Patent US3564414A successfully refreshed from Google Patents.
US3564414A
Expired / Lapsed
US
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Digital data rate converter using stuffed pulses
Assignee: AT&T Inc
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Filing: 1969-03-28
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Granted: 1971-02-16
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Expires: 1989-03-28
Abstract
Abstract A DIGITAL TRANSMISSION SYSTEM DESIGNED TO OPERATE AT ONE RATE IS ADAPTED TO TRANSMIT DATA AT ANOTHER RATE WITHOUT ALTERING THE TRANSMISSION FACILITY, PROVIDED THE DATA SOURCE RATE IS LOWER THAN THE TRANSMISSION RATE. THE ARRANGEMENT IS SUCH THAT DATA BITS ARE SAMPLED ONCE ONLY. WHERE MULTIPLE SAMPLES WOULD OTHERWISE HAVE OCCURRED, A PREDETERMINED PULSE SEQUENCE IS INTERLEAVED WITH THE DATA SAMPLES TO MAINTAIN SYNCHRONISM.
Inventors
- 👤 Paul M Ebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:28
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/22; H04L5/24; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/07
Claims Analysis
Total Claims: 0
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |