ES2046113B1 - MODULATOR WITH VARIABLE OUTPUT CHANNEL. - Google Patents
MODULATOR WITH VARIABLE OUTPUT CHANNEL.Info
- Publication number
- ES2046113B1 ES2046113B1 ES9200919A ES9200919A ES2046113B1 ES 2046113 B1 ES2046113 B1 ES 2046113B1 ES 9200919 A ES9200919 A ES 9200919A ES 9200919 A ES9200919 A ES 9200919A ES 2046113 B1 ES2046113 B1 ES 2046113B1
- Authority
- ES
- Spain
- Prior art keywords
- modulator
- signal
- band
- output channel
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Amplitude Modulation (AREA)
- Transmitters (AREA)
Abstract
MODULADOR CON CANAL DE SALIDA VARIABLE, QUE COMPRENDE TRES PARTES DIFERENCIADAS CORRESPONDIENTES A UN MODULADOR DE PRIMERA FRECUENCIA INTERMEDIA CONSTITUIDO POR UN MODULADOR DE DOBLE BANDA LATERAL Y UN FILTRO PASO BANDA VESTIGIAL; UN CONVERSOR A SEGUNDA FRECUENCIA INTERMEDIA FORMADO POR UN MEZCLADOR, UN OSCILADOR DE FRECUENCIA FIJA Y UN FILTRO PASO BANDA, Y UN CONVERSOR A CANAL DE SALIDA, COMPUESTO POR UN MEZCLADOR, UN OSCILADOR VARIABLE Y UN FILTRO PASO BANDA. DICHO MODULADOR, PARTIENDO DE UNA SEÑAL DE AUDIO Y VIDEO, OBTIENE UNA SEÑAL DE TV MODULADA EN AMPLITUD EN BANDA VESTIGIAL, DONDE EL CANAL DE DICHA SEÑAL PUEDE SER SELECCIONADO POR EL PROPIO USUARIO, CUMPLIENDOSE QUE DENTRO DE LA BANDA DE FRECUENCIA DE SALIDA NO APARECE NINGUNA SEÑAL INDESEADA, DE MODO QUE SE EVITA LA NECESIDAD DE INCLUIR UN FILTRO DE CANAL A LA SALIDA, SIENDO ASI LA SEÑAL SUSCEPTIBLE DE SER AMPLIFICADA EN BANDA ANCHA Y PUDIENDOSE POR TANTO ESTANDARIZAR LAS INSTALACIONES QUE UTILICEN DICHOS MODULADORES.MODULATOR WITH VARIABLE OUTPUT CHANNEL, COMPRISING THREE DIFFERENTIATED PARTS CORRESPONDING TO A MODULE OF FIRST INTERMEDIATE FREQUENCY CONSISTING OF A DOUBLE-SIDE BAND MODULATOR AND A PASSAGE BAND-FILTER; A INTERMEDIATE SECOND FREQUENCY CONVERTER FORMED BY A MIXER, A FIXED FREQUENCY OSCILLATOR AND A BAND PASS FILTER, AND AN OUTPUT CHANNEL CONVERTER, COMPOSED OF A MIXER, A VARIABLE OSCILLATOR AND A BAND PASS FILTER. SUCH MODULATOR, STARTING FROM AN AUDIO AND VIDEO SIGNAL, OBTAINS A WIDESCREEN MODULATED TV SIGNAL, WHERE THE SIGNAL CHANNEL CAN BE SELECTED BY THE OWN USER, FROM THE FREQUENCY BAND. NO SIGNAL WANTED, SO THAT THE NEED TO INCLUDE A CHANNEL FILTER AT THE OUTPUT IS AVOIDED, SO THE SIGNAL IS SUSCEPTIBLE TO BE AMPLIFIED IN A BROADBAND AND MAY THEREFORE STANDARDIZE THE FACILITIES USING THESE MODULATORS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9200919A ES2046113B1 (en) | 1992-05-04 | 1992-05-04 | MODULATOR WITH VARIABLE OUTPUT CHANNEL. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9200919A ES2046113B1 (en) | 1992-05-04 | 1992-05-04 | MODULATOR WITH VARIABLE OUTPUT CHANNEL. |
Publications (3)
Publication Number | Publication Date |
---|---|
ES2046113A2 ES2046113A2 (en) | 1994-01-16 |
ES2046113R ES2046113R (en) | 1996-07-16 |
ES2046113B1 true ES2046113B1 (en) | 1997-02-16 |
Family
ID=8276898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9200919A Expired - Lifetime ES2046113B1 (en) | 1992-05-04 | 1992-05-04 | MODULATOR WITH VARIABLE OUTPUT CHANNEL. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2046113B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2272140B1 (en) * | 2004-12-22 | 2008-03-16 | Angel Iglesias, S.A. | DOUBLE SIDE TELEVISION MODULATOR. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3775555A (en) * | 1972-08-31 | 1973-11-27 | Modulator system | |
US3955155A (en) * | 1974-12-23 | 1976-05-04 | Rca Corporation | Amplitude modulation system |
US4602287A (en) * | 1983-11-21 | 1986-07-22 | Zenith Electronics Corporation | Intermediate frequency filter with Nyquist phase modulation correction |
ES8707640A1 (en) * | 1986-05-14 | 1987-08-01 | Fagor Electrotecnica | Modulator for t.v. Community (Machine-translation by Google Translate, not legally binding) |
GB2219912B (en) * | 1988-06-10 | 1992-08-12 | British Broadcasting Corp | Vestigial sideband amplitude modulated transmission system with additional data capacity |
ES2021536A6 (en) * | 1990-05-07 | 1991-11-01 | Tagra Sa | Vestigial-band modulator for television |
-
1992
- 1992-05-04 ES ES9200919A patent/ES2046113B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2046113R (en) | 1996-07-16 |
ES2046113A2 (en) | 1994-01-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD2A | Seizure of patent freed |
Effective date: 19941115 |
|
EC2A | Search report published |
Effective date: 19940116 |
|
FA2A | Application withdrawn |
Effective date: 19980401 |