US3339142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adaptive pulse transmission system with modified delta modulation and redundant pulse elimination
Assignee: Lockheed Martin Corp
•
Filing: 1963-07-01
•
Granted: 1967-08-29
•
Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Spyros G Varsos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:36
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H04B14/06; H04B14/062; H04B1/00; H04B1/38; H04B1/40; H04B1/44; H04B1/46; H04B1/66; H04J; H04J3/00; H04J3/16; H04J3/1682; H04J3/1688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A PULSE COMMUNICATION SYSTEM FOR TRANSMITTING SIGNALS REPRESENTING APPROXIMATELY A COMPLEX INPUT WAVEFORM COMPRISING MEANS FOR SAMPLING SUCH COMPLEX INPUT WAVEFORM, THEREBY GENERATING A LOCAL WAVEFORM SIMILAR TO SUCH COMPLEX WAVEFORM, FIRST COMPARISON MEANS FOR COMPARING THE AMPLITUDE OF SAID LOCAL WAVEFORM AND SAID COMPLEX INPUT WAVEFORM AND FOR GENERATING PULSES CONSTITUTING A FIRST PULSE STREAM REPRESENTATIVE OF THE RESULT OF SAID COMPARISON OF SAID WAVEFORMS, MEANS FOR GENERATING A TRANSMITTER REFERENCE WAVEFORM VARYING PERIODICALLY BETWEEN TWO AMPLITUDE LEVELS, SECOND COMPARISON MEANS FOR COMPARING SAID FIRST PULSE STREAM WITH SAID TRANSMITTER REFERENCE WAVEFORM, SAID SECOND COMPARISON MEANS INCLUDING MEANS FOR PRODUCING IN SAID COMPARISON OF SAID FIRST PULSE STREAM AND SAID REFERENCE WAVEFORM A SECOND PULSE STREAM DIFFERENT FROM SAID FIRST PULSE STREAM, REDUNDANT PULSE ELIMINATOR MEANS ARRANGED TO RECEIVE THE OUTPUT OF SAID SECOND COMPARISON MEANS, SAID ELIMINATOR SERVING TO ELIMINATE REDUNDANT PULSES FROM SAID SECOND PULSE STREAM, WHICH LATTER PULSES TEND TO OCCUR WHEN NO CHANGE IN AMPLITUDE OF SAID COMPLEX INPUT WAVEFORM IS REPRESENTED BY A SEQUENCE OF PULSES PRESENT,
Claim 2
Dependent Claim
173 words
A PULSE COMMUNICATION SYSTEM FOR TRANSMITTING SIGNALS REPRESENTING APPROXIMATELY A COMPLEX INPUT WAVEFORM COMPRISING MEANS FOR SAMPLING SUCH COMPLEX INPUT WAVEFORM, THEREBY GENERATING A LOCAL WAVEFORM SIMILAR TO SUCH COMPLEX WAVEFORM, FIRST COMPARISON MEANS FOR COMPARING THE AMPLITUDE OF SAID LOCAL WAVEFORM AND SAID COMPLEX INPUT WAVEFORM AND FOR GENERATING PULSES CONSTITUTING A FIRST PULSE STREAM REPRESENTATIVE OF THE RESULT OF SAID COMPARISON OF SAID WAVEFORMS, MEANS FOR GENERATING A TRANSMITTER REFERENCE WAVEFORM VARYING PERIODICALLY BETWEEN TWO AMPLITUDE LEVELS, SECOND COMPARISON MEANS FOR COMPARING SAID FIRST PULSE STREAM WITH SAID TRANSMITTER REFERENCE WAVEFORM, SAID SECOND COMPARISON MEANS INCLUDING MEANS FOR PRODUCING IN SAID COMPARISON OF SAID FIRST PULSE STREAM AND SAID REFERENCE WAVEFORM A SECOND PULSE STREAM DIFFERENT FROM SAID FIRST PULSE STREAM, REDUNDANT PULSE ELIMINATOR MEANS ARRANGED TO RECEIVE THE OUTPUT OF SAID SECOND COMPARISON MEANS, SAID ELIMINATOR SERVING TO ELIMINATE REDUNDANT PULSES FROM SAID SECOND PULSE STREAM, WHICH LATTER PULSES TEND TO OCCUR WHEN NO CHANGE IN AMPLITUDE OF SAID COMPLEX INPUT WAVEFORM IS REPRESENTED BY A SEQUENCE OF PULSES PRESENT,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |