US3213294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal level discriminator circuit with zener diode interrogated by bipolar pulses and biased by ternary input
Assignee: NEC Corp
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Filing: 1962-01-16
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Granted: 1965-10-19
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Expires: 1982-01-16
Abstract
No abstract record available.
Inventors
- 👤 Okuda Jiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:42
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/0823; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A SIGNAL LEVEL DISCRIMINATOR CIRCUIT FOR DISCRIMINATING POTENTIAL CONDITIONS OF AN INPUT SIGNAL COMPRISING: MEANS FOR GENERATING POSITIVE AND NEGATIVE INTERROGATION PULSES OF PREDETERMINED AMPLITUDE; AN OUTPUT CAPACITOR; A TWO TERMINAL DIODE, HAVING A CHARACTERISTIC CURVE CONTAINING POSITIVE AND NEGATIVE CONDUCTING REGIONS SEPARATED BY A CUTOFF REGION, COUPLED BETWEEN SAID OUTPUT CAPACITOR AND SAID PULSE MENS; AND MEANS, COUPLED TO SAID DIODE, FOR THE BIASING THEREOF WITH SAID INPUT SIGNAL, WHEREBY UPON INTERROGATION BY SAID PULSES SAID OUTPUT CAPACITOR EXHIBITS AN OUTPUT PULSE OF ONE POLARITY FOR A FIRST RANGE OF INPUT VOLTAGES AND AN OUTPUT PULSE OF THE OTHER POLARITY FOR A SECOND RANGE OF INPUT VOLTAGES AND A THIRD OUTPUT PULSE CONDITION FOR VOLTAGES BETWEEN SAID FIRST AND SECOND RANGES.
Claim 2
Dependent Claim
122 words
A SIGNAL LEVEL DISCRIMINATOR CIRCUIT FOR DISCRIMINATING POTENTIAL CONDITIONS OF AN INPUT SIGNAL COMPRISING: MEANS FOR GENERATING POSITIVE AND NEGATIVE INTERROGATION PULSES OF PREDETERMINED AMPLITUDE; AN OUTPUT CAPACITOR; A TWO TERMINAL DIODE, HAVING A CHARACTERISTIC CURVE CONTAINING POSITIVE AND NEGATIVE CONDUCTING REGIONS SEPARATED BY A CUTOFF REGION, COUPLED BETWEEN SAID OUTPUT CAPACITOR AND SAID PULSE MENS; AND MEANS, COUPLED TO SAID DIODE, FOR THE BIASING THEREOF WITH SAID INPUT SIGNAL, WHEREBY UPON INTERROGATION BY SAID PULSES SAID OUTPUT CAPACITOR EXHIBITS AN OUTPUT PULSE OF ONE POLARITY FOR A FIRST RANGE OF INPUT VOLTAGES AND AN OUTPUT PULSE OF THE OTHER POLARITY FOR A SECOND RANGE OF INPUT VOLTAGES AND A THIRD OUTPUT PULSE CONDITION FOR VOLTAGES BETWEEN SAID FIRST AND SECOND RANGES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |