US3221098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple lingual television in a multiplex broadcast system
Assignee: Individual
•
Filing: 1962-08-15
•
Granted: 1965-11-30
•
Expires: 1982-08-15
Abstract
No abstract record available.
Inventors
- 👤 Eugene S Feldman
- 👤 Wing Omar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:53
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/06; H04N5/00; H04N5/44; H04N5/60; H04N5/607
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
MEANS FOR MODIFYING A CONVENTIONAL TV RECEIVER HAVING A DISCRIMINATOR AND AUDIO AMPLIFIER TO PERMIT SELECTION OF ANY ONE OF A PLURALITY OF DIFFERENT LINGUAL AUDIO SIGNALS RESPECTIVELY AMPLITUDE MODULATED ON SUBCARRIERS SPACED APART IN FREQUENCY WITHIN THE ALLOTTED SOUND BANDWIDTH WITH THE SUBCARRIERS BEING FREQUENCY MODULATED ON A SINGLE CHANNEL CARRIER TO BE SIMULTANEOUSLY BROADCAST COMPRISING IN COMBINATION A PLURALITY OF FREQUENCY SELECTIVE PATHS INCLUDING RESPECTIVELY BANDPASS FILTERS RESPONSIVE TO THE SUBCARRIERS OF THE AUDIO SIGNALS; AN AMPLITUDE DETECTOR; AND SWITCHING MEANS FOR SELECTIVELY CONNECTING ANY ONE OF SAID PATHS BETWEEN THE DISCRIMINATOR AND THE DETECTOR TO PERMIT DETECTION OF THE AUDIO SIGNAL FROM THE SELECTED SUBCARRIER FOR APPLICATION TO THE AUDIO AMPLIFIER TO PROVIDE LANGUAGE FOR USE WITH THE TV PICTURE.
Claim 2
Dependent Claim
123 words
MEANS FOR MODIFYING A CONVENTIONAL TV RECEIVER HAVING A DISCRIMINATOR AND AUDIO AMPLIFIER TO PERMIT SELECTION OF ANY ONE OF A PLURALITY OF DIFFERENT LINGUAL AUDIO SIGNALS RESPECTIVELY AMPLITUDE MODULATED ON SUBCARRIERS SPACED APART IN FREQUENCY WITHIN THE ALLOTTED SOUND BANDWIDTH WITH THE SUBCARRIERS BEING FREQUENCY MODULATED ON A SINGLE CHANNEL CARRIER TO BE SIMULTANEOUSLY BROADCAST COMPRISING IN COMBINATION A PLURALITY OF FREQUENCY SELECTIVE PATHS INCLUDING RESPECTIVELY BANDPASS FILTERS RESPONSIVE TO THE SUBCARRIERS OF THE AUDIO SIGNALS; AN AMPLITUDE DETECTOR; AND SWITCHING MEANS FOR SELECTIVELY CONNECTING ANY ONE OF SAID PATHS BETWEEN THE DISCRIMINATOR AND THE DETECTOR TO PERMIT DETECTION OF THE AUDIO SIGNAL FROM THE SELECTED SUBCARRIER FOR APPLICATION TO THE AUDIO AMPLIFIER TO PROVIDE LANGUAGE FOR USE WITH THE TV PICTURE.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |