUEST SIGNALS FOR GRANTING PRIORITY TO ONE OF SAID CHANNELS AND PRODUCING SIGNALS INDICATING THE CHANNEL GRANTED PRIORITY, AND TRANSFER CONTROL MEANS NORMALLY OPERATIVE IN RESPONSE TO SIGNALS FROM SAID PRIORITY CIRCUIT MEANS FOR STORING AT ONE OF SAID MEMORY ADDRESSES THE DATA PRESENT ON THE INPUT CHANNEL GRANTED PRIORITY, THE IMPROVEMENT COMPRISING: SELECTIVELY SETTABLE MODE CONTROL MEANS RESPONSIVE TO A PRIORITY SIGNAL INDICATING THAT SAID FIRST CHANNEL HAS BEEN GRANTED PRIORITY FOR PRODUCING A MODE CONTROL SIGNAL; AND MEANS RESPONSIVE TO SAID MODE CONTROL SIGNAL FOR APPLYING SIGNALS TO SAID TRANSFER CONTROL MEANS; SAID TRANSFER CONTROL MEANS INCLUDING MEANS RESPONSIVE TO SAID LAST NAMED SIG-
Claim 2
Dependent Claim
164 words
IN A DATA PROCESSING UNIT OF THE TYPE HAVING AN ADDRESSABLE MEMORY FOR STORING N BITS OF DATA AT EACH MEMORY ADDRESS, FIRST AND SECOND INPUT CHANNELS EACH HAVING N DATA SIGNAL PATHS, FIRST AND SECOND MEANS ASSOCIATED WITH SAID FIRST AND SECOND INPUT CHANNELS, RESPECTIVELY, FOR MANIFESTING INPUT REQUEST SIGNALS, PRIORITY CIRCUIT MEANS RESPONSIVE TO SAID INPUT REQUEST SIGNALS FOR GRANTING PRIORITY TO ONE OF SAID CHANNELS AND PRODUCING SIGNALS INDICATING THE CHANNEL GRANTED PRIORITY, AND TRANSFER CONTROL MEANS NORMALLY OPERATIVE IN RESPONSE TO SIGNALS FROM SAID PRIORITY CIRCUIT MEANS FOR STORING AT ONE OF SAID MEMORY ADDRESSES THE DATA PRESENT ON THE INPUT CHANNEL GRANTED PRIORITY, THE IMPROVEMENT COMPRISING: SELECTIVELY SETTABLE MODE CONTROL MEANS RESPONSIVE TO A PRIORITY SIGNAL INDICATING THAT SAID FIRST CHANNEL HAS BEEN GRANTED PRIORITY FOR PRODUCING A MODE CONTROL SIGNAL; AND MEANS RESPONSIVE TO SAID MODE CONTROL SIGNAL FOR APPLYING SIGNALS TO SAID TRANSFER CONTROL MEANS; SAID TRANSFER CONTROL MEANS INCLUDING MEANS RESPONSIVE TO SAID LAST NAMED SIG-
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |