US3337855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission control unit
Assignee: International Business Machines Corp
•
Filing: 1964-06-30
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Granted: 1967-08-22
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Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 William H Richard
- 👤 Louis A Mitta
- 👤 Loizides Edward
- 👤 Mackie David
- 👤 John R Carthew
- 👤 Jr Leo T O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:01
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/10; G06F13/12; G06F13/14; G06F13/20; G06F13/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A TRANSMISSION CONTROL UNIT COMPRISING: CONTROL MEANS FOR STORING DATA BITS IN A RECIRCULATING, MEMORY INCLUDING MEANS FOR SHIFTING THE BITS SO STORED; AN ACCESS REGISTER PROVIDING ACCESS TO DATA BITS STORED IN SAID MEMORY AT ANY ONE OF SELECTABLE BIT TIMES; TERMINAL CONTROL MEANS INCLUDING AN INDICATION AS TO THE LENGTH OF A CHARACTER ASSOCIATED WITH A PARTICULAR COMMUNICATION TERMINAL; LINE ADAPTER MEANS FOR BUFFERING ONE BIT OF DATA BETWEEN SAID RECIRCULATING STORE AND SAID COMMUNICATION TERMINAL; MEANS RESPONSIVE TO SAID TERMINAL CONTROL MEANS FOR READING DATA BITS OUT OF SAID RECIRCULATING MEMORY TO SAID LINE ADAPTER BUFFER AT A SELECTED ONE OF SAID BIT TIMES DEPENDING UPON THE CHARACTER CODE LENGTH OF THE TERMINAL TYPE ASSOCIATED WITH SAID TERMINAL CONTROL; AND MEANS FOR ENERGIZING SAID SHIFTING MEANS IN SAID CONTROL MEANS EACH TIME A DATA BIT IS TRANSMITTED TO THE COMMUNICATIONS TERMINAL.
Claim 2
Dependent Claim
144 words
A TRANSMISSION CONTROL UNIT COMPRISING: CONTROL MEANS FOR STORING DATA BITS IN A RECIRCULATING, MEMORY INCLUDING MEANS FOR SHIFTING THE BITS SO STORED; AN ACCESS REGISTER PROVIDING ACCESS TO DATA BITS STORED IN SAID MEMORY AT ANY ONE OF SELECTABLE BIT TIMES; TERMINAL CONTROL MEANS INCLUDING AN INDICATION AS TO THE LENGTH OF A CHARACTER ASSOCIATED WITH A PARTICULAR COMMUNICATION TERMINAL; LINE ADAPTER MEANS FOR BUFFERING ONE BIT OF DATA BETWEEN SAID RECIRCULATING STORE AND SAID COMMUNICATION TERMINAL; MEANS RESPONSIVE TO SAID TERMINAL CONTROL MEANS FOR READING DATA BITS OUT OF SAID RECIRCULATING MEMORY TO SAID LINE ADAPTER BUFFER AT A SELECTED ONE OF SAID BIT TIMES DEPENDING UPON THE CHARACTER CODE LENGTH OF THE TERMINAL TYPE ASSOCIATED WITH SAID TERMINAL CONTROL; AND MEANS FOR ENERGIZING SAID SHIFTING MEANS IN SAID CONTROL MEANS EACH TIME A DATA BIT IS TRANSMITTED TO THE COMMUNICATIONS TERMINAL.
References Cited (Backward Citations)
US3029414A
Cited
US3202972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |