DE3938303C2 - - Google Patents
Info
- Publication number
- DE3938303C2 DE3938303C2 DE3938303A DE3938303A DE3938303C2 DE 3938303 C2 DE3938303 C2 DE 3938303C2 DE 3938303 A DE3938303 A DE 3938303A DE 3938303 A DE3938303 A DE 3938303A DE 3938303 C2 DE3938303 C2 DE 3938303C2
- Authority
- DE
- Germany
- Prior art keywords
- diodes
- transistor
- audio
- frequency
- demodulator
- 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
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000010897 surface acoustic wave method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
- H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
-
- 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
- H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
-
- 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)
- Television Receiver Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Networks Using Active Elements (AREA)
- Circuits Of Receivers In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR880018917 | 1988-11-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3938303A1 DE3938303A1 (de) | 1990-05-23 |
| DE3938303C2 true DE3938303C2 (enrdf_load_stackoverflow) | 1992-12-24 |
Family
ID=19281519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3938303A Granted DE3938303A1 (de) | 1988-11-22 | 1989-11-17 | Ton-zwischenfrequenzfilterkreis fuer mehrsystem-fernsehempfaenger |
Country Status (6)
| Country | Link |
|---|---|
| DE (1) | DE3938303A1 (enrdf_load_stackoverflow) |
| ES (1) | ES2017569A6 (enrdf_load_stackoverflow) |
| GB (1) | GB2225681B (enrdf_load_stackoverflow) |
| HU (1) | HU206173B (enrdf_load_stackoverflow) |
| IT (2) | IT1237577B (enrdf_load_stackoverflow) |
| RU (1) | RU1833515C (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4317220A1 (de) * | 1993-05-24 | 1994-12-01 | Thomson Brandt Gmbh | Schaltung zur Tonnorm-Erkennung in einem Fernsehempfänger |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3858118A (en) * | 1973-07-17 | 1974-12-31 | Westinghouse Electric Corp | Acoustic surface wave television tuner |
| FI63508C (fi) * | 1981-02-11 | 1983-06-10 | Salora Oy | Koppling vid en televisionsmottagare foer detektering av ljudsignaler som saents enligt olika saendningsnormer |
| US4511924A (en) * | 1982-10-29 | 1985-04-16 | Rca Corporation | Frequency translation phase-locked loop for separate or intercarrier type television sound detection |
| DE3509516C1 (de) * | 1985-03-16 | 1986-09-18 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung der Eingangsstufen eines Fernsehtuners |
-
1989
- 1989-11-17 HU HU895954A patent/HU206173B/hu not_active IP Right Cessation
- 1989-11-17 DE DE3938303A patent/DE3938303A1/de active Granted
- 1989-11-20 GB GB8926168A patent/GB2225681B/en not_active Expired - Fee Related
- 1989-11-20 ES ES898903952A patent/ES2017569A6/es not_active Expired - Lifetime
- 1989-11-21 IT IT04688689A patent/IT1237577B/it active IP Right Grant
- 1989-11-21 IT IT34897U patent/IT8934897V0/it unknown
- 1989-11-21 RU SU894742485A patent/RU1833515C/ru active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2017569A6 (es) | 1991-02-16 |
| GB2225681A (en) | 1990-06-06 |
| HU206173B (en) | 1992-08-28 |
| IT8946886A0 (it) | 1989-11-21 |
| IT1237577B (it) | 1993-06-08 |
| IT8946886A1 (it) | 1991-05-21 |
| IT8934897V0 (it) | 1989-11-21 |
| GB8926168D0 (en) | 1990-01-10 |
| HUT55179A (en) | 1991-04-29 |
| GB2225681B (en) | 1993-04-14 |
| HU895954D0 (en) | 1990-02-28 |
| DE3938303A1 (de) | 1990-05-23 |
| RU1833515C (en) | 1993-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8365 | Fully valid after opposition proceedings | ||
| 8339 | Ceased/non-payment of the annual fee |