US3480948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-linear coder
Assignee: International Standard Electric Corp
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Filing: 1966-12-12
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Granted: 1969-11-25
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Michael Robert Lord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
H; H03; H03M; H03M1/00; H04; H04J; H04J3/00; H04J3/18; H03M1/10; H03M1/1009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A NON-LINEAR CODER FOR PULSE AMPLITUDE MODIULATION (PAM) SIGNALS COMPRISING: A SOURCE OF PAM SIGNALS DISPOSED IN SEQUENTIAL TIME SLOTS; A CAPACITOR; FIRST MEANS FOR COUPLING SAID SOURCE TO SAID CAPACITOR FOR CHARGING THEREOF TO A VALUE PROPORTIONAL TO THE AMPLITUDE OF ONE OF SAID PAM SIGNALS IN A GIVEN ONE OF SAID TIME SLOTS; SECOND MEANS COUPLED TO SAID CAPACITOR FOR DISCHARGE THEREOF AT A PREDETERMINED CONSTANT RATE; COUNTING MEANS FOR PRODUCING CONTROL SIGNALS AT PREDETERMINED SPACED TIME INTERVALS; THIRD MEANS COUPLED TO SAID SECOND MEANS AND SAID COUNTING MEANS RESPONSIVE TO SAID CONTROL SIGNALS TO ALTER SAID PREDETERMINED DICHARGE RATE TO DIFFERENT VALUES; FOURTH MEANS COUPLED TO SAID CAPACITOR AND SAID COUNTER FOR DETERMINING THE INSTANT THE CHARGE ON SAID CAPACITOR IS ZERO AND FOR STOPPING SAID COUNTING MEANS AT SAID INSTANT; FIFTH MEANS COUPLED TO SAID COUNTING MEANS FOR GENERATING A CODE SIGNAL INDICATIVE OF THE SETTING OF SAID COUNTING MEANS AT SAID INSTANT; AND SIXTH MEANS COUPLED TO SAID COUNTING MEANS FOR RESETTING THEREOF IN PREPARATION FOR REPEATING THE SEQUENCE OF OPERATIONS FOR THE NEXT SUCCEEDING ONE OF SAID PAM SIGNALS.
Claim 2
Dependent Claim
185 words
A NON-LINEAR CODER FOR PULSE AMPLITUDE MODIULATION (PAM) SIGNALS COMPRISING: A SOURCE OF PAM SIGNALS DISPOSED IN SEQUENTIAL TIME SLOTS; A CAPACITOR; FIRST MEANS FOR COUPLING SAID SOURCE TO SAID CAPACITOR FOR CHARGING THEREOF TO A VALUE PROPORTIONAL TO THE AMPLITUDE OF ONE OF SAID PAM SIGNALS IN A GIVEN ONE OF SAID TIME SLOTS; SECOND MEANS COUPLED TO SAID CAPACITOR FOR DISCHARGE THEREOF AT A PREDETERMINED CONSTANT RATE; COUNTING MEANS FOR PRODUCING CONTROL SIGNALS AT PREDETERMINED SPACED TIME INTERVALS; THIRD MEANS COUPLED TO SAID SECOND MEANS AND SAID COUNTING MEANS RESPONSIVE TO SAID CONTROL SIGNALS TO ALTER SAID PREDETERMINED DICHARGE RATE TO DIFFERENT VALUES; FOURTH MEANS COUPLED TO SAID CAPACITOR AND SAID COUNTER FOR DETERMINING THE INSTANT THE CHARGE ON SAID CAPACITOR IS ZERO AND FOR STOPPING SAID COUNTING MEANS AT SAID INSTANT; FIFTH MEANS COUPLED TO SAID COUNTING MEANS FOR GENERATING A CODE SIGNAL INDICATIVE OF THE SETTING OF SAID COUNTING MEANS AT SAID INSTANT; AND SIXTH MEANS COUPLED TO SAID COUNTING MEANS FOR RESETTING THEREOF IN PREPARATION FOR REPEATING THE SEQUENCE OF OPERATIONS FOR THE NEXT SUCCEEDING ONE OF SAID PAM SIGNALS.
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |