GB1351286A - Electromechanical if filter for television receivers - Google Patents
Electromechanical if filter for television receiversInfo
- Publication number
- GB1351286A GB1351286A GB1548271*[A GB1351286DA GB1351286A GB 1351286 A GB1351286 A GB 1351286A GB 1351286D A GB1351286D A GB 1351286DA GB 1351286 A GB1351286 A GB 1351286A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transducers
- filter
- luminance
- surface wave
- chrominance
- 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
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 abstract 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 abstract 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 abstract 1
- 229910002113 barium titanate Inorganic materials 0.000 abstract 1
- CJOBVZJTOIVNNF-UHFFFAOYSA-N cadmium sulfide Chemical compound [Cd]=S CJOBVZJTOIVNNF-UHFFFAOYSA-N 0.000 abstract 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 238000013016 damping Methods 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 abstract 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 235000019837 monoammonium phosphate Nutrition 0.000 abstract 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 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 elements; 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 elements; 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)
- Processing Of Color Television Signals (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 |
|---|---|
| GB1351286A true GB1351286A (en) | 1974-04-24 |
Family
ID=10059918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1548271*[A Expired GB1351286A (en) | 1971-05-18 | 1971-05-18 | Electromechanical if filter for television receivers |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5341937B1 (enrdf_load_stackoverflow) |
| AU (1) | AU468110B2 (enrdf_load_stackoverflow) |
| BE (1) | BE783542A (enrdf_load_stackoverflow) |
| DE (1) | DE2220924C3 (enrdf_load_stackoverflow) |
| ES (1) | ES402770A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2138105B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1351286A (enrdf_load_stackoverflow) |
| IT (1) | IT958874B (enrdf_load_stackoverflow) |
| NL (1) | NL7206490A (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US4910483A (en) * | 1984-04-09 | 1990-03-20 | U.S. Philips Corporation | Acoustic surface wave filter device with asymmetric transducers and method of manufacturing same |
Families Citing this family (5)
| 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 (enrdf_load_stackoverflow) * | 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 |
-
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 JP JP4728072A patent/JPS5341937B1/ja active Pending
- 1972-05-15 IT IT68519/72A patent/IT958874B/it active
- 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US4910483A (en) * | 1984-04-09 | 1990-03-20 | U.S. Philips Corporation | Acoustic surface wave filter device with asymmetric transducers and method of manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| BE783542A (fr) | 1972-11-16 |
| FR2138105A1 (enrdf_load_stackoverflow) | 1972-12-29 |
| IT958874B (it) | 1973-10-30 |
| JPS5341937B1 (enrdf_load_stackoverflow) | 1978-11-08 |
| DE2220924B2 (de) | 1979-02-01 |
| AU4220572A (en) | 1973-11-15 |
| NL7206490A (enrdf_load_stackoverflow) | 1972-11-21 |
| FR2138105B1 (enrdf_load_stackoverflow) | 1973-07-13 |
| DE2220924A1 (de) | 1972-12-07 |
| AU468110B2 (en) | 1976-01-08 |
| DE2220924C3 (de) | 1979-09-20 |
| ES402770A1 (es) | 1975-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |