Synchronous separation circuit
Abstract
Abstract A synchronous separation circuit comprises a capacitor, one end of the capacitor serving as an input terminal for receiving a synthetic video signal, a first C-MOS inverter, an input terminal of which is connected to the other end of the capacitor, a first resistor, one end of which is connected to the other end of the capacitor, a diode, one end of which is connected to the other end of the capacitor, and a second C-MOS inverter, an input terminal of which is connected to the other end of the diode, while an output terminal of which is connected directly or through a second resistor to the input terminal of the second C-MOS inverter, wherein when the synthetic video signal has positive characteristics, a potential at the other end of the first resistor is set to a value equal to or lower than a potential at the input terminal of the second C-MOS inverter, and when the synthetic video signal has negative characteristics, the potential at the other end of the first resistor is set to a value equal to or higher than the potential at the input terminal of the second C-MOS inverter, so as to provide a direct current bias voltage.
Inventors
- 👤 Kiyoshi Kamiya
Bibliographic Details
Claims Analysis
Total Claims: 6References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |