Patent US3289089A successfully refreshed from Google Patents.
US3289089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced video gate
Assignee: Individual
•
Filing: 1963-07-05
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Granted: 1966-11-29
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Richard A Linder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:59
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/74; H04; H04N; H04N5/00; H04N5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A BALANCED VIDEO GATE COMPRISING: A GATE CIRCUIT HAVING A VIDEO INPUT, A GATE CONTROL INPUT, AND A VIDEO OUTPUT FOR GATING VIDEO SIGNALS APPKIED TO THE INPUT THEREOF; A DUPLICATE GATE CIRCUIT HAVING A COMPENSATING CIRCUIT INPUT, A GATE CONTROL INPUT COUPLED IN COMMON WITH THE GATE CONTROL INPUT OF SAID GATE CIRCUIT, AND HAVING AN OUTPUT; A COMPENSATING CIRCUIT COUPLED TO SAID COMPENSATING CIRCUIT INPUT TO MATCH THE IMPEDANCE ON SAID VIDEO INPUT; A DIFFERENTIAL AMPLIFIER HAVING TWO INPUTS COUPLED TO ONE EACH OUTPUT OF SAID GATE AND DUPLICATE GATE CIRCUITS AND HAVING AN OUTPUT; ONE INPUT RECEIVING THE GATED VIDEO SIGNALS AND THE GATE SWITCHING TRANSIENT VOLTAGES AND THE OTHER INPUT RECEIVING THE GATED SWITCHING TRANSIENT VOLTAGES OF THE DUPLICATE GATE CIRCUIT WHEREBY THE GATE SWITCHING TRANSIENT VOLTAGES ESSENTIALLY CANCEL IN SAID DIFFERENTIAL AMPLIFIER AND SAID VIDEO SIGNALS ARE AMPLIFIED ON THE OUTPUT THEREOF.
Claim 2
Dependent Claim
147 words
A BALANCED VIDEO GATE COMPRISING: A GATE CIRCUIT HAVING A VIDEO INPUT, A GATE CONTROL INPUT, AND A VIDEO OUTPUT FOR GATING VIDEO SIGNALS APPKIED TO THE INPUT THEREOF; A DUPLICATE GATE CIRCUIT HAVING A COMPENSATING CIRCUIT INPUT, A GATE CONTROL INPUT COUPLED IN COMMON WITH THE GATE CONTROL INPUT OF SAID GATE CIRCUIT, AND HAVING AN OUTPUT; A COMPENSATING CIRCUIT COUPLED TO SAID COMPENSATING CIRCUIT INPUT TO MATCH THE IMPEDANCE ON SAID VIDEO INPUT; A DIFFERENTIAL AMPLIFIER HAVING TWO INPUTS COUPLED TO ONE EACH OUTPUT OF SAID GATE AND DUPLICATE GATE CIRCUITS AND HAVING AN OUTPUT; ONE INPUT RECEIVING THE GATED VIDEO SIGNALS AND THE GATE SWITCHING TRANSIENT VOLTAGES AND THE OTHER INPUT RECEIVING THE GATED SWITCHING TRANSIENT VOLTAGES OF THE DUPLICATE GATE CIRCUIT WHEREBY THE GATE SWITCHING TRANSIENT VOLTAGES ESSENTIALLY CANCEL IN SAID DIFFERENTIAL AMPLIFIER AND SAID VIDEO SIGNALS ARE AMPLIFIED ON THE OUTPUT THEREOF.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |