US3330907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulation indicating devices
Assignee: Panasonic Holdings Corp
•
Filing: 1963-10-07
•
Granted: 1967-07-11
•
Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 Arimura Ichiro
- 👤 Nagaoka Tadashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:49
CPC Classifications
H; H04; H04N; H04N17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A MODULATION INDICATING DEVICE COMPRISING PULSE GENERATOR MEANS HAVING AT LEAST ONE AMPLIFYING STAGE AND A POSITIVE FEEDBACK PATH ACROSS SAID AMPLIFYING STAGE, AT LEAST SAID AMPLIFYING STAGE BEING SO BIASED THAT SAID PULSE GENERATOR MEANS MAY GENERATE AN OUTPUT PULSE ONLY WHEN A PEAK VOLTAGE OF AN INPUT IN THE FORM OF A MODULATING TELEVISION SIGNAL TO SAID PULSE GENERATOR MEANS EXCEEDS A PREDETERMINED ALLOWABLE MODULATION LEVEL, AND INDICATING MEANS OPERATIVE IN RESPONSE TO THE OUTPUT PULSE OF SAID PULSE GENERATOR MEANS.
Claim 2
Dependent Claim
83 words
A MODULATION INDICATING DEVICE COMPRISING PULSE GENERATOR MEANS HAVING AT LEAST ONE AMPLIFYING STAGE AND A POSITIVE FEEDBACK PATH ACROSS SAID AMPLIFYING STAGE, AT LEAST SAID AMPLIFYING STAGE BEING SO BIASED THAT SAID PULSE GENERATOR MEANS MAY GENERATE AN OUTPUT PULSE ONLY WHEN A PEAK VOLTAGE OF AN INPUT IN THE FORM OF A MODULATING TELEVISION SIGNAL TO SAID PULSE GENERATOR MEANS EXCEEDS A PREDETERMINED ALLOWABLE MODULATION LEVEL, AND INDICATING MEANS OPERATIVE IN RESPONSE TO THE OUTPUT PULSE OF SAID PULSE GENERATOR MEANS.
References Cited (Backward Citations)
US2575358A
Cited
US3184537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |