US3378641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Redundancy-elimination system for transmitting each sample only if it differs from previously transmitted sample by pre-determined amount
Assignee: Lockheed Martin Corp
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Filing: 1965-10-15
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Granted: 1968-04-16
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Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Spyros G Varsos
- 👤 Jr William Taylor Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:38
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A COMMUNICATION SYSTEM, MEANS FOR REDUCING THE DEGREE OF REDUNDANCY IN THE INFORMATION TO BE TRANSMITTED COMPRISING: MEANS TO SAMPLE THE INFORMATION TO BE TRANSMITTED; A FIRST MEMORY TO STORE SIGNALS REPRESENTATIVE OF THE INFORMATION SAMPLES; A SECOND MEMORY TO STORE INFORMATION REPRESENTATIVE OF THE MOST RECENTLY TRANSMITTED INFORMATION; COMPARATOR MEANS TO PROVIDE AN INDICATION WHEN THE CONTENTS OF THE FIRST AND SECOND MEMORIES DIFFER BY MORE THAN A PREDETERMINED AMOUNT; TRANSMITTER MEANS; AND MEANS RESPONSIVE TO AN INDICATION OF THE PREDETERMINED DIFFERENCE TO PROVIDE THE TRANSMITTER MEANS AND THE SECOND MEMORY WITH SIGNALS REPRESENTATIVE OF THE CONTENTS OF THE FIRST MEMORY WHEREBY THE INFORMATION STORED IN THE FIRST MEMORY MAY BE TRANSMITTED AND INFORMATION REPRESENTATIVE OF THE TRANSMITTED INFORMATION MAY BE STORED IN THE SECOND MEMORY.
Claim 2
Dependent Claim
128 words
IN A COMMUNICATION SYSTEM, MEANS FOR REDUCING THE DEGREE OF REDUNDANCY IN THE INFORMATION TO BE TRANSMITTED COMPRISING: MEANS TO SAMPLE THE INFORMATION TO BE TRANSMITTED; A FIRST MEMORY TO STORE SIGNALS REPRESENTATIVE OF THE INFORMATION SAMPLES; A SECOND MEMORY TO STORE INFORMATION REPRESENTATIVE OF THE MOST RECENTLY TRANSMITTED INFORMATION; COMPARATOR MEANS TO PROVIDE AN INDICATION WHEN THE CONTENTS OF THE FIRST AND SECOND MEMORIES DIFFER BY MORE THAN A PREDETERMINED AMOUNT; TRANSMITTER MEANS; AND MEANS RESPONSIVE TO AN INDICATION OF THE PREDETERMINED DIFFERENCE TO PROVIDE THE TRANSMITTER MEANS AND THE SECOND MEMORY WITH SIGNALS REPRESENTATIVE OF THE CONTENTS OF THE FIRST MEMORY WHEREBY THE INFORMATION STORED IN THE FIRST MEMORY MAY BE TRANSMITTED AND INFORMATION REPRESENTATIVE OF THE TRANSMITTED INFORMATION MAY BE STORED IN THE SECOND MEMORY.
References Cited (Backward Citations)
US3213268A
Cited
US3173092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |