US3376385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous transmitter-receiver
Assignee: International Business Machines Corp
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Filing: 1964-05-15
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Granted: 1968-04-02
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Expires: 1984-05-15
Abstract
No abstract record available.
Inventors
- 👤 Roy J Smith
- 👤 Lawrence A Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:43
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/02; H04L7/033; H04L7/0331
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
APPARATUS FOR MAINTAINING A RECEIVER DATA BIT SAMPLING STROBE IN THE CENTER OF TRANSMITTED DATA BIT SIGNALS HAVING A PREDETERMINED BIT RATE AND TIME RELATIONSHIP TO REPRESENT DATA CHARACTERS COMPRISING, A SOURCE OF INPUT PULSES, FREQUENCY DIVIDER MEANS FOR RECEIVING SAID INPUT PULSES TO NORMALLY GENERATE SAID STROBE PULSES AFTER A PREDETERMINED NUMBER OF INPUT PULSES EQUAL TO THE BIT RATE OF SAID DATA BIT SIGNALS, A PLURAL STAGE COUNTING MEANS ADAPTED TO SELECTIVELY COUNT SAID INPUT PULSES, COUNT CONTROLLING MEANS RESPONSIVE TO SAID RECEIVED DATA BIT SIGNALS AND SAID STROBE PULSES FOR CAUSING SAID COUNTER TO COUNT SAID INPUT PULSES DURING A PORTION OF A MARK SIGNAL AND A PORTION OF A SPACE SIGNAL, MEANS RESPONSIVE TO SAID COUNTING MEANS FOR INDICATING THE RELATIVE POSITION OF SAID STROBE PULSES TO SAID RECEIVED DATA BIT SIGNALS, AND CORRECTING MEANS RESPONSIVE TO SAID COUNT RESPONSIVE MEANS FOR SELECTIVELY ADVANCING THE STROBE OUTPUT OF SAID DIVIDER MEANS WITH RESPECT TO THE NORMAL OUTPUT.
Claim 2
Dependent Claim
161 words
APPARATUS FOR MAINTAINING A RECEIVER DATA BIT SAMPLING STROBE IN THE CENTER OF TRANSMITTED DATA BIT SIGNALS HAVING A PREDETERMINED BIT RATE AND TIME RELATIONSHIP TO REPRESENT DATA CHARACTERS COMPRISING, A SOURCE OF INPUT PULSES, FREQUENCY DIVIDER MEANS FOR RECEIVING SAID INPUT PULSES TO NORMALLY GENERATE SAID STROBE PULSES AFTER A PREDETERMINED NUMBER OF INPUT PULSES EQUAL TO THE BIT RATE OF SAID DATA BIT SIGNALS, A PLURAL STAGE COUNTING MEANS ADAPTED TO SELECTIVELY COUNT SAID INPUT PULSES, COUNT CONTROLLING MEANS RESPONSIVE TO SAID RECEIVED DATA BIT SIGNALS AND SAID STROBE PULSES FOR CAUSING SAID COUNTER TO COUNT SAID INPUT PULSES DURING A PORTION OF A MARK SIGNAL AND A PORTION OF A SPACE SIGNAL, MEANS RESPONSIVE TO SAID COUNTING MEANS FOR INDICATING THE RELATIVE POSITION OF SAID STROBE PULSES TO SAID RECEIVED DATA BIT SIGNALS, AND CORRECTING MEANS RESPONSIVE TO SAID COUNT RESPONSIVE MEANS FOR SELECTIVELY ADVANCING THE STROBE OUTPUT OF SAID DIVIDER MEANS WITH RESPECT TO THE NORMAL OUTPUT.
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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |