US4156253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-in-video television transmission
Assignee: Alcatel Lucent NV
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Filing: 1978-02-03
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Granted: 1979-05-22
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Expires: 1998-02-03
Abstract
Abstract A sound-in-video signal transmission system is made compatible with present domestic TV receivers by transmitting the color-sync signal in the time domain according to the current standard, and the sound signals are transmitted partly before it and partly after it.
Inventors
- 👤 Gunter Steudel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/08; H04N7/084; H04N7/085
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
A television transmission system wherein a color-sync signal and digital sound signals from at least one sound channel are transmitted in the horizontal blanking intervals during the period of the back porch, with the color-sync signal and the digital sound signals separated from each other, comprising: transmitting means for transmitting part of the sound signals to be transmitted during a line period before the color-sync signal, and the remainder thereafter; receiving means for receiving the video-sound signal so composed and extracting the sound signals therefrom.
Claim 2
Dependent Claim
85 words
A television transmission system wherein a color-sync signal and digital sound signals from at least one sound channel are transmitted in the horizontal blanking intervals during the period of the back porch, with the color-sync signal and the digital sound signals separated from each other, comprising: transmitting means for transmitting part of the sound signals to be transmitted during a line period before the color-sync signal, and the remainder thereafter; receiving means for receiving the video-sound signal so composed and extracting the sound signals therefrom.
Claim 3
Dependent Claim
52 words
A system according to claim 1, wherein the transmitting means and the receiving means include counters for reading the sound signals from, and writing them into, a buffer store which count the clock pulses for the buffer store and interrupt them for a time corresponding to the duration of the color-sync signal.
Claim 4
Dependent Claim
15 words
A system according to claim 1 wherein the receiving means are incorporated in domestic receivers.
Claim 5
Dependent Claim
18 words
A system according to claim 1 wherein the receiving means are designed as add-on units for domestic receivers.
Claim 6
Independent Claim
74 words
A method for transmitting a color-sync signal and sound signals during the horizontal blanking interval of a video signal in a television system, comprising the steps of: converting the sound signals into a digital form; transmitting the color-sync signal during a predetermined time of the horizontal blanking interval; transmitting a portion of the sound signals during a period before the color-sync signal; and transmitting the remainder of the sound signals after the color-sync signal.
Claim 7
Independent Claim
74 words
A method for transmitting a color-sync signal and sound signals during the horizontal blanking interval of a video signal in a television system, comprising the steps of: converting the sound signals into a digital form; transmitting the color-sync signal during a predetermined time of the horizontal blanking interval; transmitting a portion of the sound signals during a period before the color-sync signal; and transmitting the remainder of the sound signals after the color-sync signal.
Claim 8
Dependent Claim
47 words
A method for transmitting as described in claim 5, additionally comprising the steps of: generating and transmitting a starting pulse immediately prior to transmission of the first portion of the sound signals; and generating and transmitting a control pulse after the last sound signal has been transmitted.
Claim 9
Dependent Claim
75 words
A system according to claim 5, wherein the method includes the additional steps of: storing the digital sound signals; reading a portion of the digital sound signals from storage during a predetermined portion of the horizontal blanking interval; interrupting the reading of digital sound signals for a time period corresponding to the duration of the color-sync signal; and reading the remainder of the digital sound signals from storage after the color-sync signal has been transmitted.
Claim 10
Dependent Claim
26 words
A method as described in claim 5, additionally comprising the steps of: receiving the transmitted signals; and separating the digital sound signals from the color-sync signal.
Claim 11
Dependent Claim
74 words
A method as described in claim 8, additionally comprising the steps of: detecting the reception of the digital sound signals; writing said digital sound signals into a storage means for a predetermined period of time; interrupting said writing for a predetermined period of time corresponding to the duration of the color-sync signal; writing the remainder of the digital sound signals into the storage means; and reading the digital sound signals from the storage means.
Claim 12
Independent Claim
48 words
A method of transmitting a sound-in-video television signal, comprising the steps of: transmitting a color-sync signal during a predetermined standard time domain of a horizontal blanking interval; and transmitting the sound signals during the horizontal blanking interval partially before the color-sync signal and partially after the color-sync signal.
Claim 13
Independent Claim
48 words
A method of transmitting a sound-in-video television signal, comprising the steps of: transmitting a color-sync signal during a predetermined standard time domain of a horizontal blanking interval; and transmitting the sound signals during the horizontal blanking interval partially before the color-sync signal and partially after the color-sync signal.
References Cited (Backward Citations)
DE2529728A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |