IT958874B - Filtro a onda di superficie a fre quenza intermedia per ricevitore televisivo a colori - Google Patents
Filtro a onda di superficie a fre quenza intermedia per ricevitore televisivo a coloriInfo
- Publication number
- IT958874B IT958874B IT68519/72A IT6851972A IT958874B IT 958874 B IT958874 B IT 958874B IT 68519/72 A IT68519/72 A IT 68519/72A IT 6851972 A IT6851972 A IT 6851972A IT 958874 B IT958874 B IT 958874B
- Authority
- IT
- Italy
- Prior art keywords
- television receiver
- wave filter
- surface wave
- color television
- fre quency
- Prior art date
Links
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
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
- H03H9/1455—Transducers of particular shape or position constituted of N parallel or series transducers
-
- 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
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
- H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Transducers For Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1548271 | 1971-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT958874B true IT958874B (it) | 1973-10-30 |
Family
ID=10059918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT68519/72A IT958874B (it) | 1971-05-18 | 1972-05-15 | Filtro a onda di superficie a fre quenza intermedia per ricevitore televisivo a colori |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5341937B1 (de) |
| AU (1) | AU468110B2 (de) |
| BE (1) | BE783542A (de) |
| DE (1) | DE2220924C3 (de) |
| ES (1) | ES402770A1 (de) |
| FR (1) | FR2138105B1 (de) |
| GB (1) | GB1351286A (de) |
| IT (1) | IT958874B (de) |
| NL (1) | NL7206490A (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1554366A (en) * | 1977-02-04 | 1979-10-17 | Philips Electronic Associated | Acoustic surface wave devices |
| FR2428350A1 (fr) * | 1978-06-06 | 1980-01-04 | Thomson Csf | Filtre a ondes elastiques de surface et etage de frequence intermediaire d'un recepteur de television comprenant un tel filtre |
| JPS55134587A (en) * | 1979-04-05 | 1980-10-20 | Sanyo Electric Co Ltd | Color television receiver |
| JPS57172422U (de) * | 1981-04-25 | 1982-10-30 | ||
| JPS5857813A (ja) * | 1981-10-02 | 1983-04-06 | Hitachi Ltd | 振幅周波数特性の可変な弾性表面波装置 |
| US4604595A (en) * | 1982-06-16 | 1986-08-05 | Murata Manufacturing Co., Ltd. | Surface acoustic wave device having interdigitated comb electrodes weighted for odd/even response |
| GB2157522B (en) * | 1984-04-09 | 1987-08-19 | Philips Electronic Associated | Electrical filter comprising an acoustic surface wave device, and method of manufacturing such a filter |
-
1971
- 1971-05-18 GB GB1548271*[A patent/GB1351286A/en not_active Expired
-
1972
- 1972-04-28 DE DE2220924A patent/DE2220924C3/de not_active Expired
- 1972-05-12 AU AU42205/72A patent/AU468110B2/en not_active Expired
- 1972-05-13 NL NL7206490A patent/NL7206490A/xx unknown
- 1972-05-15 IT IT68519/72A patent/IT958874B/it active
- 1972-05-15 JP JP4728072A patent/JPS5341937B1/ja active Pending
- 1972-05-16 ES ES402770A patent/ES402770A1/es not_active Expired
- 1972-05-16 BE BE783542A patent/BE783542A/xx unknown
- 1972-05-18 FR FR727217875A patent/FR2138105B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU4220572A (en) | 1973-11-15 |
| DE2220924C3 (de) | 1979-09-20 |
| JPS5341937B1 (de) | 1978-11-08 |
| BE783542A (fr) | 1972-11-16 |
| NL7206490A (de) | 1972-11-21 |
| FR2138105B1 (de) | 1973-07-13 |
| GB1351286A (en) | 1974-04-24 |
| FR2138105A1 (de) | 1972-12-29 |
| ES402770A1 (es) | 1975-10-16 |
| DE2220924B2 (de) | 1979-02-01 |
| DE2220924A1 (de) | 1972-12-07 |
| AU468110B2 (en) | 1976-01-08 |
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