US3261986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital code regenerative relay transmission system
Assignee: Fujitsu Ltd
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Filing: 1963-04-19
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Granted: 1966-07-19
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Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
- 👤 Kawashima Masao
- 👤 Higeta Tsukumo
- 👤 Miki Atushi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:20
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/20; H04L25/24; H04L25/242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A REGENERATIVE RELAY SYSTEM FOR TRANSMITTING DIGITAL CODE PULSES COMPRISING AN INPUT TRANSFORMER FOR NOISEEFFECTED CODE PULSES, A DIFFERENTIATING PULSE PRE-SHAPING CIRCUIT CONNECTED TO SAID INPUT TRANSFORMER AND HAVING A PULSE OUTPUT CHARACTERISTIC OF THE DIFFERENTIATED ORTHOGONAL TYPE AND HAVING A SLOPE HAVING A DIFFERENTIAL COSINESQUARED CHARACTERISTIC, AN OUTPUT TRANSFORMER, A WAVESHAPE REGENERATING STAGE CONNECTING SAID OUTPUT TRANSFORMER WITH SAID PULSE PRE-SHAPING CIRCUIT AND INCLUDING A TIMING CIRCUIT, AND MEANS FOR SUPPLYING TO SAID TIMING CIRCUIT A TIMING WAVE OF A GIVEN PHASE RELATION TO THE PULSES TO BE GENERATED.
Claim 2
Dependent Claim
90 words
A REGENERATIVE RELAY SYSTEM FOR TRANSMITTING DIGITAL CODE PULSES COMPRISING AN INPUT TRANSFORMER FOR NOISEEFFECTED CODE PULSES, A DIFFERENTIATING PULSE PRE-SHAPING CIRCUIT CONNECTED TO SAID INPUT TRANSFORMER AND HAVING A PULSE OUTPUT CHARACTERISTIC OF THE DIFFERENTIATED ORTHOGONAL TYPE AND HAVING A SLOPE HAVING A DIFFERENTIAL COSINESQUARED CHARACTERISTIC, AN OUTPUT TRANSFORMER, A WAVESHAPE REGENERATING STAGE CONNECTING SAID OUTPUT TRANSFORMER WITH SAID PULSE PRE-SHAPING CIRCUIT AND INCLUDING A TIMING CIRCUIT, AND MEANS FOR SUPPLYING TO SAID TIMING CIRCUIT A TIMING WAVE OF A GIVEN PHASE RELATION TO THE PULSES TO BE GENERATED.
References Cited (Backward Citations)
US2931860A
Cited
US2996578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |