FR2138105A1 - - Google Patents
Info
- Publication number
- FR2138105A1 FR2138105A1 FR7217875A FR7217875A FR2138105A1 FR 2138105 A1 FR2138105 A1 FR 2138105A1 FR 7217875 A FR7217875 A FR 7217875A FR 7217875 A FR7217875 A FR 7217875A FR 2138105 A1 FR2138105 A1 FR 2138105A1
- Authority
- FR
- France
- 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.)
- Granted
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 (2)
| Publication Number | Publication Date |
|---|---|
| FR2138105A1 true FR2138105A1 (it) | 1972-12-29 |
| FR2138105B1 FR2138105B1 (it) | 1973-07-13 |
Family
ID=10059918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR727217875A Expired FR2138105B1 (it) | 1971-05-18 | 1972-05-18 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5341937B1 (it) |
| AU (1) | AU468110B2 (it) |
| BE (1) | BE783542A (it) |
| DE (1) | DE2220924C3 (it) |
| ES (1) | ES402770A1 (it) |
| FR (1) | FR2138105B1 (it) |
| GB (1) | GB1351286A (it) |
| IT (1) | IT958874B (it) |
| NL (1) | NL7206490A (it) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0006054A1 (fr) * | 1978-06-06 | 1979-12-12 | Thomson-Csf | Filtre à ondes élastiques de surface et étage de fréquence intermédiaire d'un récepteur de télévision comprenant un tel filtre |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1554366A (en) * | 1977-02-04 | 1979-10-17 | Philips Electronic Associated | Acoustic surface wave devices |
| JPS55134587A (en) * | 1979-04-05 | 1980-10-20 | Sanyo Electric Co Ltd | Color television receiver |
| JPS57172422U (it) * | 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
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0006054A1 (fr) * | 1978-06-06 | 1979-12-12 | Thomson-Csf | Filtre à ondes élastiques de surface et étage de fréquence intermédiaire d'un récepteur de télévision comprenant un tel filtre |
| 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 |
| US4257021A (en) * | 1978-06-06 | 1981-03-17 | Thomson-Csf | Elastic surface wave filter |
Also Published As
| Publication number | Publication date |
|---|---|
| IT958874B (it) | 1973-10-30 |
| AU4220572A (en) | 1973-11-15 |
| DE2220924C3 (de) | 1979-09-20 |
| JPS5341937B1 (it) | 1978-11-08 |
| BE783542A (fr) | 1972-11-16 |
| NL7206490A (it) | 1972-11-21 |
| FR2138105B1 (it) | 1973-07-13 |
| GB1351286A (en) | 1974-04-24 |
| ES402770A1 (es) | 1975-10-16 |
| DE2220924B2 (de) | 1979-02-01 |
| DE2220924A1 (de) | 1972-12-07 |
| AU468110B2 (en) | 1976-01-08 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |