ES475148A1 - Perfeccionamientos en dispositivos de circulo i.f. para re- ceptores de television. - Google Patents
Perfeccionamientos en dispositivos de circulo i.f. para re- ceptores de television.Info
- Publication number
- ES475148A1 ES475148A1 ES475148A ES475148A ES475148A1 ES 475148 A1 ES475148 A1 ES 475148A1 ES 475148 A ES475148 A ES 475148A ES 475148 A ES475148 A ES 475148A ES 475148 A1 ES475148 A1 ES 475148A1
- Authority
- ES
- Spain
- Prior art keywords
- sound
- amplifier
- output
- video
- television receiver
- 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
Links
- 238000010897 surface acoustic wave method Methods 0.000 abstract 2
- 230000002238 attenuated effect Effects 0.000 abstract 1
- 239000000969 carrier Substances 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/4446—IF amplifier circuits specially adapted for B&W TV
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/72—Networks using surface acoustic waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Television Receiver Circuits (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Superheterodyne Receivers (AREA)
Abstract
Perfeccionamientos en dispositivos de circuito de I.F. para receptores de televisión, caracterizados porque se dota a cada dispositivo de un paquete de filtro de onda acústica superficial que tiene una entrada para una señal de I.F. proporcionada, en la práctica, por un sintonizador, y que tiene dos salidas, una de las cuales proporciona una señal de I.F. de video que tiene una atenuación sustancial a la frecuencia de la portadora de sonido y la otra salida proporciona una señal de I.F. de sonido, utilizándose dos detectores dispuestos, respectivamente, para detectar las señales de video y de sonido.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4758977 | 1977-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES475148A1 true ES475148A1 (es) | 1979-05-01 |
Family
ID=10445534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES475148A Expired ES475148A1 (es) | 1977-11-16 | 1978-11-16 | Perfeccionamientos en dispositivos de circulo i.f. para re- ceptores de television. |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5478620A (es) |
BR (1) | BR7807531A (es) |
DE (1) | DE2848898A1 (es) |
ES (1) | ES475148A1 (es) |
FR (1) | FR2409647A1 (es) |
GB (1) | GB2009546A (es) |
IT (1) | IT1101161B (es) |
NL (1) | NL7811294A (es) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5773514A (en) * | 1980-10-25 | 1982-05-08 | Fujitsu Ltd | Surface acoustic wave filter |
JPS58200618A (ja) * | 1982-05-19 | 1983-11-22 | Hitachi Ltd | 弾性表面波装置 |
GB8223113D0 (en) * | 1982-08-12 | 1994-03-09 | Secr Defence | Signal processing |
US4639786A (en) * | 1985-10-23 | 1987-01-27 | Rca Corporation | Television sound signal processor |
US4825467A (en) * | 1986-11-25 | 1989-04-25 | International Telesystems, Inc. | Restricted access television transmission system |
TW256966B (es) * | 1994-03-04 | 1995-09-11 | Murata Manufacturing Co | |
JP3106924B2 (ja) * | 1995-08-31 | 2000-11-06 | 株式会社村田製作所 | 表面波共振子 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB643694A (en) * | 1948-05-26 | 1950-09-27 | Standard Telephones Cables Ltd | Improvements in or relating to television receivers |
US2699497A (en) * | 1950-06-22 | 1955-01-11 | Du Mont Allen B Lab Inc | Television receiver |
US2944106A (en) * | 1958-03-07 | 1960-07-05 | Rca Corp | Sound cancellation in television receivers |
TR19145A (tr) * | 1975-02-07 | 1978-07-01 | Hitachi Ltd | Renkli televizyon alicisi |
-
1978
- 1978-10-27 GB GB7842157A patent/GB2009546A/en not_active Withdrawn
- 1978-11-10 DE DE19782848898 patent/DE2848898A1/de not_active Withdrawn
- 1978-11-15 IT IT29827/78A patent/IT1101161B/it active
- 1978-11-15 JP JP14093878A patent/JPS5478620A/ja active Pending
- 1978-11-15 NL NL7811294A patent/NL7811294A/xx not_active Application Discontinuation
- 1978-11-15 FR FR7832262A patent/FR2409647A1/fr not_active Withdrawn
- 1978-11-16 ES ES475148A patent/ES475148A1/es not_active Expired
- 1978-11-16 BR BR7807531A patent/BR7807531A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
IT1101161B (it) | 1985-09-28 |
GB2009546A (en) | 1979-06-13 |
IT7829827A0 (it) | 1978-11-15 |
NL7811294A (nl) | 1979-05-18 |
DE2848898A1 (de) | 1979-05-17 |
JPS5478620A (en) | 1979-06-22 |
FR2409647A1 (fr) | 1979-06-15 |
BR7807531A (pt) | 1979-07-31 |
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