US3231674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for the suppression of noise in transmission systems
Assignee: International Standard Electric Corp
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Filing: 1962-04-25
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Granted: 1966-01-25
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Expires: 1982-04-25
Abstract
No abstract record available.
Inventors
- 👤 Boyer Roland Aime Raymond
- 👤 Chatelon Andre Edouard Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:35
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H04B14/046; H04J; H04J3/00; H04J3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A TRANSMISSION SYSTEM COMPRISING: A SOURCE OF SIGNAL INCLUDING VARYING VOLTAGE HAVING AN AVERAGE VALUE VARYING ABOUT A REFERENCE LEVEL AND A NOISE VOLTAGE SUPERIMPOSED ON SAID VARYING VOLTAGE; A CODER COUPLED TO SAID SOURCE TO SAMPLE SAID SIGNAL AT GIVEN INTERVALS, TO QUANTIZE THE AMPLITUDE OF SAID SIGNALS, AND TO DELIVER A GROUP OF CODE PULSES REPRESENTING EACH QUANTIZED SAMPLE; A DECODER RESPONSIVE TO GROUPS OF CODE PULSES TO REPRODUCE SAID VARYING VOLTAGE; AND NOISE SUPPRESSING MEANS COUPLED IN A SERIES RELATIONSHIP BETWEEN SAID CODER AND SAID DECODER INCLUDING: MEANS RESPONSIVE TO SAID GROUPS OF CODE PULSES TO RECOGNIZE THE GROUPS OF CODE PULSES REPRESENTING A PREDETERMINED NUMBER OF QUANTIZATION LEVELS SPACED FROM SAID REFERENCE LEVEL; AND MEANS COUPLED TO SAID MEANS RESPONSIVE TO TRANSMIT SAID GROUPS OF CODE PULSES IF THEY DO NOT REPRESENT SAID PREDETERMINED NUMBER OF QUANTIZATION LEVELS AND A GROUP OF CODE PULSES REPRESENTING SAID REFERENCE LEVEL IF SAID GROUPS OF CODE PULSES DO REPRESENT SAID PREDETERMINED NUMBER OF QUANTIZATION LEVELS.
Claim 2
Dependent Claim
166 words
A TRANSMISSION SYSTEM COMPRISING: A SOURCE OF SIGNAL INCLUDING VARYING VOLTAGE HAVING AN AVERAGE VALUE VARYING ABOUT A REFERENCE LEVEL AND A NOISE VOLTAGE SUPERIMPOSED ON SAID VARYING VOLTAGE; A CODER COUPLED TO SAID SOURCE TO SAMPLE SAID SIGNAL AT GIVEN INTERVALS, TO QUANTIZE THE AMPLITUDE OF SAID SIGNALS, AND TO DELIVER A GROUP OF CODE PULSES REPRESENTING EACH QUANTIZED SAMPLE; A DECODER RESPONSIVE TO GROUPS OF CODE PULSES TO REPRODUCE SAID VARYING VOLTAGE; AND NOISE SUPPRESSING MEANS COUPLED IN A SERIES RELATIONSHIP BETWEEN SAID CODER AND SAID DECODER INCLUDING: MEANS RESPONSIVE TO SAID GROUPS OF CODE PULSES TO RECOGNIZE THE GROUPS OF CODE PULSES REPRESENTING A PREDETERMINED NUMBER OF QUANTIZATION LEVELS SPACED FROM SAID REFERENCE LEVEL; AND MEANS COUPLED TO SAID MEANS RESPONSIVE TO TRANSMIT SAID GROUPS OF CODE PULSES IF THEY DO NOT REPRESENT SAID PREDETERMINED NUMBER OF QUANTIZATION LEVELS AND A GROUP OF CODE PULSES REPRESENTING SAID REFERENCE LEVEL IF SAID GROUPS OF CODE PULSES DO REPRESENT SAID PREDETERMINED NUMBER OF QUANTIZATION LEVELS.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |