FI68333C - Foer frekvensmodulerade signaler avsedd demodulator med feldetektion - Google Patents
Foer frekvensmodulerade signaler avsedd demodulator med feldetektion Download PDFInfo
- Publication number
- FI68333C FI68333C FI792978A FI792978A FI68333C FI 68333 C FI68333 C FI 68333C FI 792978 A FI792978 A FI 792978A FI 792978 A FI792978 A FI 792978A FI 68333 C FI68333 C FI 68333C
- Authority
- FI
- Finland
- Prior art keywords
- message
- oscillator
- signals
- phase
- output
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title description 24
- 230000007547 defect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 239000000969 carrier Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
- H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/87—Regeneration of colour television signals
- H04N9/88—Signal drop-out compensation
- H04N9/882—Signal drop-out compensation the signal being a composite colour television signal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Optical Recording Or Reproduction (AREA)
- Television Signal Processing For Recording (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Claims (6)
1. Anordning sora används i ett signalomvandlingssystem innefattande en källa för bärvägor, varvid den momentana frek-vensen hos bärvägorna varierar inom ett givst avvikelseintervall och i kallan förekommer tillfälliga driftsstörningar; under vilka den momentana frekvensen hos bärvägorna synes avvika frän det givna avvikelseintervallet, varvid anordningen innefattar en fasläst slinga (16) med en fasdetektor (18) och en spänningsstyrd oscillator (22), varvid fasdetektorn tar emot första signaler som svarar mot bärvägorna och utgängssignalerna frän oscillatorn och pä basen av dessa utformar utgängssignaler som är beroende av fassambandet mellan de därtill förda signalerna, varjämte oscillatorn tar emot fasdetektorutgängssignalerna och pä grund av dessa ändrar frekvensen hos oscillatorutgängssignalerna i sädan riktning, att den relativa fasen mellan de första signalerna och oscillatorutgängssignalerna upprätthälls inom ett bestämt inter-vall av värden, kännetecknad av ett defektdetekte-ringsorgan (34) som tar emot de första signalerna och oscillatorutgängssignalerna och utformar en defektindikeringssignal när den relativa fasen mellan de första signalerna och oscillatorutgängssignalerna avviker frän ett givet intervall av värden mot-svarande förekomsten av driftsstörningarna, och som utformar en referensniväsignal när den relativa fasen mellan de första signalerna och oscillatorutgängssignalerna ligger inom det givna in-tervallet av värden.
2. Anordning enligt patentkravet 1, kännetecknad därav, att nämnda intervall av värden ligger inom gränser-na frän 0° tili 180°.
3. Anordning enligt patentkravet 2,kännetecknad därav, att nämnda givna intervall av värden ligger inom gränserna 90° _+ en vinkel som är lika med eller mindre än 90°.
4. Anordning enligt patentkravet 3, kännetecknad av ett begränsarorgan som tar emot bärvägorna frän bär-vägskällan och utformar de första signalerna pä basen av dessa.
5. Anordning enligt patentkravet 1,2 eller 3, känne -tecknad av begränsarorgan som tar emot bärvägorna frän bärvägskällan och utformar de första pulssignalerna svarande mot n
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/948,013 US4203134A (en) | 1978-10-02 | 1978-10-02 | FM Signal demodulator with defect detection |
| US94801378 | 1978-10-02 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI792978A FI792978A (fi) | 1980-04-03 |
| FI68333B FI68333B (fi) | 1985-04-30 |
| FI68333C true FI68333C (fi) | 1985-08-12 |
Family
ID=25487124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI792978A FI68333C (fi) | 1978-10-02 | 1979-09-25 | Foer frekvensmodulerade signaler avsedd demodulator med feldetektion |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US4203134A (sv) |
| JP (1) | JPS5555450A (sv) |
| AT (1) | AT384333B (sv) |
| AU (1) | AU531092B2 (sv) |
| CA (1) | CA1129094A (sv) |
| DE (1) | DE2939402C2 (sv) |
| EG (1) | EG13936A (sv) |
| ES (1) | ES484438A1 (sv) |
| FI (1) | FI68333C (sv) |
| FR (1) | FR2438375B1 (sv) |
| GB (1) | GB2032738B (sv) |
| HK (1) | HK7983A (sv) |
| IT (1) | IT1123352B (sv) |
| MY (1) | MY8400054A (sv) |
| NL (1) | NL7907301A (sv) |
| PL (1) | PL133032B1 (sv) |
| SE (1) | SE435885B (sv) |
| SG (1) | SG61682G (sv) |
| SU (1) | SU1033016A3 (sv) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286283A (en) * | 1979-12-20 | 1981-08-25 | Rca Corporation | Transcoder |
| JPS5715207A (en) * | 1980-07-03 | 1982-01-26 | Victor Co Of Japan Ltd | Frequency-characteristic correction device of rotary information recording medium reproducing device |
| US4376289A (en) * | 1980-10-27 | 1983-03-08 | Rca Corporation | Self-enabling dropout corrector |
| US4327432A (en) * | 1980-11-07 | 1982-04-27 | Rca Corporation | Video disc player with RFI reduction circuit |
| US4327431A (en) * | 1980-11-07 | 1982-04-27 | Rca Corporation | Video disc player with variable offset RFI reduction circuit |
| US4361881A (en) * | 1980-11-21 | 1982-11-30 | Rca Corporation | Video disc player with RFI reduction circuit including signal subtraction |
| US4385374A (en) * | 1980-11-21 | 1983-05-24 | Rca Corporation | Video disc player with RFI reduction circuit including an AGC amplifier and dual function peak detector |
| US4364119A (en) * | 1980-11-21 | 1982-12-14 | Rca Corporation | Video disc player with RFI reduction circuit including a signal product generator |
| US4353093A (en) * | 1981-05-11 | 1982-10-05 | Rca Corporation | Impulse noise reduction system for TV receivers |
| US4418363A (en) * | 1981-06-24 | 1983-11-29 | Rca Corporation | Video disc player with RFI reduction circuit including sync tip clamp |
| JPS5834031U (ja) * | 1981-08-30 | 1983-03-05 | 加藤 一郎 | 気圧計の指針 |
| US4481616A (en) * | 1981-09-30 | 1984-11-06 | Rca Corporation | Scanning capacitance microscope |
| US4476498A (en) * | 1982-02-05 | 1984-10-09 | Rca Corporation | Deviation detector for FM video recording system |
| US4462048A (en) * | 1982-02-11 | 1984-07-24 | Rca Corporation | Noise reduction circuitry for audio signals |
| US4514763A (en) * | 1982-10-29 | 1985-04-30 | Rca Corporation | Sound signal and impulse noise detector for television receivers |
| JPS6087469A (ja) * | 1983-10-19 | 1985-05-17 | Hitachi Ltd | ドロップアウト補償装置 |
| JPS6077114U (ja) * | 1983-11-01 | 1985-05-29 | パイオニア株式会社 | Ｆｍ信号復調装置 |
| JPS61970A (ja) * | 1984-06-13 | 1986-01-06 | Matsushita Electric Ind Co Ltd | 異常信号検出装置 |
| DE3613473A1 (de) * | 1986-04-22 | 1987-10-29 | Thomson Brandt Gmbh | Videorecorder mit verbesserter tonwiedergabe |
| US4680651A (en) * | 1986-08-19 | 1987-07-14 | Eastman Kodak Company | Timing signal dropout compensation circuit |
| DE3702856A1 (de) * | 1987-01-31 | 1988-08-11 | Philips Patentverwaltung | Schaltungsanordnung zur detektion der ueberschreitung eines vorgegebenen frequenzhubbereiches |
| US4754467A (en) * | 1987-07-01 | 1988-06-28 | Motorola, Inc. | Digital signal detection with signal buffering and message insertion |
| US4906942A (en) * | 1987-12-17 | 1990-03-06 | Mitsubishi Denki Kabushiki Kaisha | Frequency demodulator with reversal phenomenon compensation |
| JPH01296704A (ja) * | 1988-05-24 | 1989-11-30 | Matsushita Electric Ind Co Ltd | Ｆｍ復調装置 |
| US4943858A (en) * | 1989-02-23 | 1990-07-24 | Matsushita Electric Industrial Co., Ltd. | TV signal recording and reproducing apparatus employing a digital interface and including signal drop-out compensation |
| DE3920004A1 (de) * | 1989-06-20 | 1991-01-03 | Philips Patentverwaltung | Verfahren und anordnung zur rauschunterdrueckung eines digitalen signals |
| DE19757315A1 (de) * | 1997-12-22 | 1999-06-24 | Thomson Brandt Gmbh | Standby-Signal für FM-Demodulator |
| DE19830130B4 (de) * | 1998-07-06 | 2007-01-18 | Robert Bosch Gmbh | Schaltungsanordnung für eine PLL-Schaltung (Phase-locked-Loop) zur Frequenzvervielfachung |
| TWI756730B (zh) * | 2020-07-03 | 2022-03-01 | 立積電子股份有限公司 | 調頻解調變裝置及調頻解調變裝置的控制方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582809A (en) * | 1968-09-06 | 1971-06-01 | Signetics Corp | Phased locked loop with voltage controlled oscillator |
| US3842194A (en) * | 1971-03-22 | 1974-10-15 | Rca Corp | Information records and recording/playback systems therefor |
| JPS5550640B2 (sv) * | 1973-03-09 | 1980-12-19 | ||
| US4001496A (en) * | 1974-06-06 | 1977-01-04 | Rca Corporation | Defect detection and compensation apparatus for use in an fm signal translating system |
| AR207776A1 (es) * | 1974-06-06 | 1976-10-29 | Rca Corp | Disposicion para reproducir una grabacion de imagenes de color sucesivas |
| US3967311A (en) * | 1974-11-12 | 1976-06-29 | Rca Corporation | Velocity correction for video discs |
| JPS5440331B2 (sv) * | 1975-03-05 | 1979-12-03 | ||
| GB1536851A (en) * | 1975-03-10 | 1978-12-20 | Rca Corp | Video carrier wave defect detection and compensation |
| NL7503049A (nl) * | 1975-03-14 | 1976-09-16 | Philips Corp | Inrichting voor het kompenseren van signaal- uitvallen in een hoekgemoduleerd signaal. |
-
1978
- 1978-10-02 US US05/948,013 patent/US4203134A/en not_active Expired - Lifetime
-
1979
- 1979-09-17 EG EG553/79A patent/EG13936A/xx active
- 1979-09-25 ES ES484438A patent/ES484438A1/es not_active Expired
- 1979-09-25 AU AU51179/79A patent/AU531092B2/en not_active Ceased
- 1979-09-25 FI FI792978A patent/FI68333C/fi not_active IP Right Cessation
- 1979-09-25 SE SE7907946A patent/SE435885B/sv unknown
- 1979-09-26 IT IT26033/79A patent/IT1123352B/it active
- 1979-09-26 GB GB7933313A patent/GB2032738B/en not_active Expired
- 1979-09-28 CA CA336,627A patent/CA1129094A/en not_active Expired
- 1979-09-28 DE DE2939402A patent/DE2939402C2/de not_active Expired
- 1979-10-01 JP JP12727279A patent/JPS5555450A/ja active Granted
- 1979-10-01 FR FR7924404A patent/FR2438375B1/fr not_active Expired
- 1979-10-01 NL NL7907301A patent/NL7907301A/nl not_active Application Discontinuation
- 1979-10-01 SU SU792820502A patent/SU1033016A3/ru active
- 1979-10-02 PL PL1979218690A patent/PL133032B1/pl unknown
- 1979-10-02 AT AT0643779A patent/AT384333B/de not_active IP Right Cessation
-
1982
- 1982-12-07 SG SG616/82A patent/SG61682G/en unknown
-
1983
- 1983-03-03 HK HK79/83A patent/HK7983A/xx not_active IP Right Cessation
-
1984
- 1984-12-30 MY MY54/84A patent/MY8400054A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE435885B (sv) | 1984-10-22 |
| FI68333B (fi) | 1985-04-30 |
| MY8400054A (en) | 1984-12-31 |
| SU1033016A3 (ru) | 1983-07-30 |
| GB2032738A (en) | 1980-05-08 |
| JPS6120942B2 (sv) | 1986-05-24 |
| ATA643779A (de) | 1987-03-15 |
| JPS5555450A (en) | 1980-04-23 |
| SE7907946L (sv) | 1980-04-03 |
| PL133032B1 (en) | 1985-05-31 |
| ES484438A1 (es) | 1980-04-16 |
| DE2939402A1 (de) | 1980-04-17 |
| SG61682G (en) | 1983-09-02 |
| FR2438375B1 (fr) | 1986-06-13 |
| IT7926033A0 (it) | 1979-09-26 |
| FI792978A (fi) | 1980-04-03 |
| CA1129094A (en) | 1982-08-03 |
| DE2939402C2 (de) | 1985-03-21 |
| FR2438375A1 (fr) | 1980-04-30 |
| IT1123352B (it) | 1986-04-30 |
| GB2032738B (en) | 1982-09-29 |
| PL218690A1 (sv) | 1980-08-11 |
| AU531092B2 (en) | 1983-08-11 |
| NL7907301A (nl) | 1980-04-08 |
| EG13936A (en) | 1983-09-30 |
| US4203134A (en) | 1980-05-13 |
| AU5117979A (en) | 1980-04-17 |
| AT384333B (de) | 1987-10-27 |
| HK7983A (en) | 1983-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: RCA CORPORATION |