CA1091801A - Circuit for accurately extracting the synchronization information contained within a composite video waveform - Google Patents
Circuit for accurately extracting the synchronization information contained within a composite video waveformInfo
- Publication number
- CA1091801A CA1091801A CA281,737A CA281737A CA1091801A CA 1091801 A CA1091801 A CA 1091801A CA 281737 A CA281737 A CA 281737A CA 1091801 A CA1091801 A CA 1091801A
- Authority
- CA
- Canada
- Prior art keywords
- waveform
- output
- control
- transistor
- current
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 230000009021 linear effect Effects 0.000 claims description 17
- 230000001276 controlling effect Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000003534 oscillatory effect Effects 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 5
- 239000003990 capacitor Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 7
- 230000004044 response Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009118 appropriate response Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/08—Separation of synchronising signals from picture signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
- Synchronizing For Television (AREA)
- Picture Signal Circuits (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US720,854 | 1976-09-07 | ||
| US05/720,854 US4084187A (en) | 1976-09-07 | 1976-09-07 | Circuit for accurately extracting the synchronization information contained within a composite video waveform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1091801A true CA1091801A (en) | 1980-12-16 |
Family
ID=24895527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA281,737A Expired CA1091801A (en) | 1976-09-07 | 1977-06-30 | Circuit for accurately extracting the synchronization information contained within a composite video waveform |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4084187A (Direct) |
| JP (2) | JPS5333016A (Direct) |
| CA (1) | CA1091801A (Direct) |
| DE (1) | DE2736778C3 (Direct) |
| FR (1) | FR2363951A1 (Direct) |
| GB (1) | GB1562148A (Direct) |
| NL (1) | NL174210C (Direct) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4319275A (en) * | 1980-04-30 | 1982-03-09 | Zenith Radio Corporation | Vertical synchronization detection system and method |
| DE3309809A1 (de) * | 1983-03-18 | 1984-09-20 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum abtrennen des synchronimpulsgemisches vom fbas-signal und schaltungsanordnung fuer ein digitales amplitudensieb zur durchfuehrung des verfahrens |
| FR2545304B1 (fr) * | 1983-04-29 | 1985-07-05 | Thomson Csf | Dispositif d'extraction des impulsions de synchronisation d'un signal video et de generation de signaux d'alignement |
| JPS6054509A (ja) * | 1983-09-03 | 1985-03-29 | Sony Corp | 非直線回路 |
| US4672450A (en) * | 1985-04-09 | 1987-06-09 | Benson, Inc. | Composite video synchronization pulse separator for color image processor |
| JPS61285596A (ja) * | 1985-06-12 | 1986-12-16 | オムロン株式会社 | 共同玄関入門管理装置 |
| US4816772A (en) * | 1988-03-09 | 1989-03-28 | Rockwell International Corporation | Wide range linear automatic gain control amplifier |
| JP2805762B2 (ja) * | 1988-08-31 | 1998-09-30 | 松下電器産業株式会社 | 同期信号分離装置 |
| US5274451A (en) * | 1992-03-02 | 1993-12-28 | Thomson Consumer Electronics, Inc. | Sync separator |
| JP2546590B2 (ja) * | 1992-12-07 | 1996-10-23 | 三星電子株式会社 | 同期信号抽出回路 |
| JPH07288714A (ja) * | 1994-03-31 | 1995-10-31 | Hewlett Packard Co <Hp> | 高速同期分離システム及び方法 |
| US6597352B1 (en) | 1999-05-05 | 2003-07-22 | Nokia Corporation | Method and device for filtered sync detection |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1027019A (en) * | 1966-06-08 | 1966-04-20 | Thorn Electronics Ltd | Improvements in television synchronising pulse separators |
| NL7000743A (Direct) * | 1970-01-19 | 1971-07-21 | ||
| US3699256A (en) * | 1970-12-28 | 1972-10-17 | Tektronix Inc | Circuit for accurately detecting the time of occurrence of a waveform |
| JPS5315355B2 (Direct) * | 1972-04-28 | 1978-05-24 |
-
1976
- 1976-09-07 US US05/720,854 patent/US4084187A/en not_active Expired - Lifetime
-
1977
- 1977-06-16 GB GB25211/77A patent/GB1562148A/en not_active Expired
- 1977-06-30 CA CA281,737A patent/CA1091801A/en not_active Expired
- 1977-08-16 DE DE2736778A patent/DE2736778C3/de not_active Expired
- 1977-08-31 JP JP10470077A patent/JPS5333016A/ja active Granted
- 1977-09-06 FR FR7727537A patent/FR2363951A1/fr active Granted
- 1977-09-06 NL NLAANVRAGE7709809,A patent/NL174210C/xx not_active IP Right Cessation
-
1978
- 1978-01-09 JP JP53001059A patent/JPS5820482B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5333016A (en) | 1978-03-28 |
| FR2363951A1 (fr) | 1978-03-31 |
| US4084187A (en) | 1978-04-11 |
| NL174210C (nl) | 1984-05-01 |
| DE2736778B2 (de) | 1979-10-31 |
| NL174210B (nl) | 1983-12-01 |
| NL7709809A (nl) | 1978-03-09 |
| GB1562148A (en) | 1980-03-05 |
| FR2363951B1 (Direct) | 1982-11-19 |
| JPS53130952A (en) | 1978-11-15 |
| JPS566178B2 (Direct) | 1981-02-09 |
| DE2736778A1 (de) | 1978-03-16 |
| DE2736778C3 (de) | 1981-12-17 |
| JPS5820482B2 (ja) | 1983-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1091801A (en) | Circuit for accurately extracting the synchronization information contained within a composite video waveform | |
| US4185299A (en) | Synchronization signal separator circuit | |
| CA1149890A (en) | Self-adjusting dual mode automatic gain control circuit | |
| US4115812A (en) | Automatic gain control circuit | |
| US3820029A (en) | Precision voltage control monostable multivibrator | |
| US3624290A (en) | Television receiver agc system keyed in response to time coincidence of sync and flyback pulses | |
| US4097896A (en) | Sync separator circuit | |
| US3441669A (en) | Threshold control for sync separator noise protection circuit and for agc stage | |
| US4243918A (en) | Signal integrator with time constant controlled by differentiating feedback | |
| CA1104709A (en) | Television horizontal oscillator frequency control arrangement for use with a tape recorder | |
| US4212032A (en) | Synchronization and gain control circuit | |
| US3715488A (en) | Noise cancellation circuit | |
| US4408229A (en) | Noise sensitivity reduction apparatus for a TV receiver AGC system | |
| CA1129083A (en) | Keyed agc circuit | |
| PL132622B1 (en) | Apparatus for processing video signals in tv receiver | |
| US5510854A (en) | Device for adjusting the black level of a video signal | |
| CA1096491A (en) | Television synchronizing signal separating circuit | |
| EP0281169A1 (en) | Line synchronising circuit in a picture display device | |
| CA1219357A (en) | Backporch gating pulse generator subject to disabling during vertical sync interval | |
| US3962723A (en) | Automatic peak color control circuit | |
| US5703445A (en) | Sawtooth generator with disturbance signal rejection for a deflection apparatus | |
| CA1130915A (en) | Noise cancellation circuit | |
| KR960013220B1 (ko) | 상승 시간 정규화 및 고주파 잡음을 감쇄화하는 텔레비젼 신호 공급 장치 | |
| US3980816A (en) | A.G.C. circuit for a video signal | |
| US4518948A (en) | Analog-to-digital converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |