FI70356C - System foer behandling av televisionssignaler - Google Patents
System foer behandling av televisionssignaler Download PDFInfo
- Publication number
- FI70356C FI70356C FI802659A FI802659A FI70356C FI 70356 C FI70356 C FI 70356C FI 802659 A FI802659 A FI 802659A FI 802659 A FI802659 A FI 802659A FI 70356 C FI70356 C FI 70356C
- Authority
- FI
- Finland
- Prior art keywords
- frequency
- signal
- intermediate frequency
- circuit
- aft
- Prior art date
Links
- 230000004044 response Effects 0.000 claims description 48
- 239000003990 capacitor Substances 0.000 claims description 24
- 230000010363 phase shift Effects 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 7
- 230000005236 sound signal Effects 0.000 claims description 7
- 239000000969 carrier Substances 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims 2
- 230000001360 synchronised effect Effects 0.000 description 13
- 238000001514 detection method Methods 0.000 description 9
- 239000013598 vector Substances 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000036039 immunity Effects 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010587 phase diagram Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013643 reference control Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 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
- H04N5/50—Tuning indicators; Automatic tuning control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Processing Of Color Television Signals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7090379 | 1979-08-29 | ||
| US06/070,903 US4263611A (en) | 1979-08-29 | 1979-08-29 | Television signal processing system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI802659A FI802659A (fi) | 1981-03-01 |
| FI70356B FI70356B (fi) | 1986-02-28 |
| FI70356C true FI70356C (fi) | 1986-09-15 |
Family
ID=22098069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI802659A FI70356C (fi) | 1979-08-29 | 1980-08-22 | System foer behandling av televisionssignaler |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US4263611A (it) |
| JP (1) | JPS5636274A (it) |
| KR (1) | KR840000112B1 (it) |
| AT (1) | AT389198B (it) |
| AU (1) | AU530505B2 (it) |
| BE (1) | BE884972A (it) |
| CA (1) | CA1147453A (it) |
| DE (1) | DE3032622C2 (it) |
| DK (1) | DK159236C (it) |
| ES (1) | ES494570A0 (it) |
| FI (1) | FI70356C (it) |
| FR (1) | FR2464610B1 (it) |
| GB (1) | GB2059700B (it) |
| HK (1) | HK8485A (it) |
| IT (1) | IT1132559B (it) |
| MY (1) | MY8500731A (it) |
| NL (1) | NL190216C (it) |
| NZ (1) | NZ194799A (it) |
| PT (1) | PT71720B (it) |
| SE (1) | SE447779B (it) |
| SG (1) | SG87184G (it) |
| SU (1) | SU1326206A3 (it) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388649A (en) * | 1981-06-01 | 1983-06-14 | Rca Corporation | AFT Lockout prevention system |
| US4502078A (en) * | 1982-02-22 | 1985-02-26 | Rca Corporation | Digital television receivers |
| GB2126812B (en) * | 1982-08-30 | 1986-05-08 | Rca Corp | Television sound detection system using a phase-locked loop |
| US4513323A (en) * | 1982-11-30 | 1985-04-23 | Rca Corporation | Buzz reduction for intercarrier type television sound detection |
| DE3504045A1 (de) * | 1985-02-04 | 1986-08-07 | Schering AG, 1000 Berlin und 4709 Bergkamen | Verfahren zur herstellung von ss-carbolinen durch dehydrierung |
| US4639786A (en) * | 1985-10-23 | 1987-01-27 | Rca Corporation | Television sound signal processor |
| US4814887A (en) * | 1988-05-23 | 1989-03-21 | General Instrument Corporation | Automatic frequency control |
| US4974087A (en) * | 1989-04-13 | 1990-11-27 | Rca Licensing Corporation | Parallel sound if with reference carrier derived from quasi-synchronous video detector |
| JPH0398514U (it) * | 1990-01-30 | 1991-10-14 | ||
| US5177613A (en) * | 1990-02-26 | 1993-01-05 | Thomson Consumer Electronics, Inc. | Quasi-parallel if with shared saw filter |
| DE69809384T2 (de) * | 1997-07-25 | 2003-07-10 | Koninklijke Philips Electronics N.V., Eindhoven | Empfang modulierter träger mit asymmetrischen seitenbändern |
| EP1798854A1 (en) * | 2005-12-14 | 2007-06-20 | Dibcom | Enhanced low noise amplifier |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3697685A (en) * | 1970-04-13 | 1972-10-10 | Motorola Inc | Synchronous am detector |
| US3760094A (en) * | 1971-02-18 | 1973-09-18 | Zenith Radio Corp | Automatic fine tuning with phase-locked loop and synchronous detection |
| NL173342C (nl) * | 1973-08-03 | 1984-06-18 | Philips Nv | Televisieontvanger met een automatische afstemcorrectieschakeling. |
| JPS5058623U (it) * | 1974-04-09 | 1975-05-31 | ||
| JPS5318912A (en) * | 1976-08-05 | 1978-02-21 | Hitachi Ltd | Signal reception circuit of television receiver |
| NL7613946A (nl) * | 1976-12-16 | 1978-06-20 | Philips Nv | Televisieontvanger met een demodulatorschakeling voor het demoduleren van een op een draaggolf ge- moduleerd televisiesignaal. |
| DE2657869C3 (de) * | 1976-12-21 | 1979-12-13 | Norddeutsche Mende Rundfunk Kg, 2800 Bremen | Schaltungsanordnung zum automatischen Nachstimmen eines Empfänger-Oszillators |
| JPS5386116A (en) * | 1977-01-07 | 1978-07-29 | Hitachi Ltd | Video synchronous detector |
| US4091421A (en) * | 1977-04-28 | 1978-05-23 | Zenith Radio Corporation | Television AFC system having complementary sound and picture carrier control effects |
-
1979
- 1979-08-29 US US06/070,903 patent/US4263611A/en not_active Expired - Lifetime
-
1980
- 1980-08-13 IT IT24147/80A patent/IT1132559B/it active
- 1980-08-19 CA CA000358607A patent/CA1147453A/en not_active Expired
- 1980-08-21 PT PT71720A patent/PT71720B/pt unknown
- 1980-08-21 GB GB8027185A patent/GB2059700B/en not_active Expired
- 1980-08-22 FI FI802659A patent/FI70356C/fi not_active IP Right Cessation
- 1980-08-22 AU AU61684/80A patent/AU530505B2/en not_active Expired
- 1980-08-22 SE SE8005897A patent/SE447779B/sv not_active IP Right Cessation
- 1980-08-27 FR FR8018601A patent/FR2464610B1/fr not_active Expired
- 1980-08-28 KR KR1019800003410A patent/KR840000112B1/ko active
- 1980-08-28 ES ES494570A patent/ES494570A0/es active Granted
- 1980-08-28 NZ NZ194799A patent/NZ194799A/en unknown
- 1980-08-28 DK DK367180A patent/DK159236C/da not_active IP Right Cessation
- 1980-08-28 JP JP11964980A patent/JPS5636274A/ja active Granted
- 1980-08-28 BE BE0/201906A patent/BE884972A/fr not_active IP Right Cessation
- 1980-08-28 NL NL8004885A patent/NL190216C/xx not_active IP Right Cessation
- 1980-08-28 SU SU802977043A patent/SU1326206A3/ru active
- 1980-08-29 DE DE3032622A patent/DE3032622C2/de not_active Expired
- 1980-08-29 AT AT0438980A patent/AT389198B/de not_active IP Right Cessation
-
1984
- 1984-12-04 SG SG871/84A patent/SG87184G/en unknown
-
1985
- 1985-01-31 HK HK84/85A patent/HK8485A/xx not_active IP Right Cessation
- 1985-12-30 MY MY731/85A patent/MY8500731A/xx unknown
Also Published As
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MA | Patent expired |
Owner name: RCA LICENSING CORPORATION |