US3432619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Random-access communication system employing pseudo-random signals
Assignee: International Business Machines Corp
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Filing: 1963-07-31
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Granted: 1969-03-11
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Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 Herman L Blasbalg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/18; H04W88/185; H04W88/187; H04B; H04B14/00; H04B14/02; H04J; H04J13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A MULTIPLE-SUBSCRIBED, RANDOM-ACCESS COMMUNICATION SYSTEM, WHEREIN EACH SUBSCRIBER IS ASIGNED A QUASIORTHOGONAL, PSEUDO-RANDOM, SIGNAL WAVEFORM, COMPRISING: A PLURALITY OF TRANSCEIVERS, ONE FOR EACH SUBSCRIBER, EACH TRANSCEIVER INCLUDING AT LEAST ONE PSEUDO-RANDOM SIGNAL WAVEFORM RECOGNITION DEVICE RESPONSIVE ONLY TO THE PSEUDO-RANDOM SEQUENCE OF SIGNALS WHICH IDENTIFY THE PORTION OF AN M-SEQUENCE ALLOCATED TO SAID TRANSCEIVER ASSOCIATED WITH SAID SUBSCRIBER; AND MEANS AT EACH TRANSCEIVER FOR ASYNCHRONOUSLY ENCODING ANY MESSAGE DESTINED FOR ONE OF SAID SUBSCRIBERS IN TERMS OF A PORTION OF SAID M-SEQUENCE TO WHICH THE SIGNAL RECOGNITION DEVICE AT THAT SUBSCRIBER IS RESPONSIVE.
Claim 2
Dependent Claim
93 words
A MULTIPLE-SUBSCRIBED, RANDOM-ACCESS COMMUNICATION SYSTEM, WHEREIN EACH SUBSCRIBER IS ASIGNED A QUASIORTHOGONAL, PSEUDO-RANDOM, SIGNAL WAVEFORM, COMPRISING: A PLURALITY OF TRANSCEIVERS, ONE FOR EACH SUBSCRIBER, EACH TRANSCEIVER INCLUDING AT LEAST ONE PSEUDO-RANDOM SIGNAL WAVEFORM RECOGNITION DEVICE RESPONSIVE ONLY TO THE PSEUDO-RANDOM SEQUENCE OF SIGNALS WHICH IDENTIFY THE PORTION OF AN M-SEQUENCE ALLOCATED TO SAID TRANSCEIVER ASSOCIATED WITH SAID SUBSCRIBER; AND MEANS AT EACH TRANSCEIVER FOR ASYNCHRONOUSLY ENCODING ANY MESSAGE DESTINED FOR ONE OF SAID SUBSCRIBERS IN TERMS OF A PORTION OF SAID M-SEQUENCE TO WHICH THE SIGNAL RECOGNITION DEVICE AT THAT SUBSCRIBER IS RESPONSIVE.
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) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |