DK164014C - CIRCUIT FOR EXTRACING THE AUDIO COMPONENTS IN A TELEVISION SENDER OUTPUT SIGNALS - Google Patents
CIRCUIT FOR EXTRACING THE AUDIO COMPONENTS IN A TELEVISION SENDER OUTPUT SIGNALSInfo
- Publication number
- DK164014C DK164014C DK127185A DK127185A DK164014C DK 164014 C DK164014 C DK 164014C DK 127185 A DK127185 A DK 127185A DK 127185 A DK127185 A DK 127185A DK 164014 C DK164014 C DK 164014C
- Authority
- DK
- Denmark
- Prior art keywords
- signal
- image
- television
- tested
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Amplifiers (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Details Of Television Systems (AREA)
- Superheterodyne Receivers (AREA)
Abstract
1. A separating device for extracting the sound from the output signal of a television transmitter, comprising means (6) for deriving the signal to be tested at the output of the transmitter, characterized in that it comprises a subtraction circuit (16 and 17) to receive the signal to be tested at a first input (A'), and conversion means (8-14), coupled with a terminal (B) delivering the image intermediate frequency signal, for processing a sole image signal so that, applied to a second input (B') of the subtraction circuit, the subtraction yields a signal corresponding to the signal to be tested freed of at least the part of the image spectrum whichis the nearest to the sound spectrum and in that the conversion means comprise for this purpose : a converter (13) coupled in order to receive, as the transposition signal, the RF transposition signal (FT ) of the transmitter and, as a signal to be transposed, at least the part of the spectrum of the image intermediate frequency signal which is nearest to the sound intermediate frequency signal ; and regulating circuits (10, 11 and 14) for regulating the time of transit (10), the amplitude (14) and the phase (11) of the sole image signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8404550A FR2561845B1 (en) | 1984-03-23 | 1984-03-23 | SEPARATOR DEVICE FOR EXTRACTING SOUND FROM THE OUTPUT SIGNAL OF A TELEVISION TRANSMITTER AND TELEVISION TRANSMITTER COMPRISING SUCH A DEVICE |
| FR8404550 | 1984-03-23 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK127185D0 DK127185D0 (en) | 1985-03-21 |
| DK127185A DK127185A (en) | 1985-09-24 |
| DK164014B DK164014B (en) | 1992-04-27 |
| DK164014C true DK164014C (en) | 1992-09-21 |
Family
ID=9302394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK127185A DK164014C (en) | 1984-03-23 | 1985-03-21 | CIRCUIT FOR EXTRACING THE AUDIO COMPONENTS IN A TELEVISION SENDER OUTPUT SIGNALS |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0162732B1 (en) |
| JP (1) | JPS60214174A (en) |
| AT (1) | ATE37125T1 (en) |
| CA (1) | CA1229912A (en) |
| DE (1) | DE3564895D1 (en) |
| DK (1) | DK164014C (en) |
| FR (1) | FR2561845B1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009334A (en) * | 1976-03-17 | 1977-02-22 | Eastman Kodak Company | Video noise reduction circuit |
| FR2517914B1 (en) * | 1981-12-07 | 1986-02-07 | Labo Cent Telecommunicat | TELEVISION SIGNAL RETRANSMISSION EQUIPMENT ON COMMON CHANNEL, WITH AUTOMATIC IMAGE / SOUND CONTROL |
-
1984
- 1984-03-23 FR FR8404550A patent/FR2561845B1/en not_active Expired
-
1985
- 1985-03-18 EP EP85400516A patent/EP0162732B1/en not_active Expired
- 1985-03-18 DE DE8585400516T patent/DE3564895D1/en not_active Expired
- 1985-03-18 AT AT85400516T patent/ATE37125T1/en not_active IP Right Cessation
- 1985-03-19 JP JP60055645A patent/JPS60214174A/en active Granted
- 1985-03-21 CA CA000477106A patent/CA1229912A/en not_active Expired
- 1985-03-21 DK DK127185A patent/DK164014C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2561845B1 (en) | 1986-06-27 |
| FR2561845A1 (en) | 1985-09-27 |
| DK127185D0 (en) | 1985-03-21 |
| DK164014B (en) | 1992-04-27 |
| EP0162732A1 (en) | 1985-11-27 |
| JPS60214174A (en) | 1985-10-26 |
| JPH058912B2 (en) | 1993-02-03 |
| DK127185A (en) | 1985-09-24 |
| DE3564895D1 (en) | 1988-10-13 |
| EP0162732B1 (en) | 1988-09-07 |
| ATE37125T1 (en) | 1988-09-15 |
| CA1229912A (en) | 1987-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |